./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_19-nested_nr.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_9dca8915-d1d2-4184-ad05-33568abf0e99/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dca8915-d1d2-4184-ad05-33568abf0e99/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_9dca8915-d1d2-4184-ad05-33568abf0e99/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dca8915-d1d2-4184-ad05-33568abf0e99/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_19-nested_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dca8915-d1d2-4184-ad05-33568abf0e99/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_9dca8915-d1d2-4184-ad05-33568abf0e99/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 12bbf3623faa1d8cb0ae406b9406d293839854c20d2fb62622ec841c419248fb --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:23:29,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:23:29,719 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:23:29,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:23:29,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:23:29,764 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:23:29,765 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:23:29,769 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:23:29,776 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:23:29,779 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:23:29,780 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:23:29,781 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:23:29,782 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:23:29,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:23:29,784 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:23:29,785 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:23:29,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:23:29,789 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:23:29,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:23:29,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:23:29,803 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:23:29,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:23:29,813 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:23:29,814 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:23:29,822 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:23:29,822 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:23:29,823 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:23:29,825 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:23:29,825 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:23:29,826 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:23:29,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:23:29,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:23:29,830 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:23:29,831 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:23:29,833 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:23:29,833 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:23:29,834 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:23:29,834 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:23:29,835 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:23:29,836 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:23:29,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:23:29,837 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dca8915-d1d2-4184-ad05-33568abf0e99/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-18 20:23:29,880 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:23:29,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:23:29,881 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:23:29,881 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:23:29,882 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:23:29,883 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:23:29,883 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:23:29,884 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:23:29,884 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:23:29,884 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:23:29,885 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:23:29,886 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:23:29,886 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:23:29,886 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:23:29,886 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:23:29,887 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:23:29,887 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:23:29,887 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:23:29,887 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-18 20:23:29,888 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:23:29,888 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:23:29,888 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:23:29,889 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:23:29,889 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:23:29,889 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:23:29,889 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:23:29,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:23:29,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:23:29,890 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:23:29,890 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:23:29,891 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:23:29,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:23:29,891 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:23:29,892 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:23:29,892 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:23:29,892 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_9dca8915-d1d2-4184-ad05-33568abf0e99/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dca8915-d1d2-4184-ad05-33568abf0e99/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12bbf3623faa1d8cb0ae406b9406d293839854c20d2fb62622ec841c419248fb [2022-11-18 20:23:30,233 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:23:30,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:23:30,260 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:23:30,262 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:23:30,262 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:23:30,264 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dca8915-d1d2-4184-ad05-33568abf0e99/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/09-regions_19-nested_nr.i [2022-11-18 20:23:30,344 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dca8915-d1d2-4184-ad05-33568abf0e99/bin/uautomizer-TMbwUNV5ro/data/129c385bf/f1537925259c465f8e70e11f928df3a3/FLAG7f9fe7406 [2022-11-18 20:23:30,924 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:23:30,924 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dca8915-d1d2-4184-ad05-33568abf0e99/sv-benchmarks/c/goblint-regression/09-regions_19-nested_nr.i [2022-11-18 20:23:30,940 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dca8915-d1d2-4184-ad05-33568abf0e99/bin/uautomizer-TMbwUNV5ro/data/129c385bf/f1537925259c465f8e70e11f928df3a3/FLAG7f9fe7406 [2022-11-18 20:23:31,195 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dca8915-d1d2-4184-ad05-33568abf0e99/bin/uautomizer-TMbwUNV5ro/data/129c385bf/f1537925259c465f8e70e11f928df3a3 [2022-11-18 20:23:31,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:23:31,201 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:23:31,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:23:31,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:23:31,208 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:23:31,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:23:31" (1/1) ... [2022-11-18 20:23:31,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ab9cc63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:31, skipping insertion in model container [2022-11-18 20:23:31,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:23:31" (1/1) ... [2022-11-18 20:23:31,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:23:31,281 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:23:31,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:23:31,935 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:23:32,011 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:23:32,107 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:23:32,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:32 WrapperNode [2022-11-18 20:23:32,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:23:32,108 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:23:32,123 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:23:32,123 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:23:32,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:32" (1/1) ... [2022-11-18 20:23:32,169 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:32" (1/1) ... [2022-11-18 20:23:32,237 INFO L138 Inliner]: procedures = 370, calls = 29, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 226 [2022-11-18 20:23:32,251 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:23:32,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:23:32,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:23:32,252 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:23:32,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:32" (1/1) ... [2022-11-18 20:23:32,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:32" (1/1) ... [2022-11-18 20:23:32,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:32" (1/1) ... [2022-11-18 20:23:32,277 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:32" (1/1) ... [2022-11-18 20:23:32,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:32" (1/1) ... [2022-11-18 20:23:32,315 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:32" (1/1) ... [2022-11-18 20:23:32,318 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:32" (1/1) ... [2022-11-18 20:23:32,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:32" (1/1) ... [2022-11-18 20:23:32,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:23:32,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:23:32,325 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:23:32,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:23:32,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:32" (1/1) ... [2022-11-18 20:23:32,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:23:32,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dca8915-d1d2-4184-ad05-33568abf0e99/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:23:32,385 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dca8915-d1d2-4184-ad05-33568abf0e99/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:23:32,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dca8915-d1d2-4184-ad05-33568abf0e99/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:23:32,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:23:32,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 20:23:32,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:23:32,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:23:32,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:23:32,438 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 20:23:32,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:23:32,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:23:32,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 20:23:32,438 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-18 20:23:32,439 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-18 20:23:32,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:23:32,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:23:32,440 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:23:32,680 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:23:32,682 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:23:33,321 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:23:33,335 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:23:33,339 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 20:23:33,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:23:33 BoogieIcfgContainer [2022-11-18 20:23:33,342 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:23:33,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:23:33,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:23:33,349 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:23:33,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:23:31" (1/3) ... [2022-11-18 20:23:33,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@552814d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:23:33, skipping insertion in model container [2022-11-18 20:23:33,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:32" (2/3) ... [2022-11-18 20:23:33,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@552814d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:23:33, skipping insertion in model container [2022-11-18 20:23:33,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:23:33" (3/3) ... [2022-11-18 20:23:33,353 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_19-nested_nr.i [2022-11-18 20:23:33,363 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:23:33,373 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:23:33,373 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-18 20:23:33,373 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:23:33,492 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 20:23:33,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 273 places, 273 transitions, 551 flow [2022-11-18 20:23:33,672 INFO L130 PetriNetUnfolder]: 4/272 cut-off events. [2022-11-18 20:23:33,673 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:23:33,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 272 events. 4/272 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 113 event pairs, 0 based on Foata normal form. 0/250 useless extension candidates. Maximal degree in co-relation 146. Up to 2 conditions per place. [2022-11-18 20:23:33,678 INFO L82 GeneralOperation]: Start removeDead. Operand has 273 places, 273 transitions, 551 flow [2022-11-18 20:23:33,687 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 272 places, 272 transitions, 547 flow [2022-11-18 20:23:33,707 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:23:33,714 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;@1f6b75e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:23:33,714 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-18 20:23:33,731 INFO L130 PetriNetUnfolder]: 3/47 cut-off events. [2022-11-18 20:23:33,732 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:23:33,732 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:33,733 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] [2022-11-18 20:23:33,733 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 20:23:33,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:33,740 INFO L85 PathProgramCache]: Analyzing trace with hash -400245388, now seen corresponding path program 1 times [2022-11-18 20:23:33,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:33,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466811] [2022-11-18 20:23:33,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:33,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:33,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:34,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:23:34,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:34,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466811] [2022-11-18 20:23:34,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466811] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:23:34,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:23:34,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:23:34,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192165978] [2022-11-18 20:23:34,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:23:34,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:23:34,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:34,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:23:34,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:23:34,114 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 273 [2022-11-18 20:23:34,122 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 272 transitions, 547 flow. Second operand has 2 states, 2 states have (on average 269.5) internal successors, (539), 2 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:34,122 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:34,123 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 273 [2022-11-18 20:23:34,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:23:34,210 INFO L130 PetriNetUnfolder]: 1/269 cut-off events. [2022-11-18 20:23:34,210 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 20:23:34,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 269 events. 1/269 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 111 event pairs, 0 based on Foata normal form. 3/251 useless extension candidates. Maximal degree in co-relation 144. Up to 2 conditions per place. [2022-11-18 20:23:34,213 INFO L137 encePairwiseOnDemand]: 270/273 looper letters, 1 selfloop transitions, 0 changer transitions 1/269 dead transitions. [2022-11-18 20:23:34,213 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 269 transitions, 543 flow [2022-11-18 20:23:34,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:23:34,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 20:23:34,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 542 transitions. [2022-11-18 20:23:34,236 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9926739926739927 [2022-11-18 20:23:34,236 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 542 transitions. [2022-11-18 20:23:34,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 542 transitions. [2022-11-18 20:23:34,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:23:34,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 542 transitions. [2022-11-18 20:23:34,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 271.0) internal successors, (542), 2 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:34,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:34,261 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:34,263 INFO L175 Difference]: Start difference. First operand has 272 places, 272 transitions, 547 flow. Second operand 2 states and 542 transitions. [2022-11-18 20:23:34,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 269 transitions, 543 flow [2022-11-18 20:23:34,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 269 transitions, 542 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:23:34,278 INFO L231 Difference]: Finished difference. Result has 272 places, 268 transitions, 538 flow [2022-11-18 20:23:34,281 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=538, PETRI_PLACES=272, PETRI_TRANSITIONS=268} [2022-11-18 20:23:34,285 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 0 predicate places. [2022-11-18 20:23:34,286 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 268 transitions, 538 flow [2022-11-18 20:23:34,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 269.5) internal successors, (539), 2 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:34,287 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:34,287 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] [2022-11-18 20:23:34,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:23:34,288 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 20:23:34,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:34,290 INFO L85 PathProgramCache]: Analyzing trace with hash 561368629, now seen corresponding path program 1 times [2022-11-18 20:23:34,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:34,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291453872] [2022-11-18 20:23:34,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:34,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:34,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:34,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:23:34,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:34,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291453872] [2022-11-18 20:23:34,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291453872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:23:34,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:23:34,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:23:34,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212418511] [2022-11-18 20:23:34,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:23:34,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:23:34,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:34,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:23:34,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:23:34,495 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 273 [2022-11-18 20:23:34,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 268 transitions, 538 flow. Second operand has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:34,497 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:34,497 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 273 [2022-11-18 20:23:34,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:23:34,586 INFO L130 PetriNetUnfolder]: 1/272 cut-off events. [2022-11-18 20:23:34,586 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:23:34,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 272 events. 1/272 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 108 event pairs, 0 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 286. Up to 9 conditions per place. [2022-11-18 20:23:34,587 INFO L137 encePairwiseOnDemand]: 270/273 looper letters, 10 selfloop transitions, 2 changer transitions 0/272 dead transitions. [2022-11-18 20:23:34,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 272 transitions, 570 flow [2022-11-18 20:23:34,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:23:34,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:23:34,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 799 transitions. [2022-11-18 20:23:34,591 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9755799755799756 [2022-11-18 20:23:34,591 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 799 transitions. [2022-11-18 20:23:34,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 799 transitions. [2022-11-18 20:23:34,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:23:34,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 799 transitions. [2022-11-18 20:23:34,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:34,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:34,599 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:34,599 INFO L175 Difference]: Start difference. First operand has 272 places, 268 transitions, 538 flow. Second operand 3 states and 799 transitions. [2022-11-18 20:23:34,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 272 transitions, 570 flow [2022-11-18 20:23:34,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 272 transitions, 570 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:23:34,607 INFO L231 Difference]: Finished difference. Result has 274 places, 269 transitions, 550 flow [2022-11-18 20:23:34,608 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=550, PETRI_PLACES=274, PETRI_TRANSITIONS=269} [2022-11-18 20:23:34,609 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 2 predicate places. [2022-11-18 20:23:34,609 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 269 transitions, 550 flow [2022-11-18 20:23:34,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:34,610 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:34,611 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:23:34,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:23:34,611 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 20:23:34,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:34,612 INFO L85 PathProgramCache]: Analyzing trace with hash -282043731, now seen corresponding path program 1 times [2022-11-18 20:23:34,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:34,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656850591] [2022-11-18 20:23:34,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:34,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:34,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:23:34,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:34,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656850591] [2022-11-18 20:23:34,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656850591] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:23:34,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455509837] [2022-11-18 20:23:34,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:34,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:23:34,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dca8915-d1d2-4184-ad05-33568abf0e99/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:23:34,811 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dca8915-d1d2-4184-ad05-33568abf0e99/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:23:34,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dca8915-d1d2-4184-ad05-33568abf0e99/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:23:34,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:34,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:23:34,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:23:35,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:23:35,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:23:35,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:23:35,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455509837] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:23:35,138 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:23:35,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 20:23:35,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422665285] [2022-11-18 20:23:35,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:23:35,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:23:35,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:35,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:23:35,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:23:35,147 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 273 [2022-11-18 20:23:35,151 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 269 transitions, 550 flow. Second operand has 10 states, 10 states have (on average 263.0) internal successors, (2630), 10 states have internal predecessors, (2630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:35,151 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:35,151 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 273 [2022-11-18 20:23:35,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:23:35,306 INFO L130 PetriNetUnfolder]: 1/279 cut-off events. [2022-11-18 20:23:35,306 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 20:23:35,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 279 events. 1/279 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 102 event pairs, 0 based on Foata normal form. 2/262 useless extension candidates. Maximal degree in co-relation 307. Up to 6 conditions per place. [2022-11-18 20:23:35,307 INFO L137 encePairwiseOnDemand]: 267/273 looper letters, 11 selfloop transitions, 9 changer transitions 0/279 dead transitions. [2022-11-18 20:23:35,308 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 279 transitions, 612 flow [2022-11-18 20:23:35,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:23:35,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:23:35,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2371 transitions. [2022-11-18 20:23:35,313 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.964997964997965 [2022-11-18 20:23:35,313 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2371 transitions. [2022-11-18 20:23:35,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2371 transitions. [2022-11-18 20:23:35,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:23:35,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2371 transitions. [2022-11-18 20:23:35,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 263.44444444444446) internal successors, (2371), 9 states have internal predecessors, (2371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:35,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:35,328 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:35,328 INFO L175 Difference]: Start difference. First operand has 274 places, 269 transitions, 550 flow. Second operand 9 states and 2371 transitions. [2022-11-18 20:23:35,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 279 transitions, 612 flow [2022-11-18 20:23:35,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 279 transitions, 610 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:23:35,334 INFO L231 Difference]: Finished difference. Result has 284 places, 275 transitions, 598 flow [2022-11-18 20:23:35,335 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=598, PETRI_PLACES=284, PETRI_TRANSITIONS=275} [2022-11-18 20:23:35,338 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 12 predicate places. [2022-11-18 20:23:35,338 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 275 transitions, 598 flow [2022-11-18 20:23:35,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 263.0) internal successors, (2630), 10 states have internal predecessors, (2630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:35,340 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:35,341 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:23:35,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dca8915-d1d2-4184-ad05-33568abf0e99/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:23:35,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dca8915-d1d2-4184-ad05-33568abf0e99/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:23:35,548 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 20:23:35,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:35,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1558040659, now seen corresponding path program 2 times [2022-11-18 20:23:35,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:35,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488347190] [2022-11-18 20:23:35,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:35,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:35,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:35,835 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:23:35,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:35,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488347190] [2022-11-18 20:23:35,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488347190] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:23:35,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291171160] [2022-11-18 20:23:35,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:23:35,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:23:35,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dca8915-d1d2-4184-ad05-33568abf0e99/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:23:35,838 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dca8915-d1d2-4184-ad05-33568abf0e99/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:23:35,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dca8915-d1d2-4184-ad05-33568abf0e99/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:23:35,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:23:35,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:23:36,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 20:23:36,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:23:36,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:23:36,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:23:36,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 20:23:36,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:23:36,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:23:36,153 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:23:36,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-18 20:23:36,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:23:36,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:23:36,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:23:36,227 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:23:36,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-18 20:23:36,264 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 20:23:36,264 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:23:36,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291171160] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:23:36,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:23:36,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2022-11-18 20:23:36,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824685112] [2022-11-18 20:23:36,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:23:36,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:23:36,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:36,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:23:36,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:23:36,269 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 273 [2022-11-18 20:23:36,271 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 275 transitions, 598 flow. Second operand has 8 states, 8 states have (on average 144.375) internal successors, (1155), 8 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:36,271 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:36,271 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 273 [2022-11-18 20:23:36,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:23:37,155 INFO L130 PetriNetUnfolder]: 649/2115 cut-off events. [2022-11-18 20:23:37,155 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-18 20:23:37,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3570 conditions, 2115 events. 649/2115 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 11520 event pairs, 648 based on Foata normal form. 0/1865 useless extension candidates. Maximal degree in co-relation 3563. Up to 1405 conditions per place. [2022-11-18 20:23:37,175 INFO L137 encePairwiseOnDemand]: 254/273 looper letters, 108 selfloop transitions, 17 changer transitions 0/273 dead transitions. [2022-11-18 20:23:37,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 273 transitions, 844 flow [2022-11-18 20:23:37,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:23:37,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:23:37,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1414 transitions. [2022-11-18 20:23:37,180 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5754985754985755 [2022-11-18 20:23:37,180 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1414 transitions. [2022-11-18 20:23:37,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1414 transitions. [2022-11-18 20:23:37,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:23:37,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1414 transitions. [2022-11-18 20:23:37,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 157.11111111111111) internal successors, (1414), 9 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:37,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:37,191 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:37,191 INFO L175 Difference]: Start difference. First operand has 284 places, 275 transitions, 598 flow. Second operand 9 states and 1414 transitions. [2022-11-18 20:23:37,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 273 transitions, 844 flow [2022-11-18 20:23:37,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 273 transitions, 838 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-18 20:23:37,198 INFO L231 Difference]: Finished difference. Result has 289 places, 273 transitions, 622 flow [2022-11-18 20:23:37,199 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=622, PETRI_PLACES=289, PETRI_TRANSITIONS=273} [2022-11-18 20:23:37,200 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 17 predicate places. [2022-11-18 20:23:37,200 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 273 transitions, 622 flow [2022-11-18 20:23:37,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 144.375) internal successors, (1155), 8 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:37,201 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:37,202 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:23:37,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dca8915-d1d2-4184-ad05-33568abf0e99/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:23:37,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dca8915-d1d2-4184-ad05-33568abf0e99/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:23:37,408 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 20:23:37,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:37,408 INFO L85 PathProgramCache]: Analyzing trace with hash -446848116, now seen corresponding path program 1 times [2022-11-18 20:23:37,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:37,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867308665] [2022-11-18 20:23:37,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:37,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:37,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:37,711 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:23:37,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:37,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867308665] [2022-11-18 20:23:37,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867308665] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:23:37,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763722947] [2022-11-18 20:23:37,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:37,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:23:37,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dca8915-d1d2-4184-ad05-33568abf0e99/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:23:37,714 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dca8915-d1d2-4184-ad05-33568abf0e99/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:23:37,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dca8915-d1d2-4184-ad05-33568abf0e99/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:23:37,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:37,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:23:37,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:23:37,933 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:23:37,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:23:38,047 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:23:38,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763722947] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:23:38,048 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:23:38,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-18 20:23:38,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156987477] [2022-11-18 20:23:38,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:23:38,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:23:38,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:38,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:23:38,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:23:38,056 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 273 [2022-11-18 20:23:38,061 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 273 transitions, 622 flow. Second operand has 18 states, 18 states have (on average 263.22222222222223) internal successors, (4738), 18 states have internal predecessors, (4738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:38,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:38,062 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 273 [2022-11-18 20:23:38,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:23:38,346 INFO L130 PetriNetUnfolder]: 1/297 cut-off events. [2022-11-18 20:23:38,346 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-18 20:23:38,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 410 conditions, 297 events. 1/297 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 102 event pairs, 0 based on Foata normal form. 4/284 useless extension candidates. Maximal degree in co-relation 402. Up to 11 conditions per place. [2022-11-18 20:23:38,347 INFO L137 encePairwiseOnDemand]: 267/273 looper letters, 19 selfloop transitions, 21 changer transitions 0/297 dead transitions. [2022-11-18 20:23:38,348 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 297 transitions, 802 flow [2022-11-18 20:23:38,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:23:38,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 20:23:38,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5525 transitions. [2022-11-18 20:23:38,359 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.963718820861678 [2022-11-18 20:23:38,359 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5525 transitions. [2022-11-18 20:23:38,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5525 transitions. [2022-11-18 20:23:38,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:23:38,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5525 transitions. [2022-11-18 20:23:38,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 263.0952380952381) internal successors, (5525), 21 states have internal predecessors, (5525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:38,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 273.0) internal successors, (6006), 22 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:38,387 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 273.0) internal successors, (6006), 22 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:38,388 INFO L175 Difference]: Start difference. First operand has 289 places, 273 transitions, 622 flow. Second operand 21 states and 5525 transitions. [2022-11-18 20:23:38,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 297 transitions, 802 flow [2022-11-18 20:23:38,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 297 transitions, 768 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-18 20:23:38,397 INFO L231 Difference]: Finished difference. Result has 306 places, 286 transitions, 718 flow [2022-11-18 20:23:38,398 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=718, PETRI_PLACES=306, PETRI_TRANSITIONS=286} [2022-11-18 20:23:38,401 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 34 predicate places. [2022-11-18 20:23:38,401 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 286 transitions, 718 flow [2022-11-18 20:23:38,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 263.22222222222223) internal successors, (4738), 18 states have internal predecessors, (4738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:38,403 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:38,404 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:23:38,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dca8915-d1d2-4184-ad05-33568abf0e99/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-18 20:23:38,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dca8915-d1d2-4184-ad05-33568abf0e99/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:23:38,607 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 20:23:38,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:38,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1811189132, now seen corresponding path program 2 times [2022-11-18 20:23:38,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:38,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023995482] [2022-11-18 20:23:38,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:38,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:38,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:39,059 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:23:39,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:39,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023995482] [2022-11-18 20:23:39,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023995482] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:23:39,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597264414] [2022-11-18 20:23:39,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:23:39,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:23:39,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dca8915-d1d2-4184-ad05-33568abf0e99/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:23:39,063 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dca8915-d1d2-4184-ad05-33568abf0e99/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:23:39,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dca8915-d1d2-4184-ad05-33568abf0e99/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:23:39,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:23:39,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:23:39,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 20:23:39,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:23:39,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:23:39,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 20:23:39,270 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:23:39,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2022-11-18 20:23:39,311 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:23:39,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 46 [2022-11-18 20:23:39,349 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-18 20:23:39,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:23:39,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597264414] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:23:39,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:23:39,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 21 [2022-11-18 20:23:39,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46788733] [2022-11-18 20:23:39,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:23:39,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:23:39,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:39,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:23:39,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:23:39,353 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 273 [2022-11-18 20:23:39,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 286 transitions, 718 flow. Second operand has 6 states, 6 states have (on average 149.5) internal successors, (897), 6 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:39,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:39,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 273 [2022-11-18 20:23:39,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:23:40,098 INFO L130 PetriNetUnfolder]: 649/2133 cut-off events. [2022-11-18 20:23:40,099 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2022-11-18 20:23:40,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3645 conditions, 2133 events. 649/2133 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 11497 event pairs, 648 based on Foata normal form. 0/1885 useless extension candidates. Maximal degree in co-relation 3633. Up to 1406 conditions per place. [2022-11-18 20:23:40,112 INFO L137 encePairwiseOnDemand]: 261/273 looper letters, 109 selfloop transitions, 10 changer transitions 0/284 dead transitions. [2022-11-18 20:23:40,112 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 284 transitions, 952 flow [2022-11-18 20:23:40,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:23:40,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:23:40,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1003 transitions. [2022-11-18 20:23:40,115 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6123321123321124 [2022-11-18 20:23:40,116 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1003 transitions. [2022-11-18 20:23:40,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1003 transitions. [2022-11-18 20:23:40,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:23:40,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1003 transitions. [2022-11-18 20:23:40,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 167.16666666666666) internal successors, (1003), 6 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:40,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 273.0) internal successors, (1911), 7 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:40,123 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 273.0) internal successors, (1911), 7 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:40,123 INFO L175 Difference]: Start difference. First operand has 306 places, 286 transitions, 718 flow. Second operand 6 states and 1003 transitions. [2022-11-18 20:23:40,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 284 transitions, 952 flow [2022-11-18 20:23:40,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 284 transitions, 928 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-11-18 20:23:40,135 INFO L231 Difference]: Finished difference. Result has 303 places, 284 transitions, 710 flow [2022-11-18 20:23:40,136 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=710, PETRI_PLACES=303, PETRI_TRANSITIONS=284} [2022-11-18 20:23:40,139 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 31 predicate places. [2022-11-18 20:23:40,139 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 284 transitions, 710 flow [2022-11-18 20:23:40,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 149.5) internal successors, (897), 6 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:40,140 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:40,141 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:23:40,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dca8915-d1d2-4184-ad05-33568abf0e99/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:23:40,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dca8915-d1d2-4184-ad05-33568abf0e99/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 20:23:40,347 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 20:23:40,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:40,347 INFO L85 PathProgramCache]: Analyzing trace with hash -2075465824, now seen corresponding path program 1 times [2022-11-18 20:23:40,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:40,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850405462] [2022-11-18 20:23:40,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:40,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:40,801 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:23:40,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:40,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850405462] [2022-11-18 20:23:40,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850405462] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:23:40,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400352151] [2022-11-18 20:23:40,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:40,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:23:40,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dca8915-d1d2-4184-ad05-33568abf0e99/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:23:40,803 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dca8915-d1d2-4184-ad05-33568abf0e99/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:23:40,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dca8915-d1d2-4184-ad05-33568abf0e99/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:23:40,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:40,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 20:23:40,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:23:41,070 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:23:41,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:23:41,313 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:23:41,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400352151] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:23:41,313 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:23:41,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-18 20:23:41,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316164165] [2022-11-18 20:23:41,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:23:41,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 20:23:41,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:41,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 20:23:41,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-18 20:23:41,341 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 273 [2022-11-18 20:23:41,347 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 284 transitions, 710 flow. Second operand has 23 states, 23 states have (on average 263.39130434782606) internal successors, (6058), 23 states have internal predecessors, (6058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:41,347 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:41,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 273 [2022-11-18 20:23:41,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:23:41,772 INFO L130 PetriNetUnfolder]: 1/310 cut-off events. [2022-11-18 20:23:41,772 INFO L131 PetriNetUnfolder]: For 123/123 co-relation queries the response was YES. [2022-11-18 20:23:41,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 310 events. 1/310 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 99 event pairs, 0 based on Foata normal form. 3/298 useless extension candidates. Maximal degree in co-relation 481. Up to 16 conditions per place. [2022-11-18 20:23:41,774 INFO L137 encePairwiseOnDemand]: 267/273 looper letters, 25 selfloop transitions, 30 changer transitions 0/310 dead transitions. [2022-11-18 20:23:41,775 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 310 transitions, 960 flow [2022-11-18 20:23:41,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 20:23:41,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-18 20:23:41,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7888 transitions. [2022-11-18 20:23:41,793 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9631257631257631 [2022-11-18 20:23:41,793 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 7888 transitions. [2022-11-18 20:23:41,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 7888 transitions. [2022-11-18 20:23:41,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:23:41,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 7888 transitions. [2022-11-18 20:23:41,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 262.93333333333334) internal successors, (7888), 30 states have internal predecessors, (7888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:41,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 273.0) internal successors, (8463), 31 states have internal predecessors, (8463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:41,842 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 273.0) internal successors, (8463), 31 states have internal predecessors, (8463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:41,842 INFO L175 Difference]: Start difference. First operand has 303 places, 284 transitions, 710 flow. Second operand 30 states and 7888 transitions. [2022-11-18 20:23:41,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 310 transitions, 960 flow [2022-11-18 20:23:41,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 310 transitions, 940 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:23:41,851 INFO L231 Difference]: Finished difference. Result has 331 places, 294 transitions, 842 flow [2022-11-18 20:23:41,851 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=842, PETRI_PLACES=331, PETRI_TRANSITIONS=294} [2022-11-18 20:23:41,852 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 59 predicate places. [2022-11-18 20:23:41,853 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 294 transitions, 842 flow [2022-11-18 20:23:41,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 263.39130434782606) internal successors, (6058), 23 states have internal predecessors, (6058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:41,855 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:41,855 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:23:41,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dca8915-d1d2-4184-ad05-33568abf0e99/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:23:42,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dca8915-d1d2-4184-ad05-33568abf0e99/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 20:23:42,063 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 20:23:42,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:42,063 INFO L85 PathProgramCache]: Analyzing trace with hash -523469032, now seen corresponding path program 2 times [2022-11-18 20:23:42,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:42,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32848745] [2022-11-18 20:23:42,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:42,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:42,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:42,866 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-18 20:23:42,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:42,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32848745] [2022-11-18 20:23:42,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32848745] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:23:42,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:23:42,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:23:42,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742723127] [2022-11-18 20:23:42,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:23:42,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:23:42,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:42,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:23:42,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:23:42,872 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 273 [2022-11-18 20:23:42,874 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 294 transitions, 842 flow. Second operand has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:42,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:42,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 273 [2022-11-18 20:23:42,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:23:43,940 INFO L130 PetriNetUnfolder]: 820/2542 cut-off events. [2022-11-18 20:23:43,941 INFO L131 PetriNetUnfolder]: For 118/118 co-relation queries the response was YES. [2022-11-18 20:23:43,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4475 conditions, 2542 events. 820/2542 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 14358 event pairs, 819 based on Foata normal form. 0/2264 useless extension candidates. Maximal degree in co-relation 4459. Up to 1764 conditions per place. [2022-11-18 20:23:43,957 INFO L137 encePairwiseOnDemand]: 267/273 looper letters, 116 selfloop transitions, 5 changer transitions 0/293 dead transitions. [2022-11-18 20:23:43,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 293 transitions, 1082 flow [2022-11-18 20:23:43,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:23:43,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:23:43,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 986 transitions. [2022-11-18 20:23:43,961 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6019536019536019 [2022-11-18 20:23:43,961 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 986 transitions. [2022-11-18 20:23:43,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 986 transitions. [2022-11-18 20:23:43,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:23:43,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 986 transitions. [2022-11-18 20:23:43,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 164.33333333333334) internal successors, (986), 6 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:43,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 273.0) internal successors, (1911), 7 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:43,969 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 273.0) internal successors, (1911), 7 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:43,969 INFO L175 Difference]: Start difference. First operand has 331 places, 294 transitions, 842 flow. Second operand 6 states and 986 transitions. [2022-11-18 20:23:43,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 293 transitions, 1082 flow [2022-11-18 20:23:43,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 293 transitions, 1036 flow, removed 5 selfloop flow, removed 18 redundant places. [2022-11-18 20:23:43,978 INFO L231 Difference]: Finished difference. Result has 317 places, 293 transitions, 804 flow [2022-11-18 20:23:43,979 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=794, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=804, PETRI_PLACES=317, PETRI_TRANSITIONS=293} [2022-11-18 20:23:43,982 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 45 predicate places. [2022-11-18 20:23:43,982 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 293 transitions, 804 flow [2022-11-18 20:23:43,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:43,983 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:43,983 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:23:43,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:23:43,983 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 20:23:43,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:43,984 INFO L85 PathProgramCache]: Analyzing trace with hash -2100327872, now seen corresponding path program 1 times [2022-11-18 20:23:43,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:43,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906004925] [2022-11-18 20:23:43,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:43,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:44,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:44,757 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-18 20:23:44,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:44,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906004925] [2022-11-18 20:23:44,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906004925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:23:44,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:23:44,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:23:44,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765588226] [2022-11-18 20:23:44,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:23:44,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:23:44,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:44,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:23:44,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:23:44,761 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 273 [2022-11-18 20:23:44,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 293 transitions, 804 flow. Second operand has 6 states, 6 states have (on average 152.5) internal successors, (915), 6 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:44,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:44,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 273 [2022-11-18 20:23:44,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:23:46,788 INFO L130 PetriNetUnfolder]: 1446/4317 cut-off events. [2022-11-18 20:23:46,789 INFO L131 PetriNetUnfolder]: For 126/126 co-relation queries the response was YES. [2022-11-18 20:23:46,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7538 conditions, 4317 events. 1446/4317 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 29975 event pairs, 115 based on Foata normal form. 0/3866 useless extension candidates. Maximal degree in co-relation 7521. Up to 1891 conditions per place. [2022-11-18 20:23:46,814 INFO L137 encePairwiseOnDemand]: 245/273 looper letters, 217 selfloop transitions, 74 changer transitions 0/465 dead transitions. [2022-11-18 20:23:46,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 465 transitions, 1730 flow [2022-11-18 20:23:46,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:23:46,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:23:46,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1169 transitions. [2022-11-18 20:23:46,817 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7136752136752137 [2022-11-18 20:23:46,818 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1169 transitions. [2022-11-18 20:23:46,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1169 transitions. [2022-11-18 20:23:46,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:23:46,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1169 transitions. [2022-11-18 20:23:46,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 194.83333333333334) internal successors, (1169), 6 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:46,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 273.0) internal successors, (1911), 7 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:46,825 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 273.0) internal successors, (1911), 7 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:46,825 INFO L175 Difference]: Start difference. First operand has 317 places, 293 transitions, 804 flow. Second operand 6 states and 1169 transitions. [2022-11-18 20:23:46,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 465 transitions, 1730 flow [2022-11-18 20:23:46,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 465 transitions, 1720 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:23:46,835 INFO L231 Difference]: Finished difference. Result has 321 places, 360 transitions, 1266 flow [2022-11-18 20:23:46,836 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1266, PETRI_PLACES=321, PETRI_TRANSITIONS=360} [2022-11-18 20:23:46,837 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 49 predicate places. [2022-11-18 20:23:46,837 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 360 transitions, 1266 flow [2022-11-18 20:23:46,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 152.5) internal successors, (915), 6 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:46,838 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:46,838 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:23:46,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:23:46,839 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 20:23:46,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:46,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1904946281, now seen corresponding path program 1 times [2022-11-18 20:23:46,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:46,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707634510] [2022-11-18 20:23:46,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:46,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:46,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:47,503 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-18 20:23:47,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:47,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707634510] [2022-11-18 20:23:47,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707634510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:23:47,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:23:47,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:23:47,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493796775] [2022-11-18 20:23:47,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:23:47,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:23:47,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:47,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:23:47,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:23:47,508 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 273 [2022-11-18 20:23:47,510 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 360 transitions, 1266 flow. Second operand has 6 states, 6 states have (on average 163.33333333333334) internal successors, (980), 6 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:47,510 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:47,510 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 273 [2022-11-18 20:23:47,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:23:48,702 INFO L130 PetriNetUnfolder]: 1207/3986 cut-off events. [2022-11-18 20:23:48,702 INFO L131 PetriNetUnfolder]: For 1354/1439 co-relation queries the response was YES. [2022-11-18 20:23:48,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8093 conditions, 3986 events. 1207/3986 cut-off events. For 1354/1439 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 26907 event pairs, 792 based on Foata normal form. 0/3585 useless extension candidates. Maximal degree in co-relation 8072. Up to 2566 conditions per place. [2022-11-18 20:23:48,735 INFO L137 encePairwiseOnDemand]: 267/273 looper letters, 169 selfloop transitions, 5 changer transitions 0/359 dead transitions. [2022-11-18 20:23:48,735 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 359 transitions, 1612 flow [2022-11-18 20:23:48,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:23:48,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:23:48,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1049 transitions. [2022-11-18 20:23:48,739 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6404151404151404 [2022-11-18 20:23:48,740 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1049 transitions. [2022-11-18 20:23:48,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1049 transitions. [2022-11-18 20:23:48,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:23:48,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1049 transitions. [2022-11-18 20:23:48,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 174.83333333333334) internal successors, (1049), 6 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:48,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 273.0) internal successors, (1911), 7 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:48,749 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 273.0) internal successors, (1911), 7 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:48,749 INFO L175 Difference]: Start difference. First operand has 321 places, 360 transitions, 1266 flow. Second operand 6 states and 1049 transitions. [2022-11-18 20:23:48,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 359 transitions, 1612 flow [2022-11-18 20:23:48,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 359 transitions, 1612 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:23:48,763 INFO L231 Difference]: Finished difference. Result has 325 places, 359 transitions, 1274 flow [2022-11-18 20:23:48,765 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=1264, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1274, PETRI_PLACES=325, PETRI_TRANSITIONS=359} [2022-11-18 20:23:48,765 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 53 predicate places. [2022-11-18 20:23:48,766 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 359 transitions, 1274 flow [2022-11-18 20:23:48,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 163.33333333333334) internal successors, (980), 6 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:48,766 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:48,767 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:23:48,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:23:48,767 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 20:23:48,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:48,768 INFO L85 PathProgramCache]: Analyzing trace with hash 2072698922, now seen corresponding path program 1 times [2022-11-18 20:23:48,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:48,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209214024] [2022-11-18 20:23:48,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:48,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:48,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:49,387 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-18 20:23:49,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:49,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209214024] [2022-11-18 20:23:49,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209214024] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:23:49,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:23:49,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:23:49,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141063873] [2022-11-18 20:23:49,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:23:49,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:23:49,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:49,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:23:49,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:23:49,395 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 273 [2022-11-18 20:23:49,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 359 transitions, 1274 flow. Second operand has 6 states, 6 states have (on average 162.5) internal successors, (975), 6 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:49,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:49,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 273 [2022-11-18 20:23:49,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:23:50,636 INFO L130 PetriNetUnfolder]: 1207/3985 cut-off events. [2022-11-18 20:23:50,637 INFO L131 PetriNetUnfolder]: For 1354/1439 co-relation queries the response was YES. [2022-11-18 20:23:50,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8099 conditions, 3985 events. 1207/3985 cut-off events. For 1354/1439 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 26990 event pairs, 792 based on Foata normal form. 0/3585 useless extension candidates. Maximal degree in co-relation 8077. Up to 2568 conditions per place. [2022-11-18 20:23:50,674 INFO L137 encePairwiseOnDemand]: 267/273 looper letters, 170 selfloop transitions, 5 changer transitions 0/358 dead transitions. [2022-11-18 20:23:50,674 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 358 transitions, 1622 flow [2022-11-18 20:23:50,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:23:50,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:23:50,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1038 transitions. [2022-11-18 20:23:50,680 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6336996336996337 [2022-11-18 20:23:50,680 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1038 transitions. [2022-11-18 20:23:50,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1038 transitions. [2022-11-18 20:23:50,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:23:50,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1038 transitions. [2022-11-18 20:23:50,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:50,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 273.0) internal successors, (1911), 7 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:50,688 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 273.0) internal successors, (1911), 7 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:50,688 INFO L175 Difference]: Start difference. First operand has 325 places, 359 transitions, 1274 flow. Second operand 6 states and 1038 transitions. [2022-11-18 20:23:50,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 358 transitions, 1622 flow [2022-11-18 20:23:50,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 358 transitions, 1612 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:23:50,701 INFO L231 Difference]: Finished difference. Result has 324 places, 358 transitions, 1272 flow [2022-11-18 20:23:50,701 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=1262, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1272, PETRI_PLACES=324, PETRI_TRANSITIONS=358} [2022-11-18 20:23:50,703 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 52 predicate places. [2022-11-18 20:23:50,703 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 358 transitions, 1272 flow [2022-11-18 20:23:50,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 162.5) internal successors, (975), 6 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:50,704 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:50,704 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:23:50,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:23:50,704 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 20:23:50,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:50,705 INFO L85 PathProgramCache]: Analyzing trace with hash 2000227336, now seen corresponding path program 1 times [2022-11-18 20:23:50,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:50,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417322571] [2022-11-18 20:23:50,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:50,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:50,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:51,388 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-18 20:23:51,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:51,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417322571] [2022-11-18 20:23:51,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417322571] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:23:51,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:23:51,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:23:51,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217183259] [2022-11-18 20:23:51,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:23:51,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:23:51,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:51,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:23:51,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:23:51,391 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 273 [2022-11-18 20:23:51,392 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 358 transitions, 1272 flow. Second operand has 6 states, 6 states have (on average 163.33333333333334) internal successors, (980), 6 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:51,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:51,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 273 [2022-11-18 20:23:51,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:23:52,955 INFO L130 PetriNetUnfolder]: 1207/3984 cut-off events. [2022-11-18 20:23:52,955 INFO L131 PetriNetUnfolder]: For 1357/1442 co-relation queries the response was YES. [2022-11-18 20:23:52,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8097 conditions, 3984 events. 1207/3984 cut-off events. For 1357/1442 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 26982 event pairs, 792 based on Foata normal form. 0/3585 useless extension candidates. Maximal degree in co-relation 8075. Up to 2567 conditions per place. [2022-11-18 20:23:52,996 INFO L137 encePairwiseOnDemand]: 267/273 looper letters, 169 selfloop transitions, 5 changer transitions 0/357 dead transitions. [2022-11-18 20:23:52,996 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 357 transitions, 1618 flow [2022-11-18 20:23:52,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:23:52,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:23:52,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1037 transitions. [2022-11-18 20:23:53,000 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6330891330891331 [2022-11-18 20:23:53,000 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1037 transitions. [2022-11-18 20:23:53,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1037 transitions. [2022-11-18 20:23:53,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:23:53,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1037 transitions. [2022-11-18 20:23:53,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 172.83333333333334) internal successors, (1037), 6 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:53,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 273.0) internal successors, (1911), 7 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:53,012 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 273.0) internal successors, (1911), 7 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:53,012 INFO L175 Difference]: Start difference. First operand has 324 places, 358 transitions, 1272 flow. Second operand 6 states and 1037 transitions. [2022-11-18 20:23:53,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 357 transitions, 1618 flow [2022-11-18 20:23:53,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 357 transitions, 1608 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:23:53,028 INFO L231 Difference]: Finished difference. Result has 323 places, 357 transitions, 1270 flow [2022-11-18 20:23:53,029 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=1260, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1270, PETRI_PLACES=323, PETRI_TRANSITIONS=357} [2022-11-18 20:23:53,030 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 51 predicate places. [2022-11-18 20:23:53,030 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 357 transitions, 1270 flow [2022-11-18 20:23:53,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 163.33333333333334) internal successors, (980), 6 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:53,031 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:53,031 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:23:53,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:23:53,032 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 20:23:53,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:53,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1869039751, now seen corresponding path program 1 times [2022-11-18 20:23:53,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:53,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937579413] [2022-11-18 20:23:53,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:53,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:53,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:54,017 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-18 20:23:54,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:54,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937579413] [2022-11-18 20:23:54,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937579413] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:23:54,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:23:54,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:23:54,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965812105] [2022-11-18 20:23:54,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:23:54,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:23:54,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:54,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:23:54,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:23:54,022 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 273 [2022-11-18 20:23:54,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 357 transitions, 1270 flow. Second operand has 6 states, 6 states have (on average 166.83333333333334) internal successors, (1001), 6 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:54,023 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:54,023 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 273 [2022-11-18 20:23:54,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:23:55,818 INFO L130 PetriNetUnfolder]: 1524/4610 cut-off events. [2022-11-18 20:23:55,818 INFO L131 PetriNetUnfolder]: For 1497/1596 co-relation queries the response was YES. [2022-11-18 20:23:55,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9514 conditions, 4610 events. 1524/4610 cut-off events. For 1497/1596 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 31636 event pairs, 624 based on Foata normal form. 16/4206 useless extension candidates. Maximal degree in co-relation 9492. Up to 2609 conditions per place. [2022-11-18 20:23:55,858 INFO L137 encePairwiseOnDemand]: 250/273 looper letters, 251 selfloop transitions, 130 changer transitions 0/566 dead transitions. [2022-11-18 20:23:55,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 566 transitions, 2826 flow [2022-11-18 20:23:55,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:23:55,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:23:55,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1196 transitions. [2022-11-18 20:23:55,861 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7301587301587301 [2022-11-18 20:23:55,861 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1196 transitions. [2022-11-18 20:23:55,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1196 transitions. [2022-11-18 20:23:55,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:23:55,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1196 transitions. [2022-11-18 20:23:55,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 199.33333333333334) internal successors, (1196), 6 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:55,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 273.0) internal successors, (1911), 7 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:55,869 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 273.0) internal successors, (1911), 7 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:55,869 INFO L175 Difference]: Start difference. First operand has 323 places, 357 transitions, 1270 flow. Second operand 6 states and 1196 transitions. [2022-11-18 20:23:55,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 566 transitions, 2826 flow [2022-11-18 20:23:55,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 566 transitions, 2816 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:23:55,888 INFO L231 Difference]: Finished difference. Result has 328 places, 486 transitions, 2488 flow [2022-11-18 20:23:55,889 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=1260, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2488, PETRI_PLACES=328, PETRI_TRANSITIONS=486} [2022-11-18 20:23:55,890 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 56 predicate places. [2022-11-18 20:23:55,891 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 486 transitions, 2488 flow [2022-11-18 20:23:55,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 166.83333333333334) internal successors, (1001), 6 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:55,891 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:55,892 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:23:55,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:23:55,892 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 20:23:55,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:55,893 INFO L85 PathProgramCache]: Analyzing trace with hash -45682255, now seen corresponding path program 1 times [2022-11-18 20:23:55,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:55,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138267810] [2022-11-18 20:23:55,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:55,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:55,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:56,707 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-18 20:23:56,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:56,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138267810] [2022-11-18 20:23:56,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138267810] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:23:56,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:23:56,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:23:56,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704600827] [2022-11-18 20:23:56,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:23:56,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:23:56,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:56,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:23:56,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:23:56,712 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 273 [2022-11-18 20:23:56,713 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 486 transitions, 2488 flow. Second operand has 6 states, 6 states have (on average 167.83333333333334) internal successors, (1007), 6 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:56,714 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:56,714 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 273 [2022-11-18 20:23:56,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:23:58,699 INFO L130 PetriNetUnfolder]: 1622/5396 cut-off events. [2022-11-18 20:23:58,699 INFO L131 PetriNetUnfolder]: For 3832/4019 co-relation queries the response was YES. [2022-11-18 20:23:58,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12509 conditions, 5396 events. 1622/5396 cut-off events. For 3832/4019 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 40651 event pairs, 523 based on Foata normal form. 0/5024 useless extension candidates. Maximal degree in co-relation 12483. Up to 2869 conditions per place. [2022-11-18 20:23:58,736 INFO L137 encePairwiseOnDemand]: 251/273 looper letters, 375 selfloop transitions, 129 changer transitions 5/694 dead transitions. [2022-11-18 20:23:58,736 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 694 transitions, 4544 flow [2022-11-18 20:23:58,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:23:58,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:23:58,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1195 transitions. [2022-11-18 20:23:58,740 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7295482295482295 [2022-11-18 20:23:58,740 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1195 transitions. [2022-11-18 20:23:58,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1195 transitions. [2022-11-18 20:23:58,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:23:58,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1195 transitions. [2022-11-18 20:23:58,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 199.16666666666666) internal successors, (1195), 6 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:58,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 273.0) internal successors, (1911), 7 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:58,747 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 273.0) internal successors, (1911), 7 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:58,747 INFO L175 Difference]: Start difference. First operand has 328 places, 486 transitions, 2488 flow. Second operand 6 states and 1195 transitions. [2022-11-18 20:23:58,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 694 transitions, 4544 flow [2022-11-18 20:23:58,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 694 transitions, 4544 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:23:58,771 INFO L231 Difference]: Finished difference. Result has 338 places, 613 transitions, 3954 flow [2022-11-18 20:23:58,771 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=2488, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3954, PETRI_PLACES=338, PETRI_TRANSITIONS=613} [2022-11-18 20:23:58,772 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 66 predicate places. [2022-11-18 20:23:58,772 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 613 transitions, 3954 flow [2022-11-18 20:23:58,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 167.83333333333334) internal successors, (1007), 6 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:58,773 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:58,773 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:23:58,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:23:58,774 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 20:23:58,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:58,774 INFO L85 PathProgramCache]: Analyzing trace with hash 626466260, now seen corresponding path program 1 times [2022-11-18 20:23:58,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:58,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065634455] [2022-11-18 20:23:58,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:58,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:58,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:59,499 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-18 20:23:59,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:59,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065634455] [2022-11-18 20:23:59,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065634455] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:23:59,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:23:59,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:23:59,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104401222] [2022-11-18 20:23:59,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:23:59,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:23:59,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:59,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:23:59,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:23:59,504 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 273 [2022-11-18 20:23:59,505 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 613 transitions, 3954 flow. Second operand has 6 states, 6 states have (on average 163.16666666666666) internal successors, (979), 6 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:59,505 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:59,505 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 273 [2022-11-18 20:23:59,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:01,312 INFO L130 PetriNetUnfolder]: 1747/5569 cut-off events. [2022-11-18 20:24:01,312 INFO L131 PetriNetUnfolder]: For 5722/5750 co-relation queries the response was YES. [2022-11-18 20:24:01,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14906 conditions, 5569 events. 1747/5569 cut-off events. For 5722/5750 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 40955 event pairs, 657 based on Foata normal form. 0/5265 useless extension candidates. Maximal degree in co-relation 14875. Up to 3519 conditions per place. [2022-11-18 20:24:01,360 INFO L137 encePairwiseOnDemand]: 254/273 looper letters, 445 selfloop transitions, 84 changer transitions 0/711 dead transitions. [2022-11-18 20:24:01,360 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 711 transitions, 5526 flow [2022-11-18 20:24:01,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:24:01,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:24:01,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1109 transitions. [2022-11-18 20:24:01,364 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6770451770451771 [2022-11-18 20:24:01,365 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1109 transitions. [2022-11-18 20:24:01,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1109 transitions. [2022-11-18 20:24:01,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:01,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1109 transitions. [2022-11-18 20:24:01,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 184.83333333333334) internal successors, (1109), 6 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:01,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 273.0) internal successors, (1911), 7 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:01,376 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 273.0) internal successors, (1911), 7 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:01,377 INFO L175 Difference]: Start difference. First operand has 338 places, 613 transitions, 3954 flow. Second operand 6 states and 1109 transitions. [2022-11-18 20:24:01,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 711 transitions, 5526 flow [2022-11-18 20:24:01,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 711 transitions, 5272 flow, removed 127 selfloop flow, removed 0 redundant places. [2022-11-18 20:24:01,423 INFO L231 Difference]: Finished difference. Result has 347 places, 684 transitions, 4490 flow [2022-11-18 20:24:01,424 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=3706, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=565, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4490, PETRI_PLACES=347, PETRI_TRANSITIONS=684} [2022-11-18 20:24:01,424 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 75 predicate places. [2022-11-18 20:24:01,425 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 684 transitions, 4490 flow [2022-11-18 20:24:01,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 163.16666666666666) internal successors, (979), 6 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:01,425 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:01,426 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:24:01,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 20:24:01,426 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 20:24:01,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:01,427 INFO L85 PathProgramCache]: Analyzing trace with hash 179601006, now seen corresponding path program 1 times [2022-11-18 20:24:01,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:01,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247095022] [2022-11-18 20:24:01,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:01,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:04,291 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-18 20:24:04,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:04,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247095022] [2022-11-18 20:24:04,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247095022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:04,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:04,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:24:04,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611919218] [2022-11-18 20:24:04,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:04,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:24:04,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:04,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:24:04,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:24:04,296 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 273 [2022-11-18 20:24:04,298 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 684 transitions, 4490 flow. Second operand has 21 states, 21 states have (on average 110.57142857142857) internal successors, (2322), 21 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:04,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:04,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 273 [2022-11-18 20:24:04,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:10,428 INFO L130 PetriNetUnfolder]: 2720/7443 cut-off events. [2022-11-18 20:24:10,428 INFO L131 PetriNetUnfolder]: For 9126/9139 co-relation queries the response was YES. [2022-11-18 20:24:10,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22417 conditions, 7443 events. 2720/7443 cut-off events. For 9126/9139 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 55896 event pairs, 426 based on Foata normal form. 44/7157 useless extension candidates. Maximal degree in co-relation 22381. Up to 2937 conditions per place. [2022-11-18 20:24:10,496 INFO L137 encePairwiseOnDemand]: 233/273 looper letters, 788 selfloop transitions, 209 changer transitions 16/1148 dead transitions. [2022-11-18 20:24:10,497 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 1148 transitions, 9058 flow [2022-11-18 20:24:10,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-18 20:24:10,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-11-18 20:24:10,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 5109 transitions. [2022-11-18 20:24:10,506 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43521594684385384 [2022-11-18 20:24:10,506 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 5109 transitions. [2022-11-18 20:24:10,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 5109 transitions. [2022-11-18 20:24:10,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:10,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 5109 transitions. [2022-11-18 20:24:10,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 118.81395348837209) internal successors, (5109), 43 states have internal predecessors, (5109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:10,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 273.0) internal successors, (12012), 44 states have internal predecessors, (12012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:10,536 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 273.0) internal successors, (12012), 44 states have internal predecessors, (12012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:10,536 INFO L175 Difference]: Start difference. First operand has 347 places, 684 transitions, 4490 flow. Second operand 43 states and 5109 transitions. [2022-11-18 20:24:10,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 1148 transitions, 9058 flow [2022-11-18 20:24:10,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 1148 transitions, 8986 flow, removed 36 selfloop flow, removed 0 redundant places. [2022-11-18 20:24:10,634 INFO L231 Difference]: Finished difference. Result has 398 places, 757 transitions, 5652 flow [2022-11-18 20:24:10,635 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=4436, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=684, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=5652, PETRI_PLACES=398, PETRI_TRANSITIONS=757} [2022-11-18 20:24:10,635 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 126 predicate places. [2022-11-18 20:24:10,636 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 757 transitions, 5652 flow [2022-11-18 20:24:10,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 110.57142857142857) internal successors, (2322), 21 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:10,637 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:10,637 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:24:10,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 20:24:10,637 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 20:24:10,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:10,638 INFO L85 PathProgramCache]: Analyzing trace with hash -199762916, now seen corresponding path program 2 times [2022-11-18 20:24:10,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:10,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950022269] [2022-11-18 20:24:10,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:10,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:10,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:13,208 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-18 20:24:13,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:13,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950022269] [2022-11-18 20:24:13,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950022269] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:13,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:13,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:24:13,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612742578] [2022-11-18 20:24:13,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:13,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:24:13,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:13,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:24:13,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:24:13,212 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 273 [2022-11-18 20:24:13,214 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 757 transitions, 5652 flow. Second operand has 21 states, 21 states have (on average 110.57142857142857) internal successors, (2322), 21 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:13,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:13,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 273 [2022-11-18 20:24:13,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:20,096 INFO L130 PetriNetUnfolder]: 4130/11398 cut-off events. [2022-11-18 20:24:20,096 INFO L131 PetriNetUnfolder]: For 19334/19360 co-relation queries the response was YES. [2022-11-18 20:24:20,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36179 conditions, 11398 events. 4130/11398 cut-off events. For 19334/19360 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 96861 event pairs, 1041 based on Foata normal form. 46/10963 useless extension candidates. Maximal degree in co-relation 36133. Up to 3527 conditions per place. [2022-11-18 20:24:20,204 INFO L137 encePairwiseOnDemand]: 222/273 looper letters, 1032 selfloop transitions, 327 changer transitions 16/1510 dead transitions. [2022-11-18 20:24:20,205 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 1510 transitions, 13065 flow [2022-11-18 20:24:20,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 20:24:20,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-18 20:24:20,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 4726 transitions. [2022-11-18 20:24:20,213 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45556198187777136 [2022-11-18 20:24:20,214 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 4726 transitions. [2022-11-18 20:24:20,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 4726 transitions. [2022-11-18 20:24:20,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:20,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 4726 transitions. [2022-11-18 20:24:20,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 124.36842105263158) internal successors, (4726), 38 states have internal predecessors, (4726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:20,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 273.0) internal successors, (10647), 39 states have internal predecessors, (10647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:20,240 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 273.0) internal successors, (10647), 39 states have internal predecessors, (10647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:20,241 INFO L175 Difference]: Start difference. First operand has 398 places, 757 transitions, 5652 flow. Second operand 38 states and 4726 transitions. [2022-11-18 20:24:20,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 1510 transitions, 13065 flow [2022-11-18 20:24:20,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 1510 transitions, 12953 flow, removed 5 selfloop flow, removed 21 redundant places. [2022-11-18 20:24:20,394 INFO L231 Difference]: Finished difference. Result has 427 places, 891 transitions, 8297 flow [2022-11-18 20:24:20,395 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=5576, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=757, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8297, PETRI_PLACES=427, PETRI_TRANSITIONS=891} [2022-11-18 20:24:20,396 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 155 predicate places. [2022-11-18 20:24:20,396 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 891 transitions, 8297 flow [2022-11-18 20:24:20,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 110.57142857142857) internal successors, (2322), 21 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:20,397 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:20,397 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:24:20,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 20:24:20,398 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 20:24:20,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:20,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1134777100, now seen corresponding path program 3 times [2022-11-18 20:24:20,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:20,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312203468] [2022-11-18 20:24:20,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:20,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:20,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:23,027 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-18 20:24:23,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:23,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312203468] [2022-11-18 20:24:23,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312203468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:23,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:23,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:24:23,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761917609] [2022-11-18 20:24:23,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:23,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:24:23,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:23,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:24:23,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:24:23,032 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 273 [2022-11-18 20:24:23,035 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 891 transitions, 8297 flow. Second operand has 20 states, 20 states have (on average 112.9) internal successors, (2258), 20 states have internal predecessors, (2258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:23,035 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:23,035 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 273 [2022-11-18 20:24:23,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:31,386 INFO L130 PetriNetUnfolder]: 5251/14971 cut-off events. [2022-11-18 20:24:31,386 INFO L131 PetriNetUnfolder]: For 34916/35142 co-relation queries the response was YES. [2022-11-18 20:24:31,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50089 conditions, 14971 events. 5251/14971 cut-off events. For 34916/35142 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 139353 event pairs, 1065 based on Foata normal form. 142/14477 useless extension candidates. Maximal degree in co-relation 50030. Up to 4401 conditions per place. [2022-11-18 20:24:31,512 INFO L137 encePairwiseOnDemand]: 226/273 looper letters, 1156 selfloop transitions, 407 changer transitions 12/1712 dead transitions. [2022-11-18 20:24:31,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 1712 transitions, 17728 flow [2022-11-18 20:24:31,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 20:24:31,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-18 20:24:31,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 4565 transitions. [2022-11-18 20:24:31,520 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4644892144892145 [2022-11-18 20:24:31,520 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 4565 transitions. [2022-11-18 20:24:31,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 4565 transitions. [2022-11-18 20:24:31,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:31,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 4565 transitions. [2022-11-18 20:24:31,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 126.80555555555556) internal successors, (4565), 36 states have internal predecessors, (4565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:31,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 273.0) internal successors, (10101), 37 states have internal predecessors, (10101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:31,544 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 273.0) internal successors, (10101), 37 states have internal predecessors, (10101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:31,544 INFO L175 Difference]: Start difference. First operand has 427 places, 891 transitions, 8297 flow. Second operand 36 states and 4565 transitions. [2022-11-18 20:24:31,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 1712 transitions, 17728 flow [2022-11-18 20:24:31,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 1712 transitions, 17549 flow, removed 0 selfloop flow, removed 23 redundant places. [2022-11-18 20:24:31,826 INFO L231 Difference]: Finished difference. Result has 459 places, 1078 transitions, 12137 flow [2022-11-18 20:24:31,827 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=8154, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=891, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=233, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=12137, PETRI_PLACES=459, PETRI_TRANSITIONS=1078} [2022-11-18 20:24:31,828 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 187 predicate places. [2022-11-18 20:24:31,828 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 1078 transitions, 12137 flow [2022-11-18 20:24:31,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 112.9) internal successors, (2258), 20 states have internal predecessors, (2258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:31,829 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:31,829 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:24:31,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 20:24:31,830 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 20:24:31,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:31,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1983941384, now seen corresponding path program 4 times [2022-11-18 20:24:31,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:31,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693941079] [2022-11-18 20:24:31,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:31,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:31,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:35,055 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-18 20:24:35,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:35,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693941079] [2022-11-18 20:24:35,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693941079] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:35,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:35,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 20:24:35,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596270978] [2022-11-18 20:24:35,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:35,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:24:35,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:35,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:24:35,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:24:35,061 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 273 [2022-11-18 20:24:35,063 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 1078 transitions, 12137 flow. Second operand has 16 states, 16 states have (on average 123.5) internal successors, (1976), 16 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:35,063 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:35,064 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 273 [2022-11-18 20:24:35,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:46,504 INFO L130 PetriNetUnfolder]: 8227/23662 cut-off events. [2022-11-18 20:24:46,504 INFO L131 PetriNetUnfolder]: For 68591/68804 co-relation queries the response was YES. [2022-11-18 20:24:46,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81104 conditions, 23662 events. 8227/23662 cut-off events. For 68591/68804 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 246196 event pairs, 2439 based on Foata normal form. 149/22823 useless extension candidates. Maximal degree in co-relation 81025. Up to 7687 conditions per place. [2022-11-18 20:24:46,790 INFO L137 encePairwiseOnDemand]: 237/273 looper letters, 970 selfloop transitions, 528 changer transitions 6/1651 dead transitions. [2022-11-18 20:24:46,790 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 1651 transitions, 20890 flow [2022-11-18 20:24:46,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 20:24:46,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-18 20:24:46,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2651 transitions. [2022-11-18 20:24:46,795 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5110854058222479 [2022-11-18 20:24:46,795 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2651 transitions. [2022-11-18 20:24:46,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2651 transitions. [2022-11-18 20:24:46,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:46,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2651 transitions. [2022-11-18 20:24:46,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 139.52631578947367) internal successors, (2651), 19 states have internal predecessors, (2651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:46,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 273.0) internal successors, (5460), 20 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:46,807 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 273.0) internal successors, (5460), 20 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:46,807 INFO L175 Difference]: Start difference. First operand has 459 places, 1078 transitions, 12137 flow. Second operand 19 states and 2651 transitions. [2022-11-18 20:24:46,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 1651 transitions, 20890 flow [2022-11-18 20:24:47,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 1651 transitions, 20611 flow, removed 103 selfloop flow, removed 13 redundant places. [2022-11-18 20:24:47,396 INFO L231 Difference]: Finished difference. Result has 474 places, 1279 transitions, 17520 flow [2022-11-18 20:24:47,397 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=11900, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1078, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=327, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=591, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=17520, PETRI_PLACES=474, PETRI_TRANSITIONS=1279} [2022-11-18 20:24:47,399 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 202 predicate places. [2022-11-18 20:24:47,399 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 1279 transitions, 17520 flow [2022-11-18 20:24:47,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 123.5) internal successors, (1976), 16 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:47,400 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:47,400 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:24:47,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 20:24:47,400 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 20:24:47,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:47,401 INFO L85 PathProgramCache]: Analyzing trace with hash -521863450, now seen corresponding path program 5 times [2022-11-18 20:24:47,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:47,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027827324] [2022-11-18 20:24:47,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:47,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:49,843 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-18 20:24:49,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:49,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027827324] [2022-11-18 20:24:49,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027827324] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:49,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:49,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:24:49,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309594545] [2022-11-18 20:24:49,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:49,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:24:49,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:49,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:24:49,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:24:49,849 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 273 [2022-11-18 20:24:49,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 1279 transitions, 17520 flow. Second operand has 21 states, 21 states have (on average 110.57142857142857) internal successors, (2322), 21 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:49,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:49,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 273 [2022-11-18 20:24:49,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:25:09,722 INFO L130 PetriNetUnfolder]: 11496/31608 cut-off events. [2022-11-18 20:25:09,722 INFO L131 PetriNetUnfolder]: For 109042/109103 co-relation queries the response was YES. [2022-11-18 20:25:10,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112650 conditions, 31608 events. 11496/31608 cut-off events. For 109042/109103 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 337892 event pairs, 3181 based on Foata normal form. 68/30397 useless extension candidates. Maximal degree in co-relation 112561. Up to 9183 conditions per place. [2022-11-18 20:25:10,134 INFO L137 encePairwiseOnDemand]: 222/273 looper letters, 1264 selfloop transitions, 680 changer transitions 16/2095 dead transitions. [2022-11-18 20:25:10,134 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 2095 transitions, 28310 flow [2022-11-18 20:25:10,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-18 20:25:10,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-18 20:25:10,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 5079 transitions. [2022-11-18 20:25:10,147 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4537657464486733 [2022-11-18 20:25:10,147 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 5079 transitions. [2022-11-18 20:25:10,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 5079 transitions. [2022-11-18 20:25:10,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:25:10,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 5079 transitions. [2022-11-18 20:25:10,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 123.8780487804878) internal successors, (5079), 41 states have internal predecessors, (5079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:10,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 273.0) internal successors, (11466), 42 states have internal predecessors, (11466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:10,180 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 273.0) internal successors, (11466), 42 states have internal predecessors, (11466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:10,180 INFO L175 Difference]: Start difference. First operand has 474 places, 1279 transitions, 17520 flow. Second operand 41 states and 5079 transitions. [2022-11-18 20:25:10,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 2095 transitions, 28310 flow [2022-11-18 20:25:11,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 2095 transitions, 28124 flow, removed 59 selfloop flow, removed 5 redundant places. [2022-11-18 20:25:11,337 INFO L231 Difference]: Finished difference. Result has 526 places, 1455 transitions, 23502 flow [2022-11-18 20:25:11,338 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=17368, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=505, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=627, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=23502, PETRI_PLACES=526, PETRI_TRANSITIONS=1455} [2022-11-18 20:25:11,338 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 254 predicate places. [2022-11-18 20:25:11,339 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 1455 transitions, 23502 flow [2022-11-18 20:25:11,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 110.57142857142857) internal successors, (2322), 21 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:11,340 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:25:11,340 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:25:11,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 20:25:11,340 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 20:25:11,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:11,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1067057782, now seen corresponding path program 6 times [2022-11-18 20:25:11,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:11,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226701746] [2022-11-18 20:25:11,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:11,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:11,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:14,080 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-18 20:25:14,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:14,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226701746] [2022-11-18 20:25:14,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226701746] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:14,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:25:14,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:25:14,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648016365] [2022-11-18 20:25:14,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:14,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:25:14,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:14,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:25:14,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:25:14,085 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 273 [2022-11-18 20:25:14,087 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 1455 transitions, 23502 flow. Second operand has 20 states, 20 states have (on average 112.9) internal successors, (2258), 20 states have internal predecessors, (2258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:14,087 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:25:14,087 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 273 [2022-11-18 20:25:14,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:25:35,343 INFO L130 PetriNetUnfolder]: 11842/33655 cut-off events. [2022-11-18 20:25:35,343 INFO L131 PetriNetUnfolder]: For 154990/155889 co-relation queries the response was YES. [2022-11-18 20:25:35,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126278 conditions, 33655 events. 11842/33655 cut-off events. For 154990/155889 co-relation queries the response was YES. Maximal size of possible extension queue 661. Compared 373886 event pairs, 2698 based on Foata normal form. 676/32928 useless extension candidates. Maximal degree in co-relation 126172. Up to 10119 conditions per place. [2022-11-18 20:25:35,819 INFO L137 encePairwiseOnDemand]: 226/273 looper letters, 1161 selfloop transitions, 898 changer transitions 12/2208 dead transitions. [2022-11-18 20:25:35,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 2208 transitions, 34823 flow [2022-11-18 20:25:35,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 20:25:35,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 20:25:35,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4432 transitions. [2022-11-18 20:25:35,826 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4638409209837781 [2022-11-18 20:25:35,826 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4432 transitions. [2022-11-18 20:25:35,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4432 transitions. [2022-11-18 20:25:35,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:25:35,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4432 transitions. [2022-11-18 20:25:35,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 126.62857142857143) internal successors, (4432), 35 states have internal predecessors, (4432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:35,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 273.0) internal successors, (9828), 36 states have internal predecessors, (9828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:35,845 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 273.0) internal successors, (9828), 36 states have internal predecessors, (9828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:35,846 INFO L175 Difference]: Start difference. First operand has 526 places, 1455 transitions, 23502 flow. Second operand 35 states and 4432 transitions. [2022-11-18 20:25:35,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 2208 transitions, 34823 flow [2022-11-18 20:25:37,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 2208 transitions, 34364 flow, removed 144 selfloop flow, removed 22 redundant places. [2022-11-18 20:25:37,704 INFO L231 Difference]: Finished difference. Result has 551 places, 1627 transitions, 29708 flow [2022-11-18 20:25:37,705 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=23074, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=730, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=602, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=29708, PETRI_PLACES=551, PETRI_TRANSITIONS=1627} [2022-11-18 20:25:37,705 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 279 predicate places. [2022-11-18 20:25:37,706 INFO L495 AbstractCegarLoop]: Abstraction has has 551 places, 1627 transitions, 29708 flow [2022-11-18 20:25:37,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 112.9) internal successors, (2258), 20 states have internal predecessors, (2258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:37,706 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:25:37,707 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:25:37,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 20:25:37,707 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 20:25:37,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:37,708 INFO L85 PathProgramCache]: Analyzing trace with hash -762812694, now seen corresponding path program 7 times [2022-11-18 20:25:37,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:37,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638083625] [2022-11-18 20:25:37,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:37,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:37,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:39,521 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-18 20:25:39,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:39,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638083625] [2022-11-18 20:25:39,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638083625] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:39,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:25:39,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-18 20:25:39,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191387290] [2022-11-18 20:25:39,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:39,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 20:25:39,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:39,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 20:25:39,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2022-11-18 20:25:39,526 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 273 [2022-11-18 20:25:39,528 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 551 places, 1627 transitions, 29708 flow. Second operand has 25 states, 25 states have (on average 106.0) internal successors, (2650), 25 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:39,528 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:25:39,528 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 273 [2022-11-18 20:25:39,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand