./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/40_barrier_vf.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e04fb08f 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_ff538ed6-011a-47ac-9148-5f66c1c09a34/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff538ed6-011a-47ac-9148-5f66c1c09a34/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff538ed6-011a-47ac-9148-5f66c1c09a34/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff538ed6-011a-47ac-9148-5f66c1c09a34/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/40_barrier_vf.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff538ed6-011a-47ac-9148-5f66c1c09a34/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff538ed6-011a-47ac-9148-5f66c1c09a34/bin/uautomizer-tPACEb0tL8 --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 5eef73b6b2655059556d731e3a5babc181132142f2417a2cf863165dd8efda84 --- 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-e04fb08 [2022-11-16 11:24:46,228 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:24:46,233 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:24:46,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:24:46,268 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:24:46,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:24:46,275 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:24:46,281 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:24:46,283 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:24:46,289 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:24:46,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:24:46,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:24:46,294 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:24:46,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:24:46,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:24:46,303 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:24:46,305 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:24:46,306 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:24:46,308 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:24:46,316 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:24:46,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:24:46,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:24:46,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:24:46,324 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:24:46,334 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:24:46,335 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:24:46,335 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:24:46,337 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:24:46,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:24:46,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:24:46,340 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:24:46,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:24:46,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:24:46,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:24:46,348 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:24:46,348 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:24:46,349 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:24:46,350 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:24:46,350 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:24:46,351 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:24:46,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:24:46,353 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff538ed6-011a-47ac-9148-5f66c1c09a34/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-16 11:24:46,393 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:24:46,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:24:46,394 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:24:46,394 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:24:46,396 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:24:46,396 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:24:46,397 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:24:46,397 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:24:46,397 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:24:46,398 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:24:46,399 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:24:46,399 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:24:46,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:24:46,400 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:24:46,400 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:24:46,401 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:24:46,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:24:46,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:24:46,401 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-16 11:24:46,402 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:24:46,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:24:46,402 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:24:46,403 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:24:46,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:24:46,403 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:24:46,403 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:24:46,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:24:46,405 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:24:46,406 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:24:46,406 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:24:46,406 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:24:46,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:24:46,407 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:24:46,407 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:24:46,408 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:24:46,408 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_ff538ed6-011a-47ac-9148-5f66c1c09a34/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff538ed6-011a-47ac-9148-5f66c1c09a34/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5eef73b6b2655059556d731e3a5babc181132142f2417a2cf863165dd8efda84 [2022-11-16 11:24:46,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:24:46,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:24:46,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:24:46,707 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:24:46,708 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:24:46,710 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff538ed6-011a-47ac-9148-5f66c1c09a34/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread-ext/40_barrier_vf.i [2022-11-16 11:24:46,781 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff538ed6-011a-47ac-9148-5f66c1c09a34/bin/uautomizer-tPACEb0tL8/data/fc6518a88/f5f3a4c550794ef4bfb3f85cdb5acdac/FLAG7e6ad5635 [2022-11-16 11:24:47,341 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:24:47,342 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff538ed6-011a-47ac-9148-5f66c1c09a34/sv-benchmarks/c/pthread-ext/40_barrier_vf.i [2022-11-16 11:24:47,379 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff538ed6-011a-47ac-9148-5f66c1c09a34/bin/uautomizer-tPACEb0tL8/data/fc6518a88/f5f3a4c550794ef4bfb3f85cdb5acdac/FLAG7e6ad5635 [2022-11-16 11:24:47,657 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff538ed6-011a-47ac-9148-5f66c1c09a34/bin/uautomizer-tPACEb0tL8/data/fc6518a88/f5f3a4c550794ef4bfb3f85cdb5acdac [2022-11-16 11:24:47,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:24:47,662 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:24:47,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:24:47,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:24:47,673 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:24:47,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:24:47" (1/1) ... [2022-11-16 11:24:47,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20c5bbee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:47, skipping insertion in model container [2022-11-16 11:24:47,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:24:47" (1/1) ... [2022-11-16 11:24:47,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:24:47,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:24:47,984 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-16 11:24:48,171 WARN L229 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_ff538ed6-011a-47ac-9148-5f66c1c09a34/sv-benchmarks/c/pthread-ext/40_barrier_vf.i[31163,31176] [2022-11-16 11:24:48,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:24:48,196 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:24:48,232 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-16 11:24:48,270 WARN L229 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_ff538ed6-011a-47ac-9148-5f66c1c09a34/sv-benchmarks/c/pthread-ext/40_barrier_vf.i[31163,31176] [2022-11-16 11:24:48,273 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:24:48,310 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:24:48,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:48 WrapperNode [2022-11-16 11:24:48,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:24:48,313 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:24:48,313 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:24:48,313 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:24:48,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:48" (1/1) ... [2022-11-16 11:24:48,357 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:48" (1/1) ... [2022-11-16 11:24:48,396 INFO L138 Inliner]: procedures = 174, calls = 25, calls flagged for inlining = 10, calls inlined = 12, statements flattened = 124 [2022-11-16 11:24:48,396 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:24:48,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:24:48,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:24:48,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:24:48,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:48" (1/1) ... [2022-11-16 11:24:48,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:48" (1/1) ... [2022-11-16 11:24:48,435 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:48" (1/1) ... [2022-11-16 11:24:48,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:48" (1/1) ... [2022-11-16 11:24:48,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:48" (1/1) ... [2022-11-16 11:24:48,458 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:48" (1/1) ... [2022-11-16 11:24:48,460 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:48" (1/1) ... [2022-11-16 11:24:48,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:48" (1/1) ... [2022-11-16 11:24:48,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:24:48,472 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:24:48,472 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:24:48,472 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:24:48,473 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:48" (1/1) ... [2022-11-16 11:24:48,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:24:48,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff538ed6-011a-47ac-9148-5f66c1c09a34/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:24:48,517 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff538ed6-011a-47ac-9148-5f66c1c09a34/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:24:48,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff538ed6-011a-47ac-9148-5f66c1c09a34/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:24:48,586 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-16 11:24:48,586 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-16 11:24:48,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:24:48,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 11:24:48,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:24:48,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:24:48,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:24:48,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:24:48,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 11:24:48,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:24:48,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:24:48,589 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:24:48,733 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:24:48,735 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:24:49,002 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:24:49,323 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:24:49,323 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 11:24:49,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:24:49 BoogieIcfgContainer [2022-11-16 11:24:49,326 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:24:49,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:24:49,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:24:49,344 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:24:49,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:24:47" (1/3) ... [2022-11-16 11:24:49,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dd8ddba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:24:49, skipping insertion in model container [2022-11-16 11:24:49,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:48" (2/3) ... [2022-11-16 11:24:49,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dd8ddba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:24:49, skipping insertion in model container [2022-11-16 11:24:49,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:24:49" (3/3) ... [2022-11-16 11:24:49,348 INFO L112 eAbstractionObserver]: Analyzing ICFG 40_barrier_vf.i [2022-11-16 11:24:49,362 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:24:49,377 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:24:49,382 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2022-11-16 11:24:49,383 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:24:49,489 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 11:24:49,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 80 transitions, 165 flow [2022-11-16 11:24:49,647 INFO L130 PetriNetUnfolder]: 4/91 cut-off events. [2022-11-16 11:24:49,649 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:24:49,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 91 events. 4/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 118 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 62. Up to 4 conditions per place. [2022-11-16 11:24:49,658 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 80 transitions, 165 flow [2022-11-16 11:24:49,664 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 80 transitions, 165 flow [2022-11-16 11:24:49,683 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:24:49,695 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;@7f6a9282, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:24:49,696 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-11-16 11:24:49,723 INFO L130 PetriNetUnfolder]: 2/38 cut-off events. [2022-11-16 11:24:49,723 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:24:49,723 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:49,724 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] [2022-11-16 11:24:49,726 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-11-16 11:24:49,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:49,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1413598157, now seen corresponding path program 1 times [2022-11-16 11:24:49,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:49,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897768227] [2022-11-16 11:24:49,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:49,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:49,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:50,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:24:50,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:50,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897768227] [2022-11-16 11:24:50,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897768227] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:50,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:50,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:24:50,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263623474] [2022-11-16 11:24:50,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:50,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:24:50,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:50,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:24:50,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:24:50,097 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 80 [2022-11-16 11:24:50,101 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 80 transitions, 165 flow. Second operand has 2 states, 2 states have (on average 57.0) internal successors, (114), 2 states have internal predecessors, (114), 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) [2022-11-16 11:24:50,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:50,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 80 [2022-11-16 11:24:50,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:50,172 INFO L130 PetriNetUnfolder]: 1/61 cut-off events. [2022-11-16 11:24:50,173 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 11:24:50,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 61 events. 1/61 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 10/66 useless extension candidates. Maximal degree in co-relation 46. Up to 9 conditions per place. [2022-11-16 11:24:50,175 INFO L137 encePairwiseOnDemand]: 65/80 looper letters, 8 selfloop transitions, 0 changer transitions 0/57 dead transitions. [2022-11-16 11:24:50,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 57 transitions, 135 flow [2022-11-16 11:24:50,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:24:50,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 11:24:50,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 135 transitions. [2022-11-16 11:24:50,196 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.84375 [2022-11-16 11:24:50,197 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 135 transitions. [2022-11-16 11:24:50,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 135 transitions. [2022-11-16 11:24:50,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:50,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 135 transitions. [2022-11-16 11:24:50,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 67.5) internal successors, (135), 2 states have internal predecessors, (135), 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) [2022-11-16 11:24:50,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 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) [2022-11-16 11:24:50,217 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 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) [2022-11-16 11:24:50,219 INFO L175 Difference]: Start difference. First operand has 80 places, 80 transitions, 165 flow. Second operand 2 states and 135 transitions. [2022-11-16 11:24:50,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 57 transitions, 135 flow [2022-11-16 11:24:50,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 57 transitions, 135 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:24:50,234 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 119 flow [2022-11-16 11:24:50,237 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=119, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2022-11-16 11:24:50,248 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, -20 predicate places. [2022-11-16 11:24:50,249 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 119 flow [2022-11-16 11:24:50,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 57.0) internal successors, (114), 2 states have internal predecessors, (114), 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) [2022-11-16 11:24:50,250 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:50,250 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] [2022-11-16 11:24:50,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:24:50,252 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-11-16 11:24:50,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:50,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1258177808, now seen corresponding path program 1 times [2022-11-16 11:24:50,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:50,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585638224] [2022-11-16 11:24:50,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:50,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:50,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:50,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:24:50,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:50,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585638224] [2022-11-16 11:24:50,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585638224] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:50,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:50,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:24:50,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863509006] [2022-11-16 11:24:50,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:50,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:24:50,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:50,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:24:50,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:24:50,395 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 80 [2022-11-16 11:24:50,400 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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) [2022-11-16 11:24:50,401 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:50,401 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 80 [2022-11-16 11:24:50,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:50,443 INFO L130 PetriNetUnfolder]: 0/61 cut-off events. [2022-11-16 11:24:50,444 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 11:24:50,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 61 events. 0/61 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 31 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 0. Up to 10 conditions per place. [2022-11-16 11:24:50,444 INFO L137 encePairwiseOnDemand]: 74/80 looper letters, 15 selfloop transitions, 4 changer transitions 0/56 dead transitions. [2022-11-16 11:24:50,445 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 56 transitions, 155 flow [2022-11-16 11:24:50,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:24:50,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:24:50,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 153 transitions. [2022-11-16 11:24:50,447 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6375 [2022-11-16 11:24:50,447 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 153 transitions. [2022-11-16 11:24:50,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 153 transitions. [2022-11-16 11:24:50,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:50,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 153 transitions. [2022-11-16 11:24:50,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:50,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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) [2022-11-16 11:24:50,461 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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) [2022-11-16 11:24:50,462 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 119 flow. Second operand 3 states and 153 transitions. [2022-11-16 11:24:50,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 56 transitions, 155 flow [2022-11-16 11:24:50,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 56 transitions, 155 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:24:50,464 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 123 flow [2022-11-16 11:24:50,464 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2022-11-16 11:24:50,465 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, -20 predicate places. [2022-11-16 11:24:50,465 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 123 flow [2022-11-16 11:24:50,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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) [2022-11-16 11:24:50,466 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:50,466 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] [2022-11-16 11:24:50,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:24:50,466 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-11-16 11:24:50,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:50,467 INFO L85 PathProgramCache]: Analyzing trace with hash -737726974, now seen corresponding path program 1 times [2022-11-16 11:24:50,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:50,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844305386] [2022-11-16 11:24:50,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:50,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:24:50,490 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:24:50,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:24:50,533 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:24:50,536 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:24:50,537 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2022-11-16 11:24:50,539 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 31 remaining) [2022-11-16 11:24:50,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 31 remaining) [2022-11-16 11:24:50,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 31 remaining) [2022-11-16 11:24:50,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 31 remaining) [2022-11-16 11:24:50,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 31 remaining) [2022-11-16 11:24:50,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (24 of 31 remaining) [2022-11-16 11:24:50,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (23 of 31 remaining) [2022-11-16 11:24:50,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (22 of 31 remaining) [2022-11-16 11:24:50,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (21 of 31 remaining) [2022-11-16 11:24:50,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (20 of 31 remaining) [2022-11-16 11:24:50,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (19 of 31 remaining) [2022-11-16 11:24:50,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (18 of 31 remaining) [2022-11-16 11:24:50,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (17 of 31 remaining) [2022-11-16 11:24:50,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (16 of 31 remaining) [2022-11-16 11:24:50,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (15 of 31 remaining) [2022-11-16 11:24:50,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 31 remaining) [2022-11-16 11:24:50,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 31 remaining) [2022-11-16 11:24:50,552 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 31 remaining) [2022-11-16 11:24:50,553 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 31 remaining) [2022-11-16 11:24:50,553 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 31 remaining) [2022-11-16 11:24:50,553 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (9 of 31 remaining) [2022-11-16 11:24:50,553 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (8 of 31 remaining) [2022-11-16 11:24:50,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (7 of 31 remaining) [2022-11-16 11:24:50,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (6 of 31 remaining) [2022-11-16 11:24:50,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (5 of 31 remaining) [2022-11-16 11:24:50,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (4 of 31 remaining) [2022-11-16 11:24:50,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (3 of 31 remaining) [2022-11-16 11:24:50,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (2 of 31 remaining) [2022-11-16 11:24:50,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (1 of 31 remaining) [2022-11-16 11:24:50,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (0 of 31 remaining) [2022-11-16 11:24:50,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:24:50,558 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-16 11:24:50,560 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:24:50,561 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-16 11:24:50,605 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 11:24:50,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 130 transitions, 272 flow [2022-11-16 11:24:50,639 INFO L130 PetriNetUnfolder]: 7/154 cut-off events. [2022-11-16 11:24:50,639 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 11:24:50,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 154 events. 7/154 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 366 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 111. Up to 6 conditions per place. [2022-11-16 11:24:50,641 INFO L82 GeneralOperation]: Start removeDead. Operand has 130 places, 130 transitions, 272 flow [2022-11-16 11:24:50,644 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 130 transitions, 272 flow [2022-11-16 11:24:50,645 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:24:50,646 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;@7f6a9282, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:24:50,646 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2022-11-16 11:24:50,652 INFO L130 PetriNetUnfolder]: 2/38 cut-off events. [2022-11-16 11:24:50,652 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:24:50,652 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:50,652 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] [2022-11-16 11:24:50,653 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2022-11-16 11:24:50,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:50,653 INFO L85 PathProgramCache]: Analyzing trace with hash 163122496, now seen corresponding path program 1 times [2022-11-16 11:24:50,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:50,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66277061] [2022-11-16 11:24:50,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:50,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:50,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:50,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:24:50,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:50,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66277061] [2022-11-16 11:24:50,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66277061] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:50,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:50,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:24:50,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212475957] [2022-11-16 11:24:50,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:50,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:24:50,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:50,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:24:50,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:24:50,685 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 130 [2022-11-16 11:24:50,685 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 130 transitions, 272 flow. Second operand has 2 states, 2 states have (on average 85.0) internal successors, (170), 2 states have internal predecessors, (170), 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) [2022-11-16 11:24:50,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:50,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 130 [2022-11-16 11:24:50,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:50,833 INFO L130 PetriNetUnfolder]: 62/312 cut-off events. [2022-11-16 11:24:50,834 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-11-16 11:24:50,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472 conditions, 312 events. 62/312 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1479 event pairs, 56 based on Foata normal form. 90/361 useless extension candidates. Maximal degree in co-relation 358. Up to 129 conditions per place. [2022-11-16 11:24:50,838 INFO L137 encePairwiseOnDemand]: 102/130 looper letters, 16 selfloop transitions, 0 changer transitions 0/91 dead transitions. [2022-11-16 11:24:50,838 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 91 transitions, 226 flow [2022-11-16 11:24:50,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:24:50,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 11:24:50,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 212 transitions. [2022-11-16 11:24:50,846 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8153846153846154 [2022-11-16 11:24:50,848 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 212 transitions. [2022-11-16 11:24:50,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 212 transitions. [2022-11-16 11:24:50,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:50,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 212 transitions. [2022-11-16 11:24:50,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 106.0) internal successors, (212), 2 states have internal predecessors, (212), 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) [2022-11-16 11:24:50,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 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) [2022-11-16 11:24:50,857 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 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) [2022-11-16 11:24:50,857 INFO L175 Difference]: Start difference. First operand has 130 places, 130 transitions, 272 flow. Second operand 2 states and 212 transitions. [2022-11-16 11:24:50,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 91 transitions, 226 flow [2022-11-16 11:24:50,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 91 transitions, 224 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-16 11:24:50,859 INFO L231 Difference]: Finished difference. Result has 95 places, 91 transitions, 192 flow [2022-11-16 11:24:50,861 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=192, PETRI_PLACES=95, PETRI_TRANSITIONS=91} [2022-11-16 11:24:50,862 INFO L288 CegarLoopForPetriNet]: 130 programPoint places, -35 predicate places. [2022-11-16 11:24:50,864 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 91 transitions, 192 flow [2022-11-16 11:24:50,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 85.0) internal successors, (170), 2 states have internal predecessors, (170), 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) [2022-11-16 11:24:50,864 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:50,864 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] [2022-11-16 11:24:50,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:24:50,865 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2022-11-16 11:24:50,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:50,867 INFO L85 PathProgramCache]: Analyzing trace with hash 2141916195, now seen corresponding path program 1 times [2022-11-16 11:24:50,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:50,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216273940] [2022-11-16 11:24:50,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:50,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:50,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:50,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:24:50,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:50,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216273940] [2022-11-16 11:24:50,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216273940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:50,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:50,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:24:50,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230036921] [2022-11-16 11:24:50,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:50,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:24:50,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:50,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:24:50,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:24:50,920 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 130 [2022-11-16 11:24:50,920 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 91 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 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) [2022-11-16 11:24:50,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:50,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 130 [2022-11-16 11:24:50,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:51,343 INFO L130 PetriNetUnfolder]: 470/1393 cut-off events. [2022-11-16 11:24:51,344 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2022-11-16 11:24:51,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2461 conditions, 1393 events. 470/1393 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 9436 event pairs, 162 based on Foata normal form. 0/1195 useless extension candidates. Maximal degree in co-relation 2456. Up to 566 conditions per place. [2022-11-16 11:24:51,364 INFO L137 encePairwiseOnDemand]: 114/130 looper letters, 63 selfloop transitions, 12 changer transitions 0/126 dead transitions. [2022-11-16 11:24:51,364 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 126 transitions, 417 flow [2022-11-16 11:24:51,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:24:51,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:24:51,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2022-11-16 11:24:51,371 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6641025641025641 [2022-11-16 11:24:51,371 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 259 transitions. [2022-11-16 11:24:51,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 259 transitions. [2022-11-16 11:24:51,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:51,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 259 transitions. [2022-11-16 11:24:51,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 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) [2022-11-16 11:24:51,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 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) [2022-11-16 11:24:51,379 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 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) [2022-11-16 11:24:51,379 INFO L175 Difference]: Start difference. First operand has 95 places, 91 transitions, 192 flow. Second operand 3 states and 259 transitions. [2022-11-16 11:24:51,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 126 transitions, 417 flow [2022-11-16 11:24:51,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 126 transitions, 417 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:24:51,386 INFO L231 Difference]: Finished difference. Result has 99 places, 103 transitions, 296 flow [2022-11-16 11:24:51,387 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=296, PETRI_PLACES=99, PETRI_TRANSITIONS=103} [2022-11-16 11:24:51,390 INFO L288 CegarLoopForPetriNet]: 130 programPoint places, -31 predicate places. [2022-11-16 11:24:51,390 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 103 transitions, 296 flow [2022-11-16 11:24:51,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 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) [2022-11-16 11:24:51,391 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:51,391 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] [2022-11-16 11:24:51,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:24:51,392 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2022-11-16 11:24:51,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:51,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1802615132, now seen corresponding path program 1 times [2022-11-16 11:24:51,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:51,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183337514] [2022-11-16 11:24:51,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:51,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:51,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:24:51,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:51,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183337514] [2022-11-16 11:24:51,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183337514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:51,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:51,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:24:51,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493243971] [2022-11-16 11:24:51,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:51,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:24:51,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:51,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:24:51,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:24:51,531 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 130 [2022-11-16 11:24:51,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 103 transitions, 296 flow. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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) [2022-11-16 11:24:51,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:51,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 130 [2022-11-16 11:24:51,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:52,065 INFO L130 PetriNetUnfolder]: 566/1587 cut-off events. [2022-11-16 11:24:52,065 INFO L131 PetriNetUnfolder]: For 627/646 co-relation queries the response was YES. [2022-11-16 11:24:52,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3393 conditions, 1587 events. 566/1587 cut-off events. For 627/646 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 10676 event pairs, 364 based on Foata normal form. 6/1405 useless extension candidates. Maximal degree in co-relation 3386. Up to 1068 conditions per place. [2022-11-16 11:24:52,082 INFO L137 encePairwiseOnDemand]: 122/130 looper letters, 71 selfloop transitions, 10 changer transitions 0/129 dead transitions. [2022-11-16 11:24:52,083 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 129 transitions, 551 flow [2022-11-16 11:24:52,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:24:52,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:24:52,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2022-11-16 11:24:52,085 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6076923076923076 [2022-11-16 11:24:52,086 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 237 transitions. [2022-11-16 11:24:52,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 237 transitions. [2022-11-16 11:24:52,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:52,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 237 transitions. [2022-11-16 11:24:52,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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) [2022-11-16 11:24:52,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 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) [2022-11-16 11:24:52,090 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 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) [2022-11-16 11:24:52,090 INFO L175 Difference]: Start difference. First operand has 99 places, 103 transitions, 296 flow. Second operand 3 states and 237 transitions. [2022-11-16 11:24:52,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 129 transitions, 551 flow [2022-11-16 11:24:52,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 129 transitions, 515 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:24:52,105 INFO L231 Difference]: Finished difference. Result has 101 places, 111 transitions, 358 flow [2022-11-16 11:24:52,105 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=358, PETRI_PLACES=101, PETRI_TRANSITIONS=111} [2022-11-16 11:24:52,109 INFO L288 CegarLoopForPetriNet]: 130 programPoint places, -29 predicate places. [2022-11-16 11:24:52,110 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 111 transitions, 358 flow [2022-11-16 11:24:52,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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) [2022-11-16 11:24:52,111 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:52,111 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:52,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:24:52,112 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2022-11-16 11:24:52,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:52,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1968073668, now seen corresponding path program 1 times [2022-11-16 11:24:52,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:52,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145656384] [2022-11-16 11:24:52,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:52,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:52,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:24:52,163 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:24:52,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:24:52,183 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:24:52,187 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:24:52,187 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (45 of 46 remaining) [2022-11-16 11:24:52,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (44 of 46 remaining) [2022-11-16 11:24:52,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (43 of 46 remaining) [2022-11-16 11:24:52,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (42 of 46 remaining) [2022-11-16 11:24:52,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (41 of 46 remaining) [2022-11-16 11:24:52,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (40 of 46 remaining) [2022-11-16 11:24:52,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (39 of 46 remaining) [2022-11-16 11:24:52,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (38 of 46 remaining) [2022-11-16 11:24:52,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (37 of 46 remaining) [2022-11-16 11:24:52,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (36 of 46 remaining) [2022-11-16 11:24:52,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (35 of 46 remaining) [2022-11-16 11:24:52,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (34 of 46 remaining) [2022-11-16 11:24:52,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (33 of 46 remaining) [2022-11-16 11:24:52,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (32 of 46 remaining) [2022-11-16 11:24:52,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (31 of 46 remaining) [2022-11-16 11:24:52,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (30 of 46 remaining) [2022-11-16 11:24:52,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 46 remaining) [2022-11-16 11:24:52,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 46 remaining) [2022-11-16 11:24:52,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 46 remaining) [2022-11-16 11:24:52,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 46 remaining) [2022-11-16 11:24:52,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 46 remaining) [2022-11-16 11:24:52,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (24 of 46 remaining) [2022-11-16 11:24:52,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (23 of 46 remaining) [2022-11-16 11:24:52,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (22 of 46 remaining) [2022-11-16 11:24:52,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (21 of 46 remaining) [2022-11-16 11:24:52,197 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (20 of 46 remaining) [2022-11-16 11:24:52,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (19 of 46 remaining) [2022-11-16 11:24:52,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (18 of 46 remaining) [2022-11-16 11:24:52,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (17 of 46 remaining) [2022-11-16 11:24:52,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (16 of 46 remaining) [2022-11-16 11:24:52,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (15 of 46 remaining) [2022-11-16 11:24:52,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 46 remaining) [2022-11-16 11:24:52,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 46 remaining) [2022-11-16 11:24:52,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 46 remaining) [2022-11-16 11:24:52,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 46 remaining) [2022-11-16 11:24:52,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 46 remaining) [2022-11-16 11:24:52,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (9 of 46 remaining) [2022-11-16 11:24:52,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (8 of 46 remaining) [2022-11-16 11:24:52,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (7 of 46 remaining) [2022-11-16 11:24:52,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (6 of 46 remaining) [2022-11-16 11:24:52,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (5 of 46 remaining) [2022-11-16 11:24:52,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (4 of 46 remaining) [2022-11-16 11:24:52,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (3 of 46 remaining) [2022-11-16 11:24:52,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (2 of 46 remaining) [2022-11-16 11:24:52,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (1 of 46 remaining) [2022-11-16 11:24:52,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (0 of 46 remaining) [2022-11-16 11:24:52,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:24:52,208 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-16 11:24:52,209 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:24:52,209 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-16 11:24:52,276 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 11:24:52,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 180 transitions, 381 flow [2022-11-16 11:24:52,328 INFO L130 PetriNetUnfolder]: 10/217 cut-off events. [2022-11-16 11:24:52,329 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-16 11:24:52,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 217 events. 10/217 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 686 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 160. Up to 8 conditions per place. [2022-11-16 11:24:52,332 INFO L82 GeneralOperation]: Start removeDead. Operand has 180 places, 180 transitions, 381 flow [2022-11-16 11:24:52,339 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 180 transitions, 381 flow [2022-11-16 11:24:52,341 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:24:52,341 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;@7f6a9282, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:24:52,342 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2022-11-16 11:24:52,345 INFO L130 PetriNetUnfolder]: 2/38 cut-off events. [2022-11-16 11:24:52,346 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:24:52,346 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:52,346 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] [2022-11-16 11:24:52,346 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2022-11-16 11:24:52,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:52,347 INFO L85 PathProgramCache]: Analyzing trace with hash 394493861, now seen corresponding path program 1 times [2022-11-16 11:24:52,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:52,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040570689] [2022-11-16 11:24:52,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:52,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:52,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:52,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:24:52,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:52,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040570689] [2022-11-16 11:24:52,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040570689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:52,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:52,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:24:52,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403719106] [2022-11-16 11:24:52,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:52,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:24:52,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:52,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:24:52,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:24:52,394 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 180 [2022-11-16 11:24:52,395 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 180 transitions, 381 flow. Second operand has 2 states, 2 states have (on average 113.0) internal successors, (226), 2 states have internal predecessors, (226), 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) [2022-11-16 11:24:52,395 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:52,395 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 180 [2022-11-16 11:24:52,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:52,969 INFO L130 PetriNetUnfolder]: 979/2303 cut-off events. [2022-11-16 11:24:52,969 INFO L131 PetriNetUnfolder]: For 412/412 co-relation queries the response was YES. [2022-11-16 11:24:52,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4129 conditions, 2303 events. 979/2303 cut-off events. For 412/412 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 17621 event pairs, 952 based on Foata normal form. 794/2823 useless extension candidates. Maximal degree in co-relation 3277. Up to 1537 conditions per place. [2022-11-16 11:24:52,998 INFO L137 encePairwiseOnDemand]: 139/180 looper letters, 24 selfloop transitions, 0 changer transitions 0/125 dead transitions. [2022-11-16 11:24:52,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 125 transitions, 319 flow [2022-11-16 11:24:52,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:24:52,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 11:24:53,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 289 transitions. [2022-11-16 11:24:53,000 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8027777777777778 [2022-11-16 11:24:53,000 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 289 transitions. [2022-11-16 11:24:53,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 289 transitions. [2022-11-16 11:24:53,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:53,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 289 transitions. [2022-11-16 11:24:53,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 144.5) internal successors, (289), 2 states have internal predecessors, (289), 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) [2022-11-16 11:24:53,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 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) [2022-11-16 11:24:53,004 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 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) [2022-11-16 11:24:53,004 INFO L175 Difference]: Start difference. First operand has 180 places, 180 transitions, 381 flow. Second operand 2 states and 289 transitions. [2022-11-16 11:24:53,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 125 transitions, 319 flow [2022-11-16 11:24:53,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 125 transitions, 313 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-11-16 11:24:53,007 INFO L231 Difference]: Finished difference. Result has 130 places, 125 transitions, 265 flow [2022-11-16 11:24:53,008 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=265, PETRI_PLACES=130, PETRI_TRANSITIONS=125} [2022-11-16 11:24:53,010 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, -50 predicate places. [2022-11-16 11:24:53,011 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 125 transitions, 265 flow [2022-11-16 11:24:53,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 113.0) internal successors, (226), 2 states have internal predecessors, (226), 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) [2022-11-16 11:24:53,011 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:53,011 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] [2022-11-16 11:24:53,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:24:53,015 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2022-11-16 11:24:53,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:53,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1151504328, now seen corresponding path program 1 times [2022-11-16 11:24:53,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:53,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4076558] [2022-11-16 11:24:53,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:53,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:53,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:53,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:24:53,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:53,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4076558] [2022-11-16 11:24:53,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4076558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:53,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:53,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:24:53,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907508301] [2022-11-16 11:24:53,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:53,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:24:53,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:53,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:24:53,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:24:53,053 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 180 [2022-11-16 11:24:53,054 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 125 transitions, 265 flow. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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) [2022-11-16 11:24:53,054 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:53,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 180 [2022-11-16 11:24:53,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:00,304 INFO L130 PetriNetUnfolder]: 23138/44384 cut-off events. [2022-11-16 11:25:00,304 INFO L131 PetriNetUnfolder]: For 1636/1636 co-relation queries the response was YES. [2022-11-16 11:25:00,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81923 conditions, 44384 events. 23138/44384 cut-off events. For 1636/1636 co-relation queries the response was YES. Maximal size of possible extension queue 1288. Compared 432667 event pairs, 8827 based on Foata normal form. 0/37410 useless extension candidates. Maximal degree in co-relation 81917. Up to 20004 conditions per place. [2022-11-16 11:25:01,005 INFO L137 encePairwiseOnDemand]: 156/180 looper letters, 95 selfloop transitions, 18 changer transitions 0/178 dead transitions. [2022-11-16 11:25:01,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 178 transitions, 607 flow [2022-11-16 11:25:01,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:25:01,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:25:01,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2022-11-16 11:25:01,009 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6425925925925926 [2022-11-16 11:25:01,009 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2022-11-16 11:25:01,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2022-11-16 11:25:01,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:01,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2022-11-16 11:25:01,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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) [2022-11-16 11:25:01,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 180.0) internal successors, (720), 4 states have internal predecessors, (720), 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) [2022-11-16 11:25:01,015 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 180.0) internal successors, (720), 4 states have internal predecessors, (720), 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) [2022-11-16 11:25:01,016 INFO L175 Difference]: Start difference. First operand has 130 places, 125 transitions, 265 flow. Second operand 3 states and 347 transitions. [2022-11-16 11:25:01,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 178 transitions, 607 flow [2022-11-16 11:25:01,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 178 transitions, 607 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:25:01,023 INFO L231 Difference]: Finished difference. Result has 134 places, 143 transitions, 421 flow [2022-11-16 11:25:01,024 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=421, PETRI_PLACES=134, PETRI_TRANSITIONS=143} [2022-11-16 11:25:01,026 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, -46 predicate places. [2022-11-16 11:25:01,026 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 143 transitions, 421 flow [2022-11-16 11:25:01,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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) [2022-11-16 11:25:01,027 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:01,027 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] [2022-11-16 11:25:01,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:25:01,030 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2022-11-16 11:25:01,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:01,031 INFO L85 PathProgramCache]: Analyzing trace with hash -679425909, now seen corresponding path program 1 times [2022-11-16 11:25:01,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:01,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785413196] [2022-11-16 11:25:01,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:01,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:01,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:01,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:01,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:01,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785413196] [2022-11-16 11:25:01,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785413196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:01,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:01,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:25:01,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858895229] [2022-11-16 11:25:01,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:01,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:25:01,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:01,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:25:01,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:25:01,109 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 180 [2022-11-16 11:25:01,110 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 143 transitions, 421 flow. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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) [2022-11-16 11:25:01,110 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:01,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 180 [2022-11-16 11:25:01,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:08,913 INFO L130 PetriNetUnfolder]: 28633/52972 cut-off events. [2022-11-16 11:25:08,913 INFO L131 PetriNetUnfolder]: For 24082/25156 co-relation queries the response was YES. [2022-11-16 11:25:09,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119826 conditions, 52972 events. 28633/52972 cut-off events. For 24082/25156 co-relation queries the response was YES. Maximal size of possible extension queue 1396. Compared 507727 event pairs, 18825 based on Foata normal form. 106/46603 useless extension candidates. Maximal degree in co-relation 119818. Up to 39814 conditions per place. [2022-11-16 11:25:09,453 INFO L137 encePairwiseOnDemand]: 168/180 looper letters, 115 selfloop transitions, 20 changer transitions 0/197 dead transitions. [2022-11-16 11:25:09,454 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 197 transitions, 889 flow [2022-11-16 11:25:09,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:25:09,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:25:09,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 325 transitions. [2022-11-16 11:25:09,456 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6018518518518519 [2022-11-16 11:25:09,456 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 325 transitions. [2022-11-16 11:25:09,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 325 transitions. [2022-11-16 11:25:09,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:09,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 325 transitions. [2022-11-16 11:25:09,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:09,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 180.0) internal successors, (720), 4 states have internal predecessors, (720), 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) [2022-11-16 11:25:09,460 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 180.0) internal successors, (720), 4 states have internal predecessors, (720), 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) [2022-11-16 11:25:09,460 INFO L175 Difference]: Start difference. First operand has 134 places, 143 transitions, 421 flow. Second operand 3 states and 325 transitions. [2022-11-16 11:25:09,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 197 transitions, 889 flow [2022-11-16 11:25:09,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 197 transitions, 829 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:25:09,518 INFO L231 Difference]: Finished difference. Result has 136 places, 161 transitions, 571 flow [2022-11-16 11:25:09,519 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=571, PETRI_PLACES=136, PETRI_TRANSITIONS=161} [2022-11-16 11:25:09,520 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, -44 predicate places. [2022-11-16 11:25:09,521 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 161 transitions, 571 flow [2022-11-16 11:25:09,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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) [2022-11-16 11:25:09,521 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:09,522 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] [2022-11-16 11:25:09,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:25:09,522 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2022-11-16 11:25:09,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:09,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1649156069, now seen corresponding path program 1 times [2022-11-16 11:25:09,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:09,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672381457] [2022-11-16 11:25:09,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:09,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:09,586 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 11:25:09,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:09,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672381457] [2022-11-16 11:25:09,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672381457] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:09,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:09,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:25:09,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369925470] [2022-11-16 11:25:09,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:09,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:25:09,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:09,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:25:09,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:25:09,590 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 180 [2022-11-16 11:25:09,591 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 161 transitions, 571 flow. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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) [2022-11-16 11:25:09,591 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:09,591 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 180 [2022-11-16 11:25:09,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:16,773 INFO L130 PetriNetUnfolder]: 30875/57886 cut-off events. [2022-11-16 11:25:16,773 INFO L131 PetriNetUnfolder]: For 31300/32989 co-relation queries the response was YES. [2022-11-16 11:25:17,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134875 conditions, 57886 events. 30875/57886 cut-off events. For 31300/32989 co-relation queries the response was YES. Maximal size of possible extension queue 1543. Compared 567746 event pairs, 19680 based on Foata normal form. 125/50408 useless extension candidates. Maximal degree in co-relation 134866. Up to 43108 conditions per place. [2022-11-16 11:25:17,768 INFO L137 encePairwiseOnDemand]: 168/180 looper letters, 130 selfloop transitions, 28 changer transitions 0/221 dead transitions. [2022-11-16 11:25:17,769 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 221 transitions, 1136 flow [2022-11-16 11:25:17,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:25:17,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:25:17,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 324 transitions. [2022-11-16 11:25:17,778 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6 [2022-11-16 11:25:17,778 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 324 transitions. [2022-11-16 11:25:17,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 324 transitions. [2022-11-16 11:25:17,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:17,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 324 transitions. [2022-11-16 11:25:17,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 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) [2022-11-16 11:25:17,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 180.0) internal successors, (720), 4 states have internal predecessors, (720), 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) [2022-11-16 11:25:17,790 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 180.0) internal successors, (720), 4 states have internal predecessors, (720), 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) [2022-11-16 11:25:17,790 INFO L175 Difference]: Start difference. First operand has 136 places, 161 transitions, 571 flow. Second operand 3 states and 324 transitions. [2022-11-16 11:25:17,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 221 transitions, 1136 flow [2022-11-16 11:25:17,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 221 transitions, 1078 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:25:17,928 INFO L231 Difference]: Finished difference. Result has 138 places, 185 transitions, 817 flow [2022-11-16 11:25:17,928 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=817, PETRI_PLACES=138, PETRI_TRANSITIONS=185} [2022-11-16 11:25:17,929 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, -42 predicate places. [2022-11-16 11:25:17,929 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 185 transitions, 817 flow [2022-11-16 11:25:17,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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) [2022-11-16 11:25:17,930 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:17,930 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:17,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:25:17,931 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2022-11-16 11:25:17,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:17,932 INFO L85 PathProgramCache]: Analyzing trace with hash 499268161, now seen corresponding path program 1 times [2022-11-16 11:25:17,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:17,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612140620] [2022-11-16 11:25:17,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:17,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:17,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:25:17,949 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:25:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:25:17,966 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:25:17,966 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:25:17,966 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (60 of 61 remaining) [2022-11-16 11:25:17,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (59 of 61 remaining) [2022-11-16 11:25:17,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (58 of 61 remaining) [2022-11-16 11:25:17,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (57 of 61 remaining) [2022-11-16 11:25:17,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (56 of 61 remaining) [2022-11-16 11:25:17,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (55 of 61 remaining) [2022-11-16 11:25:17,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (54 of 61 remaining) [2022-11-16 11:25:17,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (53 of 61 remaining) [2022-11-16 11:25:17,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (52 of 61 remaining) [2022-11-16 11:25:17,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (51 of 61 remaining) [2022-11-16 11:25:17,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (50 of 61 remaining) [2022-11-16 11:25:17,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (49 of 61 remaining) [2022-11-16 11:25:17,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (48 of 61 remaining) [2022-11-16 11:25:17,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (47 of 61 remaining) [2022-11-16 11:25:17,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (46 of 61 remaining) [2022-11-16 11:25:17,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (45 of 61 remaining) [2022-11-16 11:25:17,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (44 of 61 remaining) [2022-11-16 11:25:17,972 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (43 of 61 remaining) [2022-11-16 11:25:17,972 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (42 of 61 remaining) [2022-11-16 11:25:17,972 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (41 of 61 remaining) [2022-11-16 11:25:17,972 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (40 of 61 remaining) [2022-11-16 11:25:17,973 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (39 of 61 remaining) [2022-11-16 11:25:17,973 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (38 of 61 remaining) [2022-11-16 11:25:17,973 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (37 of 61 remaining) [2022-11-16 11:25:17,974 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (36 of 61 remaining) [2022-11-16 11:25:17,974 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (35 of 61 remaining) [2022-11-16 11:25:17,974 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (34 of 61 remaining) [2022-11-16 11:25:17,975 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (33 of 61 remaining) [2022-11-16 11:25:17,975 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (32 of 61 remaining) [2022-11-16 11:25:17,975 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (31 of 61 remaining) [2022-11-16 11:25:17,975 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (30 of 61 remaining) [2022-11-16 11:25:17,976 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 61 remaining) [2022-11-16 11:25:17,976 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 61 remaining) [2022-11-16 11:25:17,976 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 61 remaining) [2022-11-16 11:25:17,977 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 61 remaining) [2022-11-16 11:25:17,977 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 61 remaining) [2022-11-16 11:25:17,977 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (24 of 61 remaining) [2022-11-16 11:25:17,978 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (23 of 61 remaining) [2022-11-16 11:25:17,978 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (22 of 61 remaining) [2022-11-16 11:25:17,978 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (21 of 61 remaining) [2022-11-16 11:25:17,978 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (20 of 61 remaining) [2022-11-16 11:25:17,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (19 of 61 remaining) [2022-11-16 11:25:17,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (18 of 61 remaining) [2022-11-16 11:25:17,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (17 of 61 remaining) [2022-11-16 11:25:17,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (16 of 61 remaining) [2022-11-16 11:25:17,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (15 of 61 remaining) [2022-11-16 11:25:17,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 61 remaining) [2022-11-16 11:25:17,981 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 61 remaining) [2022-11-16 11:25:17,981 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 61 remaining) [2022-11-16 11:25:17,981 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 61 remaining) [2022-11-16 11:25:17,981 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 61 remaining) [2022-11-16 11:25:17,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (9 of 61 remaining) [2022-11-16 11:25:17,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (8 of 61 remaining) [2022-11-16 11:25:17,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (7 of 61 remaining) [2022-11-16 11:25:17,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (6 of 61 remaining) [2022-11-16 11:25:17,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (5 of 61 remaining) [2022-11-16 11:25:17,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (4 of 61 remaining) [2022-11-16 11:25:17,984 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (3 of 61 remaining) [2022-11-16 11:25:17,984 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (2 of 61 remaining) [2022-11-16 11:25:17,984 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (1 of 61 remaining) [2022-11-16 11:25:17,984 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (0 of 61 remaining) [2022-11-16 11:25:17,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:25:17,985 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-16 11:25:17,986 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:25:17,986 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-16 11:25:18,047 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 11:25:18,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 230 places, 230 transitions, 492 flow [2022-11-16 11:25:18,112 INFO L130 PetriNetUnfolder]: 13/280 cut-off events. [2022-11-16 11:25:18,113 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-16 11:25:18,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 280 events. 13/280 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 994 event pairs, 0 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 225. Up to 10 conditions per place. [2022-11-16 11:25:18,118 INFO L82 GeneralOperation]: Start removeDead. Operand has 230 places, 230 transitions, 492 flow [2022-11-16 11:25:18,130 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 230 places, 230 transitions, 492 flow [2022-11-16 11:25:18,131 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:25:18,132 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;@7f6a9282, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:25:18,132 INFO L358 AbstractCegarLoop]: Starting to check reachability of 76 error locations. [2022-11-16 11:25:18,136 INFO L130 PetriNetUnfolder]: 2/38 cut-off events. [2022-11-16 11:25:18,136 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:25:18,137 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:18,137 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:18,137 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 72 more)] === [2022-11-16 11:25:18,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:18,138 INFO L85 PathProgramCache]: Analyzing trace with hash 2110729084, now seen corresponding path program 1 times [2022-11-16 11:25:18,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:18,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746958255] [2022-11-16 11:25:18,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:18,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:18,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:18,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:18,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:18,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746958255] [2022-11-16 11:25:18,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746958255] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:18,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:18,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:25:18,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174634337] [2022-11-16 11:25:18,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:18,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:25:18,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:18,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:25:18,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:25:18,170 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 230 [2022-11-16 11:25:18,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 230 transitions, 492 flow. Second operand has 2 states, 2 states have (on average 141.0) internal successors, (282), 2 states have internal predecessors, (282), 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) [2022-11-16 11:25:18,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:18,171 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 230 [2022-11-16 11:25:18,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:21,260 INFO L130 PetriNetUnfolder]: 11816/19990 cut-off events. [2022-11-16 11:25:21,261 INFO L131 PetriNetUnfolder]: For 5535/5535 co-relation queries the response was YES. [2022-11-16 11:25:21,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39226 conditions, 19990 events. 11816/19990 cut-off events. For 5535/5535 co-relation queries the response was YES. Maximal size of possible extension queue 1200. Compared 176912 event pairs, 11704 based on Foata normal form. 6938/25040 useless extension candidates. Maximal degree in co-relation 31520. Up to 16385 conditions per place. [2022-11-16 11:25:21,511 INFO L137 encePairwiseOnDemand]: 176/230 looper letters, 32 selfloop transitions, 0 changer transitions 0/159 dead transitions. [2022-11-16 11:25:21,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 159 transitions, 414 flow [2022-11-16 11:25:21,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:25:21,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 11:25:21,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 366 transitions. [2022-11-16 11:25:21,514 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7956521739130434 [2022-11-16 11:25:21,514 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 366 transitions. [2022-11-16 11:25:21,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 366 transitions. [2022-11-16 11:25:21,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:21,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 366 transitions. [2022-11-16 11:25:21,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 183.0) internal successors, (366), 2 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) [2022-11-16 11:25:21,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:21,518 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:21,519 INFO L175 Difference]: Start difference. First operand has 230 places, 230 transitions, 492 flow. Second operand 2 states and 366 transitions. [2022-11-16 11:25:21,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 159 transitions, 414 flow [2022-11-16 11:25:21,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 159 transitions, 402 flow, removed 6 selfloop flow, removed 0 redundant places. [2022-11-16 11:25:21,524 INFO L231 Difference]: Finished difference. Result has 165 places, 159 transitions, 338 flow [2022-11-16 11:25:21,525 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=338, PETRI_PLACES=165, PETRI_TRANSITIONS=159} [2022-11-16 11:25:21,526 INFO L288 CegarLoopForPetriNet]: 230 programPoint places, -65 predicate places. [2022-11-16 11:25:21,526 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 159 transitions, 338 flow [2022-11-16 11:25:21,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 141.0) internal successors, (282), 2 states have internal predecessors, (282), 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) [2022-11-16 11:25:21,526 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:21,527 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] [2022-11-16 11:25:21,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:25:21,527 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 72 more)] === [2022-11-16 11:25:21,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:21,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1186120895, now seen corresponding path program 1 times [2022-11-16 11:25:21,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:21,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488977870] [2022-11-16 11:25:21,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:21,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:21,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:21,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:21,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:21,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488977870] [2022-11-16 11:25:21,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488977870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:21,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:21,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:25:21,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061517606] [2022-11-16 11:25:21,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:21,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:25:21,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:21,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:25:21,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:25:21,568 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 230 [2022-11-16 11:25:21,569 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 159 transitions, 338 flow. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 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) [2022-11-16 11:25:21,569 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:21,569 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 230 [2022-11-16 11:25:21,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand