./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/27_Boop_simple_vf.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_e4870f1c-1287-4473-8bc5-70cc24436545/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4870f1c-1287-4473-8bc5-70cc24436545/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_e4870f1c-1287-4473-8bc5-70cc24436545/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4870f1c-1287-4473-8bc5-70cc24436545/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/27_Boop_simple_vf.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4870f1c-1287-4473-8bc5-70cc24436545/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_e4870f1c-1287-4473-8bc5-70cc24436545/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 ce64fcfa63b9df647c320ea90e20b624e2dad5b9ca256083b6d2f56c3177560a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 18:27:58,001 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:27:58,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:27:58,021 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:27:58,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:27:58,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:27:58,024 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:27:58,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:27:58,028 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:27:58,029 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:27:58,030 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:27:58,031 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:27:58,032 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:27:58,033 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:27:58,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:27:58,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:27:58,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:27:58,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:27:58,039 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:27:58,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:27:58,042 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:27:58,044 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:27:58,045 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:27:58,046 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:27:58,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:27:58,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:27:58,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:27:58,051 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:27:58,052 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:27:58,053 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:27:58,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:27:58,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:27:58,055 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:27:58,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:27:58,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:27:58,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:27:58,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:27:58,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:27:58,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:27:58,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:27:58,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:27:58,061 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4870f1c-1287-4473-8bc5-70cc24436545/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-18 18:27:58,083 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:27:58,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:27:58,084 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:27:58,084 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:27:58,085 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:27:58,085 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:27:58,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:27:58,087 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:27:58,087 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:27:58,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:27:58,088 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:27:58,088 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:27:58,088 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:27:58,088 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:27:58,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:27:58,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:27:58,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:27:58,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:27:58,090 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-18 18:27:58,090 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:27:58,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:27:58,090 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:27:58,091 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:27:58,091 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:27:58,091 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:27:58,091 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:27:58,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:27:58,092 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:27:58,092 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:27:58,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:27:58,093 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:27:58,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:27:58,093 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:27:58,094 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:27:58,094 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:27:58,094 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_e4870f1c-1287-4473-8bc5-70cc24436545/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4870f1c-1287-4473-8bc5-70cc24436545/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce64fcfa63b9df647c320ea90e20b624e2dad5b9ca256083b6d2f56c3177560a [2022-11-18 18:27:58,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:27:58,391 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:27:58,394 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:27:58,395 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:27:58,396 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:27:58,397 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4870f1c-1287-4473-8bc5-70cc24436545/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread-ext/27_Boop_simple_vf.i [2022-11-18 18:27:58,475 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4870f1c-1287-4473-8bc5-70cc24436545/bin/uautomizer-TMbwUNV5ro/data/e04f4477c/6c3688ded4454effae6df55eb37f7494/FLAG349bae013 [2022-11-18 18:27:59,116 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:27:59,117 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4870f1c-1287-4473-8bc5-70cc24436545/sv-benchmarks/c/pthread-ext/27_Boop_simple_vf.i [2022-11-18 18:27:59,128 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4870f1c-1287-4473-8bc5-70cc24436545/bin/uautomizer-TMbwUNV5ro/data/e04f4477c/6c3688ded4454effae6df55eb37f7494/FLAG349bae013 [2022-11-18 18:27:59,439 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4870f1c-1287-4473-8bc5-70cc24436545/bin/uautomizer-TMbwUNV5ro/data/e04f4477c/6c3688ded4454effae6df55eb37f7494 [2022-11-18 18:27:59,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:27:59,447 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:27:59,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:27:59,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:27:59,453 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:27:59,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:27:59" (1/1) ... [2022-11-18 18:27:59,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b82d1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:27:59, skipping insertion in model container [2022-11-18 18:27:59,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:27:59" (1/1) ... [2022-11-18 18:27:59,467 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:27:59,538 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:28:00,048 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_e4870f1c-1287-4473-8bc5-70cc24436545/sv-benchmarks/c/pthread-ext/27_Boop_simple_vf.i[30297,30310] [2022-11-18 18:28:00,061 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:28:00,071 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:28:00,120 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_e4870f1c-1287-4473-8bc5-70cc24436545/sv-benchmarks/c/pthread-ext/27_Boop_simple_vf.i[30297,30310] [2022-11-18 18:28:00,133 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:28:00,179 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:28:00,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:00 WrapperNode [2022-11-18 18:28:00,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:28:00,183 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:28:00,184 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:28:00,184 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:28:00,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:00" (1/1) ... [2022-11-18 18:28:00,215 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:00" (1/1) ... [2022-11-18 18:28:00,254 INFO L138 Inliner]: procedures = 170, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 108 [2022-11-18 18:28:00,254 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:28:00,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:28:00,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:28:00,255 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:28:00,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:00" (1/1) ... [2022-11-18 18:28:00,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:00" (1/1) ... [2022-11-18 18:28:00,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:00" (1/1) ... [2022-11-18 18:28:00,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:00" (1/1) ... [2022-11-18 18:28:00,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:00" (1/1) ... [2022-11-18 18:28:00,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:00" (1/1) ... [2022-11-18 18:28:00,297 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:00" (1/1) ... [2022-11-18 18:28:00,299 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:00" (1/1) ... [2022-11-18 18:28:00,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:28:00,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:28:00,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:28:00,322 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:28:00,323 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:00" (1/1) ... [2022-11-18 18:28:00,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:28:00,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4870f1c-1287-4473-8bc5-70cc24436545/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:28:00,357 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4870f1c-1287-4473-8bc5-70cc24436545/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:28:00,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4870f1c-1287-4473-8bc5-70cc24436545/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:28:00,419 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-11-18 18:28:00,419 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-11-18 18:28:00,419 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-18 18:28:00,419 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-18 18:28:00,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:28:00,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:28:00,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:28:00,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:28:00,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:28:00,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:28:00,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:28:00,423 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 18:28:00,604 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:28:00,606 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:28:00,956 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:28:00,964 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:28:00,965 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-18 18:28:00,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:28:00 BoogieIcfgContainer [2022-11-18 18:28:00,967 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:28:00,974 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:28:00,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:28:00,979 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:28:00,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:27:59" (1/3) ... [2022-11-18 18:28:00,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59b29b9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:28:00, skipping insertion in model container [2022-11-18 18:28:00,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:00" (2/3) ... [2022-11-18 18:28:00,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59b29b9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:28:00, skipping insertion in model container [2022-11-18 18:28:00,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:28:00" (3/3) ... [2022-11-18 18:28:00,983 INFO L112 eAbstractionObserver]: Analyzing ICFG 27_Boop_simple_vf.i [2022-11-18 18:28:00,993 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:28:01,004 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:28:01,004 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2022-11-18 18:28:01,005 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:28:01,125 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 18:28:01,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 163 transitions, 336 flow [2022-11-18 18:28:01,282 INFO L130 PetriNetUnfolder]: 13/173 cut-off events. [2022-11-18 18:28:01,282 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:28:01,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 173 events. 13/173 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 362 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 154. Up to 4 conditions per place. [2022-11-18 18:28:01,294 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 163 transitions, 336 flow [2022-11-18 18:28:01,310 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 156 places, 162 transitions, 332 flow [2022-11-18 18:28:01,339 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:28:01,351 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;@769b6277, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:28:01,351 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2022-11-18 18:28:01,383 INFO L130 PetriNetUnfolder]: 1/39 cut-off events. [2022-11-18 18:28:01,384 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:28:01,384 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:28:01,385 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] [2022-11-18 18:28:01,386 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-11-18 18:28:01,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:01,394 INFO L85 PathProgramCache]: Analyzing trace with hash -2004319028, now seen corresponding path program 1 times [2022-11-18 18:28:01,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:01,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516703733] [2022-11-18 18:28:01,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:01,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:01,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:28:01,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:28:01,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:28:01,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516703733] [2022-11-18 18:28:01,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516703733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:28:01,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:28:01,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:28:01,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187667780] [2022-11-18 18:28:01,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:28:01,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:28:01,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:28:01,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:28:01,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:28:01,744 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 163 [2022-11-18 18:28:01,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 162 transitions, 332 flow. Second operand has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:01,748 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:28:01,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 163 [2022-11-18 18:28:01,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:28:02,061 INFO L130 PetriNetUnfolder]: 180/907 cut-off events. [2022-11-18 18:28:02,061 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-11-18 18:28:02,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1290 conditions, 907 events. 180/907 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5446 event pairs, 123 based on Foata normal form. 217/933 useless extension candidates. Maximal degree in co-relation 1261. Up to 305 conditions per place. [2022-11-18 18:28:02,073 INFO L137 encePairwiseOnDemand]: 149/163 looper letters, 32 selfloop transitions, 5 changer transitions 0/157 dead transitions. [2022-11-18 18:28:02,073 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 157 transitions, 399 flow [2022-11-18 18:28:02,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:28:02,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:28:02,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 427 transitions. [2022-11-18 18:28:02,088 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8732106339468303 [2022-11-18 18:28:02,088 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 427 transitions. [2022-11-18 18:28:02,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 427 transitions. [2022-11-18 18:28:02,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:28:02,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 427 transitions. [2022-11-18 18:28:02,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:02,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:02,104 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:02,105 INFO L175 Difference]: Start difference. First operand has 156 places, 162 transitions, 332 flow. Second operand 3 states and 427 transitions. [2022-11-18 18:28:02,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 157 transitions, 399 flow [2022-11-18 18:28:02,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 157 transitions, 398 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:28:02,114 INFO L231 Difference]: Finished difference. Result has 152 places, 152 transitions, 341 flow [2022-11-18 18:28:02,116 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=341, PETRI_PLACES=152, PETRI_TRANSITIONS=152} [2022-11-18 18:28:02,120 INFO L288 CegarLoopForPetriNet]: 156 programPoint places, -4 predicate places. [2022-11-18 18:28:02,120 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 152 transitions, 341 flow [2022-11-18 18:28:02,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:02,121 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:28:02,121 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:28:02,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:28:02,121 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-11-18 18:28:02,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:02,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1255372414, now seen corresponding path program 1 times [2022-11-18 18:28:02,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:02,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640406247] [2022-11-18 18:28:02,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:02,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:02,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:28:02,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:28:02,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:28:02,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640406247] [2022-11-18 18:28:02,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640406247] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:28:02,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:28:02,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:28:02,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487220301] [2022-11-18 18:28:02,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:28:02,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:28:02,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:28:02,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:28:02,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:28:02,228 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 163 [2022-11-18 18:28:02,229 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 152 transitions, 341 flow. Second operand has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:02,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:28:02,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 163 [2022-11-18 18:28:02,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:28:02,360 INFO L130 PetriNetUnfolder]: 52/690 cut-off events. [2022-11-18 18:28:02,360 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-11-18 18:28:02,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 801 conditions, 690 events. 52/690 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4065 event pairs, 7 based on Foata normal form. 0/558 useless extension candidates. Maximal degree in co-relation 771. Up to 29 conditions per place. [2022-11-18 18:28:02,369 INFO L137 encePairwiseOnDemand]: 159/163 looper letters, 10 selfloop transitions, 3 changer transitions 0/157 dead transitions. [2022-11-18 18:28:02,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 157 transitions, 377 flow [2022-11-18 18:28:02,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:28:02,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:28:02,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 452 transitions. [2022-11-18 18:28:02,377 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9243353783231084 [2022-11-18 18:28:02,377 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 452 transitions. [2022-11-18 18:28:02,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 452 transitions. [2022-11-18 18:28:02,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:28:02,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 452 transitions. [2022-11-18 18:28:02,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:02,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:02,384 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:02,384 INFO L175 Difference]: Start difference. First operand has 152 places, 152 transitions, 341 flow. Second operand 3 states and 452 transitions. [2022-11-18 18:28:02,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 157 transitions, 377 flow [2022-11-18 18:28:02,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 157 transitions, 367 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 18:28:02,393 INFO L231 Difference]: Finished difference. Result has 154 places, 155 transitions, 357 flow [2022-11-18 18:28:02,393 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=357, PETRI_PLACES=154, PETRI_TRANSITIONS=155} [2022-11-18 18:28:02,394 INFO L288 CegarLoopForPetriNet]: 156 programPoint places, -2 predicate places. [2022-11-18 18:28:02,394 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 155 transitions, 357 flow [2022-11-18 18:28:02,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:02,395 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:28:02,396 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 18:28:02,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:28:02,397 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-11-18 18:28:02,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:02,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1107093435, now seen corresponding path program 1 times [2022-11-18 18:28:02,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:02,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002945650] [2022-11-18 18:28:02,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:02,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:02,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:28:02,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:28:02,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:28:02,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002945650] [2022-11-18 18:28:02,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002945650] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:28:02,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:28:02,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:28:02,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158794662] [2022-11-18 18:28:02,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:28:02,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:28:02,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:28:02,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:28:02,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:28:02,520 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 163 [2022-11-18 18:28:02,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 155 transitions, 357 flow. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:02,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:28:02,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 163 [2022-11-18 18:28:02,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:28:02,879 INFO L130 PetriNetUnfolder]: 202/1563 cut-off events. [2022-11-18 18:28:02,880 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-18 18:28:02,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1988 conditions, 1563 events. 202/1563 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 11865 event pairs, 99 based on Foata normal form. 0/1233 useless extension candidates. Maximal degree in co-relation 1957. Up to 302 conditions per place. [2022-11-18 18:28:02,897 INFO L137 encePairwiseOnDemand]: 157/163 looper letters, 23 selfloop transitions, 5 changer transitions 0/164 dead transitions. [2022-11-18 18:28:02,897 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 164 transitions, 434 flow [2022-11-18 18:28:02,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:28:02,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:28:02,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 434 transitions. [2022-11-18 18:28:02,899 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8875255623721882 [2022-11-18 18:28:02,899 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 434 transitions. [2022-11-18 18:28:02,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 434 transitions. [2022-11-18 18:28:02,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:28:02,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 434 transitions. [2022-11-18 18:28:02,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:02,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:02,903 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:02,903 INFO L175 Difference]: Start difference. First operand has 154 places, 155 transitions, 357 flow. Second operand 3 states and 434 transitions. [2022-11-18 18:28:02,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 164 transitions, 434 flow [2022-11-18 18:28:02,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 164 transitions, 428 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 18:28:02,911 INFO L231 Difference]: Finished difference. Result has 156 places, 159 transitions, 389 flow [2022-11-18 18:28:02,912 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=389, PETRI_PLACES=156, PETRI_TRANSITIONS=159} [2022-11-18 18:28:02,914 INFO L288 CegarLoopForPetriNet]: 156 programPoint places, 0 predicate places. [2022-11-18 18:28:02,914 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 159 transitions, 389 flow [2022-11-18 18:28:02,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:02,917 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:28:02,917 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] [2022-11-18 18:28:02,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:28:02,918 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr2Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-11-18 18:28:02,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:02,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1775215162, now seen corresponding path program 1 times [2022-11-18 18:28:02,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:02,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846996330] [2022-11-18 18:28:02,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:02,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:02,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:28:03,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:28:03,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:28:03,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846996330] [2022-11-18 18:28:03,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846996330] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:28:03,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:28:03,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:28:03,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17273101] [2022-11-18 18:28:03,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:28:03,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:28:03,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:28:03,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:28:03,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:28:03,040 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 163 [2022-11-18 18:28:03,041 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 159 transitions, 389 flow. Second operand has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:03,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:28:03,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 163 [2022-11-18 18:28:03,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:28:03,198 INFO L130 PetriNetUnfolder]: 31/585 cut-off events. [2022-11-18 18:28:03,198 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 18:28:03,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 651 conditions, 585 events. 31/585 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3338 event pairs, 0 based on Foata normal form. 0/475 useless extension candidates. Maximal degree in co-relation 618. Up to 14 conditions per place. [2022-11-18 18:28:03,204 INFO L137 encePairwiseOnDemand]: 159/163 looper letters, 5 selfloop transitions, 3 changer transitions 0/151 dead transitions. [2022-11-18 18:28:03,204 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 151 transitions, 366 flow [2022-11-18 18:28:03,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:28:03,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:28:03,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 453 transitions. [2022-11-18 18:28:03,206 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9263803680981595 [2022-11-18 18:28:03,206 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 453 transitions. [2022-11-18 18:28:03,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 453 transitions. [2022-11-18 18:28:03,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:28:03,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 453 transitions. [2022-11-18 18:28:03,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:03,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:03,214 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:03,214 INFO L175 Difference]: Start difference. First operand has 156 places, 159 transitions, 389 flow. Second operand 3 states and 453 transitions. [2022-11-18 18:28:03,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 151 transitions, 366 flow [2022-11-18 18:28:03,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 151 transitions, 342 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-11-18 18:28:03,219 INFO L231 Difference]: Finished difference. Result has 152 places, 150 transitions, 337 flow [2022-11-18 18:28:03,220 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=337, PETRI_PLACES=152, PETRI_TRANSITIONS=150} [2022-11-18 18:28:03,223 INFO L288 CegarLoopForPetriNet]: 156 programPoint places, -4 predicate places. [2022-11-18 18:28:03,224 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 150 transitions, 337 flow [2022-11-18 18:28:03,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:03,230 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:28:03,230 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:28:03,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 18:28:03,231 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-11-18 18:28:03,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:03,232 INFO L85 PathProgramCache]: Analyzing trace with hash -371488796, now seen corresponding path program 1 times [2022-11-18 18:28:03,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:03,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453394997] [2022-11-18 18:28:03,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:03,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:28:03,279 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:28:03,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:28:03,324 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:28:03,324 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 18:28:03,325 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 36 remaining) [2022-11-18 18:28:03,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (34 of 36 remaining) [2022-11-18 18:28:03,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (33 of 36 remaining) [2022-11-18 18:28:03,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (32 of 36 remaining) [2022-11-18 18:28:03,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (31 of 36 remaining) [2022-11-18 18:28:03,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (30 of 36 remaining) [2022-11-18 18:28:03,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (29 of 36 remaining) [2022-11-18 18:28:03,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (28 of 36 remaining) [2022-11-18 18:28:03,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (27 of 36 remaining) [2022-11-18 18:28:03,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (26 of 36 remaining) [2022-11-18 18:28:03,330 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (25 of 36 remaining) [2022-11-18 18:28:03,330 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (24 of 36 remaining) [2022-11-18 18:28:03,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (23 of 36 remaining) [2022-11-18 18:28:03,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (22 of 36 remaining) [2022-11-18 18:28:03,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (21 of 36 remaining) [2022-11-18 18:28:03,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (20 of 36 remaining) [2022-11-18 18:28:03,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (19 of 36 remaining) [2022-11-18 18:28:03,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (18 of 36 remaining) [2022-11-18 18:28:03,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 36 remaining) [2022-11-18 18:28:03,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (16 of 36 remaining) [2022-11-18 18:28:03,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (15 of 36 remaining) [2022-11-18 18:28:03,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (14 of 36 remaining) [2022-11-18 18:28:03,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (13 of 36 remaining) [2022-11-18 18:28:03,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (12 of 36 remaining) [2022-11-18 18:28:03,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (11 of 36 remaining) [2022-11-18 18:28:03,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 36 remaining) [2022-11-18 18:28:03,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 36 remaining) [2022-11-18 18:28:03,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (8 of 36 remaining) [2022-11-18 18:28:03,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 36 remaining) [2022-11-18 18:28:03,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (6 of 36 remaining) [2022-11-18 18:28:03,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 36 remaining) [2022-11-18 18:28:03,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (4 of 36 remaining) [2022-11-18 18:28:03,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (3 of 36 remaining) [2022-11-18 18:28:03,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (2 of 36 remaining) [2022-11-18 18:28:03,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (1 of 36 remaining) [2022-11-18 18:28:03,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (0 of 36 remaining) [2022-11-18 18:28:03,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:28:03,341 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-18 18:28:03,345 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 18:28:03,345 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 18:28:03,414 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 18:28:03,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 275 places, 288 transitions, 600 flow [2022-11-18 18:28:03,464 INFO L130 PetriNetUnfolder]: 17/223 cut-off events. [2022-11-18 18:28:03,464 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 18:28:03,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 223 events. 17/223 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 649 event pairs, 0 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 232. Up to 6 conditions per place. [2022-11-18 18:28:03,467 INFO L82 GeneralOperation]: Start removeDead. Operand has 275 places, 288 transitions, 600 flow [2022-11-18 18:28:03,472 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 192 places, 199 transitions, 413 flow [2022-11-18 18:28:03,483 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:28:03,484 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;@769b6277, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:28:03,484 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2022-11-18 18:28:03,488 INFO L130 PetriNetUnfolder]: 1/40 cut-off events. [2022-11-18 18:28:03,488 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:28:03,488 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:28:03,488 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] [2022-11-18 18:28:03,489 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-11-18 18:28:03,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:03,489 INFO L85 PathProgramCache]: Analyzing trace with hash -162181996, now seen corresponding path program 1 times [2022-11-18 18:28:03,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:03,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453828847] [2022-11-18 18:28:03,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:03,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:03,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:28:03,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:28:03,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:28:03,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453828847] [2022-11-18 18:28:03,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453828847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:28:03,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:28:03,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:28:03,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289118130] [2022-11-18 18:28:03,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:28:03,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:28:03,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:28:03,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:28:03,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:28:03,565 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 288 [2022-11-18 18:28:03,566 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 199 transitions, 413 flow. Second operand has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:03,567 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:28:03,567 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 288 [2022-11-18 18:28:03,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:28:04,938 INFO L130 PetriNetUnfolder]: 2433/7729 cut-off events. [2022-11-18 18:28:04,938 INFO L131 PetriNetUnfolder]: For 496/496 co-relation queries the response was YES. [2022-11-18 18:28:05,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11841 conditions, 7729 events. 2433/7729 cut-off events. For 496/496 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 74492 event pairs, 1870 based on Foata normal form. 1778/7685 useless extension candidates. Maximal degree in co-relation 11811. Up to 3286 conditions per place. [2022-11-18 18:28:05,074 INFO L137 encePairwiseOnDemand]: 271/288 looper letters, 44 selfloop transitions, 7 changer transitions 0/200 dead transitions. [2022-11-18 18:28:05,074 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 200 transitions, 525 flow [2022-11-18 18:28:05,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:28:05,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:28:05,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 719 transitions. [2022-11-18 18:28:05,077 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8321759259259259 [2022-11-18 18:28:05,077 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 719 transitions. [2022-11-18 18:28:05,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 719 transitions. [2022-11-18 18:28:05,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:28:05,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 719 transitions. [2022-11-18 18:28:05,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:05,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:05,083 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:05,084 INFO L175 Difference]: Start difference. First operand has 192 places, 199 transitions, 413 flow. Second operand 3 states and 719 transitions. [2022-11-18 18:28:05,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 200 transitions, 525 flow [2022-11-18 18:28:05,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 200 transitions, 522 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-18 18:28:05,088 INFO L231 Difference]: Finished difference. Result has 188 places, 190 transitions, 434 flow [2022-11-18 18:28:05,089 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=434, PETRI_PLACES=188, PETRI_TRANSITIONS=190} [2022-11-18 18:28:05,090 INFO L288 CegarLoopForPetriNet]: 192 programPoint places, -4 predicate places. [2022-11-18 18:28:05,090 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 190 transitions, 434 flow [2022-11-18 18:28:05,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:05,091 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:28:05,091 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:28:05,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 18:28:05,091 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-11-18 18:28:05,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:05,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1427947843, now seen corresponding path program 1 times [2022-11-18 18:28:05,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:05,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115789276] [2022-11-18 18:28:05,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:05,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:05,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:28:05,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:28:05,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:28:05,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115789276] [2022-11-18 18:28:05,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115789276] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:28:05,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:28:05,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:28:05,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794013450] [2022-11-18 18:28:05,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:28:05,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:28:05,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:28:05,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:28:05,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:28:05,128 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 288 [2022-11-18 18:28:05,129 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 190 transitions, 434 flow. Second operand has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:05,129 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:28:05,129 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 288 [2022-11-18 18:28:05,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:28:05,747 INFO L130 PetriNetUnfolder]: 491/4018 cut-off events. [2022-11-18 18:28:05,748 INFO L131 PetriNetUnfolder]: For 130/130 co-relation queries the response was YES. [2022-11-18 18:28:05,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4919 conditions, 4018 events. 491/4018 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 42015 event pairs, 96 based on Foata normal form. 0/3199 useless extension candidates. Maximal degree in co-relation 4888. Up to 250 conditions per place. [2022-11-18 18:28:05,798 INFO L137 encePairwiseOnDemand]: 281/288 looper letters, 15 selfloop transitions, 5 changer transitions 0/198 dead transitions. [2022-11-18 18:28:05,798 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 198 transitions, 495 flow [2022-11-18 18:28:05,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:28:05,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:28:05,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 790 transitions. [2022-11-18 18:28:05,801 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9143518518518519 [2022-11-18 18:28:05,801 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 790 transitions. [2022-11-18 18:28:05,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 790 transitions. [2022-11-18 18:28:05,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:28:05,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 790 transitions. [2022-11-18 18:28:05,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.3333333333333) internal successors, (790), 3 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:05,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:05,807 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:05,808 INFO L175 Difference]: Start difference. First operand has 188 places, 190 transitions, 434 flow. Second operand 3 states and 790 transitions. [2022-11-18 18:28:05,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 198 transitions, 495 flow [2022-11-18 18:28:05,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 198 transitions, 481 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 18:28:05,816 INFO L231 Difference]: Finished difference. Result has 190 places, 195 transitions, 464 flow [2022-11-18 18:28:05,816 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=464, PETRI_PLACES=190, PETRI_TRANSITIONS=195} [2022-11-18 18:28:05,818 INFO L288 CegarLoopForPetriNet]: 192 programPoint places, -2 predicate places. [2022-11-18 18:28:05,818 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 195 transitions, 464 flow [2022-11-18 18:28:05,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:05,819 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:28:05,820 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 18:28:05,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 18:28:05,820 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-11-18 18:28:05,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:05,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1882477257, now seen corresponding path program 1 times [2022-11-18 18:28:05,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:05,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489150469] [2022-11-18 18:28:05,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:05,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:05,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:28:05,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:28:05,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:28:05,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489150469] [2022-11-18 18:28:05,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489150469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:28:05,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:28:05,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:28:05,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873795781] [2022-11-18 18:28:05,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:28:05,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:28:05,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:28:05,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:28:05,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:28:05,897 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 288 [2022-11-18 18:28:05,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 195 transitions, 464 flow. Second operand has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:05,899 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:28:05,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 288 [2022-11-18 18:28:05,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:28:09,186 INFO L130 PetriNetUnfolder]: 3855/19917 cut-off events. [2022-11-18 18:28:09,186 INFO L131 PetriNetUnfolder]: For 597/604 co-relation queries the response was YES. [2022-11-18 18:28:09,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26535 conditions, 19917 events. 3855/19917 cut-off events. For 597/604 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 261151 event pairs, 2384 based on Foata normal form. 0/15452 useless extension candidates. Maximal degree in co-relation 26503. Up to 5096 conditions per place. [2022-11-18 18:28:09,458 INFO L137 encePairwiseOnDemand]: 280/288 looper letters, 35 selfloop transitions, 7 changer transitions 0/211 dead transitions. [2022-11-18 18:28:09,459 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 211 transitions, 588 flow [2022-11-18 18:28:09,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:28:09,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:28:09,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 751 transitions. [2022-11-18 18:28:09,463 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8692129629629629 [2022-11-18 18:28:09,463 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 751 transitions. [2022-11-18 18:28:09,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 751 transitions. [2022-11-18 18:28:09,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:28:09,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 751 transitions. [2022-11-18 18:28:09,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 250.33333333333334) internal successors, (751), 3 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:09,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:09,471 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:09,471 INFO L175 Difference]: Start difference. First operand has 190 places, 195 transitions, 464 flow. Second operand 3 states and 751 transitions. [2022-11-18 18:28:09,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 211 transitions, 588 flow [2022-11-18 18:28:09,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 211 transitions, 578 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 18:28:09,478 INFO L231 Difference]: Finished difference. Result has 192 places, 201 transitions, 508 flow [2022-11-18 18:28:09,479 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=508, PETRI_PLACES=192, PETRI_TRANSITIONS=201} [2022-11-18 18:28:09,481 INFO L288 CegarLoopForPetriNet]: 192 programPoint places, 0 predicate places. [2022-11-18 18:28:09,481 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 201 transitions, 508 flow [2022-11-18 18:28:09,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:09,482 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:28:09,483 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] [2022-11-18 18:28:09,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 18:28:09,483 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr2Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-11-18 18:28:09,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:09,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1656141403, now seen corresponding path program 1 times [2022-11-18 18:28:09,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:09,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053451598] [2022-11-18 18:28:09,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:09,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:09,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:28:09,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:28:09,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:28:09,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053451598] [2022-11-18 18:28:09,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053451598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:28:09,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:28:09,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:28:09,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302910134] [2022-11-18 18:28:09,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:28:09,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:28:09,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:28:09,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:28:09,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:28:09,573 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 288 [2022-11-18 18:28:09,575 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 201 transitions, 508 flow. Second operand has 3 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:09,575 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:28:09,575 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 288 [2022-11-18 18:28:09,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:28:10,219 INFO L130 PetriNetUnfolder]: 276/3223 cut-off events. [2022-11-18 18:28:10,219 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2022-11-18 18:28:10,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3689 conditions, 3223 events. 276/3223 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 33814 event pairs, 37 based on Foata normal form. 0/2562 useless extension candidates. Maximal degree in co-relation 3655. Up to 149 conditions per place. [2022-11-18 18:28:10,250 INFO L137 encePairwiseOnDemand]: 282/288 looper letters, 9 selfloop transitions, 4 changer transitions 0/191 dead transitions. [2022-11-18 18:28:10,250 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 191 transitions, 484 flow [2022-11-18 18:28:10,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:28:10,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:28:10,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 798 transitions. [2022-11-18 18:28:10,253 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9236111111111112 [2022-11-18 18:28:10,253 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 798 transitions. [2022-11-18 18:28:10,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 798 transitions. [2022-11-18 18:28:10,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:28:10,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 798 transitions. [2022-11-18 18:28:10,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 266.0) internal successors, (798), 3 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:10,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:10,258 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:10,258 INFO L175 Difference]: Start difference. First operand has 192 places, 201 transitions, 508 flow. Second operand 3 states and 798 transitions. [2022-11-18 18:28:10,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 191 transitions, 484 flow [2022-11-18 18:28:10,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 191 transitions, 472 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-18 18:28:10,262 INFO L231 Difference]: Finished difference. Result has 190 places, 189 transitions, 458 flow [2022-11-18 18:28:10,263 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=458, PETRI_PLACES=190, PETRI_TRANSITIONS=189} [2022-11-18 18:28:10,263 INFO L288 CegarLoopForPetriNet]: 192 programPoint places, -2 predicate places. [2022-11-18 18:28:10,264 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 189 transitions, 458 flow [2022-11-18 18:28:10,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:10,264 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:28:10,265 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:28:10,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 18:28:10,265 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-11-18 18:28:10,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:10,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1473157370, now seen corresponding path program 1 times [2022-11-18 18:28:10,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:10,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349876036] [2022-11-18 18:28:10,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:10,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:10,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:28:10,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:28:10,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:28:10,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349876036] [2022-11-18 18:28:10,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349876036] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:28:10,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:28:10,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:28:10,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057597021] [2022-11-18 18:28:10,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:28:10,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:28:10,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:28:10,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:28:10,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:28:10,296 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 288 [2022-11-18 18:28:10,297 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 189 transitions, 458 flow. Second operand has 3 states, 3 states have (on average 255.33333333333334) internal successors, (766), 3 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:10,297 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:28:10,297 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 288 [2022-11-18 18:28:10,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:28:11,450 INFO L130 PetriNetUnfolder]: 1012/7457 cut-off events. [2022-11-18 18:28:11,450 INFO L131 PetriNetUnfolder]: For 549/561 co-relation queries the response was YES. [2022-11-18 18:28:11,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10079 conditions, 7457 events. 1012/7457 cut-off events. For 549/561 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 90895 event pairs, 231 based on Foata normal form. 6/6057 useless extension candidates. Maximal degree in co-relation 10043. Up to 754 conditions per place. [2022-11-18 18:28:11,539 INFO L137 encePairwiseOnDemand]: 282/288 looper letters, 25 selfloop transitions, 8 changer transitions 0/203 dead transitions. [2022-11-18 18:28:11,539 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 203 transitions, 580 flow [2022-11-18 18:28:11,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:28:11,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:28:11,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 787 transitions. [2022-11-18 18:28:11,542 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9108796296296297 [2022-11-18 18:28:11,542 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 787 transitions. [2022-11-18 18:28:11,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 787 transitions. [2022-11-18 18:28:11,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:28:11,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 787 transitions. [2022-11-18 18:28:11,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:11,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:11,548 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:11,548 INFO L175 Difference]: Start difference. First operand has 190 places, 189 transitions, 458 flow. Second operand 3 states and 787 transitions. [2022-11-18 18:28:11,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 203 transitions, 580 flow [2022-11-18 18:28:11,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 203 transitions, 572 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 18:28:11,554 INFO L231 Difference]: Finished difference. Result has 192 places, 195 transitions, 516 flow [2022-11-18 18:28:11,555 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=516, PETRI_PLACES=192, PETRI_TRANSITIONS=195} [2022-11-18 18:28:11,556 INFO L288 CegarLoopForPetriNet]: 192 programPoint places, 0 predicate places. [2022-11-18 18:28:11,556 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 195 transitions, 516 flow [2022-11-18 18:28:11,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 255.33333333333334) internal successors, (766), 3 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:11,557 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:28:11,557 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] [2022-11-18 18:28:11,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 18:28:11,558 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-11-18 18:28:11,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:11,558 INFO L85 PathProgramCache]: Analyzing trace with hash 771210497, now seen corresponding path program 1 times [2022-11-18 18:28:11,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:11,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546332787] [2022-11-18 18:28:11,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:11,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:28:11,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:28:11,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:28:11,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546332787] [2022-11-18 18:28:11,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546332787] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:28:11,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:28:11,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:28:11,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914270537] [2022-11-18 18:28:11,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:28:11,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:28:11,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:28:11,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:28:11,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:28:11,611 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 288 [2022-11-18 18:28:11,612 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 195 transitions, 516 flow. Second operand has 3 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:11,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:28:11,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 288 [2022-11-18 18:28:11,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:28:11,696 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([704] L692-4-->L692-1: Formula: (= |v_#race~release_thr1~0_1| 0) InVars {} OutVars{#race~release_thr1~0=|v_#race~release_thr1~0_1|} AuxVars[] AssignedVars[#race~release_thr1~0][92], [Black: 284#true, 308#true, Black: 292#(= |thr1Thread1of2ForFork1_#t~nondet9#1| |#race~locked~0|), 164#L746-6true, 302#true, Black: 298#(= 0 ~release_thr1~0), thr2Thread1of2ForFork0InUse, 197#L692-1true, thr2Thread2of2ForFork0InUse, thr1Thread1of2ForFork1InUse, Black: 304#(= |#race~release_thr1~0| |thr1Thread1of2ForFork1_#t~nondet10#1|), 31#L721-4true, Black: 280#(= |thr1Thread1of2ForFork1_#t~nondet8#1| |#race~usecount~0|), 55#L692-2true]) [2022-11-18 18:28:11,697 INFO L383 tUnfolder$Statistics]: this new event has 61 ancestors and is cut-off event [2022-11-18 18:28:11,697 INFO L386 tUnfolder$Statistics]: existing Event has 58 ancestors and is cut-off event [2022-11-18 18:28:11,697 INFO L386 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-11-18 18:28:11,697 INFO L386 tUnfolder$Statistics]: existing Event has 58 ancestors and is cut-off event [2022-11-18 18:28:11,700 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([704] L692-4-->L692-1: Formula: (= |v_#race~release_thr1~0_1| 0) InVars {} OutVars{#race~release_thr1~0=|v_#race~release_thr1~0_1|} AuxVars[] AssignedVars[#race~release_thr1~0][92], [Black: 284#true, 308#true, Black: 292#(= |thr1Thread1of2ForFork1_#t~nondet9#1| |#race~locked~0|), 164#L746-6true, 302#true, Black: 296#true, thr2Thread1of2ForFork0InUse, 197#L692-1true, thr2Thread2of2ForFork0InUse, thr1Thread1of2ForFork1InUse, Black: 304#(= |#race~release_thr1~0| |thr1Thread1of2ForFork1_#t~nondet10#1|), 31#L721-4true, Black: 280#(= |thr1Thread1of2ForFork1_#t~nondet8#1| |#race~usecount~0|), 55#L692-2true]) [2022-11-18 18:28:11,701 INFO L383 tUnfolder$Statistics]: this new event has 61 ancestors and is cut-off event [2022-11-18 18:28:11,701 INFO L386 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-11-18 18:28:11,701 INFO L386 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-11-18 18:28:11,701 INFO L386 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-11-18 18:28:11,703 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([668] L692-4-->L692-1: Formula: (= |v_#race~release_thr1~0_1| 0) InVars {} OutVars{#race~release_thr1~0=|v_#race~release_thr1~0_1|} AuxVars[] AssignedVars[#race~release_thr1~0][87], [Black: 284#true, 308#true, Black: 292#(= |thr1Thread1of2ForFork1_#t~nondet9#1| |#race~locked~0|), 122#L692-2true, 164#L746-6true, 302#true, 153#L692-1true, Black: 296#true, thr2Thread1of2ForFork0InUse, thr2Thread2of2ForFork0InUse, thr1Thread1of2ForFork1InUse, Black: 304#(= |#race~release_thr1~0| |thr1Thread1of2ForFork1_#t~nondet10#1|), 31#L721-4true, Black: 280#(= |thr1Thread1of2ForFork1_#t~nondet8#1| |#race~usecount~0|)]) [2022-11-18 18:28:11,704 INFO L383 tUnfolder$Statistics]: this new event has 61 ancestors and is cut-off event [2022-11-18 18:28:11,704 INFO L386 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-11-18 18:28:11,704 INFO L386 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-11-18 18:28:11,704 INFO L386 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-11-18 18:28:11,710 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([668] L692-4-->L692-1: Formula: (= |v_#race~release_thr1~0_1| 0) InVars {} OutVars{#race~release_thr1~0=|v_#race~release_thr1~0_1|} AuxVars[] AssignedVars[#race~release_thr1~0][87], [Black: 284#true, 308#true, Black: 292#(= |thr1Thread1of2ForFork1_#t~nondet9#1| |#race~locked~0|), 164#L746-6true, 302#true, 122#L692-2true, 153#L692-1true, Black: 298#(= 0 ~release_thr1~0), thr2Thread1of2ForFork0InUse, thr2Thread2of2ForFork0InUse, thr1Thread1of2ForFork1InUse, Black: 304#(= |#race~release_thr1~0| |thr1Thread1of2ForFork1_#t~nondet10#1|), 31#L721-4true, Black: 280#(= |thr1Thread1of2ForFork1_#t~nondet8#1| |#race~usecount~0|)]) [2022-11-18 18:28:11,711 INFO L383 tUnfolder$Statistics]: this new event has 61 ancestors and is cut-off event [2022-11-18 18:28:11,711 INFO L386 tUnfolder$Statistics]: existing Event has 58 ancestors and is cut-off event [2022-11-18 18:28:11,711 INFO L386 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-11-18 18:28:11,711 INFO L386 tUnfolder$Statistics]: existing Event has 58 ancestors and is cut-off event [2022-11-18 18:28:11,731 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([704] L692-4-->L692-1: Formula: (= |v_#race~release_thr1~0_1| 0) InVars {} OutVars{#race~release_thr1~0=|v_#race~release_thr1~0_1|} AuxVars[] AssignedVars[#race~release_thr1~0][47], [Black: 284#true, 308#true, Black: 292#(= |thr1Thread1of2ForFork1_#t~nondet9#1| |#race~locked~0|), 302#true, 164#L746-6true, Black: 296#true, 197#L692-1true, thr2Thread1of2ForFork0InUse, thr2Thread2of2ForFork0InUse, thr1Thread1of2ForFork1InUse, Black: 304#(= |#race~release_thr1~0| |thr1Thread1of2ForFork1_#t~nondet10#1|), 124#L722-2true, Black: 280#(= |thr1Thread1of2ForFork1_#t~nondet8#1| |#race~usecount~0|), 55#L692-2true]) [2022-11-18 18:28:11,731 INFO L383 tUnfolder$Statistics]: this new event has 62 ancestors and is cut-off event [2022-11-18 18:28:11,732 INFO L386 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-11-18 18:28:11,732 INFO L386 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-11-18 18:28:11,732 INFO L386 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-11-18 18:28:11,740 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([704] L692-4-->L692-1: Formula: (= |v_#race~release_thr1~0_1| 0) InVars {} OutVars{#race~release_thr1~0=|v_#race~release_thr1~0_1|} AuxVars[] AssignedVars[#race~release_thr1~0][47], [Black: 284#true, 308#true, Black: 292#(= |thr1Thread1of2ForFork1_#t~nondet9#1| |#race~locked~0|), 164#L746-6true, 302#true, Black: 298#(= 0 ~release_thr1~0), thr2Thread1of2ForFork0InUse, 197#L692-1true, thr2Thread2of2ForFork0InUse, thr1Thread1of2ForFork1InUse, 124#L722-2true, Black: 304#(= |#race~release_thr1~0| |thr1Thread1of2ForFork1_#t~nondet10#1|), Black: 280#(= |thr1Thread1of2ForFork1_#t~nondet8#1| |#race~usecount~0|), 55#L692-2true]) [2022-11-18 18:28:11,740 INFO L383 tUnfolder$Statistics]: this new event has 62 ancestors and is cut-off event [2022-11-18 18:28:11,740 INFO L386 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-11-18 18:28:11,740 INFO L386 tUnfolder$Statistics]: existing Event has 59 ancestors and is cut-off event [2022-11-18 18:28:11,741 INFO L386 tUnfolder$Statistics]: existing Event has 59 ancestors and is cut-off event [2022-11-18 18:28:11,747 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([668] L692-4-->L692-1: Formula: (= |v_#race~release_thr1~0_1| 0) InVars {} OutVars{#race~release_thr1~0=|v_#race~release_thr1~0_1|} AuxVars[] AssignedVars[#race~release_thr1~0][57], [Black: 284#true, 308#true, Black: 292#(= |thr1Thread1of2ForFork1_#t~nondet9#1| |#race~locked~0|), 302#true, 122#L692-2true, 164#L746-6true, 153#L692-1true, Black: 296#true, thr2Thread1of2ForFork0InUse, thr2Thread2of2ForFork0InUse, thr1Thread1of2ForFork1InUse, Black: 304#(= |#race~release_thr1~0| |thr1Thread1of2ForFork1_#t~nondet10#1|), 124#L722-2true, Black: 280#(= |thr1Thread1of2ForFork1_#t~nondet8#1| |#race~usecount~0|)]) [2022-11-18 18:28:11,748 INFO L383 tUnfolder$Statistics]: this new event has 62 ancestors and is cut-off event [2022-11-18 18:28:11,748 INFO L386 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-11-18 18:28:11,748 INFO L386 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-11-18 18:28:11,748 INFO L386 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-11-18 18:28:11,750 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([668] L692-4-->L692-1: Formula: (= |v_#race~release_thr1~0_1| 0) InVars {} OutVars{#race~release_thr1~0=|v_#race~release_thr1~0_1|} AuxVars[] AssignedVars[#race~release_thr1~0][57], [Black: 284#true, 308#true, Black: 292#(= |thr1Thread1of2ForFork1_#t~nondet9#1| |#race~locked~0|), 302#true, 164#L746-6true, 122#L692-2true, Black: 298#(= 0 ~release_thr1~0), 153#L692-1true, thr2Thread1of2ForFork0InUse, thr2Thread2of2ForFork0InUse, thr1Thread1of2ForFork1InUse, 124#L722-2true, Black: 304#(= |#race~release_thr1~0| |thr1Thread1of2ForFork1_#t~nondet10#1|), Black: 280#(= |thr1Thread1of2ForFork1_#t~nondet8#1| |#race~usecount~0|)]) [2022-11-18 18:28:11,750 INFO L383 tUnfolder$Statistics]: this new event has 62 ancestors and is cut-off event [2022-11-18 18:28:11,751 INFO L386 tUnfolder$Statistics]: existing Event has 59 ancestors and is cut-off event [2022-11-18 18:28:11,751 INFO L386 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-11-18 18:28:11,751 INFO L386 tUnfolder$Statistics]: existing Event has 59 ancestors and is cut-off event [2022-11-18 18:28:11,763 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([668] L692-4-->L692-1: Formula: (= |v_#race~release_thr1~0_1| 0) InVars {} OutVars{#race~release_thr1~0=|v_#race~release_thr1~0_1|} AuxVars[] AssignedVars[#race~release_thr1~0][57], [Black: 284#true, 308#true, Black: 292#(= |thr1Thread1of2ForFork1_#t~nondet9#1| |#race~locked~0|), 164#L746-6true, 302#true, 153#L692-1true, Black: 296#true, thr2Thread1of2ForFork0InUse, 197#L692-1true, thr2Thread2of2ForFork0InUse, thr1Thread1of2ForFork1InUse, Black: 304#(= |#race~release_thr1~0| |thr1Thread1of2ForFork1_#t~nondet10#1|), 181#thr1Err2ASSERT_VIOLATIONDATA_RACEtrue, Black: 280#(= |thr1Thread1of2ForFork1_#t~nondet8#1| |#race~usecount~0|)]) [2022-11-18 18:28:11,764 INFO L383 tUnfolder$Statistics]: this new event has 63 ancestors and is cut-off event [2022-11-18 18:28:11,764 INFO L386 tUnfolder$Statistics]: existing Event has 60 ancestors and is cut-off event [2022-11-18 18:28:11,764 INFO L386 tUnfolder$Statistics]: existing Event has 60 ancestors and is cut-off event [2022-11-18 18:28:11,764 INFO L386 tUnfolder$Statistics]: existing Event has 60 ancestors and is cut-off event [2022-11-18 18:28:11,783 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([704] L692-4-->L692-1: Formula: (= |v_#race~release_thr1~0_1| 0) InVars {} OutVars{#race~release_thr1~0=|v_#race~release_thr1~0_1|} AuxVars[] AssignedVars[#race~release_thr1~0][47], [Black: 284#true, 308#true, Black: 292#(= |thr1Thread1of2ForFork1_#t~nondet9#1| |#race~locked~0|), 302#true, 164#L746-6true, 153#L692-1true, Black: 296#true, 197#L692-1true, thr2Thread1of2ForFork0InUse, thr2Thread2of2ForFork0InUse, thr1Thread1of2ForFork1InUse, 124#L722-2true, Black: 304#(= |#race~release_thr1~0| |thr1Thread1of2ForFork1_#t~nondet10#1|), Black: 280#(= |thr1Thread1of2ForFork1_#t~nondet8#1| |#race~usecount~0|)]) [2022-11-18 18:28:11,783 INFO L383 tUnfolder$Statistics]: this new event has 64 ancestors and is cut-off event [2022-11-18 18:28:11,784 INFO L386 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-11-18 18:28:11,784 INFO L386 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-11-18 18:28:11,784 INFO L386 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-11-18 18:28:11,785 INFO L381 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([704] L692-4-->L692-1: Formula: (= |v_#race~release_thr1~0_1| 0) InVars {} OutVars{#race~release_thr1~0=|v_#race~release_thr1~0_1|} AuxVars[] AssignedVars[#race~release_thr1~0][47], [Black: 284#true, 308#true, Black: 292#(= |thr1Thread1of2ForFork1_#t~nondet9#1| |#race~locked~0|), 302#true, 164#L746-6true, Black: 296#true, 197#L692-1true, thr2Thread1of2ForFork0InUse, thr2Thread2of2ForFork0InUse, thr1Thread1of2ForFork1InUse, 124#L722-2true, Black: 304#(= |#race~release_thr1~0| |thr1Thread1of2ForFork1_#t~nondet10#1|), Black: 280#(= |thr1Thread1of2ForFork1_#t~nondet8#1| |#race~usecount~0|), 55#L692-2true]) [2022-11-18 18:28:11,785 INFO L383 tUnfolder$Statistics]: this new event has 65 ancestors and is cut-off event [2022-11-18 18:28:11,785 INFO L386 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-11-18 18:28:11,785 INFO L386 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-11-18 18:28:11,785 INFO L386 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-11-18 18:28:11,786 INFO L386 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-11-18 18:28:11,787 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([668] L692-4-->L692-1: Formula: (= |v_#race~release_thr1~0_1| 0) InVars {} OutVars{#race~release_thr1~0=|v_#race~release_thr1~0_1|} AuxVars[] AssignedVars[#race~release_thr1~0][57], [Black: 284#true, 308#true, Black: 292#(= |thr1Thread1of2ForFork1_#t~nondet9#1| |#race~locked~0|), 122#L692-2true, 164#L746-6true, 302#true, 153#L692-1true, Black: 296#true, thr2Thread1of2ForFork0InUse, thr2Thread2of2ForFork0InUse, thr1Thread1of2ForFork1InUse, Black: 304#(= |#race~release_thr1~0| |thr1Thread1of2ForFork1_#t~nondet10#1|), 181#thr1Err2ASSERT_VIOLATIONDATA_RACEtrue, Black: 280#(= |thr1Thread1of2ForFork1_#t~nondet8#1| |#race~usecount~0|)]) [2022-11-18 18:28:11,787 INFO L383 tUnfolder$Statistics]: this new event has 64 ancestors and is cut-off event [2022-11-18 18:28:11,787 INFO L386 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-11-18 18:28:11,787 INFO L386 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-11-18 18:28:11,787 INFO L386 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-11-18 18:28:13,395 INFO L130 PetriNetUnfolder]: 1669/13245 cut-off events. [2022-11-18 18:28:13,395 INFO L131 PetriNetUnfolder]: For 710/726 co-relation queries the response was YES. [2022-11-18 18:28:13,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16881 conditions, 13245 events. 1669/13245 cut-off events. For 710/726 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 166896 event pairs, 312 based on Foata normal form. 3/10567 useless extension candidates. Maximal degree in co-relation 16845. Up to 873 conditions per place. [2022-11-18 18:28:13,539 INFO L137 encePairwiseOnDemand]: 283/288 looper letters, 18 selfloop transitions, 4 changer transitions 0/205 dead transitions. [2022-11-18 18:28:13,540 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 205 transitions, 588 flow [2022-11-18 18:28:13,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:28:13,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:28:13,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 791 transitions. [2022-11-18 18:28:13,543 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9155092592592593 [2022-11-18 18:28:13,543 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 791 transitions. [2022-11-18 18:28:13,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 791 transitions. [2022-11-18 18:28:13,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:28:13,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 791 transitions. [2022-11-18 18:28:13,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.6666666666667) internal successors, (791), 3 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:13,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:13,549 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:13,549 INFO L175 Difference]: Start difference. First operand has 192 places, 195 transitions, 516 flow. Second operand 3 states and 791 transitions. [2022-11-18 18:28:13,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 205 transitions, 588 flow [2022-11-18 18:28:13,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 205 transitions, 572 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 18:28:13,556 INFO L231 Difference]: Finished difference. Result has 194 places, 199 transitions, 534 flow [2022-11-18 18:28:13,556 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=534, PETRI_PLACES=194, PETRI_TRANSITIONS=199} [2022-11-18 18:28:13,557 INFO L288 CegarLoopForPetriNet]: 192 programPoint places, 2 predicate places. [2022-11-18 18:28:13,557 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 199 transitions, 534 flow [2022-11-18 18:28:13,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:13,558 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:28:13,558 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:28:13,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 18:28:13,559 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-11-18 18:28:13,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:13,560 INFO L85 PathProgramCache]: Analyzing trace with hash 137172283, now seen corresponding path program 1 times [2022-11-18 18:28:13,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:13,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277662143] [2022-11-18 18:28:13,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:13,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:13,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:28:13,585 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:28:13,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:28:13,606 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:28:13,606 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 18:28:13,607 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (52 of 53 remaining) [2022-11-18 18:28:13,607 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (51 of 53 remaining) [2022-11-18 18:28:13,607 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (50 of 53 remaining) [2022-11-18 18:28:13,607 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (49 of 53 remaining) [2022-11-18 18:28:13,608 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (48 of 53 remaining) [2022-11-18 18:28:13,608 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (47 of 53 remaining) [2022-11-18 18:28:13,608 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (46 of 53 remaining) [2022-11-18 18:28:13,610 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (45 of 53 remaining) [2022-11-18 18:28:13,611 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (44 of 53 remaining) [2022-11-18 18:28:13,611 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (43 of 53 remaining) [2022-11-18 18:28:13,611 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (42 of 53 remaining) [2022-11-18 18:28:13,611 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (41 of 53 remaining) [2022-11-18 18:28:13,612 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (40 of 53 remaining) [2022-11-18 18:28:13,612 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (39 of 53 remaining) [2022-11-18 18:28:13,612 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (38 of 53 remaining) [2022-11-18 18:28:13,612 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (37 of 53 remaining) [2022-11-18 18:28:13,612 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (36 of 53 remaining) [2022-11-18 18:28:13,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (35 of 53 remaining) [2022-11-18 18:28:13,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (34 of 53 remaining) [2022-11-18 18:28:13,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (33 of 53 remaining) [2022-11-18 18:28:13,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (32 of 53 remaining) [2022-11-18 18:28:13,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (31 of 53 remaining) [2022-11-18 18:28:13,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (30 of 53 remaining) [2022-11-18 18:28:13,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (29 of 53 remaining) [2022-11-18 18:28:13,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (28 of 53 remaining) [2022-11-18 18:28:13,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (27 of 53 remaining) [2022-11-18 18:28:13,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (26 of 53 remaining) [2022-11-18 18:28:13,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (25 of 53 remaining) [2022-11-18 18:28:13,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (24 of 53 remaining) [2022-11-18 18:28:13,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (23 of 53 remaining) [2022-11-18 18:28:13,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (22 of 53 remaining) [2022-11-18 18:28:13,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (21 of 53 remaining) [2022-11-18 18:28:13,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (20 of 53 remaining) [2022-11-18 18:28:13,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (19 of 53 remaining) [2022-11-18 18:28:13,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (18 of 53 remaining) [2022-11-18 18:28:13,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (17 of 53 remaining) [2022-11-18 18:28:13,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 53 remaining) [2022-11-18 18:28:13,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (15 of 53 remaining) [2022-11-18 18:28:13,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (14 of 53 remaining) [2022-11-18 18:28:13,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (13 of 53 remaining) [2022-11-18 18:28:13,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (12 of 53 remaining) [2022-11-18 18:28:13,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (11 of 53 remaining) [2022-11-18 18:28:13,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 53 remaining) [2022-11-18 18:28:13,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 53 remaining) [2022-11-18 18:28:13,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (8 of 53 remaining) [2022-11-18 18:28:13,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 53 remaining) [2022-11-18 18:28:13,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (6 of 53 remaining) [2022-11-18 18:28:13,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 53 remaining) [2022-11-18 18:28:13,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (4 of 53 remaining) [2022-11-18 18:28:13,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (3 of 53 remaining) [2022-11-18 18:28:13,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (2 of 53 remaining) [2022-11-18 18:28:13,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (1 of 53 remaining) [2022-11-18 18:28:13,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (0 of 53 remaining) [2022-11-18 18:28:13,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 18:28:13,620 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:28:13,621 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 18:28:13,621 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-18 18:28:13,674 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 18:28:13,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 393 places, 413 transitions, 868 flow [2022-11-18 18:28:13,727 INFO L130 PetriNetUnfolder]: 21/273 cut-off events. [2022-11-18 18:28:13,728 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-18 18:28:13,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 273 events. 21/273 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 971 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 287. Up to 8 conditions per place. [2022-11-18 18:28:13,732 INFO L82 GeneralOperation]: Start removeDead. Operand has 393 places, 413 transitions, 868 flow [2022-11-18 18:28:13,739 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 228 places, 236 transitions, 496 flow [2022-11-18 18:28:13,740 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:28:13,741 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;@769b6277, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:28:13,741 INFO L358 AbstractCegarLoop]: Starting to check reachability of 70 error locations. [2022-11-18 18:28:13,744 INFO L130 PetriNetUnfolder]: 1/41 cut-off events. [2022-11-18 18:28:13,744 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:28:13,744 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:28:13,744 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:28:13,745 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 66 more)] === [2022-11-18 18:28:13,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:13,745 INFO L85 PathProgramCache]: Analyzing trace with hash 2056791504, now seen corresponding path program 1 times [2022-11-18 18:28:13,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:13,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995545711] [2022-11-18 18:28:13,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:13,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:28:13,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:28:13,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:28:13,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995545711] [2022-11-18 18:28:13,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995545711] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:28:13,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:28:13,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:28:13,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127664409] [2022-11-18 18:28:13,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:28:13,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:28:13,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:28:13,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:28:13,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:28:13,773 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 413 [2022-11-18 18:28:13,774 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 236 transitions, 496 flow. Second operand has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:13,775 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:28:13,775 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 413 [2022-11-18 18:28:13,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:28:22,242 INFO L130 PetriNetUnfolder]: 25188/65631 cut-off events. [2022-11-18 18:28:22,242 INFO L131 PetriNetUnfolder]: For 7242/7242 co-relation queries the response was YES. [2022-11-18 18:28:22,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103867 conditions, 65631 events. 25188/65631 cut-off events. For 7242/7242 co-relation queries the response was YES. Maximal size of possible extension queue 1720. Compared 826683 event pairs, 20277 based on Foata normal form. 14241/63634 useless extension candidates. Maximal degree in co-relation 103836. Up to 30610 conditions per place. [2022-11-18 18:28:23,212 INFO L137 encePairwiseOnDemand]: 393/413 looper letters, 56 selfloop transitions, 9 changer transitions 0/243 dead transitions. [2022-11-18 18:28:23,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 243 transitions, 655 flow [2022-11-18 18:28:23,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:28:23,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:28:23,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1011 transitions. [2022-11-18 18:28:23,218 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8159806295399515 [2022-11-18 18:28:23,218 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1011 transitions. [2022-11-18 18:28:23,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1011 transitions. [2022-11-18 18:28:23,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:28:23,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1011 transitions. [2022-11-18 18:28:23,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 337.0) internal successors, (1011), 3 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:23,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:23,226 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:23,227 INFO L175 Difference]: Start difference. First operand has 228 places, 236 transitions, 496 flow. Second operand 3 states and 1011 transitions. [2022-11-18 18:28:23,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 243 transitions, 655 flow [2022-11-18 18:28:23,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 243 transitions, 646 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-18 18:28:23,236 INFO L231 Difference]: Finished difference. Result has 224 places, 228 transitions, 527 flow [2022-11-18 18:28:23,237 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=527, PETRI_PLACES=224, PETRI_TRANSITIONS=228} [2022-11-18 18:28:23,238 INFO L288 CegarLoopForPetriNet]: 228 programPoint places, -4 predicate places. [2022-11-18 18:28:23,238 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 228 transitions, 527 flow [2022-11-18 18:28:23,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:23,239 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:28:23,239 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:28:23,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 18:28:23,239 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 66 more)] === [2022-11-18 18:28:23,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:23,240 INFO L85 PathProgramCache]: Analyzing trace with hash -339923264, now seen corresponding path program 1 times [2022-11-18 18:28:23,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:23,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889493397] [2022-11-18 18:28:23,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:23,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:23,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:28:23,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:28:23,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:28:23,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889493397] [2022-11-18 18:28:23,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889493397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:28:23,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:28:23,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:28:23,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762258967] [2022-11-18 18:28:23,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:28:23,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:28:23,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:28:23,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:28:23,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:28:23,286 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 366 out of 413 [2022-11-18 18:28:23,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 228 transitions, 527 flow. Second operand has 3 states, 3 states have (on average 367.3333333333333) internal successors, (1102), 3 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:23,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:28:23,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 366 of 413 [2022-11-18 18:28:23,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:28:25,719 INFO L130 PetriNetUnfolder]: 3770/21676 cut-off events. [2022-11-18 18:28:25,720 INFO L131 PetriNetUnfolder]: For 835/835 co-relation queries the response was YES. [2022-11-18 18:28:25,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27892 conditions, 21676 events. 3770/21676 cut-off events. For 835/835 co-relation queries the response was YES. Maximal size of possible extension queue 671. Compared 303204 event pairs, 1034 based on Foata normal form. 0/17206 useless extension candidates. Maximal degree in co-relation 27860. Up to 2065 conditions per place. [2022-11-18 18:28:26,234 INFO L137 encePairwiseOnDemand]: 403/413 looper letters, 20 selfloop transitions, 7 changer transitions 0/239 dead transitions. [2022-11-18 18:28:26,234 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 239 transitions, 613 flow [2022-11-18 18:28:26,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:28:26,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:28:26,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1128 transitions. [2022-11-18 18:28:26,243 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.910411622276029 [2022-11-18 18:28:26,243 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1128 transitions. [2022-11-18 18:28:26,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1128 transitions. [2022-11-18 18:28:26,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:28:26,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1128 transitions. [2022-11-18 18:28:26,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 376.0) internal successors, (1128), 3 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:26,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:26,260 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:26,261 INFO L175 Difference]: Start difference. First operand has 224 places, 228 transitions, 527 flow. Second operand 3 states and 1128 transitions. [2022-11-18 18:28:26,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 239 transitions, 613 flow [2022-11-18 18:28:26,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 239 transitions, 595 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 18:28:26,277 INFO L231 Difference]: Finished difference. Result has 226 places, 235 transitions, 571 flow [2022-11-18 18:28:26,277 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=571, PETRI_PLACES=226, PETRI_TRANSITIONS=235} [2022-11-18 18:28:26,280 INFO L288 CegarLoopForPetriNet]: 228 programPoint places, -2 predicate places. [2022-11-18 18:28:26,280 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 235 transitions, 571 flow [2022-11-18 18:28:26,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 367.3333333333333) internal successors, (1102), 3 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:26,281 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:28:26,281 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 18:28:26,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 18:28:26,281 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 66 more)] === [2022-11-18 18:28:26,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:26,282 INFO L85 PathProgramCache]: Analyzing trace with hash 893924755, now seen corresponding path program 1 times [2022-11-18 18:28:26,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:26,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899168510] [2022-11-18 18:28:26,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:26,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:26,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:28:26,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:28:26,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:28:26,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899168510] [2022-11-18 18:28:26,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899168510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:28:26,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:28:26,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:28:26,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318104107] [2022-11-18 18:28:26,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:28:26,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:28:26,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:28:26,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:28:26,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:28:26,310 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 337 out of 413 [2022-11-18 18:28:26,312 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 235 transitions, 571 flow. Second operand has 3 states, 3 states have (on average 338.3333333333333) internal successors, (1015), 3 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:26,312 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:28:26,312 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 337 of 413 [2022-11-18 18:28:26,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand