./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-atomic/read_write_lock-2b.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b64bb5-ca96-439a-92f6-c17043959eb8/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b64bb5-ca96-439a-92f6-c17043959eb8/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b64bb5-ca96-439a-92f6-c17043959eb8/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b64bb5-ca96-439a-92f6-c17043959eb8/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/read_write_lock-2b.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b64bb5-ca96-439a-92f6-c17043959eb8/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b64bb5-ca96-439a-92f6-c17043959eb8/bin/uautomizer-J5u9QxTXDZ --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 7b71c781c26c072fdf5838e0877462128517513c3df1f3bde9f2474cb4533ecb --- 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-dbf71c6-m [2022-10-17 10:45:39,032 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:45:39,034 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:45:39,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:45:39,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:45:39,074 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:45:39,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:45:39,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:45:39,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:45:39,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:45:39,082 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:45:39,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:45:39,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:45:39,085 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:45:39,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:45:39,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:45:39,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:45:39,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:45:39,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:45:39,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:45:39,111 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:45:39,113 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:45:39,118 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:45:39,119 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:45:39,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:45:39,132 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:45:39,133 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:45:39,134 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:45:39,136 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:45:39,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:45:39,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:45:39,140 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:45:39,142 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:45:39,144 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:45:39,147 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:45:39,148 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:45:39,149 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:45:39,149 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:45:39,150 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:45:39,151 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:45:39,151 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:45:39,152 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b64bb5-ca96-439a-92f6-c17043959eb8/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-10-17 10:45:39,190 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:45:39,191 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:45:39,191 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:45:39,191 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:45:39,192 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:45:39,192 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:45:39,193 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:45:39,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:45:39,194 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:45:39,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:45:39,194 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:45:39,194 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 10:45:39,195 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:45:39,195 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:45:39,195 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:45:39,195 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:45:39,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:45:39,196 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:45:39,196 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-10-17 10:45:39,196 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:45:39,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:45:39,197 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:45:39,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:45:39,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:45:39,203 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:45:39,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:45:39,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:45:39,204 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:45:39,204 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:45:39,205 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:45:39,205 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:45:39,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:45:39,205 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:45:39,205 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:45:39,206 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:45:39,206 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_02b64bb5-ca96-439a-92f6-c17043959eb8/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b64bb5-ca96-439a-92f6-c17043959eb8/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b71c781c26c072fdf5838e0877462128517513c3df1f3bde9f2474cb4533ecb [2022-10-17 10:45:39,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:45:39,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:45:39,472 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:45:39,473 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:45:39,474 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:45:39,475 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b64bb5-ca96-439a-92f6-c17043959eb8/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/pthread-atomic/read_write_lock-2b.i [2022-10-17 10:45:39,560 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b64bb5-ca96-439a-92f6-c17043959eb8/bin/uautomizer-J5u9QxTXDZ/data/2c822a1fd/ff820eda2a9847e8962502a3a667d44c/FLAGdbb181c3f [2022-10-17 10:45:40,073 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:45:40,075 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b64bb5-ca96-439a-92f6-c17043959eb8/sv-benchmarks/c/pthread-atomic/read_write_lock-2b.i [2022-10-17 10:45:40,087 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b64bb5-ca96-439a-92f6-c17043959eb8/bin/uautomizer-J5u9QxTXDZ/data/2c822a1fd/ff820eda2a9847e8962502a3a667d44c/FLAGdbb181c3f [2022-10-17 10:45:40,389 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b64bb5-ca96-439a-92f6-c17043959eb8/bin/uautomizer-J5u9QxTXDZ/data/2c822a1fd/ff820eda2a9847e8962502a3a667d44c [2022-10-17 10:45:40,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:45:40,401 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:45:40,407 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:45:40,407 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:45:40,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:45:40,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:45:40" (1/1) ... [2022-10-17 10:45:40,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@752f2aa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:45:40, skipping insertion in model container [2022-10-17 10:45:40,412 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:45:40" (1/1) ... [2022-10-17 10:45:40,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:45:40,480 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:45:40,878 WARN L230 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_02b64bb5-ca96-439a-92f6-c17043959eb8/sv-benchmarks/c/pthread-atomic/read_write_lock-2b.i[30358,30371] [2022-10-17 10:45:40,897 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:45:40,911 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:45:40,975 WARN L230 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_02b64bb5-ca96-439a-92f6-c17043959eb8/sv-benchmarks/c/pthread-atomic/read_write_lock-2b.i[30358,30371] [2022-10-17 10:45:41,000 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:45:41,054 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:45:41,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:45:41 WrapperNode [2022-10-17 10:45:41,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:45:41,056 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:45:41,056 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:45:41,057 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:45:41,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:45:41" (1/1) ... [2022-10-17 10:45:41,105 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:45:41" (1/1) ... [2022-10-17 10:45:41,148 INFO L138 Inliner]: procedures = 170, calls = 34, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 166 [2022-10-17 10:45:41,149 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:45:41,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:45:41,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:45:41,151 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:45:41,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:45:41" (1/1) ... [2022-10-17 10:45:41,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:45:41" (1/1) ... [2022-10-17 10:45:41,175 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:45:41" (1/1) ... [2022-10-17 10:45:41,177 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:45:41" (1/1) ... [2022-10-17 10:45:41,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:45:41" (1/1) ... [2022-10-17 10:45:41,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:45:41" (1/1) ... [2022-10-17 10:45:41,204 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:45:41" (1/1) ... [2022-10-17 10:45:41,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:45:41" (1/1) ... [2022-10-17 10:45:41,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:45:41,222 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:45:41,222 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:45:41,223 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:45:41,223 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:45:41" (1/1) ... [2022-10-17 10:45:41,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:45:41,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b64bb5-ca96-439a-92f6-c17043959eb8/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:45:41,259 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b64bb5-ca96-439a-92f6-c17043959eb8/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:45:41,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b64bb5-ca96-439a-92f6-c17043959eb8/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:45:41,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:45:41,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:45:41,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:45:41,308 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2022-10-17 10:45:41,308 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2022-10-17 10:45:41,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:45:41,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:45:41,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:45:41,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:45:41,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:45:41,310 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2022-10-17 10:45:41,310 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2022-10-17 10:45:41,311 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 10:45:41,478 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:45:41,480 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:45:41,924 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:45:42,061 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:45:42,061 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:45:42,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:45:42 BoogieIcfgContainer [2022-10-17 10:45:42,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:45:42,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:45:42,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:45:42,070 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:45:42,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:45:40" (1/3) ... [2022-10-17 10:45:42,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4353a7e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:45:42, skipping insertion in model container [2022-10-17 10:45:42,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:45:41" (2/3) ... [2022-10-17 10:45:42,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4353a7e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:45:42, skipping insertion in model container [2022-10-17 10:45:42,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:45:42" (3/3) ... [2022-10-17 10:45:42,073 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-2b.i [2022-10-17 10:45:42,082 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:45:42,092 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:45:42,093 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-10-17 10:45:42,093 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:45:42,178 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-10-17 10:45:42,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 210 transitions, 452 flow [2022-10-17 10:45:42,368 INFO L130 PetriNetUnfolder]: 2/206 cut-off events. [2022-10-17 10:45:42,368 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-10-17 10:45:42,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 206 events. 2/206 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 398 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 153. Up to 2 conditions per place. [2022-10-17 10:45:42,379 INFO L82 GeneralOperation]: Start removeDead. Operand has 221 places, 210 transitions, 452 flow [2022-10-17 10:45:42,394 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 192 transitions, 405 flow [2022-10-17 10:45:42,415 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:45:42,424 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;@5cb01ca4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:45:42,424 INFO L358 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2022-10-17 10:45:42,437 INFO L130 PetriNetUnfolder]: 0/27 cut-off events. [2022-10-17 10:45:42,437 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:45:42,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:45:42,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:45:42,440 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting writerErr1ASSERT_VIOLATIONDATA_RACE === [readerErr0ASSERT_VIOLATIONDATA_RACE, readerErr1ASSERT_VIOLATIONDATA_RACE, readerErr2ASSERT_VIOLATIONDATA_RACE, readerErr3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2022-10-17 10:45:42,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:45:42,446 INFO L85 PathProgramCache]: Analyzing trace with hash -501401201, now seen corresponding path program 1 times [2022-10-17 10:45:42,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:45:42,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279351822] [2022-10-17 10:45:42,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:45:42,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:45:42,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:45:42,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:45:42,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:45:42,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279351822] [2022-10-17 10:45:42,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279351822] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:45:42,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:45:42,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-17 10:45:42,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820392116] [2022-10-17 10:45:42,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:45:42,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:45:42,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:45:42,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:45:42,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:45:42,772 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 210 [2022-10-17 10:45:42,782 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 192 transitions, 405 flow. Second operand has 2 states, 2 states have (on average 183.0) internal successors, (366), 2 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:45:42,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:45:42,782 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 210 [2022-10-17 10:45:42,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:45:43,241 INFO L130 PetriNetUnfolder]: 51/864 cut-off events. [2022-10-17 10:45:43,241 INFO L131 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2022-10-17 10:45:43,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1009 conditions, 864 events. 51/864 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5466 event pairs, 51 based on Foata normal form. 19/727 useless extension candidates. Maximal degree in co-relation 859. Up to 96 conditions per place. [2022-10-17 10:45:43,260 INFO L137 encePairwiseOnDemand]: 196/210 looper letters, 11 selfloop transitions, 0 changer transitions 0/176 dead transitions. [2022-10-17 10:45:43,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 176 transitions, 395 flow [2022-10-17 10:45:43,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:45:43,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-10-17 10:45:43,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 389 transitions. [2022-10-17 10:45:43,286 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9261904761904762 [2022-10-17 10:45:43,290 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 389 transitions. [2022-10-17 10:45:43,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 389 transitions. [2022-10-17 10:45:43,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:45:43,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 389 transitions. [2022-10-17 10:45:43,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 194.5) internal successors, (389), 2 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:45:43,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 210.0) internal successors, (630), 3 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:45:43,310 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 210.0) internal successors, (630), 3 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:45:43,312 INFO L175 Difference]: Start difference. First operand has 203 places, 192 transitions, 405 flow. Second operand 2 states and 389 transitions. [2022-10-17 10:45:43,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 176 transitions, 395 flow [2022-10-17 10:45:43,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 176 transitions, 382 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-10-17 10:45:43,325 INFO L231 Difference]: Finished difference. Result has 183 places, 176 transitions, 360 flow [2022-10-17 10:45:43,328 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=360, PETRI_PLACES=183, PETRI_TRANSITIONS=176} [2022-10-17 10:45:43,332 INFO L287 CegarLoopForPetriNet]: 203 programPoint places, -20 predicate places. [2022-10-17 10:45:43,332 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 176 transitions, 360 flow [2022-10-17 10:45:43,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 183.0) internal successors, (366), 2 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:45:43,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:45:43,334 INFO L208 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] [2022-10-17 10:45:43,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:45:43,334 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting writerErr3ASSERT_VIOLATIONDATA_RACE === [readerErr0ASSERT_VIOLATIONDATA_RACE, readerErr1ASSERT_VIOLATIONDATA_RACE, readerErr2ASSERT_VIOLATIONDATA_RACE, readerErr3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2022-10-17 10:45:43,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:45:43,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1212378925, now seen corresponding path program 1 times [2022-10-17 10:45:43,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:45:43,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225655128] [2022-10-17 10:45:43,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:45:43,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:45:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:45:43,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:45:43,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:45:43,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225655128] [2022-10-17 10:45:43,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225655128] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:45:43,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:45:43,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:45:43,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530851617] [2022-10-17 10:45:43,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:45:43,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:45:43,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:45:43,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:45:43,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:45:43,553 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 210 [2022-10-17 10:45:43,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 176 transitions, 360 flow. Second operand has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:45:43,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:45:43,556 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 210 [2022-10-17 10:45:43,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:45:48,111 INFO L130 PetriNetUnfolder]: 8850/24455 cut-off events. [2022-10-17 10:45:48,111 INFO L131 PetriNetUnfolder]: For 368/368 co-relation queries the response was YES. [2022-10-17 10:45:48,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37721 conditions, 24455 events. 8850/24455 cut-off events. For 368/368 co-relation queries the response was YES. Maximal size of possible extension queue 921. Compared 285423 event pairs, 6197 based on Foata normal form. 0/18888 useless extension candidates. Maximal degree in co-relation 37718. Up to 10013 conditions per place. [2022-10-17 10:45:48,450 INFO L137 encePairwiseOnDemand]: 201/210 looper letters, 46 selfloop transitions, 8 changer transitions 0/199 dead transitions. [2022-10-17 10:45:48,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 199 transitions, 518 flow [2022-10-17 10:45:48,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:45:48,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:45:48,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 541 transitions. [2022-10-17 10:45:48,454 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8587301587301587 [2022-10-17 10:45:48,454 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 541 transitions. [2022-10-17 10:45:48,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 541 transitions. [2022-10-17 10:45:48,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:45:48,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 541 transitions. [2022-10-17 10:45:48,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:45:48,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:45:48,461 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:45:48,461 INFO L175 Difference]: Start difference. First operand has 183 places, 176 transitions, 360 flow. Second operand 3 states and 541 transitions. [2022-10-17 10:45:48,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 199 transitions, 518 flow [2022-10-17 10:45:48,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 199 transitions, 518 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-10-17 10:45:48,468 INFO L231 Difference]: Finished difference. Result has 187 places, 183 transitions, 422 flow [2022-10-17 10:45:48,468 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=422, PETRI_PLACES=187, PETRI_TRANSITIONS=183} [2022-10-17 10:45:48,469 INFO L287 CegarLoopForPetriNet]: 203 programPoint places, -16 predicate places. [2022-10-17 10:45:48,470 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 183 transitions, 422 flow [2022-10-17 10:45:48,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:45:48,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:45:48,471 INFO L208 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] [2022-10-17 10:45:48,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:45:48,471 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr3ASSERT_VIOLATIONDATA_RACE === [readerErr0ASSERT_VIOLATIONDATA_RACE, readerErr1ASSERT_VIOLATIONDATA_RACE, readerErr2ASSERT_VIOLATIONDATA_RACE, readerErr3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2022-10-17 10:45:48,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:45:48,473 INFO L85 PathProgramCache]: Analyzing trace with hash 875355591, now seen corresponding path program 1 times [2022-10-17 10:45:48,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:45:48,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403313174] [2022-10-17 10:45:48,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:45:48,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:45:48,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:45:48,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:45:48,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:45:48,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403313174] [2022-10-17 10:45:48,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403313174] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:45:48,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:45:48,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:45:48,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106293769] [2022-10-17 10:45:48,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:45:48,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:45:48,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:45:48,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:45:48,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:45:48,541 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 210 [2022-10-17 10:45:48,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 183 transitions, 422 flow. Second operand has 3 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:45:48,543 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:45:48,543 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 210 [2022-10-17 10:45:48,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:45:53,970 INFO L130 PetriNetUnfolder]: 9634/34890 cut-off events. [2022-10-17 10:45:53,970 INFO L131 PetriNetUnfolder]: For 7356/8144 co-relation queries the response was YES. [2022-10-17 10:45:54,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57010 conditions, 34890 events. 9634/34890 cut-off events. For 7356/8144 co-relation queries the response was YES. Maximal size of possible extension queue 1334. Compared 476538 event pairs, 3650 based on Foata normal form. 19/28356 useless extension candidates. Maximal degree in co-relation 57005. Up to 7907 conditions per place. [2022-10-17 10:45:54,412 INFO L137 encePairwiseOnDemand]: 196/210 looper letters, 49 selfloop transitions, 15 changer transitions 0/212 dead transitions. [2022-10-17 10:45:54,413 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 212 transitions, 656 flow [2022-10-17 10:45:54,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:45:54,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:45:54,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 548 transitions. [2022-10-17 10:45:54,415 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8698412698412699 [2022-10-17 10:45:54,416 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 548 transitions. [2022-10-17 10:45:54,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 548 transitions. [2022-10-17 10:45:54,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:45:54,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 548 transitions. [2022-10-17 10:45:54,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:45:54,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:45:54,423 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:45:54,424 INFO L175 Difference]: Start difference. First operand has 187 places, 183 transitions, 422 flow. Second operand 3 states and 548 transitions. [2022-10-17 10:45:54,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 212 transitions, 656 flow [2022-10-17 10:45:54,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 212 transitions, 626 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 10:45:54,536 INFO L231 Difference]: Finished difference. Result has 189 places, 198 transitions, 556 flow [2022-10-17 10:45:54,537 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=556, PETRI_PLACES=189, PETRI_TRANSITIONS=198} [2022-10-17 10:45:54,539 INFO L287 CegarLoopForPetriNet]: 203 programPoint places, -14 predicate places. [2022-10-17 10:45:54,539 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 198 transitions, 556 flow [2022-10-17 10:45:54,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:45:54,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:45:54,540 INFO L208 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] [2022-10-17 10:45:54,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:45:54,541 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting writerErr4ASSERT_VIOLATIONDATA_RACE === [readerErr0ASSERT_VIOLATIONDATA_RACE, readerErr1ASSERT_VIOLATIONDATA_RACE, readerErr2ASSERT_VIOLATIONDATA_RACE, readerErr3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2022-10-17 10:45:54,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:45:54,541 INFO L85 PathProgramCache]: Analyzing trace with hash -36563742, now seen corresponding path program 1 times [2022-10-17 10:45:54,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:45:54,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599054396] [2022-10-17 10:45:54,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:45:54,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:45:54,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:45:54,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:45:54,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:45:54,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599054396] [2022-10-17 10:45:54,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599054396] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:45:54,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:45:54,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:45:54,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245753947] [2022-10-17 10:45:54,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:45:54,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:45:54,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:45:54,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:45:54,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:45:54,648 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 210 [2022-10-17 10:45:54,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 198 transitions, 556 flow. Second operand has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:45:54,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:45:54,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 210 [2022-10-17 10:45:54,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:45:57,659 INFO L130 PetriNetUnfolder]: 5215/21538 cut-off events. [2022-10-17 10:45:57,659 INFO L131 PetriNetUnfolder]: For 5079/7796 co-relation queries the response was YES. [2022-10-17 10:45:57,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36873 conditions, 21538 events. 5215/21538 cut-off events. For 5079/7796 co-relation queries the response was YES. Maximal size of possible extension queue 912. Compared 289366 event pairs, 2031 based on Foata normal form. 26/17715 useless extension candidates. Maximal degree in co-relation 36867. Up to 3991 conditions per place. [2022-10-17 10:45:57,974 INFO L137 encePairwiseOnDemand]: 202/210 looper letters, 23 selfloop transitions, 7 changer transitions 0/209 dead transitions. [2022-10-17 10:45:57,974 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 209 transitions, 642 flow [2022-10-17 10:45:57,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:45:57,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:45:57,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 553 transitions. [2022-10-17 10:45:57,977 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8777777777777778 [2022-10-17 10:45:57,977 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 553 transitions. [2022-10-17 10:45:57,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 553 transitions. [2022-10-17 10:45:57,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:45:57,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 553 transitions. [2022-10-17 10:45:57,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:45:57,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:45:57,983 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:45:57,983 INFO L175 Difference]: Start difference. First operand has 189 places, 198 transitions, 556 flow. Second operand 3 states and 553 transitions. [2022-10-17 10:45:57,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 209 transitions, 642 flow [2022-10-17 10:45:57,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 209 transitions, 612 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 10:45:58,001 INFO L231 Difference]: Finished difference. Result has 191 places, 204 transitions, 580 flow [2022-10-17 10:45:58,002 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=580, PETRI_PLACES=191, PETRI_TRANSITIONS=204} [2022-10-17 10:45:58,003 INFO L287 CegarLoopForPetriNet]: 203 programPoint places, -12 predicate places. [2022-10-17 10:45:58,003 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 204 transitions, 580 flow [2022-10-17 10:45:58,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:45:58,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:45:58,004 INFO L208 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] [2022-10-17 10:45:58,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:45:58,005 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting writerErr3ASSERT_VIOLATIONDATA_RACE === [readerErr0ASSERT_VIOLATIONDATA_RACE, readerErr1ASSERT_VIOLATIONDATA_RACE, readerErr2ASSERT_VIOLATIONDATA_RACE, readerErr3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2022-10-17 10:45:58,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:45:58,005 INFO L85 PathProgramCache]: Analyzing trace with hash 160958644, now seen corresponding path program 1 times [2022-10-17 10:45:58,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:45:58,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425793396] [2022-10-17 10:45:58,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:45:58,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:45:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:45:58,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:45:58,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:45:58,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425793396] [2022-10-17 10:45:58,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425793396] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:45:58,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:45:58,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:45:58,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745385677] [2022-10-17 10:45:58,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:45:58,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:45:58,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:45:58,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:45:58,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:45:58,342 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 210 [2022-10-17 10:45:58,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 204 transitions, 580 flow. Second operand has 5 states, 5 states have (on average 175.2) internal successors, (876), 5 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:45:58,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:45:58,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 210 [2022-10-17 10:45:58,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:46:06,462 INFO L130 PetriNetUnfolder]: 14390/61555 cut-off events. [2022-10-17 10:46:06,462 INFO L131 PetriNetUnfolder]: For 10308/13436 co-relation queries the response was YES. [2022-10-17 10:46:07,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101272 conditions, 61555 events. 14390/61555 cut-off events. For 10308/13436 co-relation queries the response was YES. Maximal size of possible extension queue 2267. Compared 959443 event pairs, 3586 based on Foata normal form. 131/50257 useless extension candidates. Maximal degree in co-relation 101265. Up to 8673 conditions per place. [2022-10-17 10:46:07,690 INFO L137 encePairwiseOnDemand]: 200/210 looper letters, 37 selfloop transitions, 17 changer transitions 0/236 dead transitions. [2022-10-17 10:46:07,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 236 transitions, 789 flow [2022-10-17 10:46:07,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:46:07,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-10-17 10:46:07,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 921 transitions. [2022-10-17 10:46:07,700 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8771428571428571 [2022-10-17 10:46:07,701 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 921 transitions. [2022-10-17 10:46:07,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 921 transitions. [2022-10-17 10:46:07,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:46:07,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 921 transitions. [2022-10-17 10:46:07,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 184.2) internal successors, (921), 5 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:46:07,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:46:07,710 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:46:07,710 INFO L175 Difference]: Start difference. First operand has 191 places, 204 transitions, 580 flow. Second operand 5 states and 921 transitions. [2022-10-17 10:46:07,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 236 transitions, 789 flow [2022-10-17 10:46:07,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 236 transitions, 771 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 10:46:07,786 INFO L231 Difference]: Finished difference. Result has 196 places, 218 transitions, 689 flow [2022-10-17 10:46:07,787 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=689, PETRI_PLACES=196, PETRI_TRANSITIONS=218} [2022-10-17 10:46:07,790 INFO L287 CegarLoopForPetriNet]: 203 programPoint places, -7 predicate places. [2022-10-17 10:46:07,790 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 218 transitions, 689 flow [2022-10-17 10:46:07,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 175.2) internal successors, (876), 5 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:46:07,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:46:07,792 INFO L208 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] [2022-10-17 10:46:07,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:46:07,792 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting writerErr3ASSERT_VIOLATIONDATA_RACE === [readerErr0ASSERT_VIOLATIONDATA_RACE, readerErr1ASSERT_VIOLATIONDATA_RACE, readerErr2ASSERT_VIOLATIONDATA_RACE, readerErr3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2022-10-17 10:46:07,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:46:07,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1699067936, now seen corresponding path program 2 times [2022-10-17 10:46:07,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:46:07,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446826265] [2022-10-17 10:46:07,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:46:07,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:46:07,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:46:07,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:46:07,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:46:07,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446826265] [2022-10-17 10:46:07,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446826265] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:46:07,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:46:07,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:46:07,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364061113] [2022-10-17 10:46:07,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:46:07,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:46:07,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:46:07,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:46:07,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:46:07,943 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 210 [2022-10-17 10:46:07,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 218 transitions, 689 flow. Second operand has 4 states, 4 states have (on average 180.25) internal successors, (721), 4 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:46:07,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:46:07,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 210 [2022-10-17 10:46:07,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:46:10,111 INFO L130 PetriNetUnfolder]: 2546/17795 cut-off events. [2022-10-17 10:46:10,111 INFO L131 PetriNetUnfolder]: For 4132/4910 co-relation queries the response was YES. [2022-10-17 10:46:10,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28094 conditions, 17795 events. 2546/17795 cut-off events. For 4132/4910 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 249992 event pairs, 770 based on Foata normal form. 123/14512 useless extension candidates. Maximal degree in co-relation 28085. Up to 2594 conditions per place. [2022-10-17 10:46:10,538 INFO L137 encePairwiseOnDemand]: 203/210 looper letters, 18 selfloop transitions, 8 changer transitions 0/213 dead transitions. [2022-10-17 10:46:10,538 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 213 transitions, 699 flow [2022-10-17 10:46:10,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:46:10,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-10-17 10:46:10,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 739 transitions. [2022-10-17 10:46:10,541 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8797619047619047 [2022-10-17 10:46:10,541 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 739 transitions. [2022-10-17 10:46:10,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 739 transitions. [2022-10-17 10:46:10,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:46:10,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 739 transitions. [2022-10-17 10:46:10,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 184.75) internal successors, (739), 4 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:46:10,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 210.0) internal successors, (1050), 5 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:46:10,549 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 210.0) internal successors, (1050), 5 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:46:10,549 INFO L175 Difference]: Start difference. First operand has 196 places, 218 transitions, 689 flow. Second operand 4 states and 739 transitions. [2022-10-17 10:46:10,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 213 transitions, 699 flow [2022-10-17 10:46:10,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 213 transitions, 685 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-10-17 10:46:10,560 INFO L231 Difference]: Finished difference. Result has 198 places, 208 transitions, 633 flow [2022-10-17 10:46:10,560 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=617, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=633, PETRI_PLACES=198, PETRI_TRANSITIONS=208} [2022-10-17 10:46:10,561 INFO L287 CegarLoopForPetriNet]: 203 programPoint places, -5 predicate places. [2022-10-17 10:46:10,561 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 208 transitions, 633 flow [2022-10-17 10:46:10,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 180.25) internal successors, (721), 4 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:46:10,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:46:10,562 INFO L208 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] [2022-10-17 10:46:10,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:46:10,563 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting readerErr4ASSERT_VIOLATIONDATA_RACE === [readerErr0ASSERT_VIOLATIONDATA_RACE, readerErr1ASSERT_VIOLATIONDATA_RACE, readerErr2ASSERT_VIOLATIONDATA_RACE, readerErr3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2022-10-17 10:46:10,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:46:10,563 INFO L85 PathProgramCache]: Analyzing trace with hash 330204001, now seen corresponding path program 1 times [2022-10-17 10:46:10,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:46:10,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210412763] [2022-10-17 10:46:10,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:46:10,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:46:10,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:46:10,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:46:10,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:46:10,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210412763] [2022-10-17 10:46:10,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210412763] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:46:10,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:46:10,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:46:10,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145702692] [2022-10-17 10:46:10,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:46:10,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:46:10,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:46:10,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:46:10,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:46:10,603 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 210 [2022-10-17 10:46:10,604 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 208 transitions, 633 flow. Second operand has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:46:10,604 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:46:10,604 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 210 [2022-10-17 10:46:10,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand