./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a80ac29-961a-43d5-aa9f-91c87c776403/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a80ac29-961a-43d5-aa9f-91c87c776403/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a80ac29-961a-43d5-aa9f-91c87c776403/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a80ac29-961a-43d5-aa9f-91c87c776403/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a80ac29-961a-43d5-aa9f-91c87c776403/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a80ac29-961a-43d5-aa9f-91c87c776403/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9556b3eb7217f056a72a299bf0514e64606a248fa454b59dcc03e4a2e74c7c90 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:39:35,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:39:35,038 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:39:35,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:39:35,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:39:35,086 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:39:35,088 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:39:35,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:39:35,094 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:39:35,097 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:39:35,099 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:39:35,101 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:39:35,101 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:39:35,106 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:39:35,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:39:35,109 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:39:35,111 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:39:35,112 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:39:35,114 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:39:35,118 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:39:35,122 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:39:35,124 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:39:35,126 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:39:35,128 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:39:35,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:39:35,138 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:39:35,138 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:39:35,139 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:39:35,139 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:39:35,141 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:39:35,142 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:39:35,143 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:39:35,145 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:39:35,147 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:39:35,149 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:39:35,149 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:39:35,150 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:39:35,150 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:39:35,150 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:39:35,151 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:39:35,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:39:35,153 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a80ac29-961a-43d5-aa9f-91c87c776403/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-18 20:39:35,190 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:39:35,191 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:39:35,191 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:39:35,192 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:39:35,193 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:39:35,193 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:39:35,194 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:39:35,194 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:39:35,194 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:39:35,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:39:35,196 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:39:35,196 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:39:35,196 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:39:35,197 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:39:35,197 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:39:35,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:39:35,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:39:35,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:39:35,198 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-18 20:39:35,198 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:39:35,198 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:39:35,199 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:39:35,199 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:39:35,199 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:39:35,200 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:39:35,200 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:39:35,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:39:35,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:39:35,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:39:35,201 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:39:35,201 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:39:35,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:39:35,202 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:39:35,202 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:39:35,203 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:39:35,203 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_9a80ac29-961a-43d5-aa9f-91c87c776403/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a80ac29-961a-43d5-aa9f-91c87c776403/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9556b3eb7217f056a72a299bf0514e64606a248fa454b59dcc03e4a2e74c7c90 [2022-11-18 20:39:35,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:39:35,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:39:35,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:39:35,552 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:39:35,555 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:39:35,557 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a80ac29-961a-43d5-aa9f-91c87c776403/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i [2022-11-18 20:39:35,626 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a80ac29-961a-43d5-aa9f-91c87c776403/bin/uautomizer-TMbwUNV5ro/data/fd391766b/c88a299d6a0a4cacbf1606abee683e32/FLAGb470cba0b [2022-11-18 20:39:36,288 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:39:36,288 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a80ac29-961a-43d5-aa9f-91c87c776403/sv-benchmarks/c/pthread/singleton_with-uninit-problems.i [2022-11-18 20:39:36,314 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a80ac29-961a-43d5-aa9f-91c87c776403/bin/uautomizer-TMbwUNV5ro/data/fd391766b/c88a299d6a0a4cacbf1606abee683e32/FLAGb470cba0b [2022-11-18 20:39:36,514 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a80ac29-961a-43d5-aa9f-91c87c776403/bin/uautomizer-TMbwUNV5ro/data/fd391766b/c88a299d6a0a4cacbf1606abee683e32 [2022-11-18 20:39:36,517 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:39:36,520 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:39:36,523 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:39:36,523 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:39:36,527 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:39:36,528 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:39:36" (1/1) ... [2022-11-18 20:39:36,530 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2956b2e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:36, skipping insertion in model container [2022-11-18 20:39:36,530 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:39:36" (1/1) ... [2022-11-18 20:39:36,538 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:39:36,597 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:39:36,903 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-18 20:39:37,171 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a80ac29-961a-43d5-aa9f-91c87c776403/sv-benchmarks/c/pthread/singleton_with-uninit-problems.i[55568,55581] [2022-11-18 20:39:37,211 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:39:37,218 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:39:37,247 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-18 20:39:37,273 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a80ac29-961a-43d5-aa9f-91c87c776403/sv-benchmarks/c/pthread/singleton_with-uninit-problems.i[55568,55581] [2022-11-18 20:39:37,301 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:39:37,380 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:39:37,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:37 WrapperNode [2022-11-18 20:39:37,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:39:37,382 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:39:37,382 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:39:37,382 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:39:37,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:37" (1/1) ... [2022-11-18 20:39:37,426 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:37" (1/1) ... [2022-11-18 20:39:37,468 INFO L138 Inliner]: procedures = 325, calls = 53, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54 [2022-11-18 20:39:37,469 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:39:37,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:39:37,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:39:37,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:39:37,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:37" (1/1) ... [2022-11-18 20:39:37,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:37" (1/1) ... [2022-11-18 20:39:37,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:37" (1/1) ... [2022-11-18 20:39:37,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:37" (1/1) ... [2022-11-18 20:39:37,514 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:37" (1/1) ... [2022-11-18 20:39:37,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:37" (1/1) ... [2022-11-18 20:39:37,531 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:37" (1/1) ... [2022-11-18 20:39:37,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:37" (1/1) ... [2022-11-18 20:39:37,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:39:37,548 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:39:37,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:39:37,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:39:37,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:37" (1/1) ... [2022-11-18 20:39:37,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:39:37,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a80ac29-961a-43d5-aa9f-91c87c776403/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:39:37,583 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a80ac29-961a-43d5-aa9f-91c87c776403/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:39:37,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a80ac29-961a-43d5-aa9f-91c87c776403/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:39:37,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 20:39:37,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:39:37,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:39:37,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 20:39:37,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:39:37,641 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2022-11-18 20:39:37,641 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2022-11-18 20:39:37,641 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:39:37,642 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:39:37,642 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:39:37,642 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:39:37,642 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 20:39:37,642 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 20:39:37,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:39:37,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:39:37,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:39:37,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:39:37,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:39:37,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:39:37,645 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:39:37,800 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:39:37,803 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:39:38,217 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:39:38,256 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:39:38,256 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 20:39:38,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:39:38 BoogieIcfgContainer [2022-11-18 20:39:38,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:39:38,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:39:38,262 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:39:38,265 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:39:38,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:39:36" (1/3) ... [2022-11-18 20:39:38,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f1f1660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:39:38, skipping insertion in model container [2022-11-18 20:39:38,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:37" (2/3) ... [2022-11-18 20:39:38,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f1f1660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:39:38, skipping insertion in model container [2022-11-18 20:39:38,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:39:38" (3/3) ... [2022-11-18 20:39:38,268 INFO L112 eAbstractionObserver]: Analyzing ICFG singleton_with-uninit-problems.i [2022-11-18 20:39:38,277 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:39:38,287 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:39:38,287 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2022-11-18 20:39:38,288 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:39:38,471 INFO L144 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2022-11-18 20:39:38,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 294 places, 285 transitions, 677 flow [2022-11-18 20:39:38,657 INFO L130 PetriNetUnfolder]: 7/198 cut-off events. [2022-11-18 20:39:38,657 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-18 20:39:38,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 198 events. 7/198 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 135 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 165. Up to 3 conditions per place. [2022-11-18 20:39:38,663 INFO L82 GeneralOperation]: Start removeDead. Operand has 294 places, 285 transitions, 677 flow [2022-11-18 20:39:38,676 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 177 transitions, 405 flow [2022-11-18 20:39:38,687 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:39:38,695 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;@281c9c21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:39:38,695 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2022-11-18 20:39:38,704 INFO L130 PetriNetUnfolder]: 0/33 cut-off events. [2022-11-18 20:39:38,704 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:39:38,705 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:39:38,705 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] [2022-11-18 20:39:38,706 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2022-11-18 20:39:38,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:38,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1196575310, now seen corresponding path program 1 times [2022-11-18 20:39:38,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:38,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684166514] [2022-11-18 20:39:38,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:38,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:38,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:39,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:39,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:39,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684166514] [2022-11-18 20:39:39,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684166514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:39:39,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:39:39,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:39:39,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213545098] [2022-11-18 20:39:39,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:39:39,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:39:39,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:39,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:39:39,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:39:39,489 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 287 [2022-11-18 20:39:39,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 177 transitions, 405 flow. Second operand has 6 states, 6 states have (on average 171.66666666666666) internal successors, (1030), 6 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:39,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:39:39,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 287 [2022-11-18 20:39:39,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:39:42,665 INFO L130 PetriNetUnfolder]: 6956/10930 cut-off events. [2022-11-18 20:39:42,665 INFO L131 PetriNetUnfolder]: For 553/580 co-relation queries the response was YES. [2022-11-18 20:39:42,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21601 conditions, 10930 events. 6956/10930 cut-off events. For 553/580 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 66468 event pairs, 3015 based on Foata normal form. 8/10037 useless extension candidates. Maximal degree in co-relation 21521. Up to 7339 conditions per place. [2022-11-18 20:39:42,796 INFO L137 encePairwiseOnDemand]: 269/287 looper letters, 251 selfloop transitions, 21 changer transitions 0/375 dead transitions. [2022-11-18 20:39:42,797 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 375 transitions, 1528 flow [2022-11-18 20:39:42,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:39:42,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:39:42,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1333 transitions. [2022-11-18 20:39:42,817 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7740998838559814 [2022-11-18 20:39:42,818 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1333 transitions. [2022-11-18 20:39:42,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1333 transitions. [2022-11-18 20:39:42,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:39:42,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1333 transitions. [2022-11-18 20:39:42,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 222.16666666666666) internal successors, (1333), 6 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:42,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 287.0) internal successors, (2009), 7 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:42,845 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 287.0) internal successors, (2009), 7 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:42,847 INFO L175 Difference]: Start difference. First operand has 191 places, 177 transitions, 405 flow. Second operand 6 states and 1333 transitions. [2022-11-18 20:39:42,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 375 transitions, 1528 flow [2022-11-18 20:39:42,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 375 transitions, 1372 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-11-18 20:39:42,883 INFO L231 Difference]: Finished difference. Result has 181 places, 189 transitions, 497 flow [2022-11-18 20:39:42,885 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=497, PETRI_PLACES=181, PETRI_TRANSITIONS=189} [2022-11-18 20:39:42,889 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, -10 predicate places. [2022-11-18 20:39:42,889 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 189 transitions, 497 flow [2022-11-18 20:39:42,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 171.66666666666666) internal successors, (1030), 6 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:42,890 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:39:42,890 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:42,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:39:42,891 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2022-11-18 20:39:42,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:42,892 INFO L85 PathProgramCache]: Analyzing trace with hash 947714976, now seen corresponding path program 1 times [2022-11-18 20:39:42,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:42,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130457631] [2022-11-18 20:39:42,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:42,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:42,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:42,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:42,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:42,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130457631] [2022-11-18 20:39:42,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130457631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:39:42,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:39:42,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:39:42,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850898434] [2022-11-18 20:39:42,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:39:42,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:39:42,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:42,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:39:42,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:39:42,952 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 287 [2022-11-18 20:39:42,953 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 189 transitions, 497 flow. Second operand has 3 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:42,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:39:42,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 287 [2022-11-18 20:39:42,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:39:43,397 INFO L130 PetriNetUnfolder]: 777/2173 cut-off events. [2022-11-18 20:39:43,397 INFO L131 PetriNetUnfolder]: For 1115/1300 co-relation queries the response was YES. [2022-11-18 20:39:43,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4673 conditions, 2173 events. 777/2173 cut-off events. For 1115/1300 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 13828 event pairs, 306 based on Foata normal form. 0/1981 useless extension candidates. Maximal degree in co-relation 2975. Up to 947 conditions per place. [2022-11-18 20:39:43,423 INFO L137 encePairwiseOnDemand]: 284/287 looper letters, 45 selfloop transitions, 2 changer transitions 0/188 dead transitions. [2022-11-18 20:39:43,423 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 188 transitions, 589 flow [2022-11-18 20:39:43,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:39:43,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:39:43,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 725 transitions. [2022-11-18 20:39:43,426 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8420441347270615 [2022-11-18 20:39:43,426 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 725 transitions. [2022-11-18 20:39:43,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 725 transitions. [2022-11-18 20:39:43,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:39:43,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 725 transitions. [2022-11-18 20:39:43,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:43,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:43,432 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:43,433 INFO L175 Difference]: Start difference. First operand has 181 places, 189 transitions, 497 flow. Second operand 3 states and 725 transitions. [2022-11-18 20:39:43,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 188 transitions, 589 flow [2022-11-18 20:39:43,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 188 transitions, 589 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:39:43,442 INFO L231 Difference]: Finished difference. Result has 182 places, 188 transitions, 499 flow [2022-11-18 20:39:43,443 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=499, PETRI_PLACES=182, PETRI_TRANSITIONS=188} [2022-11-18 20:39:43,444 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, -9 predicate places. [2022-11-18 20:39:43,444 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 188 transitions, 499 flow [2022-11-18 20:39:43,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:43,445 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:39:43,445 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:43,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:39:43,445 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread0Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2022-11-18 20:39:43,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:43,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1507116799, now seen corresponding path program 1 times [2022-11-18 20:39:43,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:43,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681229187] [2022-11-18 20:39:43,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:43,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:43,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:43,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:43,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:43,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681229187] [2022-11-18 20:39:43,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681229187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:39:43,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:39:43,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:39:43,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63035447] [2022-11-18 20:39:43,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:39:43,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:39:43,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:43,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:39:43,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:39:43,915 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 287 [2022-11-18 20:39:43,917 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 188 transitions, 499 flow. Second operand has 6 states, 6 states have (on average 172.66666666666666) internal successors, (1036), 6 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:43,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:39:43,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 287 [2022-11-18 20:39:43,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:39:46,216 INFO L130 PetriNetUnfolder]: 6392/11315 cut-off events. [2022-11-18 20:39:46,216 INFO L131 PetriNetUnfolder]: For 6232/6268 co-relation queries the response was YES. [2022-11-18 20:39:46,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29992 conditions, 11315 events. 6392/11315 cut-off events. For 6232/6268 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 76571 event pairs, 1683 based on Foata normal form. 24/10733 useless extension candidates. Maximal degree in co-relation 24960. Up to 8953 conditions per place. [2022-11-18 20:39:46,331 INFO L137 encePairwiseOnDemand]: 278/287 looper letters, 111 selfloop transitions, 24 changer transitions 0/236 dead transitions. [2022-11-18 20:39:46,332 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 236 transitions, 1012 flow [2022-11-18 20:39:46,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:39:46,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:39:46,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1126 transitions. [2022-11-18 20:39:46,335 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6538908246225319 [2022-11-18 20:39:46,335 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1126 transitions. [2022-11-18 20:39:46,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1126 transitions. [2022-11-18 20:39:46,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:39:46,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1126 transitions. [2022-11-18 20:39:46,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 187.66666666666666) internal successors, (1126), 6 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:46,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 287.0) internal successors, (2009), 7 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:46,345 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 287.0) internal successors, (2009), 7 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:46,345 INFO L175 Difference]: Start difference. First operand has 182 places, 188 transitions, 499 flow. Second operand 6 states and 1126 transitions. [2022-11-18 20:39:46,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 236 transitions, 1012 flow [2022-11-18 20:39:46,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 236 transitions, 1008 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:39:46,387 INFO L231 Difference]: Finished difference. Result has 185 places, 207 transitions, 714 flow [2022-11-18 20:39:46,387 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=714, PETRI_PLACES=185, PETRI_TRANSITIONS=207} [2022-11-18 20:39:46,390 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, -6 predicate places. [2022-11-18 20:39:46,390 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 207 transitions, 714 flow [2022-11-18 20:39:46,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 172.66666666666666) internal successors, (1036), 6 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:46,391 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:39:46,391 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:46,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:39:46,391 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2022-11-18 20:39:46,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:46,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1431957031, now seen corresponding path program 1 times [2022-11-18 20:39:46,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:46,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585828453] [2022-11-18 20:39:46,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:46,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:46,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:47,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:47,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:47,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585828453] [2022-11-18 20:39:47,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585828453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:39:47,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:39:47,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 20:39:47,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240389872] [2022-11-18 20:39:47,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:39:47,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:39:47,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:47,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:39:47,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:39:47,437 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 287 [2022-11-18 20:39:47,439 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 207 transitions, 714 flow. Second operand has 12 states, 12 states have (on average 144.83333333333334) internal successors, (1738), 12 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:47,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:39:47,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 287 [2022-11-18 20:39:47,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:39:52,194 INFO L130 PetriNetUnfolder]: 9736/16194 cut-off events. [2022-11-18 20:39:52,195 INFO L131 PetriNetUnfolder]: For 21265/21290 co-relation queries the response was YES. [2022-11-18 20:39:52,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51238 conditions, 16194 events. 9736/16194 cut-off events. For 21265/21290 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 105808 event pairs, 3520 based on Foata normal form. 238/15431 useless extension candidates. Maximal degree in co-relation 25681. Up to 7720 conditions per place. [2022-11-18 20:39:52,347 INFO L137 encePairwiseOnDemand]: 269/287 looper letters, 493 selfloop transitions, 92 changer transitions 0/664 dead transitions. [2022-11-18 20:39:52,347 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 664 transitions, 3427 flow [2022-11-18 20:39:52,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:39:52,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 20:39:52,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3079 transitions. [2022-11-18 20:39:52,356 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5960123886953155 [2022-11-18 20:39:52,356 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3079 transitions. [2022-11-18 20:39:52,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3079 transitions. [2022-11-18 20:39:52,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:39:52,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3079 transitions. [2022-11-18 20:39:52,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.05555555555554) internal successors, (3079), 18 states have internal predecessors, (3079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:52,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 287.0) internal successors, (5453), 19 states have internal predecessors, (5453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:52,385 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 287.0) internal successors, (5453), 19 states have internal predecessors, (5453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:52,385 INFO L175 Difference]: Start difference. First operand has 185 places, 207 transitions, 714 flow. Second operand 18 states and 3079 transitions. [2022-11-18 20:39:52,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 664 transitions, 3427 flow [2022-11-18 20:39:52,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 664 transitions, 3276 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:39:52,481 INFO L231 Difference]: Finished difference. Result has 213 places, 278 transitions, 1580 flow [2022-11-18 20:39:52,482 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=687, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1580, PETRI_PLACES=213, PETRI_TRANSITIONS=278} [2022-11-18 20:39:52,483 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 22 predicate places. [2022-11-18 20:39:52,483 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 278 transitions, 1580 flow [2022-11-18 20:39:52,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 144.83333333333334) internal successors, (1738), 12 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:52,484 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:39:52,485 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:52,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:39:52,485 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2022-11-18 20:39:52,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:52,486 INFO L85 PathProgramCache]: Analyzing trace with hash -993946001, now seen corresponding path program 2 times [2022-11-18 20:39:52,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:52,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428998763] [2022-11-18 20:39:52,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:52,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:53,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:53,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:53,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428998763] [2022-11-18 20:39:53,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428998763] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:39:53,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:39:53,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:39:53,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919875344] [2022-11-18 20:39:53,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:39:53,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:39:53,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:53,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:39:53,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:39:53,169 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 287 [2022-11-18 20:39:53,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 278 transitions, 1580 flow. Second operand has 10 states, 10 states have (on average 160.9) internal successors, (1609), 10 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:53,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:39:53,171 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 287 [2022-11-18 20:39:53,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:39:57,949 INFO L130 PetriNetUnfolder]: 11963/20700 cut-off events. [2022-11-18 20:39:57,949 INFO L131 PetriNetUnfolder]: For 51240/51286 co-relation queries the response was YES. [2022-11-18 20:39:58,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72096 conditions, 20700 events. 11963/20700 cut-off events. For 51240/51286 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 144722 event pairs, 4135 based on Foata normal form. 247/19695 useless extension candidates. Maximal degree in co-relation 68846. Up to 7595 conditions per place. [2022-11-18 20:39:58,366 INFO L137 encePairwiseOnDemand]: 277/287 looper letters, 453 selfloop transitions, 45 changer transitions 0/594 dead transitions. [2022-11-18 20:39:58,366 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 594 transitions, 3898 flow [2022-11-18 20:39:58,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:39:58,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 20:39:58,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2877 transitions. [2022-11-18 20:39:58,373 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6265243902439024 [2022-11-18 20:39:58,373 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2877 transitions. [2022-11-18 20:39:58,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2877 transitions. [2022-11-18 20:39:58,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:39:58,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2877 transitions. [2022-11-18 20:39:58,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 179.8125) internal successors, (2877), 16 states have internal predecessors, (2877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:58,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 287.0) internal successors, (4879), 17 states have internal predecessors, (4879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:58,391 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 287.0) internal successors, (4879), 17 states have internal predecessors, (4879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:58,391 INFO L175 Difference]: Start difference. First operand has 213 places, 278 transitions, 1580 flow. Second operand 16 states and 2877 transitions. [2022-11-18 20:39:58,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 594 transitions, 3898 flow [2022-11-18 20:39:58,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 594 transitions, 3878 flow, removed 10 selfloop flow, removed 0 redundant places. [2022-11-18 20:39:58,656 INFO L231 Difference]: Finished difference. Result has 237 places, 310 transitions, 1976 flow [2022-11-18 20:39:58,656 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=1576, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1976, PETRI_PLACES=237, PETRI_TRANSITIONS=310} [2022-11-18 20:39:58,657 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 46 predicate places. [2022-11-18 20:39:58,657 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 310 transitions, 1976 flow [2022-11-18 20:39:58,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 160.9) internal successors, (1609), 10 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:58,658 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:39:58,658 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:58,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:39:58,658 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2022-11-18 20:39:58,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:58,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1294752337, now seen corresponding path program 3 times [2022-11-18 20:39:58,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:58,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962955939] [2022-11-18 20:39:58,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:58,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:58,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:59,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:59,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:59,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962955939] [2022-11-18 20:39:59,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962955939] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:39:59,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:39:59,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 20:39:59,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323346185] [2022-11-18 20:39:59,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:39:59,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:39:59,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:59,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:39:59,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:39:59,509 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 287 [2022-11-18 20:39:59,511 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 310 transitions, 1976 flow. Second operand has 12 states, 12 states have (on average 144.83333333333334) internal successors, (1738), 12 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:59,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:39:59,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 287 [2022-11-18 20:39:59,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:06,372 INFO L130 PetriNetUnfolder]: 13882/23994 cut-off events. [2022-11-18 20:40:06,372 INFO L131 PetriNetUnfolder]: For 87248/87339 co-relation queries the response was YES. [2022-11-18 20:40:06,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91340 conditions, 23994 events. 13882/23994 cut-off events. For 87248/87339 co-relation queries the response was YES. Maximal size of possible extension queue 682. Compared 171718 event pairs, 5122 based on Foata normal form. 273/22790 useless extension candidates. Maximal degree in co-relation 87759. Up to 12873 conditions per place. [2022-11-18 20:40:06,828 INFO L137 encePairwiseOnDemand]: 270/287 looper letters, 504 selfloop transitions, 117 changer transitions 0/700 dead transitions. [2022-11-18 20:40:06,828 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 700 transitions, 4884 flow [2022-11-18 20:40:06,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:40:06,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 20:40:06,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2571 transitions. [2022-11-18 20:40:06,836 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.597212543554007 [2022-11-18 20:40:06,836 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2571 transitions. [2022-11-18 20:40:06,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2571 transitions. [2022-11-18 20:40:06,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:06,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2571 transitions. [2022-11-18 20:40:06,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 171.4) internal successors, (2571), 15 states have internal predecessors, (2571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:06,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 287.0) internal successors, (4592), 16 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:06,853 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 287.0) internal successors, (4592), 16 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:06,854 INFO L175 Difference]: Start difference. First operand has 237 places, 310 transitions, 1976 flow. Second operand 15 states and 2571 transitions. [2022-11-18 20:40:06,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 700 transitions, 4884 flow [2022-11-18 20:40:07,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 700 transitions, 4787 flow, removed 38 selfloop flow, removed 2 redundant places. [2022-11-18 20:40:07,360 INFO L231 Difference]: Finished difference. Result has 261 places, 367 transitions, 3024 flow [2022-11-18 20:40:07,360 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=1930, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3024, PETRI_PLACES=261, PETRI_TRANSITIONS=367} [2022-11-18 20:40:07,361 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 70 predicate places. [2022-11-18 20:40:07,361 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 367 transitions, 3024 flow [2022-11-18 20:40:07,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 144.83333333333334) internal successors, (1738), 12 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:07,362 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:07,362 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:07,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:40:07,363 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2022-11-18 20:40:07,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:07,363 INFO L85 PathProgramCache]: Analyzing trace with hash 18769545, now seen corresponding path program 4 times [2022-11-18 20:40:07,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:07,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795103506] [2022-11-18 20:40:07,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:07,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:07,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:07,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:07,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:07,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795103506] [2022-11-18 20:40:07,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795103506] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:07,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:07,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:40:07,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029361325] [2022-11-18 20:40:07,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:07,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:40:07,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:07,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:40:07,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:40:07,990 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 287 [2022-11-18 20:40:07,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 367 transitions, 3024 flow. Second operand has 10 states, 10 states have (on average 160.9) internal successors, (1609), 10 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:07,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:07,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 287 [2022-11-18 20:40:07,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:16,736 INFO L130 PetriNetUnfolder]: 19927/34727 cut-off events. [2022-11-18 20:40:16,737 INFO L131 PetriNetUnfolder]: For 192180/192303 co-relation queries the response was YES. [2022-11-18 20:40:16,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140286 conditions, 34727 events. 19927/34727 cut-off events. For 192180/192303 co-relation queries the response was YES. Maximal size of possible extension queue 1093. Compared 268597 event pairs, 9357 based on Foata normal form. 293/32742 useless extension candidates. Maximal degree in co-relation 139623. Up to 16103 conditions per place. [2022-11-18 20:40:17,187 INFO L137 encePairwiseOnDemand]: 273/287 looper letters, 542 selfloop transitions, 108 changer transitions 0/757 dead transitions. [2022-11-18 20:40:17,187 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 757 transitions, 6515 flow [2022-11-18 20:40:17,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:40:17,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 20:40:17,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2774 transitions. [2022-11-18 20:40:17,196 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6443670150987224 [2022-11-18 20:40:17,196 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2774 transitions. [2022-11-18 20:40:17,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2774 transitions. [2022-11-18 20:40:17,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:17,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2774 transitions. [2022-11-18 20:40:17,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 184.93333333333334) internal successors, (2774), 15 states have internal predecessors, (2774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:17,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 287.0) internal successors, (4592), 16 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:17,216 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 287.0) internal successors, (4592), 16 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:17,216 INFO L175 Difference]: Start difference. First operand has 261 places, 367 transitions, 3024 flow. Second operand 15 states and 2774 transitions. [2022-11-18 20:40:17,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 757 transitions, 6515 flow [2022-11-18 20:40:18,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 757 transitions, 6314 flow, removed 35 selfloop flow, removed 2 redundant places. [2022-11-18 20:40:18,055 INFO L231 Difference]: Finished difference. Result has 283 places, 419 transitions, 3998 flow [2022-11-18 20:40:18,056 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=2916, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3998, PETRI_PLACES=283, PETRI_TRANSITIONS=419} [2022-11-18 20:40:18,056 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 92 predicate places. [2022-11-18 20:40:18,056 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 419 transitions, 3998 flow [2022-11-18 20:40:18,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 160.9) internal successors, (1609), 10 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:18,058 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:18,058 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:18,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:40:18,058 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2022-11-18 20:40:18,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:18,059 INFO L85 PathProgramCache]: Analyzing trace with hash -44735823, now seen corresponding path program 5 times [2022-11-18 20:40:18,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:18,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179259072] [2022-11-18 20:40:18,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:18,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:18,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:18,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:18,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179259072] [2022-11-18 20:40:18,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179259072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:18,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:18,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 20:40:18,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711653980] [2022-11-18 20:40:18,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:18,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:40:18,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:18,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:40:18,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:40:18,764 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 287 [2022-11-18 20:40:18,766 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 419 transitions, 3998 flow. Second operand has 12 states, 12 states have (on average 144.83333333333334) internal successors, (1738), 12 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:18,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:18,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 287 [2022-11-18 20:40:18,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:30,378 INFO L130 PetriNetUnfolder]: 25833/45016 cut-off events. [2022-11-18 20:40:30,379 INFO L131 PetriNetUnfolder]: For 254072/254333 co-relation queries the response was YES. [2022-11-18 20:40:30,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186280 conditions, 45016 events. 25833/45016 cut-off events. For 254072/254333 co-relation queries the response was YES. Maximal size of possible extension queue 1406. Compared 364089 event pairs, 10723 based on Foata normal form. 388/42540 useless extension candidates. Maximal degree in co-relation 184546. Up to 20119 conditions per place. [2022-11-18 20:40:30,993 INFO L137 encePairwiseOnDemand]: 270/287 looper letters, 637 selfloop transitions, 184 changer transitions 0/900 dead transitions. [2022-11-18 20:40:30,993 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 900 transitions, 8206 flow [2022-11-18 20:40:30,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 20:40:30,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-18 20:40:31,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3355 transitions. [2022-11-18 20:40:31,002 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5844947735191638 [2022-11-18 20:40:31,002 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3355 transitions. [2022-11-18 20:40:31,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3355 transitions. [2022-11-18 20:40:31,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:31,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3355 transitions. [2022-11-18 20:40:31,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 167.75) internal successors, (3355), 20 states have internal predecessors, (3355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:31,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 287.0) internal successors, (6027), 21 states have internal predecessors, (6027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:31,288 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 287.0) internal successors, (6027), 21 states have internal predecessors, (6027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:31,288 INFO L175 Difference]: Start difference. First operand has 283 places, 419 transitions, 3998 flow. Second operand 20 states and 3355 transitions. [2022-11-18 20:40:31,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 900 transitions, 8206 flow [2022-11-18 20:40:33,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 900 transitions, 8139 flow, removed 33 selfloop flow, removed 1 redundant places. [2022-11-18 20:40:33,106 INFO L231 Difference]: Finished difference. Result has 317 places, 489 transitions, 5653 flow [2022-11-18 20:40:33,107 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=3943, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=5653, PETRI_PLACES=317, PETRI_TRANSITIONS=489} [2022-11-18 20:40:33,107 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 126 predicate places. [2022-11-18 20:40:33,108 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 489 transitions, 5653 flow [2022-11-18 20:40:33,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 144.83333333333334) internal successors, (1738), 12 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:33,108 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:33,114 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:33,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:40:33,115 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2022-11-18 20:40:33,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:33,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1824284082, now seen corresponding path program 1 times [2022-11-18 20:40:33,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:33,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355072677] [2022-11-18 20:40:33,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:33,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:33,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:33,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:33,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:33,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355072677] [2022-11-18 20:40:33,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355072677] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:33,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:33,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:40:33,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146907872] [2022-11-18 20:40:33,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:33,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:40:33,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:33,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:40:33,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:40:33,601 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 287 [2022-11-18 20:40:33,603 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 489 transitions, 5653 flow. Second operand has 10 states, 10 states have (on average 160.9) internal successors, (1609), 10 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:33,603 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:33,603 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 287 [2022-11-18 20:40:33,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand