./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 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bfaa52-393c-4663-9685-36985e939596/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bfaa52-393c-4663-9685-36985e939596/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bfaa52-393c-4663-9685-36985e939596/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bfaa52-393c-4663-9685-36985e939596/bin/uautomizer-ug76WZFUDN/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_72bfaa52-393c-4663-9685-36985e939596/bin/uautomizer-ug76WZFUDN/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bfaa52-393c-4663-9685-36985e939596/bin/uautomizer-ug76WZFUDN --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-6b4ec56 [2022-11-20 12:10:50,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:10:50,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:10:50,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:10:50,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:10:50,389 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:10:50,391 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:10:50,394 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:10:50,396 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:10:50,402 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:10:50,403 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:10:50,406 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:10:50,406 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:10:50,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:10:50,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:10:50,412 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:10:50,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:10:50,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:10:50,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:10:50,423 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:10:50,424 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:10:50,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:10:50,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:10:50,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:10:50,439 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:10:50,440 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:10:50,440 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:10:50,442 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:10:50,442 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:10:50,444 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:10:50,444 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:10:50,445 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:10:50,447 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:10:50,448 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:10:50,449 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:10:50,449 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:10:50,450 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:10:50,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:10:50,451 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:10:50,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:10:50,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:10:50,454 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bfaa52-393c-4663-9685-36985e939596/bin/uautomizer-ug76WZFUDN/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-20 12:10:50,495 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:10:50,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:10:50,496 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:10:50,496 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:10:50,497 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:10:50,497 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:10:50,498 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:10:50,498 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:10:50,499 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:10:50,499 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:10:50,500 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:10:50,500 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:10:50,500 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:10:50,501 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:10:50,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:10:50,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:10:50,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:10:50,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:10:50,502 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-20 12:10:50,502 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:10:50,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:10:50,503 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:10:50,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:10:50,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:10:50,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:10:50,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:10:50,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:10:50,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:10:50,505 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:10:50,505 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:10:50,505 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:10:50,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:10:50,506 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:10:50,506 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:10:50,506 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:10:50,506 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_72bfaa52-393c-4663-9685-36985e939596/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bfaa52-393c-4663-9685-36985e939596/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12bbf3623faa1d8cb0ae406b9406d293839854c20d2fb62622ec841c419248fb [2022-11-20 12:10:50,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:10:50,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:10:50,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:10:50,811 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:10:50,811 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:10:50,812 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bfaa52-393c-4663-9685-36985e939596/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/09-regions_19-nested_nr.i [2022-11-20 12:10:53,822 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:10:54,113 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:10:54,114 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bfaa52-393c-4663-9685-36985e939596/sv-benchmarks/c/goblint-regression/09-regions_19-nested_nr.i [2022-11-20 12:10:54,151 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bfaa52-393c-4663-9685-36985e939596/bin/uautomizer-ug76WZFUDN/data/cbb768bbb/197510ef089e484194c424a86a4640a3/FLAGe55f409ed [2022-11-20 12:10:54,170 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bfaa52-393c-4663-9685-36985e939596/bin/uautomizer-ug76WZFUDN/data/cbb768bbb/197510ef089e484194c424a86a4640a3 [2022-11-20 12:10:54,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:10:54,174 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:10:54,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:10:54,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:10:54,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:10:54,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:10:54" (1/1) ... [2022-11-20 12:10:54,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a9be048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:54, skipping insertion in model container [2022-11-20 12:10:54,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:10:54" (1/1) ... [2022-11-20 12:10:54,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:10:54,241 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:10:54,934 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:10:54,960 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:10:55,046 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:10:55,128 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:10:55,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:55 WrapperNode [2022-11-20 12:10:55,129 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:10:55,130 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:10:55,130 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:10:55,130 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:10:55,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:55" (1/1) ... [2022-11-20 12:10:55,159 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:55" (1/1) ... [2022-11-20 12:10:55,202 INFO L138 Inliner]: procedures = 370, calls = 29, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 226 [2022-11-20 12:10:55,202 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:10:55,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:10:55,203 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:10:55,203 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:10:55,214 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:55" (1/1) ... [2022-11-20 12:10:55,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:55" (1/1) ... [2022-11-20 12:10:55,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:55" (1/1) ... [2022-11-20 12:10:55,228 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:55" (1/1) ... [2022-11-20 12:10:55,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:55" (1/1) ... [2022-11-20 12:10:55,296 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:55" (1/1) ... [2022-11-20 12:10:55,299 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:55" (1/1) ... [2022-11-20 12:10:55,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:55" (1/1) ... [2022-11-20 12:10:55,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:10:55,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:10:55,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:10:55,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:10:55,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:55" (1/1) ... [2022-11-20 12:10:55,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:10:55,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bfaa52-393c-4663-9685-36985e939596/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:10:55,342 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bfaa52-393c-4663-9685-36985e939596/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:10:55,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bfaa52-393c-4663-9685-36985e939596/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:10:55,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:10:55,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 12:10:55,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:10:55,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:10:55,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:10:55,392 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 12:10:55,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:10:55,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:10:55,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 12:10:55,393 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-20 12:10:55,393 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-20 12:10:55,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:10:55,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:10:55,394 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 12:10:55,593 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:10:55,595 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:10:56,134 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:10:56,145 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:10:56,145 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 12:10:56,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:10:56 BoogieIcfgContainer [2022-11-20 12:10:56,148 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:10:56,150 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:10:56,150 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:10:56,156 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:10:56,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:10:54" (1/3) ... [2022-11-20 12:10:56,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dae069d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:10:56, skipping insertion in model container [2022-11-20 12:10:56,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:55" (2/3) ... [2022-11-20 12:10:56,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dae069d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:10:56, skipping insertion in model container [2022-11-20 12:10:56,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:10:56" (3/3) ... [2022-11-20 12:10:56,161 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_19-nested_nr.i [2022-11-20 12:10:56,168 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:10:56,177 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:10:56,177 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-20 12:10:56,178 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:10:56,326 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 12:10:56,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 273 places, 273 transitions, 551 flow [2022-11-20 12:10:56,498 INFO L130 PetriNetUnfolder]: 4/272 cut-off events. [2022-11-20 12:10:56,498 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:10:56,505 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. [2022-11-20 12:10:56,505 INFO L82 GeneralOperation]: Start removeDead. Operand has 273 places, 273 transitions, 551 flow [2022-11-20 12:10:56,512 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 272 places, 272 transitions, 547 flow [2022-11-20 12:10:56,522 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:10:56,531 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;@67d6c09, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:10:56,532 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-20 12:10:56,546 INFO L130 PetriNetUnfolder]: 3/47 cut-off events. [2022-11-20 12:10:56,547 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:10:56,551 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:10:56,551 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] [2022-11-20 12:10:56,552 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)] === [2022-11-20 12:10:56,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:56,558 INFO L85 PathProgramCache]: Analyzing trace with hash -400245388, now seen corresponding path program 1 times [2022-11-20 12:10:56,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:10:56,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204029437] [2022-11-20 12:10:56,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:56,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:10:56,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:56,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:56,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:10:56,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204029437] [2022-11-20 12:10:56,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204029437] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:10:56,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:10:56,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:10:56,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614986447] [2022-11-20 12:10:56,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:56,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 12:10:56,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:10:56,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 12:10:56,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 12:10:56,817 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 273 [2022-11-20 12:10:56,821 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) [2022-11-20 12:10:56,821 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:10:56,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 273 [2022-11-20 12:10:56,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:10:56,929 INFO L130 PetriNetUnfolder]: 1/269 cut-off events. [2022-11-20 12:10:56,930 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 12:10:56,931 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. [2022-11-20 12:10:56,934 INFO L137 encePairwiseOnDemand]: 270/273 looper letters, 1 selfloop transitions, 0 changer transitions 1/269 dead transitions. [2022-11-20 12:10:56,934 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 269 transitions, 543 flow [2022-11-20 12:10:56,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 12:10:56,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 12:10:56,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 542 transitions. [2022-11-20 12:10:56,958 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9926739926739927 [2022-11-20 12:10:56,959 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 542 transitions. [2022-11-20 12:10:56,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 542 transitions. [2022-11-20 12:10:56,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:10:56,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 542 transitions. [2022-11-20 12:10:56,973 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) [2022-11-20 12:10:56,983 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) [2022-11-20 12:10:56,984 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) [2022-11-20 12:10:56,986 INFO L175 Difference]: Start difference. First operand has 272 places, 272 transitions, 547 flow. Second operand 2 states and 542 transitions. [2022-11-20 12:10:56,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 269 transitions, 543 flow [2022-11-20 12:10:56,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 269 transitions, 542 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:10:57,000 INFO L231 Difference]: Finished difference. Result has 272 places, 268 transitions, 538 flow [2022-11-20 12:10:57,003 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} [2022-11-20 12:10:57,009 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 0 predicate places. [2022-11-20 12:10:57,009 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 268 transitions, 538 flow [2022-11-20 12:10:57,010 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) [2022-11-20 12:10:57,010 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:10:57,011 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:57,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:10:57,011 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)] === [2022-11-20 12:10:57,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:57,013 INFO L85 PathProgramCache]: Analyzing trace with hash 561368629, now seen corresponding path program 1 times [2022-11-20 12:10:57,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:10:57,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723480645] [2022-11-20 12:10:57,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:57,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:10:57,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:57,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:57,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:10:57,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723480645] [2022-11-20 12:10:57,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723480645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:10:57,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:10:57,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:10:57,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911721061] [2022-11-20 12:10:57,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:57,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:10:57,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:10:57,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:10:57,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:10:57,277 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 273 [2022-11-20 12:10:57,279 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) [2022-11-20 12:10:57,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:10:57,279 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 273 [2022-11-20 12:10:57,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:10:57,384 INFO L130 PetriNetUnfolder]: 1/272 cut-off events. [2022-11-20 12:10:57,384 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:10:57,385 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. [2022-11-20 12:10:57,386 INFO L137 encePairwiseOnDemand]: 270/273 looper letters, 10 selfloop transitions, 2 changer transitions 0/272 dead transitions. [2022-11-20 12:10:57,386 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 272 transitions, 570 flow [2022-11-20 12:10:57,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:10:57,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:10:57,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 799 transitions. [2022-11-20 12:10:57,390 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9755799755799756 [2022-11-20 12:10:57,390 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 799 transitions. [2022-11-20 12:10:57,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 799 transitions. [2022-11-20 12:10:57,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:10:57,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 799 transitions. [2022-11-20 12:10:57,393 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) [2022-11-20 12:10:57,396 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) [2022-11-20 12:10:57,397 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) [2022-11-20 12:10:57,397 INFO L175 Difference]: Start difference. First operand has 272 places, 268 transitions, 538 flow. Second operand 3 states and 799 transitions. [2022-11-20 12:10:57,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 272 transitions, 570 flow [2022-11-20 12:10:57,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 272 transitions, 570 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:10:57,407 INFO L231 Difference]: Finished difference. Result has 274 places, 269 transitions, 550 flow [2022-11-20 12:10:57,408 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} [2022-11-20 12:10:57,408 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 2 predicate places. [2022-11-20 12:10:57,409 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 269 transitions, 550 flow [2022-11-20 12:10:57,409 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) [2022-11-20 12:10:57,410 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:10:57,410 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] [2022-11-20 12:10:57,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:10:57,411 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)] === [2022-11-20 12:10:57,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:57,412 INFO L85 PathProgramCache]: Analyzing trace with hash -282043731, now seen corresponding path program 1 times [2022-11-20 12:10:57,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:10:57,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644389302] [2022-11-20 12:10:57,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:57,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:10:57,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:57,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:57,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:10:57,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644389302] [2022-11-20 12:10:57,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644389302] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:10:57,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263312987] [2022-11-20 12:10:57,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:57,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:10:57,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bfaa52-393c-4663-9685-36985e939596/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:10:57,589 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bfaa52-393c-4663-9685-36985e939596/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:10:57,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bfaa52-393c-4663-9685-36985e939596/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:10:57,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:57,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:10:57,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:57,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:57,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:10:57,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:57,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263312987] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:10:57,884 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:10:57,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-20 12:10:57,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874704894] [2022-11-20 12:10:57,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:10:57,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:10:57,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:10:57,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:10:57,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:10:57,892 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 273 [2022-11-20 12:10:57,896 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) [2022-11-20 12:10:57,896 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:10:57,896 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 273 [2022-11-20 12:10:57,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:10:58,043 INFO L130 PetriNetUnfolder]: 1/279 cut-off events. [2022-11-20 12:10:58,044 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 12:10:58,044 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. [2022-11-20 12:10:58,045 INFO L137 encePairwiseOnDemand]: 267/273 looper letters, 11 selfloop transitions, 9 changer transitions 0/279 dead transitions. [2022-11-20 12:10:58,045 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 279 transitions, 612 flow [2022-11-20 12:10:58,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:10:58,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:10:58,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2371 transitions. [2022-11-20 12:10:58,052 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.964997964997965 [2022-11-20 12:10:58,052 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2371 transitions. [2022-11-20 12:10:58,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2371 transitions. [2022-11-20 12:10:58,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:10:58,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2371 transitions. [2022-11-20 12:10:58,060 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) [2022-11-20 12:10:58,066 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) [2022-11-20 12:10:58,068 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) [2022-11-20 12:10:58,068 INFO L175 Difference]: Start difference. First operand has 274 places, 269 transitions, 550 flow. Second operand 9 states and 2371 transitions. [2022-11-20 12:10:58,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 279 transitions, 612 flow [2022-11-20 12:10:58,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 279 transitions, 610 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:10:58,076 INFO L231 Difference]: Finished difference. Result has 284 places, 275 transitions, 598 flow [2022-11-20 12:10:58,076 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} [2022-11-20 12:10:58,079 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 12 predicate places. [2022-11-20 12:10:58,079 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 275 transitions, 598 flow [2022-11-20 12:10:58,081 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) [2022-11-20 12:10:58,081 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:10:58,081 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] [2022-11-20 12:10:58,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bfaa52-393c-4663-9685-36985e939596/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:10:58,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bfaa52-393c-4663-9685-36985e939596/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:10:58,288 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)] === [2022-11-20 12:10:58,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:58,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1558040659, now seen corresponding path program 2 times [2022-11-20 12:10:58,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:10:58,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072384550] [2022-11-20 12:10:58,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:58,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:10:58,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:58,494 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:58,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:10:58,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072384550] [2022-11-20 12:10:58,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072384550] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:10:58,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541550368] [2022-11-20 12:10:58,495 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:10:58,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:10:58,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bfaa52-393c-4663-9685-36985e939596/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:10:58,497 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bfaa52-393c-4663-9685-36985e939596/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:10:58,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bfaa52-393c-4663-9685-36985e939596/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:10:58,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:10:58,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:10:58,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 12:10:58,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:58,703 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 [2022-11-20 12:10:58,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:10:58,763 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 [2022-11-20 12:10:58,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:10:58,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:10:58,808 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:10:58,808 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 [2022-11-20 12:10:58,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:10:58,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:10:58,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:10:58,860 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:10:58,860 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 [2022-11-20 12:10:58,898 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:10:58,898 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:10:58,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541550368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:10:58,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:10:58,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2022-11-20 12:10:58,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252810595] [2022-11-20 12:10:58,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:58,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:10:58,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:10:58,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:10:58,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:10:58,904 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 273 [2022-11-20 12:10:58,906 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) [2022-11-20 12:10:58,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:10:58,907 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 273 [2022-11-20 12:10:58,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:10:59,719 INFO L130 PetriNetUnfolder]: 649/2115 cut-off events. [2022-11-20 12:10:59,719 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-20 12:10:59,727 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. [2022-11-20 12:10:59,739 INFO L137 encePairwiseOnDemand]: 254/273 looper letters, 108 selfloop transitions, 17 changer transitions 0/273 dead transitions. [2022-11-20 12:10:59,739 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 273 transitions, 844 flow [2022-11-20 12:10:59,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:10:59,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:10:59,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1414 transitions. [2022-11-20 12:10:59,744 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5754985754985755 [2022-11-20 12:10:59,744 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1414 transitions. [2022-11-20 12:10:59,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1414 transitions. [2022-11-20 12:10:59,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:10:59,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1414 transitions. [2022-11-20 12:10:59,749 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) [2022-11-20 12:10:59,755 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) [2022-11-20 12:10:59,756 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) [2022-11-20 12:10:59,756 INFO L175 Difference]: Start difference. First operand has 284 places, 275 transitions, 598 flow. Second operand 9 states and 1414 transitions. [2022-11-20 12:10:59,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 273 transitions, 844 flow [2022-11-20 12:10:59,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 273 transitions, 838 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-20 12:10:59,764 INFO L231 Difference]: Finished difference. Result has 289 places, 273 transitions, 622 flow [2022-11-20 12:10:59,765 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} [2022-11-20 12:10:59,766 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 17 predicate places. [2022-11-20 12:10:59,766 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 273 transitions, 622 flow [2022-11-20 12:10:59,767 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) [2022-11-20 12:10:59,767 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:10:59,768 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] [2022-11-20 12:10:59,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bfaa52-393c-4663-9685-36985e939596/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:10:59,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bfaa52-393c-4663-9685-36985e939596/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:10:59,974 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)] === [2022-11-20 12:10:59,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:59,975 INFO L85 PathProgramCache]: Analyzing trace with hash -446848116, now seen corresponding path program 1 times [2022-11-20 12:10:59,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:10:59,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410125551] [2022-11-20 12:10:59,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:59,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:00,266 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:00,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:00,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410125551] [2022-11-20 12:11:00,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410125551] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:11:00,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002001742] [2022-11-20 12:11:00,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:00,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:11:00,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bfaa52-393c-4663-9685-36985e939596/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:11:00,269 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bfaa52-393c-4663-9685-36985e939596/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:11:00,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bfaa52-393c-4663-9685-36985e939596/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:11:00,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:00,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:11:00,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:11:00,457 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:00,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:11:00,556 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:00,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002001742] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:11:00,557 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:11:00,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-20 12:11:00,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819270947] [2022-11-20 12:11:00,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:11:00,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 12:11:00,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:00,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 12:11:00,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:11:00,567 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 273 [2022-11-20 12:11:00,572 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) [2022-11-20 12:11:00,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:11:00,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 273 [2022-11-20 12:11:00,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:11:00,820 INFO L130 PetriNetUnfolder]: 1/297 cut-off events. [2022-11-20 12:11:00,820 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-20 12:11:00,821 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. [2022-11-20 12:11:00,822 INFO L137 encePairwiseOnDemand]: 267/273 looper letters, 19 selfloop transitions, 21 changer transitions 0/297 dead transitions. [2022-11-20 12:11:00,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 297 transitions, 802 flow [2022-11-20 12:11:00,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 12:11:00,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 12:11:00,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5525 transitions. [2022-11-20 12:11:00,834 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.963718820861678 [2022-11-20 12:11:00,834 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5525 transitions. [2022-11-20 12:11:00,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5525 transitions. [2022-11-20 12:11:00,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:11:00,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5525 transitions. [2022-11-20 12:11:00,851 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) [2022-11-20 12:11:00,863 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) [2022-11-20 12:11:00,865 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) [2022-11-20 12:11:00,866 INFO L175 Difference]: Start difference. First operand has 289 places, 273 transitions, 622 flow. Second operand 21 states and 5525 transitions. [2022-11-20 12:11:00,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 297 transitions, 802 flow [2022-11-20 12:11:00,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 297 transitions, 768 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-20 12:11:00,873 INFO L231 Difference]: Finished difference. Result has 306 places, 286 transitions, 718 flow [2022-11-20 12:11:00,874 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} [2022-11-20 12:11:00,874 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 34 predicate places. [2022-11-20 12:11:00,875 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 286 transitions, 718 flow [2022-11-20 12:11:00,877 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) [2022-11-20 12:11:00,877 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:11:00,877 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] [2022-11-20 12:11:00,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bfaa52-393c-4663-9685-36985e939596/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:11:01,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bfaa52-393c-4663-9685-36985e939596/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:11:01,084 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)] === [2022-11-20 12:11:01,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:01,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1811189132, now seen corresponding path program 2 times [2022-11-20 12:11:01,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:01,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628145389] [2022-11-20 12:11:01,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:01,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:01,558 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:01,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:01,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628145389] [2022-11-20 12:11:01,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628145389] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:11:01,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304340259] [2022-11-20 12:11:01,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:11:01,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:11:01,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bfaa52-393c-4663-9685-36985e939596/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:11:01,563 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bfaa52-393c-4663-9685-36985e939596/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:11:01,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bfaa52-393c-4663-9685-36985e939596/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:11:01,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:11:01,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:11:01,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 12:11:01,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:11:01,718 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 [2022-11-20 12:11:01,739 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 [2022-11-20 12:11:01,772 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:11:01,772 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 [2022-11-20 12:11:01,818 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:11:01,819 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 [2022-11-20 12:11:01,852 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-20 12:11:01,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:11:01,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304340259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:01,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:11:01,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 21 [2022-11-20 12:11:01,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625825908] [2022-11-20 12:11:01,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:01,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:11:01,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:01,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:11:01,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-11-20 12:11:01,855 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 273 [2022-11-20 12:11:01,857 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) [2022-11-20 12:11:01,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:11:01,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 273 [2022-11-20 12:11:01,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:11:02,626 INFO L130 PetriNetUnfolder]: 649/2133 cut-off events. [2022-11-20 12:11:02,626 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2022-11-20 12:11:02,631 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. [2022-11-20 12:11:02,638 INFO L137 encePairwiseOnDemand]: 261/273 looper letters, 109 selfloop transitions, 10 changer transitions 0/284 dead transitions. [2022-11-20 12:11:02,638 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 284 transitions, 952 flow [2022-11-20 12:11:02,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:11:02,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:11:02,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1003 transitions. [2022-11-20 12:11:02,641 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6123321123321124 [2022-11-20 12:11:02,642 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1003 transitions. [2022-11-20 12:11:02,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1003 transitions. [2022-11-20 12:11:02,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:11:02,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1003 transitions. [2022-11-20 12:11:02,645 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) [2022-11-20 12:11:02,648 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) [2022-11-20 12:11:02,648 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) [2022-11-20 12:11:02,648 INFO L175 Difference]: Start difference. First operand has 306 places, 286 transitions, 718 flow. Second operand 6 states and 1003 transitions. [2022-11-20 12:11:02,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 284 transitions, 952 flow [2022-11-20 12:11:02,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 284 transitions, 928 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-11-20 12:11:02,660 INFO L231 Difference]: Finished difference. Result has 303 places, 284 transitions, 710 flow [2022-11-20 12:11:02,660 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} [2022-11-20 12:11:02,662 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 31 predicate places. [2022-11-20 12:11:02,663 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 284 transitions, 710 flow [2022-11-20 12:11:02,664 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) [2022-11-20 12:11:02,664 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:11:02,664 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] [2022-11-20 12:11:02,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bfaa52-393c-4663-9685-36985e939596/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:11:02,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bfaa52-393c-4663-9685-36985e939596/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 12:11:02,870 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)] === [2022-11-20 12:11:02,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:02,870 INFO L85 PathProgramCache]: Analyzing trace with hash -2075465824, now seen corresponding path program 1 times [2022-11-20 12:11:02,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:02,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772588788] [2022-11-20 12:11:02,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:02,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:02,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:03,376 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:03,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:03,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772588788] [2022-11-20 12:11:03,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772588788] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:11:03,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545782932] [2022-11-20 12:11:03,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:03,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:11:03,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bfaa52-393c-4663-9685-36985e939596/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:11:03,379 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bfaa52-393c-4663-9685-36985e939596/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:11:03,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bfaa52-393c-4663-9685-36985e939596/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:11:03,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:03,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 12:11:03,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:11:03,640 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:03,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:11:03,863 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:03,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545782932] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:11:03,864 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:11:03,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-20 12:11:03,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501090249] [2022-11-20 12:11:03,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:11:03,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 12:11:03,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:03,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 12:11:03,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-20 12:11:03,872 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 273 [2022-11-20 12:11:03,892 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) [2022-11-20 12:11:03,894 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:11:03,894 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 273 [2022-11-20 12:11:03,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:11:04,277 INFO L130 PetriNetUnfolder]: 1/310 cut-off events. [2022-11-20 12:11:04,277 INFO L131 PetriNetUnfolder]: For 123/123 co-relation queries the response was YES. [2022-11-20 12:11:04,278 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. [2022-11-20 12:11:04,279 INFO L137 encePairwiseOnDemand]: 267/273 looper letters, 25 selfloop transitions, 30 changer transitions 0/310 dead transitions. [2022-11-20 12:11:04,279 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 310 transitions, 960 flow [2022-11-20 12:11:04,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 12:11:04,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-20 12:11:04,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7888 transitions. [2022-11-20 12:11:04,293 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9631257631257631 [2022-11-20 12:11:04,293 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 7888 transitions. [2022-11-20 12:11:04,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 7888 transitions. [2022-11-20 12:11:04,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:11:04,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 7888 transitions. [2022-11-20 12:11:04,316 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) [2022-11-20 12:11:04,329 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) [2022-11-20 12:11:04,332 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) [2022-11-20 12:11:04,332 INFO L175 Difference]: Start difference. First operand has 303 places, 284 transitions, 710 flow. Second operand 30 states and 7888 transitions. [2022-11-20 12:11:04,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 310 transitions, 960 flow [2022-11-20 12:11:04,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 310 transitions, 940 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:11:04,340 INFO L231 Difference]: Finished difference. Result has 331 places, 294 transitions, 842 flow [2022-11-20 12:11:04,341 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} [2022-11-20 12:11:04,341 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 59 predicate places. [2022-11-20 12:11:04,341 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 294 transitions, 842 flow [2022-11-20 12:11:04,343 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) [2022-11-20 12:11:04,344 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:11:04,344 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] [2022-11-20 12:11:04,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bfaa52-393c-4663-9685-36985e939596/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:11:04,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bfaa52-393c-4663-9685-36985e939596/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:11:04,550 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)] === [2022-11-20 12:11:04,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:04,551 INFO L85 PathProgramCache]: Analyzing trace with hash -523469032, now seen corresponding path program 2 times [2022-11-20 12:11:04,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:04,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659439317] [2022-11-20 12:11:04,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:04,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:05,204 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-20 12:11:05,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:05,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659439317] [2022-11-20 12:11:05,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659439317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:05,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:05,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:11:05,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402792330] [2022-11-20 12:11:05,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:05,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:11:05,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:05,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:11:05,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:11:05,208 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 273 [2022-11-20 12:11:05,211 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) [2022-11-20 12:11:05,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:11:05,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 273 [2022-11-20 12:11:05,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:11:06,149 INFO L130 PetriNetUnfolder]: 820/2542 cut-off events. [2022-11-20 12:11:06,149 INFO L131 PetriNetUnfolder]: For 118/118 co-relation queries the response was YES. [2022-11-20 12:11:06,154 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. [2022-11-20 12:11:06,163 INFO L137 encePairwiseOnDemand]: 267/273 looper letters, 116 selfloop transitions, 5 changer transitions 0/293 dead transitions. [2022-11-20 12:11:06,163 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 293 transitions, 1082 flow [2022-11-20 12:11:06,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:11:06,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:11:06,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 986 transitions. [2022-11-20 12:11:06,167 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6019536019536019 [2022-11-20 12:11:06,167 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 986 transitions. [2022-11-20 12:11:06,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 986 transitions. [2022-11-20 12:11:06,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:11:06,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 986 transitions. [2022-11-20 12:11:06,171 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) [2022-11-20 12:11:06,174 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) [2022-11-20 12:11:06,175 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) [2022-11-20 12:11:06,175 INFO L175 Difference]: Start difference. First operand has 331 places, 294 transitions, 842 flow. Second operand 6 states and 986 transitions. [2022-11-20 12:11:06,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 293 transitions, 1082 flow [2022-11-20 12:11:06,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 293 transitions, 1036 flow, removed 5 selfloop flow, removed 18 redundant places. [2022-11-20 12:11:06,184 INFO L231 Difference]: Finished difference. Result has 317 places, 293 transitions, 804 flow [2022-11-20 12:11:06,185 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} [2022-11-20 12:11:06,185 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 45 predicate places. [2022-11-20 12:11:06,185 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 293 transitions, 804 flow [2022-11-20 12:11:06,186 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) [2022-11-20 12:11:06,186 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:11:06,186 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] [2022-11-20 12:11:06,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:11:06,187 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)] === [2022-11-20 12:11:06,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:06,187 INFO L85 PathProgramCache]: Analyzing trace with hash -2100327872, now seen corresponding path program 1 times [2022-11-20 12:11:06,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:06,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133391168] [2022-11-20 12:11:06,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:06,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:06,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:07,246 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-20 12:11:07,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:07,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133391168] [2022-11-20 12:11:07,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133391168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:07,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:07,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:11:07,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34602581] [2022-11-20 12:11:07,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:07,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:11:07,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:07,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:11:07,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:11:07,249 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 273 [2022-11-20 12:11:07,250 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) [2022-11-20 12:11:07,250 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:11:07,250 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 273 [2022-11-20 12:11:07,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:11:08,822 INFO L130 PetriNetUnfolder]: 1446/4317 cut-off events. [2022-11-20 12:11:08,823 INFO L131 PetriNetUnfolder]: For 126/126 co-relation queries the response was YES. [2022-11-20 12:11:08,830 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. [2022-11-20 12:11:08,846 INFO L137 encePairwiseOnDemand]: 245/273 looper letters, 217 selfloop transitions, 74 changer transitions 0/465 dead transitions. [2022-11-20 12:11:08,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 465 transitions, 1730 flow [2022-11-20 12:11:08,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:11:08,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:11:08,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1169 transitions. [2022-11-20 12:11:08,850 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7136752136752137 [2022-11-20 12:11:08,850 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1169 transitions. [2022-11-20 12:11:08,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1169 transitions. [2022-11-20 12:11:08,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:11:08,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1169 transitions. [2022-11-20 12:11:08,854 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) [2022-11-20 12:11:08,857 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) [2022-11-20 12:11:08,857 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) [2022-11-20 12:11:08,858 INFO L175 Difference]: Start difference. First operand has 317 places, 293 transitions, 804 flow. Second operand 6 states and 1169 transitions. [2022-11-20 12:11:08,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 465 transitions, 1730 flow [2022-11-20 12:11:08,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 465 transitions, 1720 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:11:08,867 INFO L231 Difference]: Finished difference. Result has 321 places, 360 transitions, 1266 flow [2022-11-20 12:11:08,868 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} [2022-11-20 12:11:08,869 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 49 predicate places. [2022-11-20 12:11:08,869 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 360 transitions, 1266 flow [2022-11-20 12:11:08,870 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) [2022-11-20 12:11:08,870 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:11:08,870 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] [2022-11-20 12:11:08,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 12:11:08,871 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)] === [2022-11-20 12:11:08,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:08,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1904946281, now seen corresponding path program 1 times [2022-11-20 12:11:08,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:08,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99104992] [2022-11-20 12:11:08,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:08,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:08,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:09,668 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-20 12:11:09,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:09,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99104992] [2022-11-20 12:11:09,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99104992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:09,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:09,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:11:09,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452572763] [2022-11-20 12:11:09,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:09,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:11:09,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:09,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:11:09,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:11:09,672 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 273 [2022-11-20 12:11:09,674 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) [2022-11-20 12:11:09,674 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:11:09,674 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 273 [2022-11-20 12:11:09,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:11:11,054 INFO L130 PetriNetUnfolder]: 1207/3986 cut-off events. [2022-11-20 12:11:11,054 INFO L131 PetriNetUnfolder]: For 1354/1439 co-relation queries the response was YES. [2022-11-20 12:11:11,062 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. [2022-11-20 12:11:11,077 INFO L137 encePairwiseOnDemand]: 267/273 looper letters, 169 selfloop transitions, 5 changer transitions 0/359 dead transitions. [2022-11-20 12:11:11,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 359 transitions, 1612 flow [2022-11-20 12:11:11,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:11:11,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:11:11,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1049 transitions. [2022-11-20 12:11:11,081 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6404151404151404 [2022-11-20 12:11:11,081 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1049 transitions. [2022-11-20 12:11:11,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1049 transitions. [2022-11-20 12:11:11,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:11:11,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1049 transitions. [2022-11-20 12:11:11,084 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) [2022-11-20 12:11:11,087 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) [2022-11-20 12:11:11,088 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) [2022-11-20 12:11:11,088 INFO L175 Difference]: Start difference. First operand has 321 places, 360 transitions, 1266 flow. Second operand 6 states and 1049 transitions. [2022-11-20 12:11:11,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 359 transitions, 1612 flow [2022-11-20 12:11:11,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 359 transitions, 1612 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:11:11,099 INFO L231 Difference]: Finished difference. Result has 325 places, 359 transitions, 1274 flow [2022-11-20 12:11:11,101 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} [2022-11-20 12:11:11,102 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 53 predicate places. [2022-11-20 12:11:11,102 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 359 transitions, 1274 flow [2022-11-20 12:11:11,102 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) [2022-11-20 12:11:11,103 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:11:11,103 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] [2022-11-20 12:11:11,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 12:11:11,103 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)] === [2022-11-20 12:11:11,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:11,104 INFO L85 PathProgramCache]: Analyzing trace with hash 2072698922, now seen corresponding path program 1 times [2022-11-20 12:11:11,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:11,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068219063] [2022-11-20 12:11:11,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:11,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:11,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:11,752 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-20 12:11:11,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:11,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068219063] [2022-11-20 12:11:11,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068219063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:11,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:11,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:11:11,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949366957] [2022-11-20 12:11:11,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:11,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:11:11,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:11,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:11:11,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:11:11,756 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 273 [2022-11-20 12:11:11,757 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) [2022-11-20 12:11:11,757 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:11:11,757 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 273 [2022-11-20 12:11:11,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:11:12,893 INFO L130 PetriNetUnfolder]: 1207/3985 cut-off events. [2022-11-20 12:11:12,893 INFO L131 PetriNetUnfolder]: For 1354/1439 co-relation queries the response was YES. [2022-11-20 12:11:12,905 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. [2022-11-20 12:11:12,929 INFO L137 encePairwiseOnDemand]: 267/273 looper letters, 170 selfloop transitions, 5 changer transitions 0/358 dead transitions. [2022-11-20 12:11:12,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 358 transitions, 1622 flow [2022-11-20 12:11:12,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:11:12,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:11:12,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1038 transitions. [2022-11-20 12:11:12,935 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6336996336996337 [2022-11-20 12:11:12,935 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1038 transitions. [2022-11-20 12:11:12,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1038 transitions. [2022-11-20 12:11:12,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:11:12,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1038 transitions. [2022-11-20 12:11:12,940 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) [2022-11-20 12:11:12,943 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) [2022-11-20 12:11:12,943 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) [2022-11-20 12:11:12,944 INFO L175 Difference]: Start difference. First operand has 325 places, 359 transitions, 1274 flow. Second operand 6 states and 1038 transitions. [2022-11-20 12:11:12,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 358 transitions, 1622 flow [2022-11-20 12:11:12,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 358 transitions, 1612 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:11:12,956 INFO L231 Difference]: Finished difference. Result has 324 places, 358 transitions, 1272 flow [2022-11-20 12:11:12,957 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} [2022-11-20 12:11:12,958 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 52 predicate places. [2022-11-20 12:11:12,958 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 358 transitions, 1272 flow [2022-11-20 12:11:12,959 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) [2022-11-20 12:11:12,959 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:11:12,959 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] [2022-11-20 12:11:12,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 12:11:12,960 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)] === [2022-11-20 12:11:12,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:12,960 INFO L85 PathProgramCache]: Analyzing trace with hash 2000227336, now seen corresponding path program 1 times [2022-11-20 12:11:12,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:12,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140665897] [2022-11-20 12:11:12,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:12,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:13,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:13,674 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-20 12:11:13,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:13,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140665897] [2022-11-20 12:11:13,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140665897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:13,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:13,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:11:13,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878718186] [2022-11-20 12:11:13,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:13,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:11:13,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:13,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:11:13,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:11:13,680 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 273 [2022-11-20 12:11:13,681 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) [2022-11-20 12:11:13,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:11:13,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 273 [2022-11-20 12:11:13,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:11:15,083 INFO L130 PetriNetUnfolder]: 1207/3984 cut-off events. [2022-11-20 12:11:15,083 INFO L131 PetriNetUnfolder]: For 1357/1442 co-relation queries the response was YES. [2022-11-20 12:11:15,096 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. [2022-11-20 12:11:15,111 INFO L137 encePairwiseOnDemand]: 267/273 looper letters, 169 selfloop transitions, 5 changer transitions 0/357 dead transitions. [2022-11-20 12:11:15,111 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 357 transitions, 1618 flow [2022-11-20 12:11:15,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:11:15,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:11:15,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1037 transitions. [2022-11-20 12:11:15,114 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6330891330891331 [2022-11-20 12:11:15,114 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1037 transitions. [2022-11-20 12:11:15,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1037 transitions. [2022-11-20 12:11:15,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:11:15,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1037 transitions. [2022-11-20 12:11:15,122 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) [2022-11-20 12:11:15,125 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) [2022-11-20 12:11:15,126 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) [2022-11-20 12:11:15,126 INFO L175 Difference]: Start difference. First operand has 324 places, 358 transitions, 1272 flow. Second operand 6 states and 1037 transitions. [2022-11-20 12:11:15,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 357 transitions, 1618 flow [2022-11-20 12:11:15,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 357 transitions, 1608 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:11:15,140 INFO L231 Difference]: Finished difference. Result has 323 places, 357 transitions, 1270 flow [2022-11-20 12:11:15,141 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} [2022-11-20 12:11:15,143 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 51 predicate places. [2022-11-20 12:11:15,144 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 357 transitions, 1270 flow [2022-11-20 12:11:15,144 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) [2022-11-20 12:11:15,144 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:11:15,145 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] [2022-11-20 12:11:15,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 12:11:15,145 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)] === [2022-11-20 12:11:15,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:15,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1869039751, now seen corresponding path program 1 times [2022-11-20 12:11:15,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:15,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620423081] [2022-11-20 12:11:15,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:15,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:15,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:16,095 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-20 12:11:16,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:16,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620423081] [2022-11-20 12:11:16,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620423081] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:16,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:16,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:11:16,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406901454] [2022-11-20 12:11:16,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:16,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:11:16,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:16,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:11:16,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:11:16,099 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 273 [2022-11-20 12:11:16,100 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) [2022-11-20 12:11:16,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:11:16,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 273 [2022-11-20 12:11:16,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:11:17,969 INFO L130 PetriNetUnfolder]: 1524/4610 cut-off events. [2022-11-20 12:11:17,969 INFO L131 PetriNetUnfolder]: For 1497/1596 co-relation queries the response was YES. [2022-11-20 12:11:17,978 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. [2022-11-20 12:11:17,990 INFO L137 encePairwiseOnDemand]: 250/273 looper letters, 251 selfloop transitions, 130 changer transitions 0/566 dead transitions. [2022-11-20 12:11:17,990 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 566 transitions, 2826 flow [2022-11-20 12:11:17,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:11:17,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:11:17,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1196 transitions. [2022-11-20 12:11:17,994 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7301587301587301 [2022-11-20 12:11:17,994 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1196 transitions. [2022-11-20 12:11:17,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1196 transitions. [2022-11-20 12:11:17,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:11:17,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1196 transitions. [2022-11-20 12:11:17,998 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) [2022-11-20 12:11:18,002 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) [2022-11-20 12:11:18,003 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) [2022-11-20 12:11:18,003 INFO L175 Difference]: Start difference. First operand has 323 places, 357 transitions, 1270 flow. Second operand 6 states and 1196 transitions. [2022-11-20 12:11:18,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 566 transitions, 2826 flow [2022-11-20 12:11:18,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 566 transitions, 2816 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:11:18,024 INFO L231 Difference]: Finished difference. Result has 328 places, 486 transitions, 2488 flow [2022-11-20 12:11:18,025 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} [2022-11-20 12:11:18,026 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 56 predicate places. [2022-11-20 12:11:18,026 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 486 transitions, 2488 flow [2022-11-20 12:11:18,027 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) [2022-11-20 12:11:18,027 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:11:18,027 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] [2022-11-20 12:11:18,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 12:11:18,028 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)] === [2022-11-20 12:11:18,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:18,028 INFO L85 PathProgramCache]: Analyzing trace with hash -45682255, now seen corresponding path program 1 times [2022-11-20 12:11:18,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:18,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079701955] [2022-11-20 12:11:18,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:18,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:18,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:19,060 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-20 12:11:19,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:19,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079701955] [2022-11-20 12:11:19,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079701955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:19,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:19,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:11:19,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10868397] [2022-11-20 12:11:19,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:19,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:11:19,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:19,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:11:19,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:11:19,064 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 273 [2022-11-20 12:11:19,065 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) [2022-11-20 12:11:19,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:11:19,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 273 [2022-11-20 12:11:19,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:11:21,090 INFO L130 PetriNetUnfolder]: 1622/5396 cut-off events. [2022-11-20 12:11:21,090 INFO L131 PetriNetUnfolder]: For 3832/4019 co-relation queries the response was YES. [2022-11-20 12:11:21,105 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. [2022-11-20 12:11:21,126 INFO L137 encePairwiseOnDemand]: 251/273 looper letters, 375 selfloop transitions, 129 changer transitions 5/694 dead transitions. [2022-11-20 12:11:21,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 694 transitions, 4544 flow [2022-11-20 12:11:21,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:11:21,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:11:21,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1195 transitions. [2022-11-20 12:11:21,132 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7295482295482295 [2022-11-20 12:11:21,132 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1195 transitions. [2022-11-20 12:11:21,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1195 transitions. [2022-11-20 12:11:21,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:11:21,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1195 transitions. [2022-11-20 12:11:21,136 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) [2022-11-20 12:11:21,139 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) [2022-11-20 12:11:21,140 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) [2022-11-20 12:11:21,140 INFO L175 Difference]: Start difference. First operand has 328 places, 486 transitions, 2488 flow. Second operand 6 states and 1195 transitions. [2022-11-20 12:11:21,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 694 transitions, 4544 flow [2022-11-20 12:11:21,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 694 transitions, 4544 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:11:21,168 INFO L231 Difference]: Finished difference. Result has 338 places, 613 transitions, 3954 flow [2022-11-20 12:11:21,168 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} [2022-11-20 12:11:21,169 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 66 predicate places. [2022-11-20 12:11:21,169 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 613 transitions, 3954 flow [2022-11-20 12:11:21,170 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) [2022-11-20 12:11:21,170 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:11:21,170 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] [2022-11-20 12:11:21,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 12:11:21,171 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)] === [2022-11-20 12:11:21,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:21,172 INFO L85 PathProgramCache]: Analyzing trace with hash 626466260, now seen corresponding path program 1 times [2022-11-20 12:11:21,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:21,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635415191] [2022-11-20 12:11:21,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:21,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:21,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:22,108 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-20 12:11:22,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:22,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635415191] [2022-11-20 12:11:22,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635415191] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:22,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:22,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:11:22,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499354709] [2022-11-20 12:11:22,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:22,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:11:22,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:22,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:11:22,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:11:22,112 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 273 [2022-11-20 12:11:22,113 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) [2022-11-20 12:11:22,113 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:11:22,113 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 273 [2022-11-20 12:11:22,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:11:23,832 INFO L130 PetriNetUnfolder]: 1747/5569 cut-off events. [2022-11-20 12:11:23,833 INFO L131 PetriNetUnfolder]: For 5722/5750 co-relation queries the response was YES. [2022-11-20 12:11:23,850 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. [2022-11-20 12:11:23,873 INFO L137 encePairwiseOnDemand]: 254/273 looper letters, 445 selfloop transitions, 84 changer transitions 0/711 dead transitions. [2022-11-20 12:11:23,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 711 transitions, 5526 flow [2022-11-20 12:11:23,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:11:23,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:11:23,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1109 transitions. [2022-11-20 12:11:23,878 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6770451770451771 [2022-11-20 12:11:23,878 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1109 transitions. [2022-11-20 12:11:23,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1109 transitions. [2022-11-20 12:11:23,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:11:23,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1109 transitions. [2022-11-20 12:11:23,884 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) [2022-11-20 12:11:23,888 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) [2022-11-20 12:11:23,889 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) [2022-11-20 12:11:23,889 INFO L175 Difference]: Start difference. First operand has 338 places, 613 transitions, 3954 flow. Second operand 6 states and 1109 transitions. [2022-11-20 12:11:23,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 711 transitions, 5526 flow [2022-11-20 12:11:23,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 711 transitions, 5272 flow, removed 127 selfloop flow, removed 0 redundant places. [2022-11-20 12:11:23,933 INFO L231 Difference]: Finished difference. Result has 347 places, 684 transitions, 4490 flow [2022-11-20 12:11:23,934 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} [2022-11-20 12:11:23,935 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 75 predicate places. [2022-11-20 12:11:23,935 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 684 transitions, 4490 flow [2022-11-20 12:11:23,936 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) [2022-11-20 12:11:23,936 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:11:23,936 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] [2022-11-20 12:11:23,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 12:11:23,937 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)] === [2022-11-20 12:11:23,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:23,938 INFO L85 PathProgramCache]: Analyzing trace with hash 179601006, now seen corresponding path program 1 times [2022-11-20 12:11:23,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:23,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276849958] [2022-11-20 12:11:23,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:23,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:26,809 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-20 12:11:26,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:26,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276849958] [2022-11-20 12:11:26,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276849958] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:26,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:26,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 12:11:26,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282455500] [2022-11-20 12:11:26,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:26,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 12:11:26,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:26,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 12:11:26,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-11-20 12:11:26,813 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 273 [2022-11-20 12:11:26,816 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) [2022-11-20 12:11:26,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:11:26,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 273 [2022-11-20 12:11:26,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:11:32,850 INFO L130 PetriNetUnfolder]: 2720/7443 cut-off events. [2022-11-20 12:11:32,850 INFO L131 PetriNetUnfolder]: For 9126/9139 co-relation queries the response was YES. [2022-11-20 12:11:32,865 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. [2022-11-20 12:11:32,889 INFO L137 encePairwiseOnDemand]: 233/273 looper letters, 788 selfloop transitions, 209 changer transitions 16/1148 dead transitions. [2022-11-20 12:11:32,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 1148 transitions, 9058 flow [2022-11-20 12:11:32,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-20 12:11:32,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-11-20 12:11:32,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 5109 transitions. [2022-11-20 12:11:32,898 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43521594684385384 [2022-11-20 12:11:32,898 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 5109 transitions. [2022-11-20 12:11:32,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 5109 transitions. [2022-11-20 12:11:32,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:11:32,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 5109 transitions. [2022-11-20 12:11:32,908 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) [2022-11-20 12:11:32,922 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) [2022-11-20 12:11:32,926 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) [2022-11-20 12:11:32,926 INFO L175 Difference]: Start difference. First operand has 347 places, 684 transitions, 4490 flow. Second operand 43 states and 5109 transitions. [2022-11-20 12:11:32,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 1148 transitions, 9058 flow [2022-11-20 12:11:32,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 1148 transitions, 8986 flow, removed 36 selfloop flow, removed 0 redundant places. [2022-11-20 12:11:33,008 INFO L231 Difference]: Finished difference. Result has 398 places, 757 transitions, 5652 flow [2022-11-20 12:11:33,009 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} [2022-11-20 12:11:33,009 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 126 predicate places. [2022-11-20 12:11:33,010 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 757 transitions, 5652 flow [2022-11-20 12:11:33,011 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) [2022-11-20 12:11:33,011 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:11:33,011 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] [2022-11-20 12:11:33,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 12:11:33,011 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)] === [2022-11-20 12:11:33,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:33,012 INFO L85 PathProgramCache]: Analyzing trace with hash -199762916, now seen corresponding path program 2 times [2022-11-20 12:11:33,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:33,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523389761] [2022-11-20 12:11:33,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:33,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:33,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:36,037 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-20 12:11:36,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:36,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523389761] [2022-11-20 12:11:36,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523389761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:36,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:36,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 12:11:36,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490218130] [2022-11-20 12:11:36,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:36,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 12:11:36,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:36,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 12:11:36,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-11-20 12:11:36,043 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 273 [2022-11-20 12:11:36,045 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) [2022-11-20 12:11:36,046 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:11:36,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 273 [2022-11-20 12:11:36,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:11:43,073 INFO L130 PetriNetUnfolder]: 4130/11398 cut-off events. [2022-11-20 12:11:43,073 INFO L131 PetriNetUnfolder]: For 19334/19360 co-relation queries the response was YES. [2022-11-20 12:11:43,118 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. [2022-11-20 12:11:43,156 INFO L137 encePairwiseOnDemand]: 222/273 looper letters, 1032 selfloop transitions, 327 changer transitions 16/1510 dead transitions. [2022-11-20 12:11:43,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 1510 transitions, 13065 flow [2022-11-20 12:11:43,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-20 12:11:43,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-20 12:11:43,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 4726 transitions. [2022-11-20 12:11:43,163 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45556198187777136 [2022-11-20 12:11:43,163 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 4726 transitions. [2022-11-20 12:11:43,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 4726 transitions. [2022-11-20 12:11:43,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:11:43,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 4726 transitions. [2022-11-20 12:11:43,290 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) [2022-11-20 12:11:43,305 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) [2022-11-20 12:11:43,309 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) [2022-11-20 12:11:43,309 INFO L175 Difference]: Start difference. First operand has 398 places, 757 transitions, 5652 flow. Second operand 38 states and 4726 transitions. [2022-11-20 12:11:43,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 1510 transitions, 13065 flow [2022-11-20 12:11:43,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 1510 transitions, 12953 flow, removed 5 selfloop flow, removed 21 redundant places. [2022-11-20 12:11:43,442 INFO L231 Difference]: Finished difference. Result has 427 places, 891 transitions, 8297 flow [2022-11-20 12:11:43,443 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} [2022-11-20 12:11:43,444 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 155 predicate places. [2022-11-20 12:11:43,444 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 891 transitions, 8297 flow [2022-11-20 12:11:43,445 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) [2022-11-20 12:11:43,445 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:11:43,445 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] [2022-11-20 12:11:43,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 12:11:43,445 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)] === [2022-11-20 12:11:43,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:43,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1134777100, now seen corresponding path program 3 times [2022-11-20 12:11:43,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:43,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147465164] [2022-11-20 12:11:43,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:43,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:43,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:46,185 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-20 12:11:46,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:46,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147465164] [2022-11-20 12:11:46,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147465164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:46,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:46,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 12:11:46,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869026478] [2022-11-20 12:11:46,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:46,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 12:11:46,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:46,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 12:11:46,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2022-11-20 12:11:46,189 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 273 [2022-11-20 12:11:46,192 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) [2022-11-20 12:11:46,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:11:46,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 273 [2022-11-20 12:11:46,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:11:54,552 INFO L130 PetriNetUnfolder]: 5251/14971 cut-off events. [2022-11-20 12:11:54,553 INFO L131 PetriNetUnfolder]: For 34916/35142 co-relation queries the response was YES. [2022-11-20 12:11:54,620 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. [2022-11-20 12:11:54,662 INFO L137 encePairwiseOnDemand]: 226/273 looper letters, 1156 selfloop transitions, 407 changer transitions 12/1712 dead transitions. [2022-11-20 12:11:54,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 1712 transitions, 17728 flow [2022-11-20 12:11:54,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 12:11:54,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-20 12:11:54,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 4565 transitions. [2022-11-20 12:11:54,672 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4644892144892145 [2022-11-20 12:11:54,672 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 4565 transitions. [2022-11-20 12:11:54,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 4565 transitions. [2022-11-20 12:11:54,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:11:54,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 4565 transitions. [2022-11-20 12:11:54,684 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) [2022-11-20 12:11:54,697 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) [2022-11-20 12:11:54,701 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) [2022-11-20 12:11:54,701 INFO L175 Difference]: Start difference. First operand has 427 places, 891 transitions, 8297 flow. Second operand 36 states and 4565 transitions. [2022-11-20 12:11:54,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 1712 transitions, 17728 flow [2022-11-20 12:11:54,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 1712 transitions, 17549 flow, removed 0 selfloop flow, removed 23 redundant places. [2022-11-20 12:11:55,027 INFO L231 Difference]: Finished difference. Result has 459 places, 1078 transitions, 12137 flow [2022-11-20 12:11:55,028 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} [2022-11-20 12:11:55,028 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 187 predicate places. [2022-11-20 12:11:55,029 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 1078 transitions, 12137 flow [2022-11-20 12:11:55,030 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) [2022-11-20 12:11:55,030 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:11:55,030 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] [2022-11-20 12:11:55,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 12:11:55,031 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)] === [2022-11-20 12:11:55,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:55,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1983941384, now seen corresponding path program 4 times [2022-11-20 12:11:55,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:55,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254354753] [2022-11-20 12:11:55,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:55,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:55,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:57,941 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-20 12:11:57,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:57,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254354753] [2022-11-20 12:11:57,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254354753] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:57,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:57,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 12:11:57,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978731644] [2022-11-20 12:11:57,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:57,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 12:11:57,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:57,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 12:11:57,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:11:57,947 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 273 [2022-11-20 12:11:57,948 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) [2022-11-20 12:11:57,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:11:57,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 273 [2022-11-20 12:11:57,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:12:07,714 INFO L130 PetriNetUnfolder]: 8227/23662 cut-off events. [2022-11-20 12:12:07,714 INFO L131 PetriNetUnfolder]: For 68591/68804 co-relation queries the response was YES. [2022-11-20 12:12:07,885 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. [2022-11-20 12:12:08,122 INFO L137 encePairwiseOnDemand]: 237/273 looper letters, 970 selfloop transitions, 528 changer transitions 6/1651 dead transitions. [2022-11-20 12:12:08,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 1651 transitions, 20890 flow [2022-11-20 12:12:08,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 12:12:08,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-20 12:12:08,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2651 transitions. [2022-11-20 12:12:08,131 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5110854058222479 [2022-11-20 12:12:08,131 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2651 transitions. [2022-11-20 12:12:08,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2651 transitions. [2022-11-20 12:12:08,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:12:08,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2651 transitions. [2022-11-20 12:12:08,147 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) [2022-11-20 12:12:08,152 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) [2022-11-20 12:12:08,152 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) [2022-11-20 12:12:08,152 INFO L175 Difference]: Start difference. First operand has 459 places, 1078 transitions, 12137 flow. Second operand 19 states and 2651 transitions. [2022-11-20 12:12:08,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 1651 transitions, 20890 flow [2022-11-20 12:12:08,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 1651 transitions, 20611 flow, removed 103 selfloop flow, removed 13 redundant places. [2022-11-20 12:12:08,556 INFO L231 Difference]: Finished difference. Result has 474 places, 1279 transitions, 17520 flow [2022-11-20 12:12:08,557 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} [2022-11-20 12:12:08,557 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 202 predicate places. [2022-11-20 12:12:08,557 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 1279 transitions, 17520 flow [2022-11-20 12:12:08,558 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) [2022-11-20 12:12:08,558 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:12:08,558 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] [2022-11-20 12:12:08,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 12:12:08,558 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)] === [2022-11-20 12:12:08,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:08,559 INFO L85 PathProgramCache]: Analyzing trace with hash -521863450, now seen corresponding path program 5 times [2022-11-20 12:12:08,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:12:08,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896203917] [2022-11-20 12:12:08,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:12:08,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:12:08,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:12:10,551 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-20 12:12:10,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:12:10,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896203917] [2022-11-20 12:12:10,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896203917] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:12:10,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:12:10,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 12:12:10,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618055255] [2022-11-20 12:12:10,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:12:10,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 12:12:10,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:12:10,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 12:12:10,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2022-11-20 12:12:10,556 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 273 [2022-11-20 12:12:10,557 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) [2022-11-20 12:12:10,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:12:10,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 273 [2022-11-20 12:12:10,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:12:27,981 INFO L130 PetriNetUnfolder]: 11496/31608 cut-off events. [2022-11-20 12:12:27,981 INFO L131 PetriNetUnfolder]: For 109042/109103 co-relation queries the response was YES. [2022-11-20 12:12:28,246 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. [2022-11-20 12:12:28,343 INFO L137 encePairwiseOnDemand]: 222/273 looper letters, 1264 selfloop transitions, 680 changer transitions 16/2095 dead transitions. [2022-11-20 12:12:28,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 2095 transitions, 28310 flow [2022-11-20 12:12:28,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-20 12:12:28,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-20 12:12:28,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 5079 transitions. [2022-11-20 12:12:28,354 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4537657464486733 [2022-11-20 12:12:28,354 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 5079 transitions. [2022-11-20 12:12:28,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 5079 transitions. [2022-11-20 12:12:28,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:12:28,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 5079 transitions. [2022-11-20 12:12:28,366 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) [2022-11-20 12:12:28,378 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) [2022-11-20 12:12:28,381 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) [2022-11-20 12:12:28,381 INFO L175 Difference]: Start difference. First operand has 474 places, 1279 transitions, 17520 flow. Second operand 41 states and 5079 transitions. [2022-11-20 12:12:28,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 2095 transitions, 28310 flow [2022-11-20 12:12:29,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 2095 transitions, 28124 flow, removed 59 selfloop flow, removed 5 redundant places. [2022-11-20 12:12:29,347 INFO L231 Difference]: Finished difference. Result has 526 places, 1455 transitions, 23502 flow [2022-11-20 12:12:29,348 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} [2022-11-20 12:12:29,348 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 254 predicate places. [2022-11-20 12:12:29,348 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 1455 transitions, 23502 flow [2022-11-20 12:12:29,349 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) [2022-11-20 12:12:29,349 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:12:29,349 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] [2022-11-20 12:12:29,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 12:12:29,349 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)] === [2022-11-20 12:12:29,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:29,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1067057782, now seen corresponding path program 6 times [2022-11-20 12:12:29,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:12:29,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146624655] [2022-11-20 12:12:29,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:12:29,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:12:29,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat