./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_02-simple_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d293257-7442-468e-8a6d-979ff19b4c11/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d293257-7442-468e-8a6d-979ff19b4c11/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d293257-7442-468e-8a6d-979ff19b4c11/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d293257-7442-468e-8a6d-979ff19b4c11/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_02-simple_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d293257-7442-468e-8a6d-979ff19b4c11/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d293257-7442-468e-8a6d-979ff19b4c11/bin/uautomizer-TMbwUNV5ro --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 b3e7d0a2f10d1449a9a354d4032bafdd0ae7a7fd76aceb835acbee3134ec74e4 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:14:49,209 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:14:49,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:14:49,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:14:49,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:14:49,241 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:14:49,243 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:14:49,245 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:14:49,247 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:14:49,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:14:49,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:14:49,251 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:14:49,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:14:49,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:14:49,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:14:49,256 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:14:49,258 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:14:49,259 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:14:49,261 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:14:49,263 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:14:49,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:14:49,275 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:14:49,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:14:49,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:14:49,285 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:14:49,291 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:14:49,292 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:14:49,293 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:14:49,293 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:14:49,294 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:14:49,294 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:14:49,295 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:14:49,297 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:14:49,299 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:14:49,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:14:49,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:14:49,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:14:49,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:14:49,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:14:49,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:14:49,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:14:49,306 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d293257-7442-468e-8a6d-979ff19b4c11/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-18 20:14:49,339 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:14:49,339 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:14:49,340 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:14:49,340 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:14:49,341 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:14:49,341 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:14:49,342 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:14:49,342 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:14:49,342 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:14:49,343 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:14:49,344 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:14:49,344 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:14:49,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:14:49,345 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:14:49,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:14:49,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:14:49,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:14:49,345 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:14:49,346 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-18 20:14:49,346 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:14:49,346 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:14:49,346 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:14:49,347 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:14:49,347 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:14:49,347 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:14:49,347 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:14:49,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:14:49,349 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:14:49,349 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:14:49,350 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:14:49,350 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:14:49,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:14:49,350 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:14:49,351 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:14:49,351 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:14:49,351 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d293257-7442-468e-8a6d-979ff19b4c11/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d293257-7442-468e-8a6d-979ff19b4c11/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3e7d0a2f10d1449a9a354d4032bafdd0ae7a7fd76aceb835acbee3134ec74e4 [2022-11-18 20:14:49,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:14:49,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:14:49,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:14:49,723 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:14:49,724 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:14:49,725 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d293257-7442-468e-8a6d-979ff19b4c11/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/28-race_reach_02-simple_racefree.i [2022-11-18 20:14:49,809 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d293257-7442-468e-8a6d-979ff19b4c11/bin/uautomizer-TMbwUNV5ro/data/c62b73f51/d95e2dffea3347b986c21dd44b62ea9f/FLAGd531965c7 [2022-11-18 20:14:50,477 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:14:50,478 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d293257-7442-468e-8a6d-979ff19b4c11/sv-benchmarks/c/goblint-regression/28-race_reach_02-simple_racefree.i [2022-11-18 20:14:50,490 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d293257-7442-468e-8a6d-979ff19b4c11/bin/uautomizer-TMbwUNV5ro/data/c62b73f51/d95e2dffea3347b986c21dd44b62ea9f/FLAGd531965c7 [2022-11-18 20:14:50,706 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d293257-7442-468e-8a6d-979ff19b4c11/bin/uautomizer-TMbwUNV5ro/data/c62b73f51/d95e2dffea3347b986c21dd44b62ea9f [2022-11-18 20:14:50,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:14:50,710 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:14:50,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:14:50,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:14:50,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:14:50,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:14:50" (1/1) ... [2022-11-18 20:14:50,726 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15df43a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:14:50, skipping insertion in model container [2022-11-18 20:14:50,726 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:14:50" (1/1) ... [2022-11-18 20:14:50,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:14:50,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:14:51,256 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d293257-7442-468e-8a6d-979ff19b4c11/sv-benchmarks/c/goblint-regression/28-race_reach_02-simple_racefree.i[30176,30189] [2022-11-18 20:14:51,292 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:14:51,309 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:14:51,365 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d293257-7442-468e-8a6d-979ff19b4c11/sv-benchmarks/c/goblint-regression/28-race_reach_02-simple_racefree.i[30176,30189] [2022-11-18 20:14:51,379 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:14:51,423 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:14:51,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:14:51 WrapperNode [2022-11-18 20:14:51,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:14:51,425 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:14:51,425 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:14:51,426 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:14:51,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:14:51" (1/1) ... [2022-11-18 20:14:51,474 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:14:51" (1/1) ... [2022-11-18 20:14:51,512 INFO L138 Inliner]: procedures = 170, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 87 [2022-11-18 20:14:51,516 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:14:51,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:14:51,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:14:51,517 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:14:51,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:14:51" (1/1) ... [2022-11-18 20:14:51,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:14:51" (1/1) ... [2022-11-18 20:14:51,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:14:51" (1/1) ... [2022-11-18 20:14:51,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:14:51" (1/1) ... [2022-11-18 20:14:51,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:14:51" (1/1) ... [2022-11-18 20:14:51,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:14:51" (1/1) ... [2022-11-18 20:14:51,580 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:14:51" (1/1) ... [2022-11-18 20:14:51,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:14:51" (1/1) ... [2022-11-18 20:14:51,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:14:51,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:14:51,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:14:51,592 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:14:51,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:14:51" (1/1) ... [2022-11-18 20:14:51,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:14:51,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d293257-7442-468e-8a6d-979ff19b4c11/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:14:51,648 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d293257-7442-468e-8a6d-979ff19b4c11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:14:51,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d293257-7442-468e-8a6d-979ff19b4c11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:14:51,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:14:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:14:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 20:14:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:14:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:14:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-18 20:14:51,697 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-18 20:14:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:14:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:14:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:14:51,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:14:51,700 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:14:51,883 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:14:51,886 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:14:52,212 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:14:52,221 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:14:52,221 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-18 20:14:52,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:14:52 BoogieIcfgContainer [2022-11-18 20:14:52,225 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:14:52,227 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:14:52,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:14:52,232 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:14:52,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:14:50" (1/3) ... [2022-11-18 20:14:52,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b566c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:14:52, skipping insertion in model container [2022-11-18 20:14:52,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:14:51" (2/3) ... [2022-11-18 20:14:52,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b566c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:14:52, skipping insertion in model container [2022-11-18 20:14:52,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:14:52" (3/3) ... [2022-11-18 20:14:52,236 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_02-simple_racefree.i [2022-11-18 20:14:52,247 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:14:52,262 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:14:52,263 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-18 20:14:52,263 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:14:52,330 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-18 20:14:52,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 138 transitions, 284 flow [2022-11-18 20:14:52,507 INFO L130 PetriNetUnfolder]: 17/182 cut-off events. [2022-11-18 20:14:52,507 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 20:14:52,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 182 events. 17/182 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 509 event pairs, 0 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 93. Up to 4 conditions per place. [2022-11-18 20:14:52,517 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 138 transitions, 284 flow [2022-11-18 20:14:52,533 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 138 transitions, 284 flow [2022-11-18 20:14:52,561 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:14:52,570 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;@39b99319, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:14:52,571 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-18 20:14:52,629 INFO L130 PetriNetUnfolder]: 2/56 cut-off events. [2022-11-18 20:14:52,633 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:14:52,634 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:14:52,635 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:52,635 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-18 20:14:52,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:52,644 INFO L85 PathProgramCache]: Analyzing trace with hash 697350561, now seen corresponding path program 1 times [2022-11-18 20:14:52,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:52,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422856220] [2022-11-18 20:14:52,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:52,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:52,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:52,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:14:52,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:52,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422856220] [2022-11-18 20:14:52,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422856220] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:14:52,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:14:52,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:14:52,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597162274] [2022-11-18 20:14:52,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:14:52,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:14:52,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:52,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:14:52,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:14:52,994 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 138 [2022-11-18 20:14:52,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 138 transitions, 284 flow. Second operand has 2 states, 2 states have (on average 124.5) internal successors, (249), 2 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:52,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:14:52,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 138 [2022-11-18 20:14:52,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:14:53,096 INFO L130 PetriNetUnfolder]: 1/164 cut-off events. [2022-11-18 20:14:53,097 INFO L131 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-11-18 20:14:53,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 164 events. 1/164 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 290 event pairs, 0 based on Foata normal form. 16/166 useless extension candidates. Maximal degree in co-relation 4. Up to 3 conditions per place. [2022-11-18 20:14:53,101 INFO L137 encePairwiseOnDemand]: 127/138 looper letters, 2 selfloop transitions, 0 changer transitions 0/126 dead transitions. [2022-11-18 20:14:53,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 126 transitions, 264 flow [2022-11-18 20:14:53,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:14:53,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 20:14:53,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 261 transitions. [2022-11-18 20:14:53,116 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9456521739130435 [2022-11-18 20:14:53,117 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 261 transitions. [2022-11-18 20:14:53,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 261 transitions. [2022-11-18 20:14:53,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:14:53,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 261 transitions. [2022-11-18 20:14:53,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 130.5) internal successors, (261), 2 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:53,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:53,133 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:53,136 INFO L175 Difference]: Start difference. First operand has 129 places, 138 transitions, 284 flow. Second operand 2 states and 261 transitions. [2022-11-18 20:14:53,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 126 transitions, 264 flow [2022-11-18 20:14:53,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 126 transitions, 264 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:14:53,145 INFO L231 Difference]: Finished difference. Result has 129 places, 126 transitions, 260 flow [2022-11-18 20:14:53,147 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=260, PETRI_PLACES=129, PETRI_TRANSITIONS=126} [2022-11-18 20:14:53,151 INFO L288 CegarLoopForPetriNet]: 129 programPoint places, 0 predicate places. [2022-11-18 20:14:53,153 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 126 transitions, 260 flow [2022-11-18 20:14:53,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 124.5) internal successors, (249), 2 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:53,155 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:14:53,156 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:53,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:14:53,157 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-18 20:14:53,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:53,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1584854242, now seen corresponding path program 1 times [2022-11-18 20:14:53,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:53,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755756682] [2022-11-18 20:14:53,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:53,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:53,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:53,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:14:53,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:53,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755756682] [2022-11-18 20:14:53,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755756682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:14:53,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:14:53,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:14:53,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24465855] [2022-11-18 20:14:53,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:14:53,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:14:53,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:53,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:14:53,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:14:53,392 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 138 [2022-11-18 20:14:53,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 126 transitions, 260 flow. Second operand has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:53,397 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:14:53,397 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 138 [2022-11-18 20:14:53,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:14:53,457 INFO L130 PetriNetUnfolder]: 0/145 cut-off events. [2022-11-18 20:14:53,458 INFO L131 PetriNetUnfolder]: For 9/20 co-relation queries the response was YES. [2022-11-18 20:14:53,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 145 events. 0/145 cut-off events. For 9/20 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 145 event pairs, 0 based on Foata normal form. 1/135 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2022-11-18 20:14:53,459 INFO L137 encePairwiseOnDemand]: 135/138 looper letters, 9 selfloop transitions, 2 changer transitions 0/128 dead transitions. [2022-11-18 20:14:53,459 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 128 transitions, 286 flow [2022-11-18 20:14:53,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:14:53,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:14:53,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 363 transitions. [2022-11-18 20:14:53,463 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8768115942028986 [2022-11-18 20:14:53,463 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 363 transitions. [2022-11-18 20:14:53,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 363 transitions. [2022-11-18 20:14:53,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:14:53,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 363 transitions. [2022-11-18 20:14:53,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:53,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:53,468 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:53,469 INFO L175 Difference]: Start difference. First operand has 129 places, 126 transitions, 260 flow. Second operand 3 states and 363 transitions. [2022-11-18 20:14:53,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 128 transitions, 286 flow [2022-11-18 20:14:53,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 128 transitions, 286 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:14:53,473 INFO L231 Difference]: Finished difference. Result has 132 places, 126 transitions, 268 flow [2022-11-18 20:14:53,473 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=132, PETRI_TRANSITIONS=126} [2022-11-18 20:14:53,474 INFO L288 CegarLoopForPetriNet]: 129 programPoint places, 3 predicate places. [2022-11-18 20:14:53,474 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 126 transitions, 268 flow [2022-11-18 20:14:53,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:53,475 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:14:53,475 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:53,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:14:53,476 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-18 20:14:53,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:53,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1508306832, now seen corresponding path program 1 times [2022-11-18 20:14:53,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:53,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308171057] [2022-11-18 20:14:53,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:53,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:53,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:53,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:14:53,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:53,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308171057] [2022-11-18 20:14:53,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308171057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:14:53,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:14:53,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:14:53,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339980059] [2022-11-18 20:14:53,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:14:53,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:14:53,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:53,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:14:53,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:14:53,596 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 138 [2022-11-18 20:14:53,596 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 126 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:53,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:14:53,597 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 138 [2022-11-18 20:14:53,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:14:53,769 INFO L130 PetriNetUnfolder]: 29/513 cut-off events. [2022-11-18 20:14:53,769 INFO L131 PetriNetUnfolder]: For 8/12 co-relation queries the response was YES. [2022-11-18 20:14:53,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 612 conditions, 513 events. 29/513 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2576 event pairs, 8 based on Foata normal form. 1/459 useless extension candidates. Maximal degree in co-relation 606. Up to 53 conditions per place. [2022-11-18 20:14:53,777 INFO L137 encePairwiseOnDemand]: 129/138 looper letters, 18 selfloop transitions, 6 changer transitions 0/133 dead transitions. [2022-11-18 20:14:53,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 133 transitions, 333 flow [2022-11-18 20:14:53,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:14:53,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:14:53,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2022-11-18 20:14:53,782 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.855072463768116 [2022-11-18 20:14:53,782 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 354 transitions. [2022-11-18 20:14:53,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 354 transitions. [2022-11-18 20:14:53,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:14:53,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 354 transitions. [2022-11-18 20:14:53,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:53,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:53,794 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:53,794 INFO L175 Difference]: Start difference. First operand has 132 places, 126 transitions, 268 flow. Second operand 3 states and 354 transitions. [2022-11-18 20:14:53,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 133 transitions, 333 flow [2022-11-18 20:14:53,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 133 transitions, 329 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:14:53,803 INFO L231 Difference]: Finished difference. Result has 132 places, 128 transitions, 302 flow [2022-11-18 20:14:53,803 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=302, PETRI_PLACES=132, PETRI_TRANSITIONS=128} [2022-11-18 20:14:53,806 INFO L288 CegarLoopForPetriNet]: 129 programPoint places, 3 predicate places. [2022-11-18 20:14:53,806 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 128 transitions, 302 flow [2022-11-18 20:14:53,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:53,808 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:14:53,809 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:53,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:14:53,809 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-18 20:14:53,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:53,810 INFO L85 PathProgramCache]: Analyzing trace with hash -364644268, now seen corresponding path program 1 times [2022-11-18 20:14:53,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:53,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573679907] [2022-11-18 20:14:53,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:53,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:53,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:14:53,881 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:14:53,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:14:53,933 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:14:53,934 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:14:53,935 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-11-18 20:14:53,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2022-11-18 20:14:53,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2022-11-18 20:14:53,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2022-11-18 20:14:53,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2022-11-18 20:14:53,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2022-11-18 20:14:53,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2022-11-18 20:14:53,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2022-11-18 20:14:53,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2022-11-18 20:14:53,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2022-11-18 20:14:53,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2022-11-18 20:14:53,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:14:53,948 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-18 20:14:53,952 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:14:53,952 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 20:14:54,020 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 20:14:54,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 184 transitions, 386 flow [2022-11-18 20:14:54,104 INFO L130 PetriNetUnfolder]: 31/303 cut-off events. [2022-11-18 20:14:54,104 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-18 20:14:54,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 303 events. 31/303 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1033 event pairs, 0 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 184. Up to 8 conditions per place. [2022-11-18 20:14:54,108 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 184 transitions, 386 flow [2022-11-18 20:14:54,113 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 184 transitions, 386 flow [2022-11-18 20:14:54,124 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:14:54,125 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;@39b99319, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:14:54,126 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-11-18 20:14:54,132 INFO L130 PetriNetUnfolder]: 2/56 cut-off events. [2022-11-18 20:14:54,133 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:14:54,134 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:14:54,137 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:54,138 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-18 20:14:54,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:54,138 INFO L85 PathProgramCache]: Analyzing trace with hash 884097113, now seen corresponding path program 1 times [2022-11-18 20:14:54,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:54,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325780934] [2022-11-18 20:14:54,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:54,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:54,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:54,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:14:54,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:54,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325780934] [2022-11-18 20:14:54,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325780934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:14:54,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:14:54,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:14:54,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574683841] [2022-11-18 20:14:54,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:14:54,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:14:54,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:54,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:14:54,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:14:54,203 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 184 [2022-11-18 20:14:54,205 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 184 transitions, 386 flow. Second operand has 2 states, 2 states have (on average 162.5) internal successors, (325), 2 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:54,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:14:54,205 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 184 [2022-11-18 20:14:54,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:14:54,299 INFO L130 PetriNetUnfolder]: 3/272 cut-off events. [2022-11-18 20:14:54,299 INFO L131 PetriNetUnfolder]: For 21/27 co-relation queries the response was YES. [2022-11-18 20:14:54,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 272 events. 3/272 cut-off events. For 21/27 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 752 event pairs, 0 based on Foata normal form. 42/289 useless extension candidates. Maximal degree in co-relation 168. Up to 7 conditions per place. [2022-11-18 20:14:54,302 INFO L137 encePairwiseOnDemand]: 167/184 looper letters, 4 selfloop transitions, 0 changer transitions 0/166 dead transitions. [2022-11-18 20:14:54,302 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 166 transitions, 358 flow [2022-11-18 20:14:54,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:14:54,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 20:14:54,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 345 transitions. [2022-11-18 20:14:54,304 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9375 [2022-11-18 20:14:54,304 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 345 transitions. [2022-11-18 20:14:54,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 345 transitions. [2022-11-18 20:14:54,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:14:54,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 345 transitions. [2022-11-18 20:14:54,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 172.5) internal successors, (345), 2 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:54,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:54,308 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:54,308 INFO L175 Difference]: Start difference. First operand has 170 places, 184 transitions, 386 flow. Second operand 2 states and 345 transitions. [2022-11-18 20:14:54,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 166 transitions, 358 flow [2022-11-18 20:14:54,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 166 transitions, 358 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:14:54,316 INFO L231 Difference]: Finished difference. Result has 170 places, 166 transitions, 350 flow [2022-11-18 20:14:54,316 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=350, PETRI_PLACES=170, PETRI_TRANSITIONS=166} [2022-11-18 20:14:54,318 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, 0 predicate places. [2022-11-18 20:14:54,318 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 166 transitions, 350 flow [2022-11-18 20:14:54,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 162.5) internal successors, (325), 2 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:54,319 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:14:54,319 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:54,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:14:54,319 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-18 20:14:54,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:54,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1771600794, now seen corresponding path program 1 times [2022-11-18 20:14:54,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:54,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094514778] [2022-11-18 20:14:54,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:54,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:54,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:54,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:14:54,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:54,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094514778] [2022-11-18 20:14:54,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094514778] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:14:54,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:14:54,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:14:54,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221027739] [2022-11-18 20:14:54,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:14:54,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:14:54,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:54,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:14:54,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:14:54,422 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 184 [2022-11-18 20:14:54,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 166 transitions, 350 flow. Second operand has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:54,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:14:54,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 184 [2022-11-18 20:14:54,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:14:54,488 INFO L130 PetriNetUnfolder]: 2/253 cut-off events. [2022-11-18 20:14:54,488 INFO L131 PetriNetUnfolder]: For 32/78 co-relation queries the response was YES. [2022-11-18 20:14:54,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 253 events. 2/253 cut-off events. For 32/78 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 627 event pairs, 0 based on Foata normal form. 1/232 useless extension candidates. Maximal degree in co-relation 284. Up to 16 conditions per place. [2022-11-18 20:14:54,490 INFO L137 encePairwiseOnDemand]: 181/184 looper letters, 13 selfloop transitions, 2 changer transitions 0/170 dead transitions. [2022-11-18 20:14:54,490 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 170 transitions, 388 flow [2022-11-18 20:14:54,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:14:54,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:14:54,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 481 transitions. [2022-11-18 20:14:54,492 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8713768115942029 [2022-11-18 20:14:54,492 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 481 transitions. [2022-11-18 20:14:54,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 481 transitions. [2022-11-18 20:14:54,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:14:54,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 481 transitions. [2022-11-18 20:14:54,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:54,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:54,497 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:54,498 INFO L175 Difference]: Start difference. First operand has 170 places, 166 transitions, 350 flow. Second operand 3 states and 481 transitions. [2022-11-18 20:14:54,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 170 transitions, 388 flow [2022-11-18 20:14:54,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 170 transitions, 388 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:14:54,503 INFO L231 Difference]: Finished difference. Result has 173 places, 167 transitions, 362 flow [2022-11-18 20:14:54,503 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=170, 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=362, PETRI_PLACES=173, PETRI_TRANSITIONS=167} [2022-11-18 20:14:54,507 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, 3 predicate places. [2022-11-18 20:14:54,507 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 167 transitions, 362 flow [2022-11-18 20:14:54,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:54,508 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:14:54,508 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:54,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:14:54,508 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-18 20:14:54,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:54,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1563346516, now seen corresponding path program 1 times [2022-11-18 20:14:54,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:54,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96896602] [2022-11-18 20:14:54,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:54,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:54,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:54,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:14:54,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:54,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96896602] [2022-11-18 20:14:54,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96896602] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:14:54,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:14:54,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:14:54,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067052040] [2022-11-18 20:14:54,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:14:54,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:14:54,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:54,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:14:54,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:14:54,591 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 184 [2022-11-18 20:14:54,592 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 167 transitions, 362 flow. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:54,592 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:14:54,592 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 184 [2022-11-18 20:14:54,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:14:55,943 INFO L130 PetriNetUnfolder]: 1377/7346 cut-off events. [2022-11-18 20:14:55,944 INFO L131 PetriNetUnfolder]: For 210/270 co-relation queries the response was YES. [2022-11-18 20:14:55,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9871 conditions, 7346 events. 1377/7346 cut-off events. For 210/270 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 78647 event pairs, 506 based on Foata normal form. 2/6305 useless extension candidates. Maximal degree in co-relation 9864. Up to 1414 conditions per place. [2022-11-18 20:14:56,005 INFO L137 encePairwiseOnDemand]: 165/184 looper letters, 42 selfloop transitions, 14 changer transitions 0/192 dead transitions. [2022-11-18 20:14:56,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 192 transitions, 535 flow [2022-11-18 20:14:56,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:14:56,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:14:56,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 466 transitions. [2022-11-18 20:14:56,049 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8442028985507246 [2022-11-18 20:14:56,050 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 466 transitions. [2022-11-18 20:14:56,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 466 transitions. [2022-11-18 20:14:56,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:14:56,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 466 transitions. [2022-11-18 20:14:56,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:56,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:56,054 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:56,054 INFO L175 Difference]: Start difference. First operand has 173 places, 167 transitions, 362 flow. Second operand 3 states and 466 transitions. [2022-11-18 20:14:56,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 192 transitions, 535 flow [2022-11-18 20:14:56,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 192 transitions, 533 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:14:56,059 INFO L231 Difference]: Finished difference. Result has 176 places, 181 transitions, 482 flow [2022-11-18 20:14:56,059 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=482, PETRI_PLACES=176, PETRI_TRANSITIONS=181} [2022-11-18 20:14:56,060 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, 6 predicate places. [2022-11-18 20:14:56,060 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 181 transitions, 482 flow [2022-11-18 20:14:56,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:56,060 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:14:56,061 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:56,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:14:56,061 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-18 20:14:56,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:56,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1047336099, now seen corresponding path program 1 times [2022-11-18 20:14:56,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:56,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806812578] [2022-11-18 20:14:56,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:56,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:56,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:56,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:14:56,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:56,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806812578] [2022-11-18 20:14:56,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806812578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:14:56,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:14:56,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:14:56,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78586612] [2022-11-18 20:14:56,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:14:56,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:14:56,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:56,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:14:56,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:14:56,128 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 184 [2022-11-18 20:14:56,132 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 181 transitions, 482 flow. Second operand has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:56,132 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:14:56,133 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 184 [2022-11-18 20:14:56,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:14:57,523 INFO L130 PetriNetUnfolder]: 1713/8185 cut-off events. [2022-11-18 20:14:57,523 INFO L131 PetriNetUnfolder]: For 2622/3054 co-relation queries the response was YES. [2022-11-18 20:14:57,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13944 conditions, 8185 events. 1713/8185 cut-off events. For 2622/3054 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 87696 event pairs, 781 based on Foata normal form. 17/7382 useless extension candidates. Maximal degree in co-relation 13936. Up to 2616 conditions per place. [2022-11-18 20:14:57,601 INFO L137 encePairwiseOnDemand]: 175/184 looper letters, 60 selfloop transitions, 14 changer transitions 0/208 dead transitions. [2022-11-18 20:14:57,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 208 transitions, 746 flow [2022-11-18 20:14:57,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:14:57,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:14:57,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 452 transitions. [2022-11-18 20:14:57,604 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8188405797101449 [2022-11-18 20:14:57,604 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 452 transitions. [2022-11-18 20:14:57,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 452 transitions. [2022-11-18 20:14:57,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:14:57,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 452 transitions. [2022-11-18 20:14:57,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:57,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:57,609 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:57,609 INFO L175 Difference]: Start difference. First operand has 176 places, 181 transitions, 482 flow. Second operand 3 states and 452 transitions. [2022-11-18 20:14:57,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 208 transitions, 746 flow [2022-11-18 20:14:57,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 208 transitions, 702 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:14:57,625 INFO L231 Difference]: Finished difference. Result has 178 places, 193 transitions, 580 flow [2022-11-18 20:14:57,625 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=580, PETRI_PLACES=178, PETRI_TRANSITIONS=193} [2022-11-18 20:14:57,626 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, 8 predicate places. [2022-11-18 20:14:57,626 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 193 transitions, 580 flow [2022-11-18 20:14:57,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:57,627 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:14:57,628 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:57,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:14:57,628 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-18 20:14:57,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:57,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1527158240, now seen corresponding path program 1 times [2022-11-18 20:14:57,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:57,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783774885] [2022-11-18 20:14:57,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:57,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:57,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:14:57,657 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:14:57,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:14:57,699 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:14:57,701 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:14:57,702 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-11-18 20:14:57,702 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2022-11-18 20:14:57,702 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2022-11-18 20:14:57,702 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2022-11-18 20:14:57,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2022-11-18 20:14:57,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2022-11-18 20:14:57,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2022-11-18 20:14:57,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2022-11-18 20:14:57,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2022-11-18 20:14:57,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2022-11-18 20:14:57,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2022-11-18 20:14:57,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2022-11-18 20:14:57,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2022-11-18 20:14:57,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2022-11-18 20:14:57,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2022-11-18 20:14:57,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:14:57,711 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-18 20:14:57,712 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:14:57,713 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-18 20:14:57,758 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 20:14:57,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 230 transitions, 490 flow [2022-11-18 20:14:57,851 INFO L130 PetriNetUnfolder]: 50/469 cut-off events. [2022-11-18 20:14:57,851 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-18 20:14:57,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 497 conditions, 469 events. 50/469 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1778 event pairs, 1 based on Foata normal form. 0/391 useless extension candidates. Maximal degree in co-relation 311. Up to 16 conditions per place. [2022-11-18 20:14:57,858 INFO L82 GeneralOperation]: Start removeDead. Operand has 211 places, 230 transitions, 490 flow [2022-11-18 20:14:57,864 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 211 places, 230 transitions, 490 flow [2022-11-18 20:14:57,865 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:14:57,865 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;@39b99319, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:14:57,865 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-18 20:14:57,872 INFO L130 PetriNetUnfolder]: 2/56 cut-off events. [2022-11-18 20:14:57,872 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:14:57,872 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:14:57,873 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:57,873 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 20:14:57,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:57,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1029953345, now seen corresponding path program 1 times [2022-11-18 20:14:57,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:57,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436337112] [2022-11-18 20:14:57,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:57,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:57,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:57,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:14:57,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:57,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436337112] [2022-11-18 20:14:57,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436337112] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:14:57,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:14:57,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:14:57,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405227340] [2022-11-18 20:14:57,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:14:57,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:14:57,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:57,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:14:57,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:14:57,910 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 230 [2022-11-18 20:14:57,911 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 230 transitions, 490 flow. Second operand has 2 states, 2 states have (on average 200.5) internal successors, (401), 2 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:57,911 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:14:57,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 230 [2022-11-18 20:14:57,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:14:58,038 INFO L130 PetriNetUnfolder]: 8/423 cut-off events. [2022-11-18 20:14:58,039 INFO L131 PetriNetUnfolder]: For 50/59 co-relation queries the response was YES. [2022-11-18 20:14:58,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 423 events. 8/423 cut-off events. For 50/59 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1482 event pairs, 1 based on Foata normal form. 104/487 useless extension candidates. Maximal degree in co-relation 286. Up to 16 conditions per place. [2022-11-18 20:14:58,043 INFO L137 encePairwiseOnDemand]: 207/230 looper letters, 6 selfloop transitions, 0 changer transitions 0/206 dead transitions. [2022-11-18 20:14:58,044 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 206 transitions, 454 flow [2022-11-18 20:14:58,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:14:58,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 20:14:58,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 429 transitions. [2022-11-18 20:14:58,045 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9326086956521739 [2022-11-18 20:14:58,046 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 429 transitions. [2022-11-18 20:14:58,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 429 transitions. [2022-11-18 20:14:58,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:14:58,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 429 transitions. [2022-11-18 20:14:58,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 214.5) internal successors, (429), 2 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:58,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:58,049 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:58,049 INFO L175 Difference]: Start difference. First operand has 211 places, 230 transitions, 490 flow. Second operand 2 states and 429 transitions. [2022-11-18 20:14:58,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 206 transitions, 454 flow [2022-11-18 20:14:58,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 206 transitions, 454 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:14:58,053 INFO L231 Difference]: Finished difference. Result has 211 places, 206 transitions, 442 flow [2022-11-18 20:14:58,054 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=442, PETRI_PLACES=211, PETRI_TRANSITIONS=206} [2022-11-18 20:14:58,056 INFO L288 CegarLoopForPetriNet]: 211 programPoint places, 0 predicate places. [2022-11-18 20:14:58,056 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 206 transitions, 442 flow [2022-11-18 20:14:58,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 200.5) internal successors, (401), 2 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:58,056 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:14:58,057 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:58,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:14:58,057 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 20:14:58,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:58,057 INFO L85 PathProgramCache]: Analyzing trace with hash -142449664, now seen corresponding path program 1 times [2022-11-18 20:14:58,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:58,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655825548] [2022-11-18 20:14:58,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:58,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:58,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:58,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:14:58,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:58,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655825548] [2022-11-18 20:14:58,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655825548] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:14:58,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:14:58,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:14:58,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663534442] [2022-11-18 20:14:58,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:14:58,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:14:58,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:58,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:14:58,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:14:58,132 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 230 [2022-11-18 20:14:58,132 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 206 transitions, 442 flow. Second operand has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:58,132 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:14:58,133 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 230 [2022-11-18 20:14:58,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:14:58,222 INFO L130 PetriNetUnfolder]: 7/404 cut-off events. [2022-11-18 20:14:58,222 INFO L131 PetriNetUnfolder]: For 43/82 co-relation queries the response was YES. [2022-11-18 20:14:58,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 468 conditions, 404 events. 7/404 cut-off events. For 43/82 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1365 event pairs, 1 based on Foata normal form. 1/368 useless extension candidates. Maximal degree in co-relation 462. Up to 30 conditions per place. [2022-11-18 20:14:58,226 INFO L137 encePairwiseOnDemand]: 227/230 looper letters, 15 selfloop transitions, 2 changer transitions 0/210 dead transitions. [2022-11-18 20:14:58,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 210 transitions, 484 flow [2022-11-18 20:14:58,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:14:58,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:14:58,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 597 transitions. [2022-11-18 20:14:58,229 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8652173913043478 [2022-11-18 20:14:58,229 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 597 transitions. [2022-11-18 20:14:58,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 597 transitions. [2022-11-18 20:14:58,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:14:58,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 597 transitions. [2022-11-18 20:14:58,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:58,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:58,233 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:58,233 INFO L175 Difference]: Start difference. First operand has 211 places, 206 transitions, 442 flow. Second operand 3 states and 597 transitions. [2022-11-18 20:14:58,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 210 transitions, 484 flow [2022-11-18 20:14:58,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 210 transitions, 484 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:14:58,237 INFO L231 Difference]: Finished difference. Result has 214 places, 207 transitions, 454 flow [2022-11-18 20:14:58,238 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=454, PETRI_PLACES=214, PETRI_TRANSITIONS=207} [2022-11-18 20:14:58,240 INFO L288 CegarLoopForPetriNet]: 211 programPoint places, 3 predicate places. [2022-11-18 20:14:58,241 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 207 transitions, 454 flow [2022-11-18 20:14:58,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:58,241 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:14:58,241 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:58,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:14:58,241 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 20:14:58,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:58,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1657852070, now seen corresponding path program 1 times [2022-11-18 20:14:58,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:58,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917616603] [2022-11-18 20:14:58,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:58,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:58,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:58,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:14:58,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:58,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917616603] [2022-11-18 20:14:58,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917616603] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:14:58,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:14:58,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:14:58,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085317609] [2022-11-18 20:14:58,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:14:58,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:14:58,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:58,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:14:58,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:14:58,282 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 230 [2022-11-18 20:14:58,283 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 207 transitions, 454 flow. Second operand has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:58,283 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:14:58,283 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 230 [2022-11-18 20:14:58,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:15:12,713 INFO L130 PetriNetUnfolder]: 35177/112133 cut-off events. [2022-11-18 20:15:12,713 INFO L131 PetriNetUnfolder]: For 4871/5255 co-relation queries the response was YES. [2022-11-18 20:15:13,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165752 conditions, 112133 events. 35177/112133 cut-off events. For 4871/5255 co-relation queries the response was YES. Maximal size of possible extension queue 2846. Compared 1615303 event pairs, 13760 based on Foata normal form. 2/94166 useless extension candidates. Maximal degree in co-relation 165744. Up to 29484 conditions per place. [2022-11-18 20:15:13,836 INFO L137 encePairwiseOnDemand]: 203/230 looper letters, 62 selfloop transitions, 20 changer transitions 0/244 dead transitions. [2022-11-18 20:15:13,836 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 244 transitions, 713 flow [2022-11-18 20:15:13,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:15:13,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:15:13,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 572 transitions. [2022-11-18 20:15:13,843 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8289855072463768 [2022-11-18 20:15:13,844 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 572 transitions. [2022-11-18 20:15:13,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 572 transitions. [2022-11-18 20:15:13,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:15:13,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 572 transitions. [2022-11-18 20:15:13,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:13,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:13,850 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:13,850 INFO L175 Difference]: Start difference. First operand has 214 places, 207 transitions, 454 flow. Second operand 3 states and 572 transitions. [2022-11-18 20:15:13,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 244 transitions, 713 flow [2022-11-18 20:15:13,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 244 transitions, 711 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:15:13,864 INFO L231 Difference]: Finished difference. Result has 217 places, 227 transitions, 626 flow [2022-11-18 20:15:13,865 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=626, PETRI_PLACES=217, PETRI_TRANSITIONS=227} [2022-11-18 20:15:13,866 INFO L288 CegarLoopForPetriNet]: 211 programPoint places, 6 predicate places. [2022-11-18 20:15:13,866 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 227 transitions, 626 flow [2022-11-18 20:15:13,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:13,866 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:15:13,867 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:13,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:15:13,867 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 20:15:13,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:13,868 INFO L85 PathProgramCache]: Analyzing trace with hash 478494543, now seen corresponding path program 1 times [2022-11-18 20:15:13,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:15:13,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121298781] [2022-11-18 20:15:13,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:13,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:15:13,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:13,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:15:13,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:15:13,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121298781] [2022-11-18 20:15:13,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121298781] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:15:13,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:15:13,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:15:13,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277574010] [2022-11-18 20:15:13,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:15:13,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:15:13,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:15:13,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:15:13,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:15:13,937 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 230 [2022-11-18 20:15:13,937 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 227 transitions, 626 flow. Second operand has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:13,938 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:15:13,938 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 230 [2022-11-18 20:15:13,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:15:31,865 INFO L130 PetriNetUnfolder]: 44862/140873 cut-off events. [2022-11-18 20:15:31,865 INFO L131 PetriNetUnfolder]: For 59713/68021 co-relation queries the response was YES. [2022-11-18 20:15:32,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267885 conditions, 140873 events. 44862/140873 cut-off events. For 59713/68021 co-relation queries the response was YES. Maximal size of possible extension queue 3266. Compared 2074678 event pairs, 21238 based on Foata normal form. 228/125514 useless extension candidates. Maximal degree in co-relation 267876. Up to 58507 conditions per place. [2022-11-18 20:15:33,520 INFO L137 encePairwiseOnDemand]: 217/230 looper letters, 92 selfloop transitions, 22 changer transitions 0/274 dead transitions. [2022-11-18 20:15:33,521 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 274 transitions, 1060 flow [2022-11-18 20:15:33,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:15:33,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:15:33,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 558 transitions. [2022-11-18 20:15:33,524 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.808695652173913 [2022-11-18 20:15:33,524 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 558 transitions. [2022-11-18 20:15:33,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 558 transitions. [2022-11-18 20:15:33,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:15:33,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 558 transitions. [2022-11-18 20:15:33,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:33,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:33,529 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:33,529 INFO L175 Difference]: Start difference. First operand has 217 places, 227 transitions, 626 flow. Second operand 3 states and 558 transitions. [2022-11-18 20:15:33,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 274 transitions, 1060 flow [2022-11-18 20:15:33,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 274 transitions, 992 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:15:33,617 INFO L231 Difference]: Finished difference. Result has 219 places, 247 transitions, 792 flow [2022-11-18 20:15:33,617 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=792, PETRI_PLACES=219, PETRI_TRANSITIONS=247} [2022-11-18 20:15:33,618 INFO L288 CegarLoopForPetriNet]: 211 programPoint places, 8 predicate places. [2022-11-18 20:15:33,618 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 247 transitions, 792 flow [2022-11-18 20:15:33,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:33,619 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:15:33,619 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:33,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:15:33,619 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 20:15:33,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:33,620 INFO L85 PathProgramCache]: Analyzing trace with hash 2009072655, now seen corresponding path program 1 times [2022-11-18 20:15:33,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:15:33,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096380411] [2022-11-18 20:15:33,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:33,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:15:33,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:33,685 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:15:33,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:15:33,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096380411] [2022-11-18 20:15:33,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096380411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:15:33,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:15:33,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:15:33,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222660576] [2022-11-18 20:15:33,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:15:33,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:15:33,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:15:33,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:15:33,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:15:33,688 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 230 [2022-11-18 20:15:33,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 247 transitions, 792 flow. Second operand has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:33,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:15:33,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 230 [2022-11-18 20:15:33,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand