./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_23-evilcollapse_rc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_23-evilcollapse_rc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash edbdacd2fc511db63719a3e7d2bd257b6310a833f5bcfcddcb6829e714260082 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:52:42,503 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:52:42,505 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:52:42,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:52:42,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:52:42,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:52:42,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:52:42,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:52:42,546 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:52:42,548 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:52:42,549 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:52:42,553 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:52:42,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:52:42,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:52:42,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:52:42,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:52:42,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:52:42,569 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:52:42,571 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:52:42,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:52:42,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:52:42,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:52:42,587 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:52:42,589 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:52:42,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:52:42,600 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:52:42,600 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:52:42,602 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:52:42,603 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:52:42,605 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:52:42,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:52:42,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:52:42,609 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:52:42,610 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:52:42,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:52:42,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:52:42,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:52:42,622 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:52:42,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:52:42,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:52:42,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:52:42,625 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-10-17 10:52:42,661 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:52:42,662 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:52:42,662 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:52:42,662 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:52:42,663 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:52:42,664 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:52:42,664 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:52:42,665 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:52:42,665 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:52:42,665 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:52:42,665 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:52:42,666 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 10:52:42,666 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:52:42,666 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:52:42,666 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:52:42,667 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:52:42,667 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:52:42,667 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:52:42,667 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-10-17 10:52:42,668 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:52:42,668 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:52:42,668 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:52:42,668 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:52:42,669 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:52:42,669 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:52:42,669 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:52:42,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:52:42,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:52:42,670 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:52:42,670 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:52:42,670 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:52:42,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:52:42,671 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:52:42,671 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:52:42,671 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:52:42,672 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_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> edbdacd2fc511db63719a3e7d2bd257b6310a833f5bcfcddcb6829e714260082 [2022-10-17 10:52:42,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:52:42,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:52:42,967 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:52:42,968 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:52:42,969 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:52:42,971 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/goblint-regression/09-regions_23-evilcollapse_rc.i [2022-10-17 10:52:43,045 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/data/116cf8fb3/ca2b112dc2cd4e5cac883b9bc9f5f985/FLAG647fc5b4f [2022-10-17 10:52:43,729 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:52:43,730 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/sv-benchmarks/c/goblint-regression/09-regions_23-evilcollapse_rc.i [2022-10-17 10:52:43,755 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/data/116cf8fb3/ca2b112dc2cd4e5cac883b9bc9f5f985/FLAG647fc5b4f [2022-10-17 10:52:43,939 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/data/116cf8fb3/ca2b112dc2cd4e5cac883b9bc9f5f985 [2022-10-17 10:52:43,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:52:43,943 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:52:43,945 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:52:43,945 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:52:43,949 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:52:43,950 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:52:43" (1/1) ... [2022-10-17 10:52:43,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@447c690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:43, skipping insertion in model container [2022-10-17 10:52:43,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:52:43" (1/1) ... [2022-10-17 10:52:43,960 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:52:44,009 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:52:44,714 WARN L1550 CHandler]: Possible shadowing of function new [2022-10-17 10:52:44,717 WARN L1550 CHandler]: Possible shadowing of function new [2022-10-17 10:52:44,718 WARN L1550 CHandler]: Possible shadowing of function new [2022-10-17 10:52:44,719 WARN L1550 CHandler]: Possible shadowing of function new [2022-10-17 10:52:44,746 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:52:44,762 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:52:44,804 WARN L1550 CHandler]: Possible shadowing of function new [2022-10-17 10:52:44,805 WARN L1550 CHandler]: Possible shadowing of function new [2022-10-17 10:52:44,806 WARN L1550 CHandler]: Possible shadowing of function new [2022-10-17 10:52:44,807 WARN L1550 CHandler]: Possible shadowing of function new [2022-10-17 10:52:44,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:52:44,923 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:52:44,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:44 WrapperNode [2022-10-17 10:52:44,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:52:44,925 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:52:44,926 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:52:44,926 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:52:44,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:44" (1/1) ... [2022-10-17 10:52:44,990 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:44" (1/1) ... [2022-10-17 10:52:45,069 INFO L138 Inliner]: procedures = 272, calls = 38, calls flagged for inlining = 10, calls inlined = 11, statements flattened = 268 [2022-10-17 10:52:45,069 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:52:45,070 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:52:45,070 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:52:45,070 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:52:45,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:44" (1/1) ... [2022-10-17 10:52:45,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:44" (1/1) ... [2022-10-17 10:52:45,091 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:44" (1/1) ... [2022-10-17 10:52:45,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:44" (1/1) ... [2022-10-17 10:52:45,136 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:44" (1/1) ... [2022-10-17 10:52:45,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:44" (1/1) ... [2022-10-17 10:52:45,161 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:44" (1/1) ... [2022-10-17 10:52:45,164 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:44" (1/1) ... [2022-10-17 10:52:45,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:52:45,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:52:45,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:52:45,175 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:52:45,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:44" (1/1) ... [2022-10-17 10:52:45,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:52:45,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:52:45,231 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:52:45,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:52:45,284 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-10-17 10:52:45,285 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-10-17 10:52:45,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:52:45,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 10:52:45,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:52:45,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:52:45,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:52:45,286 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-10-17 10:52:45,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:52:45,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:52:45,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 10:52:45,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:52:45,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:52:45,289 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 10:52:45,475 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:52:45,478 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:52:46,375 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:52:46,388 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:52:46,388 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-17 10:52:46,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:52:46 BoogieIcfgContainer [2022-10-17 10:52:46,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:52:46,394 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:52:46,394 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:52:46,398 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:52:46,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:52:43" (1/3) ... [2022-10-17 10:52:46,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74386e91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:52:46, skipping insertion in model container [2022-10-17 10:52:46,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:44" (2/3) ... [2022-10-17 10:52:46,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74386e91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:52:46, skipping insertion in model container [2022-10-17 10:52:46,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:52:46" (3/3) ... [2022-10-17 10:52:46,401 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_23-evilcollapse_rc.i [2022-10-17 10:52:46,410 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:52:46,422 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:52:46,422 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-10-17 10:52:46,422 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:52:46,586 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 10:52:46,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 377 places, 386 transitions, 782 flow [2022-10-17 10:52:46,903 INFO L130 PetriNetUnfolder]: 16/384 cut-off events. [2022-10-17 10:52:46,903 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:52:46,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 384 events. 16/384 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 683 event pairs, 0 based on Foata normal form. 0/346 useless extension candidates. Maximal degree in co-relation 307. Up to 2 conditions per place. [2022-10-17 10:52:46,914 INFO L82 GeneralOperation]: Start removeDead. Operand has 377 places, 386 transitions, 782 flow [2022-10-17 10:52:46,927 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 375 places, 384 transitions, 774 flow [2022-10-17 10:52:46,949 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:52:46,957 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;@4466cbf5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:52:46,957 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2022-10-17 10:52:46,965 INFO L130 PetriNetUnfolder]: 1/41 cut-off events. [2022-10-17 10:52:46,966 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:52:46,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:52:46,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:52:46,967 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-10-17 10:52:46,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:52:46,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1493687603, now seen corresponding path program 1 times [2022-10-17 10:52:46,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:52:46,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926293461] [2022-10-17 10:52:46,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:46,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:52:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:47,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:52:47,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:52:47,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926293461] [2022-10-17 10:52:47,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926293461] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:52:47,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:52:47,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:52:47,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327669389] [2022-10-17 10:52:47,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:52:47,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:52:47,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:52:48,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:52:48,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:52:48,038 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 386 [2022-10-17 10:52:48,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 384 transitions, 774 flow. Second operand has 6 states, 6 states have (on average 231.5) internal successors, (1389), 6 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:48,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:52:48,048 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 386 [2022-10-17 10:52:48,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:52:49,270 INFO L130 PetriNetUnfolder]: 744/2697 cut-off events. [2022-10-17 10:52:49,271 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-10-17 10:52:49,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4225 conditions, 2697 events. 744/2697 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 16946 event pairs, 600 based on Foata normal form. 249/2569 useless extension candidates. Maximal degree in co-relation 3898. Up to 1463 conditions per place. [2022-10-17 10:52:49,338 INFO L137 encePairwiseOnDemand]: 364/386 looper letters, 134 selfloop transitions, 10 changer transitions 2/372 dead transitions. [2022-10-17 10:52:49,339 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 372 transitions, 1038 flow [2022-10-17 10:52:49,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:52:49,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-10-17 10:52:49,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1536 transitions. [2022-10-17 10:52:49,367 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6632124352331606 [2022-10-17 10:52:49,368 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1536 transitions. [2022-10-17 10:52:49,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1536 transitions. [2022-10-17 10:52:49,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:52:49,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1536 transitions. [2022-10-17 10:52:49,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:49,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:49,407 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:49,410 INFO L175 Difference]: Start difference. First operand has 375 places, 384 transitions, 774 flow. Second operand 6 states and 1536 transitions. [2022-10-17 10:52:49,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 372 transitions, 1038 flow [2022-10-17 10:52:49,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 372 transitions, 1036 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 10:52:49,439 INFO L231 Difference]: Finished difference. Result has 376 places, 370 transitions, 764 flow [2022-10-17 10:52:49,443 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=764, PETRI_PLACES=376, PETRI_TRANSITIONS=370} [2022-10-17 10:52:49,447 INFO L287 CegarLoopForPetriNet]: 375 programPoint places, 1 predicate places. [2022-10-17 10:52:49,448 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 370 transitions, 764 flow [2022-10-17 10:52:49,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 231.5) internal successors, (1389), 6 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:49,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:52:49,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:52:49,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:52:49,451 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-10-17 10:52:49,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:52:49,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1374841415, now seen corresponding path program 1 times [2022-10-17 10:52:49,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:52:49,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060716508] [2022-10-17 10:52:49,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:49,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:52:49,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:49,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:52:49,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:52:49,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060716508] [2022-10-17 10:52:49,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060716508] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:52:49,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:52:49,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:52:49,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125753461] [2022-10-17 10:52:49,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:52:49,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:52:49,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:52:49,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:52:49,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:52:49,996 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 386 [2022-10-17 10:52:49,999 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 370 transitions, 764 flow. Second operand has 6 states, 6 states have (on average 232.5) internal successors, (1395), 6 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:49,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:52:50,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 386 [2022-10-17 10:52:50,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:52:51,160 INFO L130 PetriNetUnfolder]: 744/2693 cut-off events. [2022-10-17 10:52:51,160 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-10-17 10:52:51,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4228 conditions, 2693 events. 744/2693 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 16921 event pairs, 600 based on Foata normal form. 0/2320 useless extension candidates. Maximal degree in co-relation 4032. Up to 1461 conditions per place. [2022-10-17 10:52:51,196 INFO L137 encePairwiseOnDemand]: 374/386 looper letters, 132 selfloop transitions, 10 changer transitions 0/368 dead transitions. [2022-10-17 10:52:51,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 368 transitions, 1044 flow [2022-10-17 10:52:51,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:52:51,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-10-17 10:52:51,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1524 transitions. [2022-10-17 10:52:51,204 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6580310880829016 [2022-10-17 10:52:51,204 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1524 transitions. [2022-10-17 10:52:51,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1524 transitions. [2022-10-17 10:52:51,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:52:51,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1524 transitions. [2022-10-17 10:52:51,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:51,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:51,224 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:51,224 INFO L175 Difference]: Start difference. First operand has 376 places, 370 transitions, 764 flow. Second operand 6 states and 1524 transitions. [2022-10-17 10:52:51,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 368 transitions, 1044 flow [2022-10-17 10:52:51,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 368 transitions, 1024 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-10-17 10:52:51,246 INFO L231 Difference]: Finished difference. Result has 372 places, 368 transitions, 760 flow [2022-10-17 10:52:51,247 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=760, PETRI_PLACES=372, PETRI_TRANSITIONS=368} [2022-10-17 10:52:51,248 INFO L287 CegarLoopForPetriNet]: 375 programPoint places, -3 predicate places. [2022-10-17 10:52:51,249 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 368 transitions, 760 flow [2022-10-17 10:52:51,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 232.5) internal successors, (1395), 6 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:51,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:52:51,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:52:51,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:52:51,252 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-10-17 10:52:51,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:52:51,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1321628424, now seen corresponding path program 1 times [2022-10-17 10:52:51,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:52:51,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869155020] [2022-10-17 10:52:51,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:51,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:52:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:51,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:52:51,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:52:51,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869155020] [2022-10-17 10:52:51,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869155020] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:52:51,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:52:51,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:52:51,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458129980] [2022-10-17 10:52:51,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:52:51,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:52:51,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:52:51,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:52:51,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:52:51,346 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 364 out of 386 [2022-10-17 10:52:51,348 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 368 transitions, 760 flow. Second operand has 3 states, 3 states have (on average 365.0) internal successors, (1095), 3 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:51,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:52:51,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 364 of 386 [2022-10-17 10:52:51,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:52:51,471 INFO L130 PetriNetUnfolder]: 7/492 cut-off events. [2022-10-17 10:52:51,471 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:52:51,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 492 events. 7/492 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1078 event pairs, 0 based on Foata normal form. 0/459 useless extension candidates. Maximal degree in co-relation 293. Up to 13 conditions per place. [2022-10-17 10:52:51,476 INFO L137 encePairwiseOnDemand]: 383/386 looper letters, 17 selfloop transitions, 2 changer transitions 0/375 dead transitions. [2022-10-17 10:52:51,477 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 375 transitions, 812 flow [2022-10-17 10:52:51,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:52:51,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:52:51,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1112 transitions. [2022-10-17 10:52:51,482 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9602763385146805 [2022-10-17 10:52:51,482 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1112 transitions. [2022-10-17 10:52:51,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1112 transitions. [2022-10-17 10:52:51,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:52:51,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1112 transitions. [2022-10-17 10:52:51,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 370.6666666666667) internal successors, (1112), 3 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:51,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 386.0) internal successors, (1544), 4 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:51,493 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 386.0) internal successors, (1544), 4 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:51,494 INFO L175 Difference]: Start difference. First operand has 372 places, 368 transitions, 760 flow. Second operand 3 states and 1112 transitions. [2022-10-17 10:52:51,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 375 transitions, 812 flow [2022-10-17 10:52:51,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 375 transitions, 792 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-10-17 10:52:51,506 INFO L231 Difference]: Finished difference. Result has 370 places, 369 transitions, 752 flow [2022-10-17 10:52:51,507 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=752, PETRI_PLACES=370, PETRI_TRANSITIONS=369} [2022-10-17 10:52:51,510 INFO L287 CegarLoopForPetriNet]: 375 programPoint places, -5 predicate places. [2022-10-17 10:52:51,511 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 369 transitions, 752 flow [2022-10-17 10:52:51,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 365.0) internal successors, (1095), 3 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:51,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:52:51,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:52:51,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:52:51,517 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-10-17 10:52:51,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:52:51,518 INFO L85 PathProgramCache]: Analyzing trace with hash -2125069049, now seen corresponding path program 1 times [2022-10-17 10:52:51,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:52:51,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717961047] [2022-10-17 10:52:51,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:51,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:52:51,562 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:52:51,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1315157929] [2022-10-17 10:52:51,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:51,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:52:51,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:52:51,566 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:52:51,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:52:51,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:51,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 21 conjunts are in the unsatisfiable core [2022-10-17 10:52:51,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:52:51,824 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:52:51,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:52:51,861 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:52:51,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:52:51,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:52:51,945 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 10:52:51,945 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:52:51,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:52:51,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:52:51,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:52:51,996 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 10:52:51,997 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:52:52,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:52:52,027 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:52:52,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:52:52,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717961047] [2022-10-17 10:52:52,032 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:52:52,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315157929] [2022-10-17 10:52:52,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315157929] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:52:52,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:52:52,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:52:52,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888715200] [2022-10-17 10:52:52,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:52:52,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:52:52,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:52:52,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:52:52,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:52:52,042 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 386 [2022-10-17 10:52:52,046 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 369 transitions, 752 flow. Second operand has 8 states, 8 states have (on average 235.625) internal successors, (1885), 8 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:52,046 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:52:52,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 386 [2022-10-17 10:52:52,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:52:54,158 INFO L130 PetriNetUnfolder]: 1489/5407 cut-off events. [2022-10-17 10:52:54,158 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-10-17 10:52:54,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8468 conditions, 5407 events. 1489/5407 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 35503 event pairs, 1200 based on Foata normal form. 0/4667 useless extension candidates. Maximal degree in co-relation 4205. Up to 1504 conditions per place. [2022-10-17 10:52:54,316 INFO L137 encePairwiseOnDemand]: 376/386 looper letters, 214 selfloop transitions, 9 changer transitions 0/453 dead transitions. [2022-10-17 10:52:54,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 453 transitions, 1370 flow [2022-10-17 10:52:54,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:52:54,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:52:54,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2321 transitions. [2022-10-17 10:52:54,326 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6681059297639609 [2022-10-17 10:52:54,327 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2321 transitions. [2022-10-17 10:52:54,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2321 transitions. [2022-10-17 10:52:54,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:52:54,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2321 transitions. [2022-10-17 10:52:54,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 257.8888888888889) internal successors, (2321), 9 states have internal predecessors, (2321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:54,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 386.0) internal successors, (3860), 10 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:54,348 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 386.0) internal successors, (3860), 10 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:54,348 INFO L175 Difference]: Start difference. First operand has 370 places, 369 transitions, 752 flow. Second operand 9 states and 2321 transitions. [2022-10-17 10:52:54,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 453 transitions, 1370 flow [2022-10-17 10:52:54,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 453 transitions, 1368 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-10-17 10:52:54,362 INFO L231 Difference]: Finished difference. Result has 377 places, 369 transitions, 774 flow [2022-10-17 10:52:54,363 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=774, PETRI_PLACES=377, PETRI_TRANSITIONS=369} [2022-10-17 10:52:54,364 INFO L287 CegarLoopForPetriNet]: 375 programPoint places, 2 predicate places. [2022-10-17 10:52:54,364 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 369 transitions, 774 flow [2022-10-17 10:52:54,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 235.625) internal successors, (1885), 8 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:54,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:52:54,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:52:54,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:52:54,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:52:54,581 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-10-17 10:52:54,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:52:54,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1402626691, now seen corresponding path program 1 times [2022-10-17 10:52:54,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:52:54,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327818398] [2022-10-17 10:52:54,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:54,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:52:54,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:54,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:52:54,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:52:54,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327818398] [2022-10-17 10:52:54,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327818398] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:52:54,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:52:54,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:52:54,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748229194] [2022-10-17 10:52:54,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:52:54,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:52:54,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:52:54,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:52:54,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:52:54,668 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 367 out of 386 [2022-10-17 10:52:54,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 369 transitions, 774 flow. Second operand has 3 states, 3 states have (on average 368.0) internal successors, (1104), 3 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:54,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:52:54,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 367 of 386 [2022-10-17 10:52:54,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:52:54,802 INFO L130 PetriNetUnfolder]: 7/680 cut-off events. [2022-10-17 10:52:54,802 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-10-17 10:52:54,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 759 conditions, 680 events. 7/680 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1156 event pairs, 0 based on Foata normal form. 0/640 useless extension candidates. Maximal degree in co-relation 357. Up to 16 conditions per place. [2022-10-17 10:52:54,807 INFO L137 encePairwiseOnDemand]: 383/386 looper letters, 11 selfloop transitions, 2 changer transitions 0/373 dead transitions. [2022-10-17 10:52:54,807 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 373 transitions, 808 flow [2022-10-17 10:52:54,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:52:54,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:52:54,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1115 transitions. [2022-10-17 10:52:54,812 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9628670120898101 [2022-10-17 10:52:54,812 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1115 transitions. [2022-10-17 10:52:54,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1115 transitions. [2022-10-17 10:52:54,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:52:54,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1115 transitions. [2022-10-17 10:52:54,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 371.6666666666667) internal successors, (1115), 3 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:54,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 386.0) internal successors, (1544), 4 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:54,821 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 386.0) internal successors, (1544), 4 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:54,821 INFO L175 Difference]: Start difference. First operand has 377 places, 369 transitions, 774 flow. Second operand 3 states and 1115 transitions. [2022-10-17 10:52:54,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 373 transitions, 808 flow [2022-10-17 10:52:54,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 373 transitions, 794 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-10-17 10:52:54,832 INFO L231 Difference]: Finished difference. Result has 373 places, 370 transitions, 772 flow [2022-10-17 10:52:54,833 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=772, PETRI_PLACES=373, PETRI_TRANSITIONS=370} [2022-10-17 10:52:54,834 INFO L287 CegarLoopForPetriNet]: 375 programPoint places, -2 predicate places. [2022-10-17 10:52:54,835 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 370 transitions, 772 flow [2022-10-17 10:52:54,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 368.0) internal successors, (1104), 3 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:54,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:52:54,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:52:54,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:52:54,836 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-10-17 10:52:54,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:52:54,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1785682785, now seen corresponding path program 1 times [2022-10-17 10:52:54,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:52:54,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392414959] [2022-10-17 10:52:54,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:54,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:52:54,867 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:52:54,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1681868983] [2022-10-17 10:52:54,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:54,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:52:54,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:52:54,869 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:52:54,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 10:52:55,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:55,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-17 10:52:55,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:52:55,050 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:52:55,061 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2022-10-17 10:52:55,091 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 10:52:55,092 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 30 treesize of output 32 [2022-10-17 10:52:55,126 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 10:52:55,126 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 39 treesize of output 44 [2022-10-17 10:52:55,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:52:55,153 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:52:55,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:52:55,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392414959] [2022-10-17 10:52:55,153 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:52:55,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681868983] [2022-10-17 10:52:55,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681868983] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:52:55,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:52:55,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:52:55,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434583614] [2022-10-17 10:52:55,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:52:55,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:52:55,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:52:55,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:52:55,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:52:55,159 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 386 [2022-10-17 10:52:55,161 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 370 transitions, 772 flow. Second operand has 6 states, 6 states have (on average 242.5) internal successors, (1455), 6 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:55,161 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:52:55,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 386 [2022-10-17 10:52:55,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:52:56,440 INFO L130 PetriNetUnfolder]: 745/3001 cut-off events. [2022-10-17 10:52:56,441 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-10-17 10:52:56,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4707 conditions, 3001 events. 745/3001 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 18195 event pairs, 600 based on Foata normal form. 0/2620 useless extension candidates. Maximal degree in co-relation 4194. Up to 1599 conditions per place. [2022-10-17 10:52:56,471 INFO L137 encePairwiseOnDemand]: 380/386 looper letters, 128 selfloop transitions, 5 changer transitions 0/369 dead transitions. [2022-10-17 10:52:56,471 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 369 transitions, 1036 flow [2022-10-17 10:52:56,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:52:56,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-10-17 10:52:56,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1556 transitions. [2022-10-17 10:52:56,478 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6718480138169257 [2022-10-17 10:52:56,478 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1556 transitions. [2022-10-17 10:52:56,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1556 transitions. [2022-10-17 10:52:56,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:52:56,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1556 transitions. [2022-10-17 10:52:56,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 259.3333333333333) internal successors, (1556), 6 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:56,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:56,493 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:56,494 INFO L175 Difference]: Start difference. First operand has 373 places, 370 transitions, 772 flow. Second operand 6 states and 1556 transitions. [2022-10-17 10:52:56,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 369 transitions, 1036 flow [2022-10-17 10:52:56,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 369 transitions, 1034 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-10-17 10:52:56,506 INFO L231 Difference]: Finished difference. Result has 376 places, 369 transitions, 778 flow [2022-10-17 10:52:56,507 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=778, PETRI_PLACES=376, PETRI_TRANSITIONS=369} [2022-10-17 10:52:56,514 INFO L287 CegarLoopForPetriNet]: 375 programPoint places, 1 predicate places. [2022-10-17 10:52:56,515 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 369 transitions, 778 flow [2022-10-17 10:52:56,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 242.5) internal successors, (1455), 6 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:56,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:52:56,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:52:56,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:52:56,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-10-17 10:52:56,741 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-10-17 10:52:56,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:52:56,742 INFO L85 PathProgramCache]: Analyzing trace with hash -255996463, now seen corresponding path program 1 times [2022-10-17 10:52:56,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:52:56,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726543964] [2022-10-17 10:52:56,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:56,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:52:56,856 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:52:56,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [91973197] [2022-10-17 10:52:56,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:56,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:52:56,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:52:56,861 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:52:56,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 10:52:57,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:57,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-17 10:52:57,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:52:57,078 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:52:57,091 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:52:57,126 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 10:52:57,126 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:52:57,167 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 10:52:57,168 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:52:57,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:52:57,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:52:57,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:52:57,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726543964] [2022-10-17 10:52:57,195 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:52:57,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91973197] [2022-10-17 10:52:57,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91973197] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:52:57,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:52:57,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:52:57,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003869041] [2022-10-17 10:52:57,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:52:57,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:52:57,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:52:57,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:52:57,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:52:57,201 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 386 [2022-10-17 10:52:57,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 369 transitions, 778 flow. Second operand has 6 states, 6 states have (on average 242.5) internal successors, (1455), 6 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:57,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:52:57,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 386 [2022-10-17 10:52:57,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:52:58,330 INFO L130 PetriNetUnfolder]: 745/2997 cut-off events. [2022-10-17 10:52:58,331 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-10-17 10:52:58,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4721 conditions, 2997 events. 745/2997 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 18148 event pairs, 600 based on Foata normal form. 0/2620 useless extension candidates. Maximal degree in co-relation 4243. Up to 1599 conditions per place. [2022-10-17 10:52:58,366 INFO L137 encePairwiseOnDemand]: 380/386 looper letters, 128 selfloop transitions, 5 changer transitions 0/368 dead transitions. [2022-10-17 10:52:58,366 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 368 transitions, 1042 flow [2022-10-17 10:52:58,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:52:58,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-10-17 10:52:58,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1550 transitions. [2022-10-17 10:52:58,378 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6692573402417962 [2022-10-17 10:52:58,378 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1550 transitions. [2022-10-17 10:52:58,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1550 transitions. [2022-10-17 10:52:58,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:52:58,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1550 transitions. [2022-10-17 10:52:58,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 258.3333333333333) internal successors, (1550), 6 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:58,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:58,393 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:58,393 INFO L175 Difference]: Start difference. First operand has 376 places, 369 transitions, 778 flow. Second operand 6 states and 1550 transitions. [2022-10-17 10:52:58,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 368 transitions, 1042 flow [2022-10-17 10:52:58,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 368 transitions, 1032 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-10-17 10:52:58,405 INFO L231 Difference]: Finished difference. Result has 375 places, 368 transitions, 776 flow [2022-10-17 10:52:58,406 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=776, PETRI_PLACES=375, PETRI_TRANSITIONS=368} [2022-10-17 10:52:58,407 INFO L287 CegarLoopForPetriNet]: 375 programPoint places, 0 predicate places. [2022-10-17 10:52:58,407 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 368 transitions, 776 flow [2022-10-17 10:52:58,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 242.5) internal successors, (1455), 6 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:58,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:52:58,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:52:58,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:52:58,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-10-17 10:52:58,637 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-10-17 10:52:58,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:52:58,638 INFO L85 PathProgramCache]: Analyzing trace with hash 439730996, now seen corresponding path program 1 times [2022-10-17 10:52:58,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:52:58,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314699844] [2022-10-17 10:52:58,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:58,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:52:58,673 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:52:58,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2120006775] [2022-10-17 10:52:58,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:58,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:52:58,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:52:58,675 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:52:58,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 10:52:58,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:58,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-17 10:52:58,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:52:58,932 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:52:58,944 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2022-10-17 10:52:58,983 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 10:52:58,984 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 30 treesize of output 32 [2022-10-17 10:52:59,013 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 10:52:59,013 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 39 treesize of output 44 [2022-10-17 10:52:59,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:52:59,036 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:52:59,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:52:59,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314699844] [2022-10-17 10:52:59,036 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:52:59,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120006775] [2022-10-17 10:52:59,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120006775] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:52:59,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:52:59,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:52:59,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672443357] [2022-10-17 10:52:59,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:52:59,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:52:59,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:52:59,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:52:59,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:52:59,042 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 386 [2022-10-17 10:52:59,044 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 368 transitions, 776 flow. Second operand has 6 states, 6 states have (on average 241.5) internal successors, (1449), 6 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:59,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:52:59,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 386 [2022-10-17 10:52:59,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:53:00,198 INFO L130 PetriNetUnfolder]: 745/2993 cut-off events. [2022-10-17 10:53:00,198 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-10-17 10:53:00,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4721 conditions, 2993 events. 745/2993 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 18108 event pairs, 600 based on Foata normal form. 0/2620 useless extension candidates. Maximal degree in co-relation 4267. Up to 1603 conditions per place. [2022-10-17 10:53:00,224 INFO L137 encePairwiseOnDemand]: 380/386 looper letters, 129 selfloop transitions, 5 changer transitions 0/367 dead transitions. [2022-10-17 10:53:00,224 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 367 transitions, 1042 flow [2022-10-17 10:53:00,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:53:00,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-10-17 10:53:00,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1539 transitions. [2022-10-17 10:53:00,231 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6645077720207254 [2022-10-17 10:53:00,232 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1539 transitions. [2022-10-17 10:53:00,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1539 transitions. [2022-10-17 10:53:00,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:53:00,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1539 transitions. [2022-10-17 10:53:00,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 256.5) internal successors, (1539), 6 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:53:00,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:53:00,247 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:53:00,247 INFO L175 Difference]: Start difference. First operand has 375 places, 368 transitions, 776 flow. Second operand 6 states and 1539 transitions. [2022-10-17 10:53:00,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 367 transitions, 1042 flow [2022-10-17 10:53:00,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 367 transitions, 1032 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-10-17 10:53:00,257 INFO L231 Difference]: Finished difference. Result has 374 places, 367 transitions, 774 flow [2022-10-17 10:53:00,258 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=774, PETRI_PLACES=374, PETRI_TRANSITIONS=367} [2022-10-17 10:53:00,259 INFO L287 CegarLoopForPetriNet]: 375 programPoint places, -1 predicate places. [2022-10-17 10:53:00,259 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 367 transitions, 774 flow [2022-10-17 10:53:00,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 241.5) internal successors, (1449), 6 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:53:00,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:53:00,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:53:00,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:53:00,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-10-17 10:53:00,482 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-10-17 10:53:00,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:53:00,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1029613211, now seen corresponding path program 1 times [2022-10-17 10:53:00,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:53:00,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407019109] [2022-10-17 10:53:00,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:00,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:53:00,515 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:53:00,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1594135624] [2022-10-17 10:53:00,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:00,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:53:00,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:53:00,517 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:53:00,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-17 10:53:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:00,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-17 10:53:00,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:53:00,790 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:53:00,799 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:53:00,818 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 10:53:00,819 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:53:00,844 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 10:53:00,844 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:53:00,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:53:00,873 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:53:00,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:53:00,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407019109] [2022-10-17 10:53:00,874 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:53:00,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594135624] [2022-10-17 10:53:00,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594135624] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:53:00,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:53:00,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:53:00,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882569977] [2022-10-17 10:53:00,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:53:00,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:53:00,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:53:00,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:53:00,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:53:00,879 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 386 [2022-10-17 10:53:00,881 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 367 transitions, 774 flow. Second operand has 6 states, 6 states have (on average 242.5) internal successors, (1455), 6 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:53:00,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:53:00,881 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 386 [2022-10-17 10:53:00,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:53:01,909 INFO L130 PetriNetUnfolder]: 745/2989 cut-off events. [2022-10-17 10:53:01,909 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-10-17 10:53:01,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4713 conditions, 2989 events. 745/2989 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 18107 event pairs, 600 based on Foata normal form. 0/2620 useless extension candidates. Maximal degree in co-relation 4279. Up to 1599 conditions per place. [2022-10-17 10:53:01,937 INFO L137 encePairwiseOnDemand]: 380/386 looper letters, 128 selfloop transitions, 5 changer transitions 0/366 dead transitions. [2022-10-17 10:53:01,938 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 366 transitions, 1038 flow [2022-10-17 10:53:01,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:53:01,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-10-17 10:53:01,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1538 transitions. [2022-10-17 10:53:01,945 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6640759930915371 [2022-10-17 10:53:01,945 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1538 transitions. [2022-10-17 10:53:01,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1538 transitions. [2022-10-17 10:53:01,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:53:01,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1538 transitions. [2022-10-17 10:53:01,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 256.3333333333333) internal successors, (1538), 6 states have internal predecessors, (1538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:53:01,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:53:01,960 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:53:01,961 INFO L175 Difference]: Start difference. First operand has 374 places, 367 transitions, 774 flow. Second operand 6 states and 1538 transitions. [2022-10-17 10:53:01,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 366 transitions, 1038 flow [2022-10-17 10:53:01,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 366 transitions, 1028 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-10-17 10:53:01,973 INFO L231 Difference]: Finished difference. Result has 373 places, 366 transitions, 772 flow [2022-10-17 10:53:01,974 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=772, PETRI_PLACES=373, PETRI_TRANSITIONS=366} [2022-10-17 10:53:01,975 INFO L287 CegarLoopForPetriNet]: 375 programPoint places, -2 predicate places. [2022-10-17 10:53:01,975 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 366 transitions, 772 flow [2022-10-17 10:53:01,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 242.5) internal successors, (1455), 6 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:53:01,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:53:01,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:53:02,014 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-10-17 10:53:02,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:53:02,189 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-10-17 10:53:02,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:53:02,190 INFO L85 PathProgramCache]: Analyzing trace with hash 2141761406, now seen corresponding path program 1 times [2022-10-17 10:53:02,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:53:02,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152410682] [2022-10-17 10:53:02,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:02,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:53:02,230 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:53:02,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2062494829] [2022-10-17 10:53:02,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:02,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:53:02,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:53:02,232 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:53:02,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-17 10:53:02,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:02,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-17 10:53:02,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:53:02,517 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:53:02,528 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2022-10-17 10:53:02,550 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 10:53:02,550 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 30 treesize of output 32 [2022-10-17 10:53:02,577 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 10:53:02,578 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 39 treesize of output 44 [2022-10-17 10:53:02,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:53:02,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:53:02,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:53:02,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152410682] [2022-10-17 10:53:02,604 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:53:02,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062494829] [2022-10-17 10:53:02,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062494829] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:53:02,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:53:02,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:53:02,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793261140] [2022-10-17 10:53:02,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:53:02,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:53:02,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:53:02,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:53:02,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:53:02,610 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 386 [2022-10-17 10:53:02,612 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 366 transitions, 772 flow. Second operand has 6 states, 6 states have (on average 244.33333333333334) internal successors, (1466), 6 states have internal predecessors, (1466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:53:02,612 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:53:02,612 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 386 [2022-10-17 10:53:02,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:53:03,571 INFO L130 PetriNetUnfolder]: 745/2985 cut-off events. [2022-10-17 10:53:03,571 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-10-17 10:53:03,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4701 conditions, 2985 events. 745/2985 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 18043 event pairs, 600 based on Foata normal form. 0/2620 useless extension candidates. Maximal degree in co-relation 4289. Up to 1591 conditions per place. [2022-10-17 10:53:03,598 INFO L137 encePairwiseOnDemand]: 380/386 looper letters, 126 selfloop transitions, 5 changer transitions 0/365 dead transitions. [2022-10-17 10:53:03,598 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 365 transitions, 1032 flow [2022-10-17 10:53:03,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:53:03,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-10-17 10:53:03,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1542 transitions. [2022-10-17 10:53:03,606 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6658031088082902 [2022-10-17 10:53:03,606 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1542 transitions. [2022-10-17 10:53:03,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1542 transitions. [2022-10-17 10:53:03,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:53:03,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1542 transitions. [2022-10-17 10:53:03,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 257.0) internal successors, (1542), 6 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:53:03,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:53:03,621 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:53:03,621 INFO L175 Difference]: Start difference. First operand has 373 places, 366 transitions, 772 flow. Second operand 6 states and 1542 transitions. [2022-10-17 10:53:03,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 365 transitions, 1032 flow [2022-10-17 10:53:03,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 365 transitions, 1022 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-10-17 10:53:03,633 INFO L231 Difference]: Finished difference. Result has 372 places, 365 transitions, 770 flow [2022-10-17 10:53:03,634 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=770, PETRI_PLACES=372, PETRI_TRANSITIONS=365} [2022-10-17 10:53:03,635 INFO L287 CegarLoopForPetriNet]: 375 programPoint places, -3 predicate places. [2022-10-17 10:53:03,635 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 365 transitions, 770 flow [2022-10-17 10:53:03,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 244.33333333333334) internal successors, (1466), 6 states have internal predecessors, (1466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:53:03,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:53:03,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:53:03,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-17 10:53:03,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-10-17 10:53:03,849 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-10-17 10:53:03,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:53:03,850 INFO L85 PathProgramCache]: Analyzing trace with hash 839344870, now seen corresponding path program 1 times [2022-10-17 10:53:03,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:53:03,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273633300] [2022-10-17 10:53:03,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:03,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:53:03,897 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:53:03,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [953405040] [2022-10-17 10:53:03,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:03,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:53:03,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:53:03,899 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:53:03,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-17 10:53:04,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:04,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:53:04,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:53:04,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:53:04,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:53:04,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:53:04,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:53:04,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273633300] [2022-10-17 10:53:04,503 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:53:04,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953405040] [2022-10-17 10:53:04,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953405040] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:53:04,504 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:53:04,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-10-17 10:53:04,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456692356] [2022-10-17 10:53:04,505 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:53:04,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:53:04,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:53:04,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:53:04,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:53:04,512 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 366 out of 386 [2022-10-17 10:53:04,516 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 365 transitions, 770 flow. Second operand has 8 states, 8 states have (on average 367.875) internal successors, (2943), 8 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:53:04,516 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:53:04,516 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 366 of 386 [2022-10-17 10:53:04,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:53:04,789 INFO L130 PetriNetUnfolder]: 7/846 cut-off events. [2022-10-17 10:53:04,789 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-10-17 10:53:04,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 963 conditions, 846 events. 7/846 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 686 event pairs, 0 based on Foata normal form. 4/832 useless extension candidates. Maximal degree in co-relation 363. Up to 13 conditions per place. [2022-10-17 10:53:04,794 INFO L137 encePairwiseOnDemand]: 380/386 looper letters, 12 selfloop transitions, 9 changer transitions 0/375 dead transitions. [2022-10-17 10:53:04,795 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 375 transitions, 834 flow [2022-10-17 10:53:04,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:53:04,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:53:04,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3317 transitions. [2022-10-17 10:53:04,807 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9548071387449626 [2022-10-17 10:53:04,808 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3317 transitions. [2022-10-17 10:53:04,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3317 transitions. [2022-10-17 10:53:04,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:53:04,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3317 transitions. [2022-10-17 10:53:04,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 368.55555555555554) internal successors, (3317), 9 states have internal predecessors, (3317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:53:04,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 386.0) internal successors, (3860), 10 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:53:04,834 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 386.0) internal successors, (3860), 10 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:53:04,834 INFO L175 Difference]: Start difference. First operand has 372 places, 365 transitions, 770 flow. Second operand 9 states and 3317 transitions. [2022-10-17 10:53:04,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 375 transitions, 834 flow [2022-10-17 10:53:04,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 375 transitions, 824 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-10-17 10:53:04,847 INFO L231 Difference]: Finished difference. Result has 378 places, 371 transitions, 810 flow [2022-10-17 10:53:04,848 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=810, PETRI_PLACES=378, PETRI_TRANSITIONS=371} [2022-10-17 10:53:04,848 INFO L287 CegarLoopForPetriNet]: 375 programPoint places, 3 predicate places. [2022-10-17 10:53:04,848 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 371 transitions, 810 flow [2022-10-17 10:53:04,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 367.875) internal successors, (2943), 8 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:53:04,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:53:04,851 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:53:04,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-17 10:53:05,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-10-17 10:53:05,070 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-10-17 10:53:05,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:53:05,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1951053958, now seen corresponding path program 2 times [2022-10-17 10:53:05,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:53:05,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677930315] [2022-10-17 10:53:05,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:05,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:53:05,162 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:53:05,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [618641925] [2022-10-17 10:53:05,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:53:05,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:53:05,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:53:05,164 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:53:05,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-17 10:53:05,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-17 10:53:05,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:53:05,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-17 10:53:05,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:53:05,494 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 11 [2022-10-17 10:53:05,506 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 28 treesize of output 27 [2022-10-17 10:53:05,533 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 10:53:05,534 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 40 treesize of output 42 [2022-10-17 10:53:05,569 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 10:53:05,570 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 52 treesize of output 57 [2022-10-17 10:53:05,599 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2022-10-17 10:53:05,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:53:05,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:53:05,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677930315] [2022-10-17 10:53:05,600 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:53:05,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618641925] [2022-10-17 10:53:05,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618641925] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:53:05,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:53:05,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:53:05,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403143458] [2022-10-17 10:53:05,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:53:05,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:53:05,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:53:05,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:53:05,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:53:05,606 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 386 [2022-10-17 10:53:05,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 371 transitions, 810 flow. Second operand has 6 states, 6 states have (on average 228.83333333333334) internal successors, (1373), 6 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:53:05,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:53:05,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 386 [2022-10-17 10:53:05,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:53:07,162 INFO L130 PetriNetUnfolder]: 1039/3441 cut-off events. [2022-10-17 10:53:07,162 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-10-17 10:53:07,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5837 conditions, 3441 events. 1039/3441 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 19244 event pairs, 870 based on Foata normal form. 0/3017 useless extension candidates. Maximal degree in co-relation 5183. Up to 2233 conditions per place. [2022-10-17 10:53:07,210 INFO L137 encePairwiseOnDemand]: 374/386 looper letters, 136 selfloop transitions, 10 changer transitions 0/369 dead transitions. [2022-10-17 10:53:07,210 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 369 transitions, 1098 flow [2022-10-17 10:53:07,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:53:07,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-10-17 10:53:07,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1456 transitions. [2022-10-17 10:53:07,218 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6286701208981001 [2022-10-17 10:53:07,218 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1456 transitions. [2022-10-17 10:53:07,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1456 transitions. [2022-10-17 10:53:07,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:53:07,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1456 transitions. [2022-10-17 10:53:07,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 242.66666666666666) internal successors, (1456), 6 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:53:07,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:53:07,233 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:53:07,233 INFO L175 Difference]: Start difference. First operand has 378 places, 371 transitions, 810 flow. Second operand 6 states and 1456 transitions. [2022-10-17 10:53:07,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 369 transitions, 1098 flow [2022-10-17 10:53:07,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 369 transitions, 1092 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-10-17 10:53:07,248 INFO L231 Difference]: Finished difference. Result has 380 places, 369 transitions, 820 flow [2022-10-17 10:53:07,248 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=820, PETRI_PLACES=380, PETRI_TRANSITIONS=369} [2022-10-17 10:53:07,251 INFO L287 CegarLoopForPetriNet]: 375 programPoint places, 5 predicate places. [2022-10-17 10:53:07,251 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 369 transitions, 820 flow [2022-10-17 10:53:07,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 228.83333333333334) internal successors, (1373), 6 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:53:07,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:53:07,253 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:53:07,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-17 10:53:07,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-10-17 10:53:07,477 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-10-17 10:53:07,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:53:07,478 INFO L85 PathProgramCache]: Analyzing trace with hash -245474544, now seen corresponding path program 1 times [2022-10-17 10:53:07,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:53:07,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255720221] [2022-10-17 10:53:07,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:07,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:53:07,565 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:53:07,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [753723573] [2022-10-17 10:53:07,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:07,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:53:07,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:53:07,567 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:53:07,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-17 10:53:08,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:08,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 1421 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 10:53:08,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:53:08,498 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:53:08,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:53:09,037 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:53:09,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:53:09,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255720221] [2022-10-17 10:53:09,038 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:53:09,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753723573] [2022-10-17 10:53:09,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753723573] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:53:09,038 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:53:09,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-10-17 10:53:09,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695797954] [2022-10-17 10:53:09,039 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:53:09,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-17 10:53:09,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:53:09,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-17 10:53:09,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:53:09,053 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 366 out of 386 [2022-10-17 10:53:09,059 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 369 transitions, 820 flow. Second operand has 16 states, 16 states have (on average 368.1875) internal successors, (5891), 16 states have internal predecessors, (5891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:53:09,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:53:09,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 366 of 386 [2022-10-17 10:53:09,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:53:09,761 INFO L130 PetriNetUnfolder]: 7/1572 cut-off events. [2022-10-17 10:53:09,762 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-10-17 10:53:09,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1826 conditions, 1572 events. 7/1572 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 686 event pairs, 0 based on Foata normal form. 8/1564 useless extension candidates. Maximal degree in co-relation 1594. Up to 29 conditions per place. [2022-10-17 10:53:09,769 INFO L137 encePairwiseOnDemand]: 380/386 looper letters, 20 selfloop transitions, 21 changer transitions 0/393 dead transitions. [2022-10-17 10:53:09,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 393 transitions, 1002 flow [2022-10-17 10:53:09,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-10-17 10:53:09,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-10-17 10:53:09,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 7731 transitions. [2022-10-17 10:53:09,792 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9537379718726869 [2022-10-17 10:53:09,792 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 7731 transitions. [2022-10-17 10:53:09,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 7731 transitions. [2022-10-17 10:53:09,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:53:09,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 7731 transitions. [2022-10-17 10:53:09,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 368.14285714285717) internal successors, (7731), 21 states have internal predecessors, (7731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:53:09,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 386.0) internal successors, (8492), 22 states have internal predecessors, (8492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:53:09,836 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 386.0) internal successors, (8492), 22 states have internal predecessors, (8492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:53:09,837 INFO L175 Difference]: Start difference. First operand has 380 places, 369 transitions, 820 flow. Second operand 21 states and 7731 transitions. [2022-10-17 10:53:09,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 393 transitions, 1002 flow [2022-10-17 10:53:09,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 393 transitions, 982 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-10-17 10:53:09,849 INFO L231 Difference]: Finished difference. Result has 400 places, 382 transitions, 930 flow [2022-10-17 10:53:09,850 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=930, PETRI_PLACES=400, PETRI_TRANSITIONS=382} [2022-10-17 10:53:09,851 INFO L287 CegarLoopForPetriNet]: 375 programPoint places, 25 predicate places. [2022-10-17 10:53:09,851 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 382 transitions, 930 flow [2022-10-17 10:53:09,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 368.1875) internal successors, (5891), 16 states have internal predecessors, (5891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:53:09,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:53:09,854 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:53:09,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-17 10:53:10,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-17 10:53:10,069 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-10-17 10:53:10,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:53:10,070 INFO L85 PathProgramCache]: Analyzing trace with hash -238698544, now seen corresponding path program 2 times [2022-10-17 10:53:10,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:53:10,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146121862] [2022-10-17 10:53:10,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:10,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:53:10,265 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:53:10,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1225152040] [2022-10-17 10:53:10,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:53:10,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:53:10,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:53:10,267 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:53:10,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-17 10:53:10,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-17 10:53:10,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:53:10,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-17 10:53:10,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:53:10,860 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:53:10,871 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2022-10-17 10:53:10,888 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 10:53:10,889 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 30 treesize of output 32 [2022-10-17 10:53:10,923 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 10:53:10,924 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 39 treesize of output 44 [2022-10-17 10:53:10,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1919 trivial. 0 not checked. [2022-10-17 10:53:10,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:53:10,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:53:10,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146121862] [2022-10-17 10:53:10,955 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:53:10,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225152040] [2022-10-17 10:53:10,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225152040] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:53:10,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:53:10,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:53:10,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907436865] [2022-10-17 10:53:10,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:53:10,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:53:10,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:53:10,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:53:10,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:53:10,964 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 386 [2022-10-17 10:53:10,966 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 382 transitions, 930 flow. Second operand has 6 states, 6 states have (on average 249.5) internal successors, (1497), 6 states have internal predecessors, (1497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:53:10,966 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:53:10,966 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 386 [2022-10-17 10:53:10,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:53:13,040 INFO L130 PetriNetUnfolder]: 745/3896 cut-off events. [2022-10-17 10:53:13,040 INFO L131 PetriNetUnfolder]: For 88/88 co-relation queries the response was YES. [2022-10-17 10:53:13,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6170 conditions, 3896 events. 745/3896 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 17711 event pairs, 600 based on Foata normal form. 0/3534 useless extension candidates. Maximal degree in co-relation 4908. Up to 1979 conditions per place. [2022-10-17 10:53:13,071 INFO L137 encePairwiseOnDemand]: 380/386 looper letters, 120 selfloop transitions, 5 changer transitions 0/381 dead transitions. [2022-10-17 10:53:13,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 381 transitions, 1178 flow [2022-10-17 10:53:13,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:53:13,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-10-17 10:53:13,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1554 transitions. [2022-10-17 10:53:13,078 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6709844559585493 [2022-10-17 10:53:13,078 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1554 transitions. [2022-10-17 10:53:13,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1554 transitions. [2022-10-17 10:53:13,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:53:13,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1554 transitions. [2022-10-17 10:53:13,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:53:13,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:53:13,090 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:53:13,091 INFO L175 Difference]: Start difference. First operand has 400 places, 382 transitions, 930 flow. Second operand 6 states and 1554 transitions. [2022-10-17 10:53:13,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 381 transitions, 1178 flow [2022-10-17 10:53:13,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 381 transitions, 1154 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-10-17 10:53:13,104 INFO L231 Difference]: Finished difference. Result has 398 places, 381 transitions, 914 flow [2022-10-17 10:53:13,105 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=914, PETRI_PLACES=398, PETRI_TRANSITIONS=381} [2022-10-17 10:53:13,105 INFO L287 CegarLoopForPetriNet]: 375 programPoint places, 23 predicate places. [2022-10-17 10:53:13,106 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 381 transitions, 914 flow [2022-10-17 10:53:13,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 249.5) internal successors, (1497), 6 states have internal predecessors, (1497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:53:13,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:53:13,107 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:53:13,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-17 10:53:13,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be86fba-2fc1-4000-a8c9-3c9135b07740/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-10-17 10:53:13,321 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-10-17 10:53:13,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:53:13,322 INFO L85 PathProgramCache]: Analyzing trace with hash -890013826, now seen corresponding path program 1 times [2022-10-17 10:53:13,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:53:13,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034551539] [2022-10-17 10:53:13,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:13,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms