./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52514887-12e5-4f1d-8565-040d95615743/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52514887-12e5-4f1d-8565-040d95615743/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_52514887-12e5-4f1d-8565-040d95615743/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52514887-12e5-4f1d-8565-040d95615743/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52514887-12e5-4f1d-8565-040d95615743/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_52514887-12e5-4f1d-8565-040d95615743/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 1fe12ce8951e45860142b9cebaa325eef531c18fa917882c03ee5396afb187f5 --- 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 18:26:27,504 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:26:27,508 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:26:27,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:26:27,542 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:26:27,547 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:26:27,548 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:26:27,552 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:26:27,557 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:26:27,558 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:26:27,560 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:26:27,562 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:26:27,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:26:27,568 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:26:27,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:26:27,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:26:27,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:26:27,581 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:26:27,583 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:26:27,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:26:27,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:26:27,590 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:26:27,592 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:26:27,593 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:26:27,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:26:27,601 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:26:27,601 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:26:27,603 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:26:27,604 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:26:27,605 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:26:27,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:26:27,607 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:26:27,609 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:26:27,610 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:26:27,611 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:26:27,611 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:26:27,612 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:26:27,612 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:26:27,612 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:26:27,613 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:26:27,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:26:27,615 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52514887-12e5-4f1d-8565-040d95615743/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-18 18:26:27,660 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:26:27,660 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:26:27,661 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:26:27,661 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:26:27,662 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:26:27,662 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:26:27,663 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:26:27,663 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:26:27,663 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:26:27,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:26:27,665 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:26:27,665 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:26:27,665 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:26:27,666 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:26:27,666 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:26:27,666 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:26:27,666 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:26:27,667 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:26:27,667 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-18 18:26:27,667 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:26:27,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:26:27,667 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:26:27,668 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:26:27,668 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:26:27,668 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:26:27,668 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:26:27,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:26:27,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:26:27,671 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:26:27,671 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:26:27,671 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:26:27,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:26:27,672 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:26:27,672 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:26:27,672 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:26:27,672 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_52514887-12e5-4f1d-8565-040d95615743/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52514887-12e5-4f1d-8565-040d95615743/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fe12ce8951e45860142b9cebaa325eef531c18fa917882c03ee5396afb187f5 [2022-11-18 18:26:27,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:26:27,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:26:27,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:26:27,969 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:26:27,970 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:26:27,974 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52514887-12e5-4f1d-8565-040d95615743/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2022-11-18 18:26:28,055 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52514887-12e5-4f1d-8565-040d95615743/bin/uautomizer-TMbwUNV5ro/data/529388550/48cc5b66f8274177b90636f2338f2044/FLAG1a0275aee [2022-11-18 18:26:28,581 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:26:28,582 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52514887-12e5-4f1d-8565-040d95615743/sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2022-11-18 18:26:28,593 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52514887-12e5-4f1d-8565-040d95615743/bin/uautomizer-TMbwUNV5ro/data/529388550/48cc5b66f8274177b90636f2338f2044/FLAG1a0275aee [2022-11-18 18:26:28,841 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52514887-12e5-4f1d-8565-040d95615743/bin/uautomizer-TMbwUNV5ro/data/529388550/48cc5b66f8274177b90636f2338f2044 [2022-11-18 18:26:28,843 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:26:28,844 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:26:28,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:26:28,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:26:28,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:26:28,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:26:28" (1/1) ... [2022-11-18 18:26:28,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@555feb07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:28, skipping insertion in model container [2022-11-18 18:26:28,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:26:28" (1/1) ... [2022-11-18 18:26:28,858 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:26:28,906 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:26:29,235 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_52514887-12e5-4f1d-8565-040d95615743/sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i[30176,30189] [2022-11-18 18:26:29,257 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:26:29,266 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:26:29,296 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_52514887-12e5-4f1d-8565-040d95615743/sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i[30176,30189] [2022-11-18 18:26:29,304 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:26:29,334 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:26:29,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:29 WrapperNode [2022-11-18 18:26:29,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:26:29,336 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:26:29,336 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:26:29,336 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:26:29,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:29" (1/1) ... [2022-11-18 18:26:29,355 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:29" (1/1) ... [2022-11-18 18:26:29,377 INFO L138 Inliner]: procedures = 172, calls = 33, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 125 [2022-11-18 18:26:29,377 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:26:29,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:26:29,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:26:29,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:26:29,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:29" (1/1) ... [2022-11-18 18:26:29,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:29" (1/1) ... [2022-11-18 18:26:29,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:29" (1/1) ... [2022-11-18 18:26:29,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:29" (1/1) ... [2022-11-18 18:26:29,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:29" (1/1) ... [2022-11-18 18:26:29,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:29" (1/1) ... [2022-11-18 18:26:29,401 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:29" (1/1) ... [2022-11-18 18:26:29,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:29" (1/1) ... [2022-11-18 18:26:29,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:26:29,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:26:29,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:26:29,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:26:29,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:29" (1/1) ... [2022-11-18 18:26:29,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:26:29,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52514887-12e5-4f1d-8565-040d95615743/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:26:29,438 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52514887-12e5-4f1d-8565-040d95615743/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:26:29,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52514887-12e5-4f1d-8565-040d95615743/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:26:29,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:26:29,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:26:29,481 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 18:26:29,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:26:29,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:26:29,483 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-18 18:26:29,484 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-18 18:26:29,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:26:29,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:26:29,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:26:29,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:26:29,486 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 18:26:29,657 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:26:29,659 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:26:29,962 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:26:29,970 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:26:29,972 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-18 18:26:29,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:26:29 BoogieIcfgContainer [2022-11-18 18:26:29,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:26:29,977 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:26:29,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:26:29,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:26:29,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:26:28" (1/3) ... [2022-11-18 18:26:29,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fdbf566 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:26:29, skipping insertion in model container [2022-11-18 18:26:29,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:29" (2/3) ... [2022-11-18 18:26:29,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fdbf566 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:26:29, skipping insertion in model container [2022-11-18 18:26:29,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:26:29" (3/3) ... [2022-11-18 18:26:29,986 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_05-lockfuns_racefree.i [2022-11-18 18:26:29,999 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:26:30,033 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:26:30,034 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-18 18:26:30,034 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:26:30,095 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-18 18:26:30,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 139 transitions, 286 flow [2022-11-18 18:26:30,226 INFO L130 PetriNetUnfolder]: 17/188 cut-off events. [2022-11-18 18:26:30,228 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 18:26:30,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 188 events. 17/188 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 551 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 103. Up to 4 conditions per place. [2022-11-18 18:26:30,234 INFO L82 GeneralOperation]: Start removeDead. Operand has 130 places, 139 transitions, 286 flow [2022-11-18 18:26:30,240 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 139 transitions, 286 flow [2022-11-18 18:26:30,250 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:26:30,257 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;@6105874, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:26:30,258 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-18 18:26:30,273 INFO L130 PetriNetUnfolder]: 1/55 cut-off events. [2022-11-18 18:26:30,273 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:26:30,274 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:26:30,274 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] [2022-11-18 18:26:30,275 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 18:26:30,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:26:30,280 INFO L85 PathProgramCache]: Analyzing trace with hash -329536389, now seen corresponding path program 1 times [2022-11-18 18:26:30,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:26:30,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491391476] [2022-11-18 18:26:30,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:26:30,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:26:30,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:26:30,473 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 18:26:30,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:26:30,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491391476] [2022-11-18 18:26:30,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491391476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:26:30,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:26:30,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:26:30,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785876728] [2022-11-18 18:26:30,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:26:30,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 18:26:30,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:26:30,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 18:26:30,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:26:30,556 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 139 [2022-11-18 18:26:30,559 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 139 transitions, 286 flow. Second operand has 2 states, 2 states have (on average 125.5) internal successors, (251), 2 states have internal predecessors, (251), 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 18:26:30,560 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:26:30,560 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 139 [2022-11-18 18:26:30,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:26:30,672 INFO L130 PetriNetUnfolder]: 1/170 cut-off events. [2022-11-18 18:26:30,673 INFO L131 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-11-18 18:26:30,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 170 events. 1/170 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 322 event pairs, 0 based on Foata normal form. 16/172 useless extension candidates. Maximal degree in co-relation 4. Up to 3 conditions per place. [2022-11-18 18:26:30,675 INFO L137 encePairwiseOnDemand]: 128/139 looper letters, 2 selfloop transitions, 0 changer transitions 0/127 dead transitions. [2022-11-18 18:26:30,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 127 transitions, 266 flow [2022-11-18 18:26:30,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 18:26:30,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 18:26:30,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 263 transitions. [2022-11-18 18:26:30,693 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9460431654676259 [2022-11-18 18:26:30,693 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 263 transitions. [2022-11-18 18:26:30,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 263 transitions. [2022-11-18 18:26:30,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:26:30,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 263 transitions. [2022-11-18 18:26:30,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 131.5) internal successors, (263), 2 states have internal predecessors, (263), 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 18:26:30,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 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 18:26:30,721 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 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 18:26:30,723 INFO L175 Difference]: Start difference. First operand has 130 places, 139 transitions, 286 flow. Second operand 2 states and 263 transitions. [2022-11-18 18:26:30,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 127 transitions, 266 flow [2022-11-18 18:26:30,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 127 transitions, 266 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:26:30,737 INFO L231 Difference]: Finished difference. Result has 130 places, 127 transitions, 262 flow [2022-11-18 18:26:30,739 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=262, PETRI_PLACES=130, PETRI_TRANSITIONS=127} [2022-11-18 18:26:30,743 INFO L288 CegarLoopForPetriNet]: 130 programPoint places, 0 predicate places. [2022-11-18 18:26:30,743 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 127 transitions, 262 flow [2022-11-18 18:26:30,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 125.5) internal successors, (251), 2 states have internal predecessors, (251), 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 18:26:30,744 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:26:30,744 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] [2022-11-18 18:26:30,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:26:30,745 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 18:26:30,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:26:30,747 INFO L85 PathProgramCache]: Analyzing trace with hash -526049894, now seen corresponding path program 1 times [2022-11-18 18:26:30,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:26:30,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118952141] [2022-11-18 18:26:30,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:26:30,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:26:30,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:26:31,001 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 18:26:31,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:26:31,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118952141] [2022-11-18 18:26:31,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118952141] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:26:31,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:26:31,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:26:31,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926494651] [2022-11-18 18:26:31,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:26:31,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:26:31,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:26:31,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:26:31,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:26:31,022 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 139 [2022-11-18 18:26:31,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 127 transitions, 262 flow. Second operand has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 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 18:26:31,023 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:26:31,023 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 139 [2022-11-18 18:26:31,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:26:31,097 INFO L130 PetriNetUnfolder]: 0/146 cut-off events. [2022-11-18 18:26:31,102 INFO L131 PetriNetUnfolder]: For 3/9 co-relation queries the response was YES. [2022-11-18 18:26:31,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 146 events. 0/146 cut-off events. For 3/9 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 154 event pairs, 0 based on Foata normal form. 1/136 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2022-11-18 18:26:31,103 INFO L137 encePairwiseOnDemand]: 136/139 looper letters, 9 selfloop transitions, 2 changer transitions 0/129 dead transitions. [2022-11-18 18:26:31,104 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 129 transitions, 288 flow [2022-11-18 18:26:31,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:26:31,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:26:31,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 366 transitions. [2022-11-18 18:26:31,110 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8776978417266187 [2022-11-18 18:26:31,112 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 366 transitions. [2022-11-18 18:26:31,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 366 transitions. [2022-11-18 18:26:31,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:26:31,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 366 transitions. [2022-11-18 18:26:31,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 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 18:26:31,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 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 18:26:31,117 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 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 18:26:31,118 INFO L175 Difference]: Start difference. First operand has 130 places, 127 transitions, 262 flow. Second operand 3 states and 366 transitions. [2022-11-18 18:26:31,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 129 transitions, 288 flow [2022-11-18 18:26:31,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 129 transitions, 288 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:26:31,122 INFO L231 Difference]: Finished difference. Result has 133 places, 127 transitions, 270 flow [2022-11-18 18:26:31,123 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=270, PETRI_PLACES=133, PETRI_TRANSITIONS=127} [2022-11-18 18:26:31,124 INFO L288 CegarLoopForPetriNet]: 130 programPoint places, 3 predicate places. [2022-11-18 18:26:31,124 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 127 transitions, 270 flow [2022-11-18 18:26:31,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 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 18:26:31,124 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:26:31,125 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] [2022-11-18 18:26:31,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:26:31,127 INFO L420 AbstractCegarLoop]: === Iteration 3 === 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 18:26:31,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:26:31,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1313569019, now seen corresponding path program 1 times [2022-11-18 18:26:31,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:26:31,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189398505] [2022-11-18 18:26:31,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:26:31,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:26:31,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:26:31,190 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:26:31,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:26:31,236 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:26:31,236 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 18:26:31,237 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-11-18 18:26:31,239 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2022-11-18 18:26:31,240 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2022-11-18 18:26:31,240 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2022-11-18 18:26:31,240 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2022-11-18 18:26:31,240 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2022-11-18 18:26:31,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2022-11-18 18:26:31,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2022-11-18 18:26:31,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2022-11-18 18:26:31,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2022-11-18 18:26:31,242 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2022-11-18 18:26:31,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:26:31,242 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-18 18:26:31,245 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 18:26:31,245 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 18:26:31,281 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 18:26:31,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 190 transitions, 398 flow [2022-11-18 18:26:31,350 INFO L130 PetriNetUnfolder]: 31/319 cut-off events. [2022-11-18 18:26:31,350 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-18 18:26:31,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 319 events. 31/319 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1149 event pairs, 0 based on Foata normal form. 0/269 useless extension candidates. Maximal degree in co-relation 190. Up to 8 conditions per place. [2022-11-18 18:26:31,354 INFO L82 GeneralOperation]: Start removeDead. Operand has 176 places, 190 transitions, 398 flow [2022-11-18 18:26:31,357 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 190 transitions, 398 flow [2022-11-18 18:26:31,359 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:26:31,360 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;@6105874, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:26:31,360 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-11-18 18:26:31,367 INFO L130 PetriNetUnfolder]: 1/55 cut-off events. [2022-11-18 18:26:31,367 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:26:31,368 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:26:31,368 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] [2022-11-18 18:26:31,368 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 18:26:31,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:26:31,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1768858105, now seen corresponding path program 1 times [2022-11-18 18:26:31,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:26:31,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956797580] [2022-11-18 18:26:31,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:26:31,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:26:31,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:26:31,400 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 18:26:31,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:26:31,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956797580] [2022-11-18 18:26:31,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956797580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:26:31,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:26:31,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:26:31,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131955242] [2022-11-18 18:26:31,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:26:31,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 18:26:31,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:26:31,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 18:26:31,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:26:31,404 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 190 [2022-11-18 18:26:31,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 190 transitions, 398 flow. Second operand has 2 states, 2 states have (on average 168.5) internal successors, (337), 2 states have internal predecessors, (337), 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 18:26:31,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:26:31,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 190 [2022-11-18 18:26:31,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:26:31,496 INFO L130 PetriNetUnfolder]: 3/288 cut-off events. [2022-11-18 18:26:31,496 INFO L131 PetriNetUnfolder]: For 20/26 co-relation queries the response was YES. [2022-11-18 18:26:31,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 288 events. 3/288 cut-off events. For 20/26 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 844 event pairs, 0 based on Foata normal form. 42/305 useless extension candidates. Maximal degree in co-relation 174. Up to 7 conditions per place. [2022-11-18 18:26:31,498 INFO L137 encePairwiseOnDemand]: 173/190 looper letters, 4 selfloop transitions, 0 changer transitions 0/172 dead transitions. [2022-11-18 18:26:31,498 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 172 transitions, 370 flow [2022-11-18 18:26:31,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 18:26:31,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 18:26:31,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 357 transitions. [2022-11-18 18:26:31,500 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9394736842105263 [2022-11-18 18:26:31,500 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 357 transitions. [2022-11-18 18:26:31,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 357 transitions. [2022-11-18 18:26:31,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:26:31,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 357 transitions. [2022-11-18 18:26:31,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 178.5) internal successors, (357), 2 states have internal predecessors, (357), 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 18:26:31,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 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 18:26:31,504 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 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 18:26:31,504 INFO L175 Difference]: Start difference. First operand has 176 places, 190 transitions, 398 flow. Second operand 2 states and 357 transitions. [2022-11-18 18:26:31,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 172 transitions, 370 flow [2022-11-18 18:26:31,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 172 transitions, 370 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:26:31,509 INFO L231 Difference]: Finished difference. Result has 176 places, 172 transitions, 362 flow [2022-11-18 18:26:31,509 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=362, PETRI_PLACES=176, PETRI_TRANSITIONS=172} [2022-11-18 18:26:31,510 INFO L288 CegarLoopForPetriNet]: 176 programPoint places, 0 predicate places. [2022-11-18 18:26:31,510 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 172 transitions, 362 flow [2022-11-18 18:26:31,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 168.5) internal successors, (337), 2 states have internal predecessors, (337), 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 18:26:31,511 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:26:31,511 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] [2022-11-18 18:26:31,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 18:26:31,512 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 18:26:31,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:26:31,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1572344600, now seen corresponding path program 1 times [2022-11-18 18:26:31,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:26:31,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335114010] [2022-11-18 18:26:31,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:26:31,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:26:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:26:31,573 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 18:26:31,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:26:31,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335114010] [2022-11-18 18:26:31,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335114010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:26:31,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:26:31,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:26:31,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007712101] [2022-11-18 18:26:31,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:26:31,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:26:31,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:26:31,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:26:31,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:26:31,582 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 190 [2022-11-18 18:26:31,583 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 172 transitions, 362 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 18:26:31,584 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:26:31,584 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 190 [2022-11-18 18:26:31,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:26:31,664 INFO L130 PetriNetUnfolder]: 2/264 cut-off events. [2022-11-18 18:26:31,664 INFO L131 PetriNetUnfolder]: For 26/67 co-relation queries the response was YES. [2022-11-18 18:26:31,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 264 events. 2/264 cut-off events. For 26/67 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 687 event pairs, 0 based on Foata normal form. 1/243 useless extension candidates. Maximal degree in co-relation 295. Up to 16 conditions per place. [2022-11-18 18:26:31,666 INFO L137 encePairwiseOnDemand]: 187/190 looper letters, 13 selfloop transitions, 2 changer transitions 0/176 dead transitions. [2022-11-18 18:26:31,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 176 transitions, 400 flow [2022-11-18 18:26:31,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:26:31,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:26:31,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 499 transitions. [2022-11-18 18:26:31,669 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.875438596491228 [2022-11-18 18:26:31,669 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 499 transitions. [2022-11-18 18:26:31,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 499 transitions. [2022-11-18 18:26:31,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:26:31,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 499 transitions. [2022-11-18 18:26:31,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 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 18:26:31,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 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 18:26:31,674 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 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 18:26:31,674 INFO L175 Difference]: Start difference. First operand has 176 places, 172 transitions, 362 flow. Second operand 3 states and 499 transitions. [2022-11-18 18:26:31,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 176 transitions, 400 flow [2022-11-18 18:26:31,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 176 transitions, 400 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:26:31,679 INFO L231 Difference]: Finished difference. Result has 179 places, 173 transitions, 374 flow [2022-11-18 18:26:31,679 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=374, PETRI_PLACES=179, PETRI_TRANSITIONS=173} [2022-11-18 18:26:31,681 INFO L288 CegarLoopForPetriNet]: 176 programPoint places, 3 predicate places. [2022-11-18 18:26:31,681 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 173 transitions, 374 flow [2022-11-18 18:26:31,682 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 18:26:31,682 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:26:31,682 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 18:26:31,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:26:31,682 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 18:26:31,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:26:31,683 INFO L85 PathProgramCache]: Analyzing trace with hash -998152623, now seen corresponding path program 1 times [2022-11-18 18:26:31,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:26:31,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721860140] [2022-11-18 18:26:31,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:26:31,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:26:31,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:26:31,748 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 18:26:31,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:26:31,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721860140] [2022-11-18 18:26:31,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721860140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:26:31,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:26:31,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:26:31,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402363154] [2022-11-18 18:26:31,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:26:31,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:26:31,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:26:31,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:26:31,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:26:31,754 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 190 [2022-11-18 18:26:31,755 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 173 transitions, 374 flow. Second operand has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 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 18:26:31,755 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:26:31,755 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 190 [2022-11-18 18:26:31,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:26:33,235 INFO L130 PetriNetUnfolder]: 1376/7231 cut-off events. [2022-11-18 18:26:33,235 INFO L131 PetriNetUnfolder]: For 237/294 co-relation queries the response was YES. [2022-11-18 18:26:33,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9750 conditions, 7231 events. 1376/7231 cut-off events. For 237/294 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 76662 event pairs, 550 based on Foata normal form. 2/6238 useless extension candidates. Maximal degree in co-relation 9743. Up to 1414 conditions per place. [2022-11-18 18:26:33,294 INFO L137 encePairwiseOnDemand]: 171/190 looper letters, 42 selfloop transitions, 14 changer transitions 0/198 dead transitions. [2022-11-18 18:26:33,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 198 transitions, 547 flow [2022-11-18 18:26:33,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:26:33,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:26:33,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 484 transitions. [2022-11-18 18:26:33,299 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8491228070175438 [2022-11-18 18:26:33,299 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 484 transitions. [2022-11-18 18:26:33,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 484 transitions. [2022-11-18 18:26:33,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:26:33,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 484 transitions. [2022-11-18 18:26:33,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 18:26:33,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 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 18:26:33,305 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 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 18:26:33,305 INFO L175 Difference]: Start difference. First operand has 179 places, 173 transitions, 374 flow. Second operand 3 states and 484 transitions. [2022-11-18 18:26:33,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 198 transitions, 547 flow [2022-11-18 18:26:33,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 198 transitions, 545 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:26:33,313 INFO L231 Difference]: Finished difference. Result has 182 places, 187 transitions, 494 flow [2022-11-18 18:26:33,314 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=494, PETRI_PLACES=182, PETRI_TRANSITIONS=187} [2022-11-18 18:26:33,316 INFO L288 CegarLoopForPetriNet]: 176 programPoint places, 6 predicate places. [2022-11-18 18:26:33,317 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 187 transitions, 494 flow [2022-11-18 18:26:33,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 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 18:26:33,317 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:26:33,317 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] [2022-11-18 18:26:33,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 18:26:33,318 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 18:26:33,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:26:33,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1651941610, now seen corresponding path program 1 times [2022-11-18 18:26:33,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:26:33,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316165244] [2022-11-18 18:26:33,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:26:33,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:26:33,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:26:33,391 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 18:26:33,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:26:33,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316165244] [2022-11-18 18:26:33,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316165244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:26:33,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:26:33,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:26:33,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845799566] [2022-11-18 18:26:33,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:26:33,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:26:33,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:26:33,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:26:33,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:26:33,394 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 190 [2022-11-18 18:26:33,395 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 187 transitions, 494 flow. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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 18:26:33,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:26:33,398 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 190 [2022-11-18 18:26:33,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:26:34,992 INFO L130 PetriNetUnfolder]: 1713/8618 cut-off events. [2022-11-18 18:26:34,993 INFO L131 PetriNetUnfolder]: For 2673/3093 co-relation queries the response was YES. [2022-11-18 18:26:35,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14377 conditions, 8618 events. 1713/8618 cut-off events. For 2673/3093 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 93639 event pairs, 781 based on Foata normal form. 17/7820 useless extension candidates. Maximal degree in co-relation 14369. Up to 2616 conditions per place. [2022-11-18 18:26:35,077 INFO L137 encePairwiseOnDemand]: 181/190 looper letters, 60 selfloop transitions, 14 changer transitions 0/214 dead transitions. [2022-11-18 18:26:35,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 214 transitions, 758 flow [2022-11-18 18:26:35,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:26:35,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:26:35,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 470 transitions. [2022-11-18 18:26:35,085 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8245614035087719 [2022-11-18 18:26:35,086 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 470 transitions. [2022-11-18 18:26:35,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 470 transitions. [2022-11-18 18:26:35,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:26:35,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 470 transitions. [2022-11-18 18:26:35,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 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 18:26:35,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 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 18:26:35,090 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 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 18:26:35,091 INFO L175 Difference]: Start difference. First operand has 182 places, 187 transitions, 494 flow. Second operand 3 states and 470 transitions. [2022-11-18 18:26:35,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 214 transitions, 758 flow [2022-11-18 18:26:35,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 214 transitions, 714 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 18:26:35,105 INFO L231 Difference]: Finished difference. Result has 184 places, 199 transitions, 592 flow [2022-11-18 18:26:35,106 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=592, PETRI_PLACES=184, PETRI_TRANSITIONS=199} [2022-11-18 18:26:35,108 INFO L288 CegarLoopForPetriNet]: 176 programPoint places, 8 predicate places. [2022-11-18 18:26:35,108 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 199 transitions, 592 flow [2022-11-18 18:26:35,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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 18:26:35,108 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:26:35,109 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] [2022-11-18 18:26:35,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 18:26:35,109 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 18:26:35,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:26:35,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1760515082, now seen corresponding path program 1 times [2022-11-18 18:26:35,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:26:35,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971077810] [2022-11-18 18:26:35,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:26:35,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:26:35,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:26:35,162 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:26:35,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:26:35,185 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:26:35,186 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 18:26:35,186 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-11-18 18:26:35,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2022-11-18 18:26:35,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2022-11-18 18:26:35,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2022-11-18 18:26:35,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2022-11-18 18:26:35,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2022-11-18 18:26:35,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2022-11-18 18:26:35,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2022-11-18 18:26:35,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2022-11-18 18:26:35,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2022-11-18 18:26:35,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2022-11-18 18:26:35,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2022-11-18 18:26:35,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2022-11-18 18:26:35,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2022-11-18 18:26:35,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2022-11-18 18:26:35,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 18:26:35,190 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-18 18:26:35,191 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 18:26:35,191 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-18 18:26:35,228 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 18:26:35,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 222 places, 241 transitions, 512 flow [2022-11-18 18:26:35,328 INFO L130 PetriNetUnfolder]: 50/495 cut-off events. [2022-11-18 18:26:35,328 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-18 18:26:35,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 523 conditions, 495 events. 50/495 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2011 event pairs, 1 based on Foata normal form. 0/417 useless extension candidates. Maximal degree in co-relation 327. Up to 16 conditions per place. [2022-11-18 18:26:35,333 INFO L82 GeneralOperation]: Start removeDead. Operand has 222 places, 241 transitions, 512 flow [2022-11-18 18:26:35,339 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 222 places, 241 transitions, 512 flow [2022-11-18 18:26:35,340 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:26:35,341 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;@6105874, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:26:35,341 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-18 18:26:35,348 INFO L130 PetriNetUnfolder]: 1/55 cut-off events. [2022-11-18 18:26:35,348 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:26:35,348 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:26:35,348 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] [2022-11-18 18:26:35,349 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 18:26:35,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:26:35,349 INFO L85 PathProgramCache]: Analyzing trace with hash -520009078, now seen corresponding path program 1 times [2022-11-18 18:26:35,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:26:35,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939869686] [2022-11-18 18:26:35,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:26:35,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:26:35,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:26:35,374 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 18:26:35,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:26:35,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939869686] [2022-11-18 18:26:35,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939869686] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:26:35,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:26:35,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:26:35,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897349102] [2022-11-18 18:26:35,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:26:35,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 18:26:35,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:26:35,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 18:26:35,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:26:35,378 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 241 [2022-11-18 18:26:35,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 241 transitions, 512 flow. Second operand has 2 states, 2 states have (on average 211.5) internal successors, (423), 2 states have internal predecessors, (423), 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 18:26:35,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:26:35,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 241 [2022-11-18 18:26:35,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:26:35,532 INFO L130 PetriNetUnfolder]: 8/449 cut-off events. [2022-11-18 18:26:35,533 INFO L131 PetriNetUnfolder]: For 56/73 co-relation queries the response was YES. [2022-11-18 18:26:35,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 449 events. 8/449 cut-off events. For 56/73 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1644 event pairs, 1 based on Foata normal form. 103/512 useless extension candidates. Maximal degree in co-relation 302. Up to 16 conditions per place. [2022-11-18 18:26:35,536 INFO L137 encePairwiseOnDemand]: 218/241 looper letters, 6 selfloop transitions, 0 changer transitions 0/217 dead transitions. [2022-11-18 18:26:35,536 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 217 transitions, 476 flow [2022-11-18 18:26:35,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 18:26:35,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 18:26:35,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 451 transitions. [2022-11-18 18:26:35,538 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9356846473029046 [2022-11-18 18:26:35,538 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 451 transitions. [2022-11-18 18:26:35,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 451 transitions. [2022-11-18 18:26:35,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:26:35,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 451 transitions. [2022-11-18 18:26:35,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 225.5) internal successors, (451), 2 states have internal predecessors, (451), 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 18:26:35,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 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 18:26:35,543 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 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 18:26:35,543 INFO L175 Difference]: Start difference. First operand has 222 places, 241 transitions, 512 flow. Second operand 2 states and 451 transitions. [2022-11-18 18:26:35,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 217 transitions, 476 flow [2022-11-18 18:26:35,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 217 transitions, 476 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:26:35,547 INFO L231 Difference]: Finished difference. Result has 222 places, 217 transitions, 464 flow [2022-11-18 18:26:35,548 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=464, PETRI_PLACES=222, PETRI_TRANSITIONS=217} [2022-11-18 18:26:35,549 INFO L288 CegarLoopForPetriNet]: 222 programPoint places, 0 predicate places. [2022-11-18 18:26:35,549 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 217 transitions, 464 flow [2022-11-18 18:26:35,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 211.5) internal successors, (423), 2 states have internal predecessors, (423), 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 18:26:35,550 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:26:35,550 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] [2022-11-18 18:26:35,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 18:26:35,550 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 18:26:35,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:26:35,551 INFO L85 PathProgramCache]: Analyzing trace with hash -716522583, now seen corresponding path program 1 times [2022-11-18 18:26:35,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:26:35,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867945701] [2022-11-18 18:26:35,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:26:35,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:26:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:26:35,590 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 18:26:35,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:26:35,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867945701] [2022-11-18 18:26:35,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867945701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:26:35,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:26:35,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:26:35,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025582418] [2022-11-18 18:26:35,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:26:35,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:26:35,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:26:35,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:26:35,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:26:35,594 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 241 [2022-11-18 18:26:35,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 217 transitions, 464 flow. Second operand has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 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 18:26:35,595 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:26:35,595 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 241 [2022-11-18 18:26:35,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:26:35,707 INFO L130 PetriNetUnfolder]: 7/425 cut-off events. [2022-11-18 18:26:35,707 INFO L131 PetriNetUnfolder]: For 79/196 co-relation queries the response was YES. [2022-11-18 18:26:35,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 489 conditions, 425 events. 7/425 cut-off events. For 79/196 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1500 event pairs, 1 based on Foata normal form. 1/389 useless extension candidates. Maximal degree in co-relation 483. Up to 30 conditions per place. [2022-11-18 18:26:35,712 INFO L137 encePairwiseOnDemand]: 238/241 looper letters, 15 selfloop transitions, 2 changer transitions 0/221 dead transitions. [2022-11-18 18:26:35,712 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 221 transitions, 506 flow [2022-11-18 18:26:35,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:26:35,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:26:35,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 630 transitions. [2022-11-18 18:26:35,714 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8713692946058091 [2022-11-18 18:26:35,715 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 630 transitions. [2022-11-18 18:26:35,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 630 transitions. [2022-11-18 18:26:35,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:26:35,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 630 transitions. [2022-11-18 18:26:35,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 210.0) internal successors, (630), 3 states have internal predecessors, (630), 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 18:26:35,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 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 18:26:35,719 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 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 18:26:35,720 INFO L175 Difference]: Start difference. First operand has 222 places, 217 transitions, 464 flow. Second operand 3 states and 630 transitions. [2022-11-18 18:26:35,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 221 transitions, 506 flow [2022-11-18 18:26:35,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 221 transitions, 506 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:26:35,725 INFO L231 Difference]: Finished difference. Result has 225 places, 218 transitions, 476 flow [2022-11-18 18:26:35,725 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=476, PETRI_PLACES=225, PETRI_TRANSITIONS=218} [2022-11-18 18:26:35,726 INFO L288 CegarLoopForPetriNet]: 222 programPoint places, 3 predicate places. [2022-11-18 18:26:35,726 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 218 transitions, 476 flow [2022-11-18 18:26:35,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 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 18:26:35,727 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:26:35,727 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 18:26:35,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 18:26:35,727 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 18:26:35,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:26:35,728 INFO L85 PathProgramCache]: Analyzing trace with hash -321678637, now seen corresponding path program 1 times [2022-11-18 18:26:35,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:26:35,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505804429] [2022-11-18 18:26:35,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:26:35,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:26:35,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:26:35,764 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 18:26:35,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:26:35,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505804429] [2022-11-18 18:26:35,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505804429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:26:35,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:26:35,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:26:35,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251111360] [2022-11-18 18:26:35,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:26:35,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:26:35,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:26:35,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:26:35,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:26:35,767 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 241 [2022-11-18 18:26:35,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 218 transitions, 476 flow. Second operand has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:26:35,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:26:35,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 241 [2022-11-18 18:26:35,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:26:50,821 INFO L130 PetriNetUnfolder]: 35166/109927 cut-off events. [2022-11-18 18:26:50,822 INFO L131 PetriNetUnfolder]: For 5058/5394 co-relation queries the response was YES. [2022-11-18 18:26:51,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163538 conditions, 109927 events. 35166/109927 cut-off events. For 5058/5394 co-relation queries the response was YES. Maximal size of possible extension queue 2813. Compared 1568178 event pairs, 14848 based on Foata normal form. 2/92336 useless extension candidates. Maximal degree in co-relation 163530. Up to 29486 conditions per place. [2022-11-18 18:26:51,896 INFO L137 encePairwiseOnDemand]: 214/241 looper letters, 62 selfloop transitions, 20 changer transitions 0/255 dead transitions. [2022-11-18 18:26:51,897 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 255 transitions, 735 flow [2022-11-18 18:26:51,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:26:51,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:26:51,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 605 transitions. [2022-11-18 18:26:51,899 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8367911479944675 [2022-11-18 18:26:51,899 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 605 transitions. [2022-11-18 18:26:51,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 605 transitions. [2022-11-18 18:26:51,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:26:51,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 605 transitions. [2022-11-18 18:26:51,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 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 18:26:51,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 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 18:26:51,905 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 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 18:26:51,905 INFO L175 Difference]: Start difference. First operand has 225 places, 218 transitions, 476 flow. Second operand 3 states and 605 transitions. [2022-11-18 18:26:51,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 255 transitions, 735 flow [2022-11-18 18:26:51,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 255 transitions, 733 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:26:51,918 INFO L231 Difference]: Finished difference. Result has 228 places, 238 transitions, 648 flow [2022-11-18 18:26:51,919 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=648, PETRI_PLACES=228, PETRI_TRANSITIONS=238} [2022-11-18 18:26:51,920 INFO L288 CegarLoopForPetriNet]: 222 programPoint places, 6 predicate places. [2022-11-18 18:26:51,921 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 238 transitions, 648 flow [2022-11-18 18:26:51,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:26:51,921 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:26:51,921 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] [2022-11-18 18:26:51,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 18:26:51,922 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 18:26:51,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:26:51,924 INFO L85 PathProgramCache]: Analyzing trace with hash -556724121, now seen corresponding path program 1 times [2022-11-18 18:26:51,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:26:51,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755156401] [2022-11-18 18:26:51,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:26:51,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:26:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:26:51,979 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 18:26:51,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:26:51,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755156401] [2022-11-18 18:26:51,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755156401] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:26:51,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:26:51,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:26:51,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83845310] [2022-11-18 18:26:51,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:26:51,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:26:51,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:26:51,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:26:51,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:26:51,983 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 241 [2022-11-18 18:26:51,984 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 238 transitions, 648 flow. Second operand has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 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 18:26:51,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:26:51,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 241 [2022-11-18 18:26:51,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:27:11,028 INFO L130 PetriNetUnfolder]: 44875/146172 cut-off events. [2022-11-18 18:27:11,028 INFO L131 PetriNetUnfolder]: For 59198/65926 co-relation queries the response was YES. [2022-11-18 18:27:11,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273170 conditions, 146172 events. 44875/146172 cut-off events. For 59198/65926 co-relation queries the response was YES. Maximal size of possible extension queue 3486. Compared 2194372 event pairs, 21503 based on Foata normal form. 245/130856 useless extension candidates. Maximal degree in co-relation 273161. Up to 58501 conditions per place. [2022-11-18 18:27:12,525 INFO L137 encePairwiseOnDemand]: 228/241 looper letters, 92 selfloop transitions, 22 changer transitions 0/285 dead transitions. [2022-11-18 18:27:12,525 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 285 transitions, 1082 flow [2022-11-18 18:27:12,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:27:12,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:27:12,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-11-18 18:27:12,527 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8174273858921162 [2022-11-18 18:27:12,528 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-11-18 18:27:12,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-11-18 18:27:12,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:27:12,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-11-18 18:27:12,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 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 18:27:12,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 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 18:27:12,532 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 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 18:27:12,533 INFO L175 Difference]: Start difference. First operand has 228 places, 238 transitions, 648 flow. Second operand 3 states and 591 transitions. [2022-11-18 18:27:12,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 285 transitions, 1082 flow [2022-11-18 18:27:12,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 285 transitions, 1014 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 18:27:12,618 INFO L231 Difference]: Finished difference. Result has 230 places, 258 transitions, 814 flow [2022-11-18 18:27:12,619 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=814, PETRI_PLACES=230, PETRI_TRANSITIONS=258} [2022-11-18 18:27:12,620 INFO L288 CegarLoopForPetriNet]: 222 programPoint places, 8 predicate places. [2022-11-18 18:27:12,620 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 258 transitions, 814 flow [2022-11-18 18:27:12,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 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 18:27:12,620 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:27:12,621 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] [2022-11-18 18:27:12,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 18:27:12,621 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 18:27:12,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:27:12,621 INFO L85 PathProgramCache]: Analyzing trace with hash -554711269, now seen corresponding path program 1 times [2022-11-18 18:27:12,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:27:12,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131219960] [2022-11-18 18:27:12,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:12,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:27:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:27:12,683 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 18:27:12,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:27:12,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131219960] [2022-11-18 18:27:12,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131219960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:27:12,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:27:12,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:27:12,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595382362] [2022-11-18 18:27:12,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:27:12,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:27:12,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:27:12,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:27:12,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:27:12,686 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 241 [2022-11-18 18:27:12,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 258 transitions, 814 flow. Second operand has 3 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 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 18:27:12,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:27:12,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 241 [2022-11-18 18:27:12,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand