./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-deagle/floating_read-10.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-deagle/floating_read-10.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8144e99ab74da6c65d7c38142aa4ddc1b99b688ea06937a7acd153b5a75ad731 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:13:02,400 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:13:02,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:13:02,462 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:13:02,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:13:02,470 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:13:02,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:13:02,478 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:13:02,482 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:13:02,490 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:13:02,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:13:02,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:13:02,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:13:02,501 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:13:02,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:13:02,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:13:02,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:13:02,512 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:13:02,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:13:02,525 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:13:02,527 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:13:02,529 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:13:02,533 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:13:02,535 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:13:02,547 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:13:02,548 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:13:02,548 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:13:02,551 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:13:02,552 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:13:02,554 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:13:02,554 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:13:02,556 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:13:02,559 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:13:02,562 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:13:02,567 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:13:02,567 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:13:02,568 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:13:02,569 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:13:02,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:13:02,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:13:02,573 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:13:02,574 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-18 20:13:02,624 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:13:02,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:13:02,625 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:13:02,625 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:13:02,626 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:13:02,626 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:13:02,628 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:13:02,628 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:13:02,628 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:13:02,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:13:02,629 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:13:02,629 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:13:02,629 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:13:02,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:13:02,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:13:02,630 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:13:02,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:13:02,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:13:02,631 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-18 20:13:02,631 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:13:02,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:13:02,632 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:13:02,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:13:02,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:13:02,633 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:13:02,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:13:02,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:13:02,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:13:02,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:13:02,634 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:13:02,635 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:13:02,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:13:02,635 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:13:02,635 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:13:02,636 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:13:02,636 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_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8144e99ab74da6c65d7c38142aa4ddc1b99b688ea06937a7acd153b5a75ad731 [2022-11-18 20:13:03,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:13:03,093 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:13:03,107 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:13:03,109 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:13:03,110 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:13:03,112 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread-deagle/floating_read-10.i [2022-11-18 20:13:03,238 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/data/2de70dddf/0ae844bf9e224ea198e16d1cb8467889/FLAG050912502 [2022-11-18 20:13:03,951 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:13:03,952 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/sv-benchmarks/c/pthread-deagle/floating_read-10.i [2022-11-18 20:13:03,973 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/data/2de70dddf/0ae844bf9e224ea198e16d1cb8467889/FLAG050912502 [2022-11-18 20:13:04,230 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/data/2de70dddf/0ae844bf9e224ea198e16d1cb8467889 [2022-11-18 20:13:04,236 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:13:04,240 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:13:04,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:13:04,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:13:04,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:13:04,255 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:13:04" (1/1) ... [2022-11-18 20:13:04,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@613dffab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:13:04, skipping insertion in model container [2022-11-18 20:13:04,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:13:04" (1/1) ... [2022-11-18 20:13:04,267 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:13:04,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:13:04,868 WARN L1568 CHandler]: Possible shadowing of function thread [2022-11-18 20:13:04,896 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/sv-benchmarks/c/pthread-deagle/floating_read-10.i[31197,31210] [2022-11-18 20:13:04,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:13:04,919 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:13:05,006 WARN L1568 CHandler]: Possible shadowing of function thread [2022-11-18 20:13:05,018 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/sv-benchmarks/c/pthread-deagle/floating_read-10.i[31197,31210] [2022-11-18 20:13:05,023 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:13:05,075 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:13:05,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:13:05 WrapperNode [2022-11-18 20:13:05,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:13:05,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:13:05,078 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:13:05,078 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:13:05,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:13:05" (1/1) ... [2022-11-18 20:13:05,124 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:13:05" (1/1) ... [2022-11-18 20:13:05,173 INFO L138 Inliner]: procedures = 162, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63 [2022-11-18 20:13:05,174 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:13:05,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:13:05,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:13:05,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:13:05,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:13:05" (1/1) ... [2022-11-18 20:13:05,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:13:05" (1/1) ... [2022-11-18 20:13:05,194 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:13:05" (1/1) ... [2022-11-18 20:13:05,194 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:13:05" (1/1) ... [2022-11-18 20:13:05,202 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:13:05" (1/1) ... [2022-11-18 20:13:05,206 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:13:05" (1/1) ... [2022-11-18 20:13:05,210 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:13:05" (1/1) ... [2022-11-18 20:13:05,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:13:05" (1/1) ... [2022-11-18 20:13:05,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:13:05,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:13:05,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:13:05,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:13:05,230 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:13:05" (1/1) ... [2022-11-18 20:13:05,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:13:05,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:13:05,271 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:13:05,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:13:05,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:13:05,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:13:05,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 20:13:05,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:13:05,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:13:05,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:13:05,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:13:05,339 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2022-11-18 20:13:05,339 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2022-11-18 20:13:05,339 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 20:13:05,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:13:05,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:13:05,342 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:13:05,519 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:13:05,522 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:13:05,764 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:13:05,825 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:13:05,826 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 20:13:05,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:13:05 BoogieIcfgContainer [2022-11-18 20:13:05,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:13:05,846 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:13:05,846 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:13:05,852 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:13:05,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:13:04" (1/3) ... [2022-11-18 20:13:05,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b33de36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:13:05, skipping insertion in model container [2022-11-18 20:13:05,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:13:05" (2/3) ... [2022-11-18 20:13:05,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b33de36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:13:05, skipping insertion in model container [2022-11-18 20:13:05,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:13:05" (3/3) ... [2022-11-18 20:13:05,858 INFO L112 eAbstractionObserver]: Analyzing ICFG floating_read-10.i [2022-11-18 20:13:05,886 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:13:05,918 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:13:05,918 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-18 20:13:05,918 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:13:06,067 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-18 20:13:06,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 69 transitions, 146 flow [2022-11-18 20:13:06,224 INFO L130 PetriNetUnfolder]: 7/99 cut-off events. [2022-11-18 20:13:06,228 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 20:13:06,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 99 events. 7/99 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 156 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 51. Up to 4 conditions per place. [2022-11-18 20:13:06,241 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 69 transitions, 146 flow [2022-11-18 20:13:06,249 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 69 transitions, 146 flow [2022-11-18 20:13:06,280 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:13:06,293 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;@5330ff29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:13:06,294 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-18 20:13:06,319 INFO L130 PetriNetUnfolder]: 0/18 cut-off events. [2022-11-18 20:13:06,320 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:13:06,321 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:13:06,322 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:06,323 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2022-11-18 20:13:06,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:06,333 INFO L85 PathProgramCache]: Analyzing trace with hash 198072736, now seen corresponding path program 1 times [2022-11-18 20:13:06,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:06,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945652093] [2022-11-18 20:13:06,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:06,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:06,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:06,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:06,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:13:06,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945652093] [2022-11-18 20:13:06,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945652093] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:13:06,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:13:06,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:13:06,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345067747] [2022-11-18 20:13:06,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:13:06,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:13:06,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:13:06,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:13:06,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:13:06,816 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 69 [2022-11-18 20:13:06,821 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 69 transitions, 146 flow. Second operand has 2 states, 2 states have (on average 59.5) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:06,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:13:06,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 69 [2022-11-18 20:13:06,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:13:06,924 INFO L130 PetriNetUnfolder]: 1/89 cut-off events. [2022-11-18 20:13:06,924 INFO L131 PetriNetUnfolder]: For 4/5 co-relation queries the response was YES. [2022-11-18 20:13:06,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 89 events. 1/89 cut-off events. For 4/5 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 136 event pairs, 0 based on Foata normal form. 6/85 useless extension candidates. Maximal degree in co-relation 4. Up to 5 conditions per place. [2022-11-18 20:13:06,927 INFO L137 encePairwiseOnDemand]: 64/69 looper letters, 4 selfloop transitions, 0 changer transitions 8/63 dead transitions. [2022-11-18 20:13:06,927 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 63 transitions, 142 flow [2022-11-18 20:13:06,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:13:06,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 20:13:06,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 127 transitions. [2022-11-18 20:13:06,950 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9202898550724637 [2022-11-18 20:13:06,952 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 127 transitions. [2022-11-18 20:13:06,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 127 transitions. [2022-11-18 20:13:06,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:13:06,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 127 transitions. [2022-11-18 20:13:06,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 63.5) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:06,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:06,980 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:06,983 INFO L175 Difference]: Start difference. First operand has 68 places, 69 transitions, 146 flow. Second operand 2 states and 127 transitions. [2022-11-18 20:13:06,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 63 transitions, 142 flow [2022-11-18 20:13:06,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 63 transitions, 142 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:13:07,002 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 118 flow [2022-11-18 20:13:07,006 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=118, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2022-11-18 20:13:07,012 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -2 predicate places. [2022-11-18 20:13:07,013 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 118 flow [2022-11-18 20:13:07,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 59.5) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:07,014 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:13:07,014 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:07,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:13:07,016 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2022-11-18 20:13:07,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:07,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1680329326, now seen corresponding path program 1 times [2022-11-18 20:13:07,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:07,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902584704] [2022-11-18 20:13:07,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:07,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:07,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:07,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:07,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:13:07,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902584704] [2022-11-18 20:13:07,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902584704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:13:07,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:13:07,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:13:07,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379305101] [2022-11-18 20:13:07,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:13:07,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:13:07,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:13:07,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:13:07,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:13:07,223 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 69 [2022-11-18 20:13:07,224 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:07,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:13:07,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 69 [2022-11-18 20:13:07,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:13:07,335 INFO L130 PetriNetUnfolder]: 5/94 cut-off events. [2022-11-18 20:13:07,335 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 20:13:07,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 94 events. 5/94 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 129 event pairs, 1 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 122. Up to 16 conditions per place. [2022-11-18 20:13:07,339 INFO L137 encePairwiseOnDemand]: 66/69 looper letters, 12 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2022-11-18 20:13:07,339 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 58 transitions, 152 flow [2022-11-18 20:13:07,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:13:07,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:13:07,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 171 transitions. [2022-11-18 20:13:07,351 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8260869565217391 [2022-11-18 20:13:07,351 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 171 transitions. [2022-11-18 20:13:07,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 171 transitions. [2022-11-18 20:13:07,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:13:07,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 171 transitions. [2022-11-18 20:13:07,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:07,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:07,361 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:07,362 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 118 flow. Second operand 3 states and 171 transitions. [2022-11-18 20:13:07,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 58 transitions, 152 flow [2022-11-18 20:13:07,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 58 transitions, 152 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:13:07,365 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 126 flow [2022-11-18 20:13:07,366 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2022-11-18 20:13:07,367 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -7 predicate places. [2022-11-18 20:13:07,367 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 126 flow [2022-11-18 20:13:07,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:07,369 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:13:07,369 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:07,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:13:07,370 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2022-11-18 20:13:07,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:07,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1418593939, now seen corresponding path program 1 times [2022-11-18 20:13:07,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:07,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275766963] [2022-11-18 20:13:07,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:07,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:07,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:07,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:07,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:13:07,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275766963] [2022-11-18 20:13:07,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275766963] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:13:07,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224579361] [2022-11-18 20:13:07,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:07,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:13:07,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:13:07,706 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:13:07,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:13:07,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:07,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:13:07,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:13:07,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:13:07,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:13:07,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224579361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:13:07,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:13:07,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-18 20:13:07,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088801689] [2022-11-18 20:13:07,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:13:07,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:13:07,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:13:07,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:13:07,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:13:07,854 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2022-11-18 20:13:07,854 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:07,855 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:13:07,855 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2022-11-18 20:13:07,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:13:07,906 INFO L130 PetriNetUnfolder]: 1/99 cut-off events. [2022-11-18 20:13:07,906 INFO L131 PetriNetUnfolder]: For 8/9 co-relation queries the response was YES. [2022-11-18 20:13:07,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 99 events. 1/99 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 127 event pairs, 0 based on Foata normal form. 1/94 useless extension candidates. Maximal degree in co-relation 121. Up to 8 conditions per place. [2022-11-18 20:13:07,907 INFO L137 encePairwiseOnDemand]: 65/69 looper letters, 7 selfloop transitions, 3 changer transitions 0/58 dead transitions. [2022-11-18 20:13:07,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 58 transitions, 155 flow [2022-11-18 20:13:07,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:13:07,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:13:07,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 179 transitions. [2022-11-18 20:13:07,910 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8647342995169082 [2022-11-18 20:13:07,910 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 179 transitions. [2022-11-18 20:13:07,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 179 transitions. [2022-11-18 20:13:07,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:13:07,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 179 transitions. [2022-11-18 20:13:07,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:07,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:07,913 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:07,914 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 126 flow. Second operand 3 states and 179 transitions. [2022-11-18 20:13:07,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 58 transitions, 155 flow [2022-11-18 20:13:07,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 58 transitions, 151 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:13:07,917 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 144 flow [2022-11-18 20:13:07,917 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2022-11-18 20:13:07,918 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -5 predicate places. [2022-11-18 20:13:07,919 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 144 flow [2022-11-18 20:13:07,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:07,919 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:13:07,920 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:07,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:13:08,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:13:08,132 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2022-11-18 20:13:08,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:08,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1765606273, now seen corresponding path program 1 times [2022-11-18 20:13:08,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:08,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142699125] [2022-11-18 20:13:08,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:08,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:08,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:13:08,157 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:13:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:13:08,195 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:13:08,196 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:13:08,197 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2022-11-18 20:13:08,200 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 6 remaining) [2022-11-18 20:13:08,201 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (3 of 6 remaining) [2022-11-18 20:13:08,201 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (2 of 6 remaining) [2022-11-18 20:13:08,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 6 remaining) [2022-11-18 20:13:08,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 6 remaining) [2022-11-18 20:13:08,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:13:08,203 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-18 20:13:08,206 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:13:08,206 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 20:13:08,226 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 20:13:08,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 77 transitions, 172 flow [2022-11-18 20:13:08,259 INFO L130 PetriNetUnfolder]: 13/168 cut-off events. [2022-11-18 20:13:08,263 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-18 20:13:08,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 168 events. 13/168 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 334 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 101. Up to 8 conditions per place. [2022-11-18 20:13:08,265 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 77 transitions, 172 flow [2022-11-18 20:13:08,267 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 77 transitions, 172 flow [2022-11-18 20:13:08,275 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:13:08,281 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;@5330ff29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:13:08,282 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-18 20:13:08,285 INFO L130 PetriNetUnfolder]: 0/18 cut-off events. [2022-11-18 20:13:08,289 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:13:08,290 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:13:08,290 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:08,290 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2022-11-18 20:13:08,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:08,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1280739507, now seen corresponding path program 1 times [2022-11-18 20:13:08,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:08,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575531249] [2022-11-18 20:13:08,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:08,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:08,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:08,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:08,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:13:08,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575531249] [2022-11-18 20:13:08,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575531249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:13:08,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:13:08,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:13:08,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552591838] [2022-11-18 20:13:08,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:13:08,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:13:08,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:13:08,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:13:08,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:13:08,331 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 77 [2022-11-18 20:13:08,332 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 77 transitions, 172 flow. Second operand has 2 states, 2 states have (on average 63.5) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:08,332 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:13:08,332 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 77 [2022-11-18 20:13:08,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:13:08,400 INFO L130 PetriNetUnfolder]: 7/185 cut-off events. [2022-11-18 20:13:08,400 INFO L131 PetriNetUnfolder]: For 31/40 co-relation queries the response was YES. [2022-11-18 20:13:08,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 185 events. 7/185 cut-off events. For 31/40 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 461 event pairs, 4 based on Foata normal form. 12/175 useless extension candidates. Maximal degree in co-relation 95. Up to 18 conditions per place. [2022-11-18 20:13:08,402 INFO L137 encePairwiseOnDemand]: 71/77 looper letters, 7 selfloop transitions, 0 changer transitions 0/70 dead transitions. [2022-11-18 20:13:08,402 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 70 transitions, 172 flow [2022-11-18 20:13:08,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:13:08,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 20:13:08,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 139 transitions. [2022-11-18 20:13:08,404 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9025974025974026 [2022-11-18 20:13:08,405 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 139 transitions. [2022-11-18 20:13:08,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 139 transitions. [2022-11-18 20:13:08,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:13:08,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 139 transitions. [2022-11-18 20:13:08,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:08,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:08,408 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:08,408 INFO L175 Difference]: Start difference. First operand has 77 places, 77 transitions, 172 flow. Second operand 2 states and 139 transitions. [2022-11-18 20:13:08,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 70 transitions, 172 flow [2022-11-18 20:13:08,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 70 transitions, 172 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:13:08,411 INFO L231 Difference]: Finished difference. Result has 74 places, 70 transitions, 158 flow [2022-11-18 20:13:08,412 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=158, PETRI_PLACES=74, PETRI_TRANSITIONS=70} [2022-11-18 20:13:08,413 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, -3 predicate places. [2022-11-18 20:13:08,413 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 70 transitions, 158 flow [2022-11-18 20:13:08,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 63.5) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:08,414 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:13:08,414 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:08,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:13:08,415 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2022-11-18 20:13:08,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:08,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1222014171, now seen corresponding path program 1 times [2022-11-18 20:13:08,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:08,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924957300] [2022-11-18 20:13:08,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:08,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:08,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:08,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:08,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:13:08,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924957300] [2022-11-18 20:13:08,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924957300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:13:08,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:13:08,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:13:08,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032238223] [2022-11-18 20:13:08,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:13:08,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:13:08,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:13:08,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:13:08,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:13:08,463 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 77 [2022-11-18 20:13:08,463 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 70 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:08,463 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:13:08,464 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 77 [2022-11-18 20:13:08,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:13:08,576 INFO L130 PetriNetUnfolder]: 32/330 cut-off events. [2022-11-18 20:13:08,576 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-11-18 20:13:08,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 433 conditions, 330 events. 32/330 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1439 event pairs, 12 based on Foata normal form. 0/294 useless extension candidates. Maximal degree in co-relation 428. Up to 69 conditions per place. [2022-11-18 20:13:08,584 INFO L137 encePairwiseOnDemand]: 74/77 looper letters, 17 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2022-11-18 20:13:08,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 75 transitions, 206 flow [2022-11-18 20:13:08,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:13:08,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:13:08,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 188 transitions. [2022-11-18 20:13:08,587 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8138528138528138 [2022-11-18 20:13:08,587 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 188 transitions. [2022-11-18 20:13:08,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 188 transitions. [2022-11-18 20:13:08,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:13:08,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 188 transitions. [2022-11-18 20:13:08,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:08,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:08,592 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:08,592 INFO L175 Difference]: Start difference. First operand has 74 places, 70 transitions, 158 flow. Second operand 3 states and 188 transitions. [2022-11-18 20:13:08,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 75 transitions, 206 flow [2022-11-18 20:13:08,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 75 transitions, 206 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:13:08,598 INFO L231 Difference]: Finished difference. Result has 77 places, 71 transitions, 170 flow [2022-11-18 20:13:08,598 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=77, PETRI_TRANSITIONS=71} [2022-11-18 20:13:08,604 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 0 predicate places. [2022-11-18 20:13:08,605 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 71 transitions, 170 flow [2022-11-18 20:13:08,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:08,605 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:13:08,605 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:08,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:13:08,606 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2022-11-18 20:13:08,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:08,607 INFO L85 PathProgramCache]: Analyzing trace with hash 936904422, now seen corresponding path program 1 times [2022-11-18 20:13:08,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:08,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734666003] [2022-11-18 20:13:08,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:08,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:08,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:08,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:08,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:13:08,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734666003] [2022-11-18 20:13:08,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734666003] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:13:08,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017117631] [2022-11-18 20:13:08,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:08,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:13:08,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:13:08,739 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:13:08,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:13:08,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:08,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:13:08,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:13:08,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:13:08,905 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:13:08,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017117631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:13:08,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:13:08,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-18 20:13:08,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248108226] [2022-11-18 20:13:08,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:13:08,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:13:08,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:13:08,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:13:08,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:13:08,908 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 77 [2022-11-18 20:13:08,909 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 71 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:08,909 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:13:08,909 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 77 [2022-11-18 20:13:08,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:13:09,040 INFO L130 PetriNetUnfolder]: 23/385 cut-off events. [2022-11-18 20:13:09,040 INFO L131 PetriNetUnfolder]: For 54/64 co-relation queries the response was YES. [2022-11-18 20:13:09,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 385 events. 23/385 cut-off events. For 54/64 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1936 event pairs, 6 based on Foata normal form. 3/345 useless extension candidates. Maximal degree in co-relation 476. Up to 41 conditions per place. [2022-11-18 20:13:09,044 INFO L137 encePairwiseOnDemand]: 72/77 looper letters, 11 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2022-11-18 20:13:09,044 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 76 transitions, 216 flow [2022-11-18 20:13:09,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:13:09,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:13:09,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 196 transitions. [2022-11-18 20:13:09,047 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8484848484848485 [2022-11-18 20:13:09,047 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 196 transitions. [2022-11-18 20:13:09,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 196 transitions. [2022-11-18 20:13:09,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:13:09,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 196 transitions. [2022-11-18 20:13:09,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:09,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:09,052 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:09,053 INFO L175 Difference]: Start difference. First operand has 77 places, 71 transitions, 170 flow. Second operand 3 states and 196 transitions. [2022-11-18 20:13:09,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 76 transitions, 216 flow [2022-11-18 20:13:09,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 76 transitions, 214 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:13:09,059 INFO L231 Difference]: Finished difference. Result has 80 places, 74 transitions, 198 flow [2022-11-18 20:13:09,060 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=80, PETRI_TRANSITIONS=74} [2022-11-18 20:13:09,063 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 3 predicate places. [2022-11-18 20:13:09,063 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 74 transitions, 198 flow [2022-11-18 20:13:09,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:09,069 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:13:09,070 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:09,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:13:09,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:13:09,277 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2022-11-18 20:13:09,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:09,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1671195300, now seen corresponding path program 1 times [2022-11-18 20:13:09,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:09,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680592774] [2022-11-18 20:13:09,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:09,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:09,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:09,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:09,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:13:09,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680592774] [2022-11-18 20:13:09,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680592774] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:13:09,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609062968] [2022-11-18 20:13:09,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:09,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:13:09,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:13:09,378 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:13:09,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:13:09,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:09,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:13:09,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:13:09,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:09,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:13:09,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:09,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609062968] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:13:09,702 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:13:09,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 20:13:09,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600358922] [2022-11-18 20:13:09,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:13:09,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:13:09,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:13:09,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:13:09,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:13:09,709 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 77 [2022-11-18 20:13:09,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 74 transitions, 198 flow. Second operand has 10 states, 10 states have (on average 57.5) internal successors, (575), 10 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:09,711 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:13:09,711 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 77 [2022-11-18 20:13:09,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:13:09,893 INFO L130 PetriNetUnfolder]: 27/121 cut-off events. [2022-11-18 20:13:09,894 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2022-11-18 20:13:09,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 121 events. 27/121 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 310 event pairs, 0 based on Foata normal form. 6/127 useless extension candidates. Maximal degree in co-relation 242. Up to 31 conditions per place. [2022-11-18 20:13:09,895 INFO L137 encePairwiseOnDemand]: 72/77 looper letters, 21 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2022-11-18 20:13:09,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 58 transitions, 212 flow [2022-11-18 20:13:09,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:13:09,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:13:09,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 525 transitions. [2022-11-18 20:13:09,899 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7575757575757576 [2022-11-18 20:13:09,900 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 525 transitions. [2022-11-18 20:13:09,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 525 transitions. [2022-11-18 20:13:09,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:13:09,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 525 transitions. [2022-11-18 20:13:09,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 58.333333333333336) internal successors, (525), 9 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:09,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 77.0) internal successors, (770), 10 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:09,906 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 77.0) internal successors, (770), 10 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:09,906 INFO L175 Difference]: Start difference. First operand has 80 places, 74 transitions, 198 flow. Second operand 9 states and 525 transitions. [2022-11-18 20:13:09,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 58 transitions, 212 flow [2022-11-18 20:13:09,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 58 transitions, 210 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-18 20:13:09,909 INFO L231 Difference]: Finished difference. Result has 60 places, 45 transitions, 124 flow [2022-11-18 20:13:09,910 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=124, PETRI_PLACES=60, PETRI_TRANSITIONS=45} [2022-11-18 20:13:09,911 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, -17 predicate places. [2022-11-18 20:13:09,911 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 45 transitions, 124 flow [2022-11-18 20:13:09,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.5) internal successors, (575), 10 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:09,912 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:13:09,913 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:09,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:13:10,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-18 20:13:10,123 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2022-11-18 20:13:10,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:10,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1513828090, now seen corresponding path program 1 times [2022-11-18 20:13:10,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:10,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080883217] [2022-11-18 20:13:10,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:10,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:10,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:13:10,166 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:13:10,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:13:10,205 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:13:10,211 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:13:10,212 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2022-11-18 20:13:10,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2022-11-18 20:13:10,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (4 of 7 remaining) [2022-11-18 20:13:10,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2022-11-18 20:13:10,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2022-11-18 20:13:10,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2022-11-18 20:13:10,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2022-11-18 20:13:10,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:13:10,215 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-18 20:13:10,216 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:13:10,216 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-18 20:13:10,243 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 20:13:10,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 85 transitions, 200 flow [2022-11-18 20:13:10,311 INFO L130 PetriNetUnfolder]: 24/282 cut-off events. [2022-11-18 20:13:10,311 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-18 20:13:10,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 282 events. 24/282 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 728 event pairs, 1 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 176. Up to 16 conditions per place. [2022-11-18 20:13:10,312 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 85 transitions, 200 flow [2022-11-18 20:13:10,314 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 85 transitions, 200 flow [2022-11-18 20:13:10,316 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:13:10,317 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;@5330ff29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:13:10,317 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-18 20:13:10,321 INFO L130 PetriNetUnfolder]: 0/18 cut-off events. [2022-11-18 20:13:10,321 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:13:10,321 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:13:10,322 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:10,322 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-11-18 20:13:10,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:10,323 INFO L85 PathProgramCache]: Analyzing trace with hash -291591166, now seen corresponding path program 1 times [2022-11-18 20:13:10,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:10,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919239955] [2022-11-18 20:13:10,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:10,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:10,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:10,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:13:10,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919239955] [2022-11-18 20:13:10,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919239955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:13:10,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:13:10,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:13:10,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333092119] [2022-11-18 20:13:10,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:13:10,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:13:10,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:13:10,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:13:10,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:13:10,349 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 85 [2022-11-18 20:13:10,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 85 transitions, 200 flow. Second operand has 2 states, 2 states have (on average 67.5) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:10,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:13:10,350 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 85 [2022-11-18 20:13:10,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:13:10,497 INFO L130 PetriNetUnfolder]: 36/448 cut-off events. [2022-11-18 20:13:10,497 INFO L131 PetriNetUnfolder]: For 115/170 co-relation queries the response was YES. [2022-11-18 20:13:10,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 574 conditions, 448 events. 36/448 cut-off events. For 115/170 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2013 event pairs, 27 based on Foata normal form. 28/420 useless extension candidates. Maximal degree in co-relation 285. Up to 68 conditions per place. [2022-11-18 20:13:10,502 INFO L137 encePairwiseOnDemand]: 78/85 looper letters, 10 selfloop transitions, 0 changer transitions 0/77 dead transitions. [2022-11-18 20:13:10,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 77 transitions, 204 flow [2022-11-18 20:13:10,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:13:10,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 20:13:10,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 151 transitions. [2022-11-18 20:13:10,504 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.888235294117647 [2022-11-18 20:13:10,504 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 151 transitions. [2022-11-18 20:13:10,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 151 transitions. [2022-11-18 20:13:10,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:13:10,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 151 transitions. [2022-11-18 20:13:10,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:10,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:10,507 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:10,508 INFO L175 Difference]: Start difference. First operand has 86 places, 85 transitions, 200 flow. Second operand 2 states and 151 transitions. [2022-11-18 20:13:10,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 77 transitions, 204 flow [2022-11-18 20:13:10,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 77 transitions, 204 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:13:10,513 INFO L231 Difference]: Finished difference. Result has 82 places, 77 transitions, 184 flow [2022-11-18 20:13:10,513 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=184, PETRI_PLACES=82, PETRI_TRANSITIONS=77} [2022-11-18 20:13:10,515 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, -4 predicate places. [2022-11-18 20:13:10,516 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 77 transitions, 184 flow [2022-11-18 20:13:10,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 67.5) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:10,516 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:13:10,517 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:10,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:13:10,519 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-11-18 20:13:10,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:10,520 INFO L85 PathProgramCache]: Analyzing trace with hash -399494064, now seen corresponding path program 1 times [2022-11-18 20:13:10,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:10,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14307466] [2022-11-18 20:13:10,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:10,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:10,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:10,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:10,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:13:10,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14307466] [2022-11-18 20:13:10,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14307466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:13:10,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:13:10,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:13:10,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158583721] [2022-11-18 20:13:10,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:13:10,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:13:10,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:13:10,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:13:10,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:13:10,584 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 85 [2022-11-18 20:13:10,584 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 77 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:10,584 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:13:10,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 85 [2022-11-18 20:13:10,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:13:10,785 INFO L130 PetriNetUnfolder]: 124/761 cut-off events. [2022-11-18 20:13:10,785 INFO L131 PetriNetUnfolder]: For 107/116 co-relation queries the response was YES. [2022-11-18 20:13:10,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1056 conditions, 761 events. 124/761 cut-off events. For 107/116 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4432 event pairs, 67 based on Foata normal form. 0/685 useless extension candidates. Maximal degree in co-relation 1050. Up to 219 conditions per place. [2022-11-18 20:13:10,793 INFO L137 encePairwiseOnDemand]: 82/85 looper letters, 20 selfloop transitions, 2 changer transitions 0/82 dead transitions. [2022-11-18 20:13:10,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 82 transitions, 238 flow [2022-11-18 20:13:10,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:13:10,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:13:10,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 203 transitions. [2022-11-18 20:13:10,796 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.796078431372549 [2022-11-18 20:13:10,796 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 203 transitions. [2022-11-18 20:13:10,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 203 transitions. [2022-11-18 20:13:10,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:13:10,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 203 transitions. [2022-11-18 20:13:10,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:10,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:10,799 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:10,799 INFO L175 Difference]: Start difference. First operand has 82 places, 77 transitions, 184 flow. Second operand 3 states and 203 transitions. [2022-11-18 20:13:10,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 82 transitions, 238 flow [2022-11-18 20:13:10,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 82 transitions, 238 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:13:10,806 INFO L231 Difference]: Finished difference. Result has 85 places, 78 transitions, 196 flow [2022-11-18 20:13:10,806 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=85, PETRI_TRANSITIONS=78} [2022-11-18 20:13:10,808 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, -1 predicate places. [2022-11-18 20:13:10,808 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 78 transitions, 196 flow [2022-11-18 20:13:10,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:10,809 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:13:10,809 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:10,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:13:10,810 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-11-18 20:13:10,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:10,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1587672897, now seen corresponding path program 1 times [2022-11-18 20:13:10,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:10,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901992281] [2022-11-18 20:13:10,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:10,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:10,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:10,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:13:10,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901992281] [2022-11-18 20:13:10,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901992281] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:13:10,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370254921] [2022-11-18 20:13:10,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:10,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:13:10,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:13:10,943 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:13:10,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:13:11,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:11,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:13:11,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:13:11,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:13:11,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:13:11,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370254921] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:13:11,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:13:11,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-18 20:13:11,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941797548] [2022-11-18 20:13:11,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:13:11,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:13:11,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:13:11,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:13:11,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:13:11,079 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 85 [2022-11-18 20:13:11,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 78 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:11,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:13:11,080 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 85 [2022-11-18 20:13:11,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:13:11,335 INFO L130 PetriNetUnfolder]: 123/1143 cut-off events. [2022-11-18 20:13:11,335 INFO L131 PetriNetUnfolder]: For 212/269 co-relation queries the response was YES. [2022-11-18 20:13:11,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1476 conditions, 1143 events. 123/1143 cut-off events. For 212/269 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 8145 event pairs, 40 based on Foata normal form. 6/1018 useless extension candidates. Maximal degree in co-relation 1468. Up to 166 conditions per place. [2022-11-18 20:13:11,346 INFO L137 encePairwiseOnDemand]: 79/85 looper letters, 15 selfloop transitions, 5 changer transitions 0/85 dead transitions. [2022-11-18 20:13:11,346 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 85 transitions, 259 flow [2022-11-18 20:13:11,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:13:11,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:13:11,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 213 transitions. [2022-11-18 20:13:11,349 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8352941176470589 [2022-11-18 20:13:11,349 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 213 transitions. [2022-11-18 20:13:11,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 213 transitions. [2022-11-18 20:13:11,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:13:11,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 213 transitions. [2022-11-18 20:13:11,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:11,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:11,352 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:11,353 INFO L175 Difference]: Start difference. First operand has 85 places, 78 transitions, 196 flow. Second operand 3 states and 213 transitions. [2022-11-18 20:13:11,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 85 transitions, 259 flow [2022-11-18 20:13:11,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 85 transitions, 257 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:13:11,357 INFO L231 Difference]: Finished difference. Result has 88 places, 82 transitions, 232 flow [2022-11-18 20:13:11,357 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=88, PETRI_TRANSITIONS=82} [2022-11-18 20:13:11,358 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 2 predicate places. [2022-11-18 20:13:11,359 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 82 transitions, 232 flow [2022-11-18 20:13:11,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:11,359 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:13:11,360 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:11,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:13:11,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 20:13:11,566 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-11-18 20:13:11,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:11,567 INFO L85 PathProgramCache]: Analyzing trace with hash -2109476918, now seen corresponding path program 1 times [2022-11-18 20:13:11,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:11,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055339890] [2022-11-18 20:13:11,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:11,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:11,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:11,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:11,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:13:11,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055339890] [2022-11-18 20:13:11,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055339890] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:13:11,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425166339] [2022-11-18 20:13:11,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:11,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:13:11,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:13:11,667 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:13:11,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:13:11,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:11,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:13:11,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:13:11,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:11,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:13:11,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:11,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425166339] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:13:11,872 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:13:11,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 20:13:11,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075010249] [2022-11-18 20:13:11,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:13:11,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:13:11,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:13:11,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:13:11,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:13:11,876 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 85 [2022-11-18 20:13:11,877 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 82 transitions, 232 flow. Second operand has 10 states, 10 states have (on average 61.5) internal successors, (615), 10 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:11,878 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:13:11,878 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 85 [2022-11-18 20:13:11,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:13:12,285 INFO L130 PetriNetUnfolder]: 197/1266 cut-off events. [2022-11-18 20:13:12,285 INFO L131 PetriNetUnfolder]: For 431/454 co-relation queries the response was YES. [2022-11-18 20:13:12,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2018 conditions, 1266 events. 197/1266 cut-off events. For 431/454 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 8658 event pairs, 34 based on Foata normal form. 6/1177 useless extension candidates. Maximal degree in co-relation 2009. Up to 203 conditions per place. [2022-11-18 20:13:12,300 INFO L137 encePairwiseOnDemand]: 79/85 looper letters, 35 selfloop transitions, 9 changer transitions 0/104 dead transitions. [2022-11-18 20:13:12,301 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 104 transitions, 390 flow [2022-11-18 20:13:12,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:13:12,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:13:12,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 574 transitions. [2022-11-18 20:13:12,304 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7503267973856209 [2022-11-18 20:13:12,305 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 574 transitions. [2022-11-18 20:13:12,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 574 transitions. [2022-11-18 20:13:12,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:13:12,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 574 transitions. [2022-11-18 20:13:12,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 63.77777777777778) internal successors, (574), 9 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:12,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:12,312 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:12,313 INFO L175 Difference]: Start difference. First operand has 88 places, 82 transitions, 232 flow. Second operand 9 states and 574 transitions. [2022-11-18 20:13:12,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 104 transitions, 390 flow [2022-11-18 20:13:12,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 104 transitions, 380 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:13:12,318 INFO L231 Difference]: Finished difference. Result has 97 places, 88 transitions, 272 flow [2022-11-18 20:13:12,318 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=272, PETRI_PLACES=97, PETRI_TRANSITIONS=88} [2022-11-18 20:13:12,319 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 11 predicate places. [2022-11-18 20:13:12,319 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 88 transitions, 272 flow [2022-11-18 20:13:12,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 61.5) internal successors, (615), 10 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:12,320 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:13:12,321 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 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] [2022-11-18 20:13:12,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:13:12,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 20:13:12,529 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-11-18 20:13:12,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:12,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1472767584, now seen corresponding path program 1 times [2022-11-18 20:13:12,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:12,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160160802] [2022-11-18 20:13:12,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:12,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:13:12,566 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:13:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:13:12,611 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:13:12,612 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:13:12,612 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2022-11-18 20:13:12,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (6 of 8 remaining) [2022-11-18 20:13:12,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 8 remaining) [2022-11-18 20:13:12,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (4 of 8 remaining) [2022-11-18 20:13:12,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 8 remaining) [2022-11-18 20:13:12,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 8 remaining) [2022-11-18 20:13:12,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 8 remaining) [2022-11-18 20:13:12,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 8 remaining) [2022-11-18 20:13:12,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:13:12,617 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-18 20:13:12,619 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:13:12,619 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-18 20:13:12,652 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-18 20:13:12,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 93 transitions, 230 flow [2022-11-18 20:13:12,734 INFO L130 PetriNetUnfolder]: 47/488 cut-off events. [2022-11-18 20:13:12,734 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-11-18 20:13:12,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 543 conditions, 488 events. 47/488 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1723 event pairs, 6 based on Foata normal form. 0/415 useless extension candidates. Maximal degree in co-relation 302. Up to 32 conditions per place. [2022-11-18 20:13:12,736 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 93 transitions, 230 flow [2022-11-18 20:13:12,739 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 93 transitions, 230 flow [2022-11-18 20:13:12,743 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:13:12,744 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;@5330ff29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:13:12,744 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-18 20:13:12,747 INFO L130 PetriNetUnfolder]: 0/18 cut-off events. [2022-11-18 20:13:12,747 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:13:12,747 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:13:12,748 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:12,748 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-18 20:13:12,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:12,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1129449537, now seen corresponding path program 1 times [2022-11-18 20:13:12,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:12,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943894050] [2022-11-18 20:13:12,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:12,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:12,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:12,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:13:12,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943894050] [2022-11-18 20:13:12,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943894050] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:13:12,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:13:12,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:13:12,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174688585] [2022-11-18 20:13:12,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:13:12,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:13:12,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:13:12,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:13:12,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:13:12,772 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 93 [2022-11-18 20:13:12,772 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 93 transitions, 230 flow. Second operand has 2 states, 2 states have (on average 71.5) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:12,773 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:13:12,773 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 93 [2022-11-18 20:13:12,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:13:13,079 INFO L130 PetriNetUnfolder]: 157/1229 cut-off events. [2022-11-18 20:13:13,079 INFO L131 PetriNetUnfolder]: For 498/783 co-relation queries the response was YES. [2022-11-18 20:13:13,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1660 conditions, 1229 events. 157/1229 cut-off events. For 498/783 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 8156 event pairs, 128 based on Foata normal form. 76/1146 useless extension candidates. Maximal degree in co-relation 911. Up to 250 conditions per place. [2022-11-18 20:13:13,093 INFO L137 encePairwiseOnDemand]: 85/93 looper letters, 13 selfloop transitions, 0 changer transitions 0/84 dead transitions. [2022-11-18 20:13:13,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 84 transitions, 238 flow [2022-11-18 20:13:13,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:13:13,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 20:13:13,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 163 transitions. [2022-11-18 20:13:13,108 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8763440860215054 [2022-11-18 20:13:13,108 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 163 transitions. [2022-11-18 20:13:13,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 163 transitions. [2022-11-18 20:13:13,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:13:13,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 163 transitions. [2022-11-18 20:13:13,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 81.5) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:13,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:13,111 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:13,111 INFO L175 Difference]: Start difference. First operand has 95 places, 93 transitions, 230 flow. Second operand 2 states and 163 transitions. [2022-11-18 20:13:13,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 84 transitions, 238 flow [2022-11-18 20:13:13,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 84 transitions, 238 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:13:13,115 INFO L231 Difference]: Finished difference. Result has 90 places, 84 transitions, 212 flow [2022-11-18 20:13:13,115 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=212, PETRI_PLACES=90, PETRI_TRANSITIONS=84} [2022-11-18 20:13:13,116 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, -5 predicate places. [2022-11-18 20:13:13,116 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 84 transitions, 212 flow [2022-11-18 20:13:13,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 71.5) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:13,117 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:13:13,117 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:13,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 20:13:13,117 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-18 20:13:13,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:13,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1110771917, now seen corresponding path program 1 times [2022-11-18 20:13:13,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:13,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025804670] [2022-11-18 20:13:13,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:13,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:13,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:13,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:13:13,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025804670] [2022-11-18 20:13:13,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025804670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:13:13,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:13:13,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:13:13,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953901666] [2022-11-18 20:13:13,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:13:13,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:13:13,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:13:13,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:13:13,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:13:13,154 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 93 [2022-11-18 20:13:13,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 84 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:13,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:13:13,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 93 [2022-11-18 20:13:13,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:13:13,616 INFO L130 PetriNetUnfolder]: 416/2006 cut-off events. [2022-11-18 20:13:13,616 INFO L131 PetriNetUnfolder]: For 483/519 co-relation queries the response was YES. [2022-11-18 20:13:13,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2881 conditions, 2006 events. 416/2006 cut-off events. For 483/519 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 14422 event pairs, 266 based on Foata normal form. 0/1809 useless extension candidates. Maximal degree in co-relation 2874. Up to 649 conditions per place. [2022-11-18 20:13:13,637 INFO L137 encePairwiseOnDemand]: 90/93 looper letters, 23 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2022-11-18 20:13:13,637 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 89 transitions, 272 flow [2022-11-18 20:13:13,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:13:13,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:13:13,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2022-11-18 20:13:13,640 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7813620071684588 [2022-11-18 20:13:13,640 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 218 transitions. [2022-11-18 20:13:13,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 218 transitions. [2022-11-18 20:13:13,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:13:13,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 218 transitions. [2022-11-18 20:13:13,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:13,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:13,644 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:13,644 INFO L175 Difference]: Start difference. First operand has 90 places, 84 transitions, 212 flow. Second operand 3 states and 218 transitions. [2022-11-18 20:13:13,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 89 transitions, 272 flow [2022-11-18 20:13:13,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 89 transitions, 272 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:13:13,648 INFO L231 Difference]: Finished difference. Result has 93 places, 85 transitions, 224 flow [2022-11-18 20:13:13,649 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=93, PETRI_TRANSITIONS=85} [2022-11-18 20:13:13,650 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, -2 predicate places. [2022-11-18 20:13:13,650 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 85 transitions, 224 flow [2022-11-18 20:13:13,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:13,651 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:13:13,651 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:13,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 20:13:13,652 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-18 20:13:13,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:13,652 INFO L85 PathProgramCache]: Analyzing trace with hash -924067932, now seen corresponding path program 1 times [2022-11-18 20:13:13,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:13,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987302798] [2022-11-18 20:13:13,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:13,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:13,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:13,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:13,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:13:13,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987302798] [2022-11-18 20:13:13,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987302798] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:13:13,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022653987] [2022-11-18 20:13:13,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:13,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:13:13,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:13:13,727 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:13:13,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:13:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:13,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:13:13,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:13:13,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:13:13,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:13:13,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022653987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:13:13,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:13:13,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-18 20:13:13,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562773083] [2022-11-18 20:13:13,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:13:13,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:13:13,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:13:13,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:13:13,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:13:13,869 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 93 [2022-11-18 20:13:13,870 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 85 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:13,870 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:13:13,870 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 93 [2022-11-18 20:13:13,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:13:14,662 INFO L130 PetriNetUnfolder]: 492/3400 cut-off events. [2022-11-18 20:13:14,662 INFO L131 PetriNetUnfolder]: For 894/1135 co-relation queries the response was YES. [2022-11-18 20:13:14,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4497 conditions, 3400 events. 492/3400 cut-off events. For 894/1135 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 31099 event pairs, 183 based on Foata normal form. 10/3034 useless extension candidates. Maximal degree in co-relation 4488. Up to 584 conditions per place. [2022-11-18 20:13:14,695 INFO L137 encePairwiseOnDemand]: 86/93 looper letters, 19 selfloop transitions, 6 changer transitions 0/94 dead transitions. [2022-11-18 20:13:14,695 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 94 transitions, 304 flow [2022-11-18 20:13:14,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:13:14,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:13:14,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 230 transitions. [2022-11-18 20:13:14,698 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8243727598566308 [2022-11-18 20:13:14,698 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 230 transitions. [2022-11-18 20:13:14,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 230 transitions. [2022-11-18 20:13:14,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:13:14,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 230 transitions. [2022-11-18 20:13:14,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:14,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:14,701 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:14,702 INFO L175 Difference]: Start difference. First operand has 93 places, 85 transitions, 224 flow. Second operand 3 states and 230 transitions. [2022-11-18 20:13:14,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 94 transitions, 304 flow [2022-11-18 20:13:14,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 94 transitions, 302 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:13:14,706 INFO L231 Difference]: Finished difference. Result has 96 places, 90 transitions, 268 flow [2022-11-18 20:13:14,707 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=96, PETRI_TRANSITIONS=90} [2022-11-18 20:13:14,708 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 1 predicate places. [2022-11-18 20:13:14,708 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 90 transitions, 268 flow [2022-11-18 20:13:14,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:14,709 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:13:14,709 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:14,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:13:14,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 20:13:14,916 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-18 20:13:14,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:14,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1834592202, now seen corresponding path program 1 times [2022-11-18 20:13:14,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:14,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109374540] [2022-11-18 20:13:14,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:14,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:14,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:14,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:14,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:13:14,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109374540] [2022-11-18 20:13:14,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109374540] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:13:14,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146289182] [2022-11-18 20:13:14,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:14,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:13:14,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:13:14,993 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:13:15,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:13:15,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:15,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:13:15,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:13:15,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:15,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:13:15,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:15,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146289182] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:13:15,225 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:13:15,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 20:13:15,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455000077] [2022-11-18 20:13:15,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:13:15,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:13:15,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:13:15,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:13:15,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:13:15,230 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 93 [2022-11-18 20:13:15,231 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 90 transitions, 268 flow. Second operand has 10 states, 10 states have (on average 65.5) internal successors, (655), 10 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:15,232 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:13:15,232 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 93 [2022-11-18 20:13:15,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:13:16,191 INFO L130 PetriNetUnfolder]: 758/3763 cut-off events. [2022-11-18 20:13:16,192 INFO L131 PetriNetUnfolder]: For 1660/1759 co-relation queries the response was YES. [2022-11-18 20:13:16,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6254 conditions, 3763 events. 758/3763 cut-off events. For 1660/1759 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 33678 event pairs, 147 based on Foata normal form. 6/3474 useless extension candidates. Maximal degree in co-relation 6244. Up to 786 conditions per place. [2022-11-18 20:13:16,230 INFO L137 encePairwiseOnDemand]: 87/93 looper letters, 40 selfloop transitions, 9 changer transitions 0/113 dead transitions. [2022-11-18 20:13:16,231 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 113 transitions, 440 flow [2022-11-18 20:13:16,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:13:16,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:13:16,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 614 transitions. [2022-11-18 20:13:16,234 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7335722819593787 [2022-11-18 20:13:16,235 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 614 transitions. [2022-11-18 20:13:16,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 614 transitions. [2022-11-18 20:13:16,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:13:16,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 614 transitions. [2022-11-18 20:13:16,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 68.22222222222223) internal successors, (614), 9 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:16,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:16,242 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:16,242 INFO L175 Difference]: Start difference. First operand has 96 places, 90 transitions, 268 flow. Second operand 9 states and 614 transitions. [2022-11-18 20:13:16,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 113 transitions, 440 flow [2022-11-18 20:13:16,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 113 transitions, 428 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:13:16,249 INFO L231 Difference]: Finished difference. Result has 105 places, 96 transitions, 306 flow [2022-11-18 20:13:16,249 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=306, PETRI_PLACES=105, PETRI_TRANSITIONS=96} [2022-11-18 20:13:16,250 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 10 predicate places. [2022-11-18 20:13:16,251 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 96 transitions, 306 flow [2022-11-18 20:13:16,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.5) internal successors, (655), 10 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:16,252 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:13:16,252 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 20:13:16,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:13:16,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 20:13:16,459 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-18 20:13:16,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:16,460 INFO L85 PathProgramCache]: Analyzing trace with hash -257989895, now seen corresponding path program 1 times [2022-11-18 20:13:16,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:16,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991933820] [2022-11-18 20:13:16,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:16,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:16,626 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:16,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:13:16,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991933820] [2022-11-18 20:13:16,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991933820] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:13:16,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491100189] [2022-11-18 20:13:16,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:16,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:13:16,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:13:16,630 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:13:16,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:13:16,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:16,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:13:16,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:13:16,847 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:16,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:13:17,026 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:17,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491100189] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:13:17,026 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:13:17,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-18 20:13:17,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403983733] [2022-11-18 20:13:17,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:13:17,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:13:17,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:13:17,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:13:17,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:13:17,031 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 93 [2022-11-18 20:13:17,033 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 96 transitions, 306 flow. Second operand has 18 states, 18 states have (on average 65.72222222222223) internal successors, (1183), 18 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:17,034 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:13:17,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 93 [2022-11-18 20:13:17,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:13:17,488 INFO L130 PetriNetUnfolder]: 279/649 cut-off events. [2022-11-18 20:13:17,489 INFO L131 PetriNetUnfolder]: For 562/562 co-relation queries the response was YES. [2022-11-18 20:13:17,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1753 conditions, 649 events. 279/649 cut-off events. For 562/562 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3208 event pairs, 0 based on Foata normal form. 24/673 useless extension candidates. Maximal degree in co-relation 1741. Up to 295 conditions per place. [2022-11-18 20:13:17,499 INFO L137 encePairwiseOnDemand]: 88/93 looper letters, 50 selfloop transitions, 13 changer transitions 0/101 dead transitions. [2022-11-18 20:13:17,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 101 transitions, 486 flow [2022-11-18 20:13:17,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:13:17,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 20:13:17,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1010 transitions. [2022-11-18 20:13:17,505 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7240143369175627 [2022-11-18 20:13:17,505 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1010 transitions. [2022-11-18 20:13:17,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1010 transitions. [2022-11-18 20:13:17,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:13:17,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1010 transitions. [2022-11-18 20:13:17,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 67.33333333333333) internal successors, (1010), 15 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:17,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 93.0) internal successors, (1488), 16 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:17,517 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 93.0) internal successors, (1488), 16 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:17,517 INFO L175 Difference]: Start difference. First operand has 105 places, 96 transitions, 306 flow. Second operand 15 states and 1010 transitions. [2022-11-18 20:13:17,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 101 transitions, 486 flow [2022-11-18 20:13:17,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 101 transitions, 457 flow, removed 9 selfloop flow, removed 4 redundant places. [2022-11-18 20:13:17,524 INFO L231 Difference]: Finished difference. Result has 88 places, 64 transitions, 216 flow [2022-11-18 20:13:17,525 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=216, PETRI_PLACES=88, PETRI_TRANSITIONS=64} [2022-11-18 20:13:17,526 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, -7 predicate places. [2022-11-18 20:13:17,526 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 64 transitions, 216 flow [2022-11-18 20:13:17,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 65.72222222222223) internal successors, (1183), 18 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:17,527 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:13:17,528 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:17,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:13:17,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:13:17,736 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-18 20:13:17,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:17,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1165116785, now seen corresponding path program 1 times [2022-11-18 20:13:17,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:17,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360656732] [2022-11-18 20:13:17,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:17,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:17,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:13:17,772 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:13:17,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:13:17,819 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:13:17,821 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:13:17,822 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2022-11-18 20:13:17,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2022-11-18 20:13:17,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2022-11-18 20:13:17,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2022-11-18 20:13:17,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2022-11-18 20:13:17,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2022-11-18 20:13:17,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2022-11-18 20:13:17,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2022-11-18 20:13:17,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2022-11-18 20:13:17,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 20:13:17,826 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-18 20:13:17,827 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:13:17,828 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-11-18 20:13:17,866 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-11-18 20:13:17,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 101 transitions, 262 flow [2022-11-18 20:13:18,048 INFO L130 PetriNetUnfolder]: 98/882 cut-off events. [2022-11-18 20:13:18,048 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2022-11-18 20:13:18,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 993 conditions, 882 events. 98/882 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4065 event pairs, 23 based on Foata normal form. 0/756 useless extension candidates. Maximal degree in co-relation 533. Up to 80 conditions per place. [2022-11-18 20:13:18,053 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 101 transitions, 262 flow [2022-11-18 20:13:18,058 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 101 transitions, 262 flow [2022-11-18 20:13:18,059 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:13:18,060 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;@5330ff29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:13:18,060 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-18 20:13:18,062 INFO L130 PetriNetUnfolder]: 0/18 cut-off events. [2022-11-18 20:13:18,063 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:13:18,063 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:13:18,063 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:18,063 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-11-18 20:13:18,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:18,064 INFO L85 PathProgramCache]: Analyzing trace with hash 500652676, now seen corresponding path program 1 times [2022-11-18 20:13:18,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:18,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623140378] [2022-11-18 20:13:18,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:18,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:18,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:18,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:18,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:13:18,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623140378] [2022-11-18 20:13:18,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623140378] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:13:18,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:13:18,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:13:18,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661378267] [2022-11-18 20:13:18,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:13:18,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:13:18,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:13:18,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:13:18,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:13:18,086 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 101 [2022-11-18 20:13:18,086 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 101 transitions, 262 flow. Second operand has 2 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:18,087 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:13:18,087 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 101 [2022-11-18 20:13:18,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:13:18,839 INFO L130 PetriNetUnfolder]: 622/3620 cut-off events. [2022-11-18 20:13:18,840 INFO L131 PetriNetUnfolder]: For 1636/2943 co-relation queries the response was YES. [2022-11-18 20:13:18,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5088 conditions, 3620 events. 622/3620 cut-off events. For 1636/2943 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 32123 event pairs, 527 based on Foata normal form. 221/3362 useless extension candidates. Maximal degree in co-relation 2965. Up to 892 conditions per place. [2022-11-18 20:13:18,948 INFO L137 encePairwiseOnDemand]: 92/101 looper letters, 16 selfloop transitions, 0 changer transitions 0/91 dead transitions. [2022-11-18 20:13:18,948 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 91 transitions, 274 flow [2022-11-18 20:13:18,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:13:18,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 20:13:18,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 175 transitions. [2022-11-18 20:13:18,951 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8663366336633663 [2022-11-18 20:13:18,951 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 175 transitions. [2022-11-18 20:13:18,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 175 transitions. [2022-11-18 20:13:18,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:13:18,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 175 transitions. [2022-11-18 20:13:18,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 87.5) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:18,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:18,954 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:18,954 INFO L175 Difference]: Start difference. First operand has 104 places, 101 transitions, 262 flow. Second operand 2 states and 175 transitions. [2022-11-18 20:13:18,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 91 transitions, 274 flow [2022-11-18 20:13:18,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 91 transitions, 274 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:13:18,965 INFO L231 Difference]: Finished difference. Result has 98 places, 91 transitions, 242 flow [2022-11-18 20:13:18,966 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=242, PETRI_PLACES=98, PETRI_TRANSITIONS=91} [2022-11-18 20:13:18,967 INFO L288 CegarLoopForPetriNet]: 104 programPoint places, -6 predicate places. [2022-11-18 20:13:18,967 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 91 transitions, 242 flow [2022-11-18 20:13:18,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:18,968 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:13:18,968 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:18,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 20:13:18,969 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-11-18 20:13:18,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:18,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1457844818, now seen corresponding path program 1 times [2022-11-18 20:13:18,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:18,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822592261] [2022-11-18 20:13:18,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:18,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:18,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:19,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:19,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:13:19,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822592261] [2022-11-18 20:13:19,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822592261] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:13:19,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:13:19,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:13:19,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898807750] [2022-11-18 20:13:19,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:13:19,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:13:19,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:13:19,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:13:19,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:13:19,014 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 101 [2022-11-18 20:13:19,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 91 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:19,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:13:19,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 101 [2022-11-18 20:13:19,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:13:20,259 INFO L130 PetriNetUnfolder]: 1308/5425 cut-off events. [2022-11-18 20:13:20,259 INFO L131 PetriNetUnfolder]: For 1746/1863 co-relation queries the response was YES. [2022-11-18 20:13:20,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7984 conditions, 5425 events. 1308/5425 cut-off events. For 1746/1863 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 47422 event pairs, 923 based on Foata normal form. 0/4878 useless extension candidates. Maximal degree in co-relation 7976. Up to 1871 conditions per place. [2022-11-18 20:13:20,312 INFO L137 encePairwiseOnDemand]: 98/101 looper letters, 26 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2022-11-18 20:13:20,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 96 transitions, 308 flow [2022-11-18 20:13:20,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:13:20,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:13:20,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 233 transitions. [2022-11-18 20:13:20,315 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.768976897689769 [2022-11-18 20:13:20,315 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 233 transitions. [2022-11-18 20:13:20,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 233 transitions. [2022-11-18 20:13:20,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:13:20,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 233 transitions. [2022-11-18 20:13:20,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:20,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:20,319 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:20,319 INFO L175 Difference]: Start difference. First operand has 98 places, 91 transitions, 242 flow. Second operand 3 states and 233 transitions. [2022-11-18 20:13:20,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 96 transitions, 308 flow [2022-11-18 20:13:20,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 96 transitions, 308 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:13:20,324 INFO L231 Difference]: Finished difference. Result has 101 places, 92 transitions, 254 flow [2022-11-18 20:13:20,324 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=254, PETRI_PLACES=101, PETRI_TRANSITIONS=92} [2022-11-18 20:13:20,325 INFO L288 CegarLoopForPetriNet]: 104 programPoint places, -3 predicate places. [2022-11-18 20:13:20,325 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 92 transitions, 254 flow [2022-11-18 20:13:20,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:20,326 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:13:20,326 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:20,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-18 20:13:20,327 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-11-18 20:13:20,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:20,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1991616527, now seen corresponding path program 1 times [2022-11-18 20:13:20,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:20,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074697148] [2022-11-18 20:13:20,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:20,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:20,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:20,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:20,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:13:20,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074697148] [2022-11-18 20:13:20,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074697148] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:13:20,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780941970] [2022-11-18 20:13:20,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:20,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:13:20,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:13:20,456 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:13:20,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 20:13:20,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:20,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:13:20,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:13:20,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:13:20,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:13:20,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780941970] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:13:20,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:13:20,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-18 20:13:20,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130631842] [2022-11-18 20:13:20,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:13:20,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:13:20,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:13:20,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:13:20,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:13:20,601 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 101 [2022-11-18 20:13:20,603 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 92 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:20,603 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:13:20,604 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 101 [2022-11-18 20:13:20,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:13:22,688 INFO L130 PetriNetUnfolder]: 1758/10152 cut-off events. [2022-11-18 20:13:22,688 INFO L131 PetriNetUnfolder]: For 3009/3879 co-relation queries the response was YES. [2022-11-18 20:13:22,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13706 conditions, 10152 events. 1758/10152 cut-off events. For 3009/3879 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 113090 event pairs, 725 based on Foata normal form. 15/9094 useless extension candidates. Maximal degree in co-relation 13696. Up to 1923 conditions per place. [2022-11-18 20:13:22,855 INFO L137 encePairwiseOnDemand]: 93/101 looper letters, 23 selfloop transitions, 7 changer transitions 0/103 dead transitions. [2022-11-18 20:13:22,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 103 transitions, 351 flow [2022-11-18 20:13:22,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:13:22,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:13:22,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2022-11-18 20:13:22,858 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8151815181518152 [2022-11-18 20:13:22,858 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 247 transitions. [2022-11-18 20:13:22,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 247 transitions. [2022-11-18 20:13:22,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:13:22,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 247 transitions. [2022-11-18 20:13:22,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:22,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:22,862 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:22,862 INFO L175 Difference]: Start difference. First operand has 101 places, 92 transitions, 254 flow. Second operand 3 states and 247 transitions. [2022-11-18 20:13:22,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 103 transitions, 351 flow [2022-11-18 20:13:22,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 103 transitions, 349 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:13:22,872 INFO L231 Difference]: Finished difference. Result has 104 places, 98 transitions, 306 flow [2022-11-18 20:13:22,873 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=306, PETRI_PLACES=104, PETRI_TRANSITIONS=98} [2022-11-18 20:13:22,873 INFO L288 CegarLoopForPetriNet]: 104 programPoint places, 0 predicate places. [2022-11-18 20:13:22,874 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 98 transitions, 306 flow [2022-11-18 20:13:22,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:22,874 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:13:22,875 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:22,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:13:23,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:13:23,083 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-11-18 20:13:23,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:23,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1571631562, now seen corresponding path program 1 times [2022-11-18 20:13:23,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:23,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141423047] [2022-11-18 20:13:23,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:23,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:23,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:23,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:23,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:13:23,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141423047] [2022-11-18 20:13:23,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141423047] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:13:23,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206213363] [2022-11-18 20:13:23,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:23,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:13:23,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:13:23,150 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:13:23,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 20:13:23,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:23,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:13:23,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:13:23,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:23,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:13:23,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:23,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206213363] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:13:23,376 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:13:23,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 20:13:23,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284936426] [2022-11-18 20:13:23,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:13:23,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:13:23,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:13:23,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:13:23,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:13:23,380 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 101 [2022-11-18 20:13:23,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 98 transitions, 306 flow. Second operand has 10 states, 10 states have (on average 69.5) internal successors, (695), 10 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:23,381 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:13:23,382 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 101 [2022-11-18 20:13:23,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:13:25,434 INFO L130 PetriNetUnfolder]: 2504/10876 cut-off events. [2022-11-18 20:13:25,434 INFO L131 PetriNetUnfolder]: For 5603/5939 co-relation queries the response was YES. [2022-11-18 20:13:25,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18520 conditions, 10876 events. 2504/10876 cut-off events. For 5603/5939 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 115076 event pairs, 585 based on Foata normal form. 6/9977 useless extension candidates. Maximal degree in co-relation 18509. Up to 2631 conditions per place. [2022-11-18 20:13:25,547 INFO L137 encePairwiseOnDemand]: 95/101 looper letters, 45 selfloop transitions, 9 changer transitions 0/122 dead transitions. [2022-11-18 20:13:25,548 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 122 transitions, 492 flow [2022-11-18 20:13:25,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:13:25,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:13:25,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 654 transitions. [2022-11-18 20:13:25,552 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7194719471947195 [2022-11-18 20:13:25,552 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 654 transitions. [2022-11-18 20:13:25,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 654 transitions. [2022-11-18 20:13:25,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:13:25,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 654 transitions. [2022-11-18 20:13:25,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 72.66666666666667) internal successors, (654), 9 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:25,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 101.0) internal successors, (1010), 10 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:25,561 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 101.0) internal successors, (1010), 10 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:25,561 INFO L175 Difference]: Start difference. First operand has 104 places, 98 transitions, 306 flow. Second operand 9 states and 654 transitions. [2022-11-18 20:13:25,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 122 transitions, 492 flow [2022-11-18 20:13:25,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 122 transitions, 478 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:13:25,575 INFO L231 Difference]: Finished difference. Result has 113 places, 104 transitions, 342 flow [2022-11-18 20:13:25,576 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=342, PETRI_PLACES=113, PETRI_TRANSITIONS=104} [2022-11-18 20:13:25,576 INFO L288 CegarLoopForPetriNet]: 104 programPoint places, 9 predicate places. [2022-11-18 20:13:25,577 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 104 transitions, 342 flow [2022-11-18 20:13:25,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 69.5) internal successors, (695), 10 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:25,578 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:13:25,583 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 20:13:25,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:13:25,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:13:25,792 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-11-18 20:13:25,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:25,793 INFO L85 PathProgramCache]: Analyzing trace with hash -747920851, now seen corresponding path program 1 times [2022-11-18 20:13:25,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:25,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380890303] [2022-11-18 20:13:25,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:25,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:25,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:26,035 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:26,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:13:26,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380890303] [2022-11-18 20:13:26,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380890303] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:13:26,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070538523] [2022-11-18 20:13:26,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:26,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:13:26,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:13:26,039 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:13:26,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 20:13:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:26,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:13:26,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:13:26,292 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:26,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:13:26,503 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:26,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070538523] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:13:26,504 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:13:26,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-18 20:13:26,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765189242] [2022-11-18 20:13:26,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:13:26,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:13:26,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:13:26,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:13:26,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:13:26,509 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 101 [2022-11-18 20:13:26,512 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 104 transitions, 342 flow. Second operand has 18 states, 18 states have (on average 69.72222222222223) internal successors, (1255), 18 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:26,512 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:13:26,512 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 101 [2022-11-18 20:13:26,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:13:27,212 INFO L130 PetriNetUnfolder]: 743/1481 cut-off events. [2022-11-18 20:13:27,212 INFO L131 PetriNetUnfolder]: For 1554/1554 co-relation queries the response was YES. [2022-11-18 20:13:27,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4138 conditions, 1481 events. 743/1481 cut-off events. For 1554/1554 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 8134 event pairs, 0 based on Foata normal form. 56/1537 useless extension candidates. Maximal degree in co-relation 4125. Up to 775 conditions per place. [2022-11-18 20:13:27,227 INFO L137 encePairwiseOnDemand]: 96/101 looper letters, 69 selfloop transitions, 16 changer transitions 0/127 dead transitions. [2022-11-18 20:13:27,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 127 transitions, 641 flow [2022-11-18 20:13:27,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:13:27,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 20:13:27,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1294 transitions. [2022-11-18 20:13:27,233 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7117711771177118 [2022-11-18 20:13:27,234 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1294 transitions. [2022-11-18 20:13:27,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1294 transitions. [2022-11-18 20:13:27,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:13:27,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1294 transitions. [2022-11-18 20:13:27,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 71.88888888888889) internal successors, (1294), 18 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:27,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 101.0) internal successors, (1919), 19 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:27,245 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 101.0) internal successors, (1919), 19 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:27,246 INFO L175 Difference]: Start difference. First operand has 113 places, 104 transitions, 342 flow. Second operand 18 states and 1294 transitions. [2022-11-18 20:13:27,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 127 transitions, 641 flow [2022-11-18 20:13:27,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 127 transitions, 600 flow, removed 14 selfloop flow, removed 4 redundant places. [2022-11-18 20:13:27,253 INFO L231 Difference]: Finished difference. Result has 99 places, 73 transitions, 254 flow [2022-11-18 20:13:27,253 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=254, PETRI_PLACES=99, PETRI_TRANSITIONS=73} [2022-11-18 20:13:27,254 INFO L288 CegarLoopForPetriNet]: 104 programPoint places, -5 predicate places. [2022-11-18 20:13:27,254 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 73 transitions, 254 flow [2022-11-18 20:13:27,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 69.72222222222223) internal successors, (1255), 18 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:27,255 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:13:27,256 INFO L209 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:27,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 20:13:27,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-18 20:13:27,463 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-11-18 20:13:27,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:27,464 INFO L85 PathProgramCache]: Analyzing trace with hash -567303917, now seen corresponding path program 1 times [2022-11-18 20:13:27,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:27,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666837230] [2022-11-18 20:13:27,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:27,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:13:27,489 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:13:27,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:13:27,516 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:13:27,516 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:13:27,517 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-18 20:13:27,517 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2022-11-18 20:13:27,517 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2022-11-18 20:13:27,518 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2022-11-18 20:13:27,518 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2022-11-18 20:13:27,518 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2022-11-18 20:13:27,518 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2022-11-18 20:13:27,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2022-11-18 20:13:27,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2022-11-18 20:13:27,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2022-11-18 20:13:27,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-18 20:13:27,520 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-18 20:13:27,521 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:13:27,521 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2022-11-18 20:13:27,557 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2022-11-18 20:13:27,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 109 transitions, 296 flow [2022-11-18 20:13:27,821 INFO L130 PetriNetUnfolder]: 213/1660 cut-off events. [2022-11-18 20:13:27,821 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2022-11-18 20:13:27,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1892 conditions, 1660 events. 213/1660 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9914 event pairs, 72 based on Foata normal form. 0/1433 useless extension candidates. Maximal degree in co-relation 981. Up to 192 conditions per place. [2022-11-18 20:13:27,827 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 109 transitions, 296 flow [2022-11-18 20:13:27,835 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 109 transitions, 296 flow [2022-11-18 20:13:27,836 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:13:27,837 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;@5330ff29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:13:27,837 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-18 20:13:27,839 INFO L130 PetriNetUnfolder]: 0/18 cut-off events. [2022-11-18 20:13:27,840 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:13:27,840 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:13:27,840 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:27,841 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-11-18 20:13:27,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:27,841 INFO L85 PathProgramCache]: Analyzing trace with hash 303748177, now seen corresponding path program 1 times [2022-11-18 20:13:27,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:27,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330075817] [2022-11-18 20:13:27,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:27,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:27,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:27,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:27,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:13:27,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330075817] [2022-11-18 20:13:27,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330075817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:13:27,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:13:27,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:13:27,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097261175] [2022-11-18 20:13:27,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:13:27,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:13:27,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:13:27,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:13:27,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:13:27,862 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 109 [2022-11-18 20:13:27,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 109 transitions, 296 flow. Second operand has 2 states, 2 states have (on average 79.5) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:27,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:13:27,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 109 [2022-11-18 20:13:27,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:13:30,105 INFO L130 PetriNetUnfolder]: 2323/11021 cut-off events. [2022-11-18 20:13:30,105 INFO L131 PetriNetUnfolder]: For 5791/11129 co-relation queries the response was YES. [2022-11-18 20:13:30,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15986 conditions, 11021 events. 2323/11021 cut-off events. For 5791/11129 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 120518 event pairs, 2016 based on Foata normal form. 651/10198 useless extension candidates. Maximal degree in co-relation 9663. Up to 3110 conditions per place. [2022-11-18 20:13:30,196 INFO L137 encePairwiseOnDemand]: 99/109 looper letters, 19 selfloop transitions, 0 changer transitions 0/98 dead transitions. [2022-11-18 20:13:30,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 98 transitions, 312 flow [2022-11-18 20:13:30,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:13:30,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 20:13:30,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 187 transitions. [2022-11-18 20:13:30,198 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8577981651376146 [2022-11-18 20:13:30,199 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 187 transitions. [2022-11-18 20:13:30,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 187 transitions. [2022-11-18 20:13:30,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:13:30,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 187 transitions. [2022-11-18 20:13:30,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 93.5) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:30,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:30,202 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:30,202 INFO L175 Difference]: Start difference. First operand has 113 places, 109 transitions, 296 flow. Second operand 2 states and 187 transitions. [2022-11-18 20:13:30,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 98 transitions, 312 flow [2022-11-18 20:13:30,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 98 transitions, 312 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:13:30,209 INFO L231 Difference]: Finished difference. Result has 106 places, 98 transitions, 274 flow [2022-11-18 20:13:30,210 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=274, PETRI_PLACES=106, PETRI_TRANSITIONS=98} [2022-11-18 20:13:30,210 INFO L288 CegarLoopForPetriNet]: 113 programPoint places, -7 predicate places. [2022-11-18 20:13:30,211 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 98 transitions, 274 flow [2022-11-18 20:13:30,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 79.5) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:30,211 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:13:30,212 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:30,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-18 20:13:30,212 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-11-18 20:13:30,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:30,213 INFO L85 PathProgramCache]: Analyzing trace with hash 641724639, now seen corresponding path program 1 times [2022-11-18 20:13:30,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:30,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514737675] [2022-11-18 20:13:30,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:30,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:30,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:30,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:30,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:13:30,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514737675] [2022-11-18 20:13:30,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514737675] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:13:30,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:13:30,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:13:30,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300836240] [2022-11-18 20:13:30,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:13:30,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:13:30,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:13:30,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:13:30,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:13:30,267 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 109 [2022-11-18 20:13:30,268 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 98 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:30,268 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:13:30,269 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 109 [2022-11-18 20:13:30,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:13:32,800 INFO L130 PetriNetUnfolder]: 4032/15068 cut-off events. [2022-11-18 20:13:32,801 INFO L131 PetriNetUnfolder]: For 5972/6332 co-relation queries the response was YES. [2022-11-18 20:13:32,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22611 conditions, 15068 events. 4032/15068 cut-off events. For 5972/6332 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 155844 event pairs, 3034 based on Foata normal form. 0/13470 useless extension candidates. Maximal degree in co-relation 22602. Up to 5417 conditions per place. [2022-11-18 20:13:32,953 INFO L137 encePairwiseOnDemand]: 106/109 looper letters, 29 selfloop transitions, 2 changer transitions 0/103 dead transitions. [2022-11-18 20:13:32,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 103 transitions, 346 flow [2022-11-18 20:13:32,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:13:32,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:13:32,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2022-11-18 20:13:32,956 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7584097859327217 [2022-11-18 20:13:32,956 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2022-11-18 20:13:32,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2022-11-18 20:13:32,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:13:32,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2022-11-18 20:13:32,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:32,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:32,959 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:32,959 INFO L175 Difference]: Start difference. First operand has 106 places, 98 transitions, 274 flow. Second operand 3 states and 248 transitions. [2022-11-18 20:13:32,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 103 transitions, 346 flow [2022-11-18 20:13:32,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 103 transitions, 346 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:13:32,965 INFO L231 Difference]: Finished difference. Result has 109 places, 99 transitions, 286 flow [2022-11-18 20:13:32,966 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=286, PETRI_PLACES=109, PETRI_TRANSITIONS=99} [2022-11-18 20:13:32,967 INFO L288 CegarLoopForPetriNet]: 113 programPoint places, -4 predicate places. [2022-11-18 20:13:32,967 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 99 transitions, 286 flow [2022-11-18 20:13:32,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:32,967 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:13:32,968 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:32,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-18 20:13:32,968 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-11-18 20:13:32,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:32,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1744791682, now seen corresponding path program 1 times [2022-11-18 20:13:32,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:32,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670907107] [2022-11-18 20:13:32,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:32,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:33,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:33,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:13:33,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670907107] [2022-11-18 20:13:33,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670907107] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:13:33,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322293982] [2022-11-18 20:13:33,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:33,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:13:33,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:13:33,043 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:13:33,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 20:13:33,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:33,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:13:33,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:13:33,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:13:33,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:13:33,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322293982] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:13:33,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:13:33,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-18 20:13:33,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180079008] [2022-11-18 20:13:33,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:13:33,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:13:33,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:13:33,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:13:33,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:13:33,204 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 109 [2022-11-18 20:13:33,205 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 99 transitions, 286 flow. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:33,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:13:33,205 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 109 [2022-11-18 20:13:33,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:13:38,056 INFO L130 PetriNetUnfolder]: 5989/30471 cut-off events. [2022-11-18 20:13:38,056 INFO L131 PetriNetUnfolder]: For 10616/13463 co-relation queries the response was YES. [2022-11-18 20:13:38,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41927 conditions, 30471 events. 5989/30471 cut-off events. For 10616/13463 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 400261 event pairs, 2688 based on Foata normal form. 21/27397 useless extension candidates. Maximal degree in co-relation 41916. Up to 6167 conditions per place. [2022-11-18 20:13:38,360 INFO L137 encePairwiseOnDemand]: 100/109 looper letters, 27 selfloop transitions, 8 changer transitions 0/112 dead transitions. [2022-11-18 20:13:38,360 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 112 transitions, 400 flow [2022-11-18 20:13:38,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:13:38,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:13:38,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2022-11-18 20:13:38,363 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8073394495412844 [2022-11-18 20:13:38,363 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 264 transitions. [2022-11-18 20:13:38,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 264 transitions. [2022-11-18 20:13:38,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:13:38,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 264 transitions. [2022-11-18 20:13:38,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:38,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:38,367 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:38,367 INFO L175 Difference]: Start difference. First operand has 109 places, 99 transitions, 286 flow. Second operand 3 states and 264 transitions. [2022-11-18 20:13:38,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 112 transitions, 400 flow [2022-11-18 20:13:38,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 112 transitions, 398 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:13:38,379 INFO L231 Difference]: Finished difference. Result has 112 places, 106 transitions, 346 flow [2022-11-18 20:13:38,379 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=346, PETRI_PLACES=112, PETRI_TRANSITIONS=106} [2022-11-18 20:13:38,380 INFO L288 CegarLoopForPetriNet]: 113 programPoint places, -1 predicate places. [2022-11-18 20:13:38,380 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 106 transitions, 346 flow [2022-11-18 20:13:38,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:38,381 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:13:38,381 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:38,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 20:13:38,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-18 20:13:38,588 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-11-18 20:13:38,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:38,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1397716646, now seen corresponding path program 1 times [2022-11-18 20:13:38,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:38,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938631452] [2022-11-18 20:13:38,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:38,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:38,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:38,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:38,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:13:38,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938631452] [2022-11-18 20:13:38,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938631452] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:13:38,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968073194] [2022-11-18 20:13:38,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:38,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:13:38,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:13:38,671 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:13:38,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 20:13:38,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:38,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:13:38,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:13:38,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:38,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:13:38,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:38,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968073194] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:13:38,935 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:13:38,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 20:13:38,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985918877] [2022-11-18 20:13:38,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:13:38,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:13:38,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:13:38,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:13:38,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:13:38,940 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 109 [2022-11-18 20:13:38,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 106 transitions, 346 flow. Second operand has 10 states, 10 states have (on average 73.5) internal successors, (735), 10 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:38,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:13:38,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 109 [2022-11-18 20:13:38,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:13:44,257 INFO L130 PetriNetUnfolder]: 7887/31423 cut-off events. [2022-11-18 20:13:44,257 INFO L131 PetriNetUnfolder]: For 18614/19672 co-relation queries the response was YES. [2022-11-18 20:13:44,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54362 conditions, 31423 events. 7887/31423 cut-off events. For 18614/19672 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 384250 event pairs, 2142 based on Foata normal form. 6/28635 useless extension candidates. Maximal degree in co-relation 54350. Up to 8409 conditions per place. [2022-11-18 20:13:44,755 INFO L137 encePairwiseOnDemand]: 103/109 looper letters, 50 selfloop transitions, 9 changer transitions 0/131 dead transitions. [2022-11-18 20:13:44,756 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 131 transitions, 546 flow [2022-11-18 20:13:44,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:13:44,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:13:44,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 694 transitions. [2022-11-18 20:13:44,758 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7074413863404689 [2022-11-18 20:13:44,758 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 694 transitions. [2022-11-18 20:13:44,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 694 transitions. [2022-11-18 20:13:44,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:13:44,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 694 transitions. [2022-11-18 20:13:44,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.11111111111111) internal successors, (694), 9 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:44,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 109.0) internal successors, (1090), 10 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:44,762 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 109.0) internal successors, (1090), 10 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:44,762 INFO L175 Difference]: Start difference. First operand has 112 places, 106 transitions, 346 flow. Second operand 9 states and 694 transitions. [2022-11-18 20:13:44,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 131 transitions, 546 flow [2022-11-18 20:13:44,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 131 transitions, 530 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:13:44,776 INFO L231 Difference]: Finished difference. Result has 121 places, 112 transitions, 380 flow [2022-11-18 20:13:44,777 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=380, PETRI_PLACES=121, PETRI_TRANSITIONS=112} [2022-11-18 20:13:44,777 INFO L288 CegarLoopForPetriNet]: 113 programPoint places, 8 predicate places. [2022-11-18 20:13:44,777 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 112 transitions, 380 flow [2022-11-18 20:13:44,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 73.5) internal successors, (735), 10 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:44,778 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:13:44,778 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 20:13:44,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 20:13:44,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:13:44,984 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-11-18 20:13:44,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:44,984 INFO L85 PathProgramCache]: Analyzing trace with hash 163452763, now seen corresponding path program 1 times [2022-11-18 20:13:44,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:44,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020891150] [2022-11-18 20:13:44,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:44,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:45,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:45,143 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:45,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:13:45,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020891150] [2022-11-18 20:13:45,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020891150] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:13:45,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134655050] [2022-11-18 20:13:45,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:45,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:13:45,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:13:45,146 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:13:45,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 20:13:45,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:45,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:13:45,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:13:45,396 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:45,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:13:45,571 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:45,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134655050] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:13:45,572 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:13:45,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-18 20:13:45,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717192690] [2022-11-18 20:13:45,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:13:45,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:13:45,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:13:45,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:13:45,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:13:45,578 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 109 [2022-11-18 20:13:45,579 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 112 transitions, 380 flow. Second operand has 18 states, 18 states have (on average 73.72222222222223) internal successors, (1327), 18 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:45,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:13:45,580 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 109 [2022-11-18 20:13:45,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:13:46,474 INFO L130 PetriNetUnfolder]: 1863/3337 cut-off events. [2022-11-18 20:13:46,474 INFO L131 PetriNetUnfolder]: For 4066/4066 co-relation queries the response was YES. [2022-11-18 20:13:46,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9547 conditions, 3337 events. 1863/3337 cut-off events. For 4066/4066 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 19689 event pairs, 0 based on Foata normal form. 120/3457 useless extension candidates. Maximal degree in co-relation 9533. Up to 1927 conditions per place. [2022-11-18 20:13:46,510 INFO L137 encePairwiseOnDemand]: 104/109 looper letters, 91 selfloop transitions, 19 changer transitions 0/156 dead transitions. [2022-11-18 20:13:46,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 156 transitions, 816 flow [2022-11-18 20:13:46,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:13:46,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 20:13:46,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1605 transitions. [2022-11-18 20:13:46,515 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7011795543905636 [2022-11-18 20:13:46,515 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1605 transitions. [2022-11-18 20:13:46,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1605 transitions. [2022-11-18 20:13:46,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:13:46,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1605 transitions. [2022-11-18 20:13:46,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 76.42857142857143) internal successors, (1605), 21 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:46,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 109.0) internal successors, (2398), 22 states have internal predecessors, (2398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:46,526 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 109.0) internal successors, (2398), 22 states have internal predecessors, (2398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:46,526 INFO L175 Difference]: Start difference. First operand has 121 places, 112 transitions, 380 flow. Second operand 21 states and 1605 transitions. [2022-11-18 20:13:46,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 156 transitions, 816 flow [2022-11-18 20:13:46,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 156 transitions, 761 flow, removed 20 selfloop flow, removed 4 redundant places. [2022-11-18 20:13:46,540 INFO L231 Difference]: Finished difference. Result has 110 places, 82 transitions, 292 flow [2022-11-18 20:13:46,540 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=292, PETRI_PLACES=110, PETRI_TRANSITIONS=82} [2022-11-18 20:13:46,541 INFO L288 CegarLoopForPetriNet]: 113 programPoint places, -3 predicate places. [2022-11-18 20:13:46,542 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 82 transitions, 292 flow [2022-11-18 20:13:46,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 73.72222222222223) internal successors, (1327), 18 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:46,543 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:13:46,543 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:46,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 20:13:46,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:13:46,750 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-11-18 20:13:46,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:46,750 INFO L85 PathProgramCache]: Analyzing trace with hash -83408276, now seen corresponding path program 1 times [2022-11-18 20:13:46,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:46,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408240799] [2022-11-18 20:13:46,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:46,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:46,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:13:46,794 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:13:46,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:13:46,834 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:13:46,835 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:13:46,835 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-11-18 20:13:46,837 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2022-11-18 20:13:46,837 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2022-11-18 20:13:46,838 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2022-11-18 20:13:46,838 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2022-11-18 20:13:46,838 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2022-11-18 20:13:46,839 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2022-11-18 20:13:46,839 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2022-11-18 20:13:46,839 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2022-11-18 20:13:46,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2022-11-18 20:13:46,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2022-11-18 20:13:46,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-18 20:13:46,840 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-18 20:13:46,845 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:13:46,846 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2022-11-18 20:13:46,896 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2022-11-18 20:13:46,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 117 transitions, 332 flow [2022-11-18 20:13:47,660 INFO L130 PetriNetUnfolder]: 472/3222 cut-off events. [2022-11-18 20:13:47,661 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2022-11-18 20:13:47,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3720 conditions, 3222 events. 472/3222 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 23708 event pairs, 201 based on Foata normal form. 0/2798 useless extension candidates. Maximal degree in co-relation 1878. Up to 448 conditions per place. [2022-11-18 20:13:47,669 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 117 transitions, 332 flow [2022-11-18 20:13:47,678 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 117 transitions, 332 flow [2022-11-18 20:13:47,679 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:13:47,679 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;@5330ff29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:13:47,679 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-18 20:13:47,681 INFO L130 PetriNetUnfolder]: 0/18 cut-off events. [2022-11-18 20:13:47,682 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:13:47,682 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:13:47,682 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:47,683 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2022-11-18 20:13:47,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:47,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1720163034, now seen corresponding path program 1 times [2022-11-18 20:13:47,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:47,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253013870] [2022-11-18 20:13:47,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:47,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:47,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:47,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:47,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:13:47,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253013870] [2022-11-18 20:13:47,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253013870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:13:47,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:13:47,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:13:47,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588447376] [2022-11-18 20:13:47,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:13:47,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:13:47,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:13:47,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:13:47,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:13:47,703 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 117 [2022-11-18 20:13:47,704 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 117 transitions, 332 flow. Second operand has 2 states, 2 states have (on average 83.5) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:47,704 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:13:47,704 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 117 [2022-11-18 20:13:47,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:13:53,549 INFO L130 PetriNetUnfolder]: 8348/34020 cut-off events. [2022-11-18 20:13:53,549 INFO L131 PetriNetUnfolder]: For 18390/37874 co-relation queries the response was YES. [2022-11-18 20:13:53,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50690 conditions, 34020 events. 8348/34020 cut-off events. For 18390/37874 co-relation queries the response was YES. Maximal size of possible extension queue 800. Compared 437513 event pairs, 7375 based on Foata normal form. 1909/31368 useless extension candidates. Maximal degree in co-relation 31373. Up to 10656 conditions per place. [2022-11-18 20:13:53,868 INFO L137 encePairwiseOnDemand]: 106/117 looper letters, 22 selfloop transitions, 0 changer transitions 0/105 dead transitions. [2022-11-18 20:13:53,869 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 105 transitions, 352 flow [2022-11-18 20:13:53,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:13:53,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 20:13:53,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 199 transitions. [2022-11-18 20:13:53,870 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8504273504273504 [2022-11-18 20:13:53,870 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 199 transitions. [2022-11-18 20:13:53,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 199 transitions. [2022-11-18 20:13:53,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:13:53,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 199 transitions. [2022-11-18 20:13:53,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 99.5) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:53,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:53,873 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:53,873 INFO L175 Difference]: Start difference. First operand has 122 places, 117 transitions, 332 flow. Second operand 2 states and 199 transitions. [2022-11-18 20:13:53,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 105 transitions, 352 flow [2022-11-18 20:13:53,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 105 transitions, 352 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:13:53,920 INFO L231 Difference]: Finished difference. Result has 114 places, 105 transitions, 308 flow [2022-11-18 20:13:53,920 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=308, PETRI_PLACES=114, PETRI_TRANSITIONS=105} [2022-11-18 20:13:53,920 INFO L288 CegarLoopForPetriNet]: 122 programPoint places, -8 predicate places. [2022-11-18 20:13:53,921 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 105 transitions, 308 flow [2022-11-18 20:13:53,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 83.5) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:53,921 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:13:53,921 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:53,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-18 20:13:53,921 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2022-11-18 20:13:53,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:53,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1337588620, now seen corresponding path program 1 times [2022-11-18 20:13:53,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:53,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673655399] [2022-11-18 20:13:53,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:53,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:53,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:53,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:53,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:13:53,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673655399] [2022-11-18 20:13:53,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673655399] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:13:53,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:13:53,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:13:53,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40509292] [2022-11-18 20:13:53,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:13:53,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:13:53,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:13:53,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:13:53,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:13:53,959 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 117 [2022-11-18 20:13:53,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 105 transitions, 308 flow. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:53,959 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:13:53,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 117 [2022-11-18 20:13:53,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:14:02,120 INFO L130 PetriNetUnfolder]: 12440/42897 cut-off events. [2022-11-18 20:14:02,121 INFO L131 PetriNetUnfolder]: For 20368/21457 co-relation queries the response was YES. [2022-11-18 20:14:02,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65504 conditions, 42897 events. 12440/42897 cut-off events. For 20368/21457 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 514722 event pairs, 9795 based on Foata normal form. 0/38063 useless extension candidates. Maximal degree in co-relation 65494. Up to 15955 conditions per place. [2022-11-18 20:14:02,516 INFO L137 encePairwiseOnDemand]: 114/117 looper letters, 32 selfloop transitions, 2 changer transitions 0/110 dead transitions. [2022-11-18 20:14:02,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 110 transitions, 386 flow [2022-11-18 20:14:02,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:14:02,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:14:02,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 263 transitions. [2022-11-18 20:14:02,519 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7492877492877493 [2022-11-18 20:14:02,519 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 263 transitions. [2022-11-18 20:14:02,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 263 transitions. [2022-11-18 20:14:02,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:14:02,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 263 transitions. [2022-11-18 20:14:02,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:02,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:02,529 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:02,529 INFO L175 Difference]: Start difference. First operand has 114 places, 105 transitions, 308 flow. Second operand 3 states and 263 transitions. [2022-11-18 20:14:02,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 110 transitions, 386 flow [2022-11-18 20:14:02,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 110 transitions, 386 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:14:02,537 INFO L231 Difference]: Finished difference. Result has 117 places, 106 transitions, 320 flow [2022-11-18 20:14:02,538 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=320, PETRI_PLACES=117, PETRI_TRANSITIONS=106} [2022-11-18 20:14:02,549 INFO L288 CegarLoopForPetriNet]: 122 programPoint places, -5 predicate places. [2022-11-18 20:14:02,549 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 106 transitions, 320 flow [2022-11-18 20:14:02,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:02,550 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:14:02,550 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:02,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-18 20:14:02,551 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2022-11-18 20:14:02,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:02,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1664542467, now seen corresponding path program 1 times [2022-11-18 20:14:02,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:02,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610166217] [2022-11-18 20:14:02,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:02,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:02,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:02,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:14:02,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:02,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610166217] [2022-11-18 20:14:02,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610166217] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:14:02,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618705241] [2022-11-18 20:14:02,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:02,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:14:02,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:14:02,615 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:14:02,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 20:14:02,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:02,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:14:02,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:14:02,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:14:02,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:14:02,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618705241] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:14:02,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:14:02,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-18 20:14:02,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245230736] [2022-11-18 20:14:02,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:14:02,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:14:02,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:02,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:14:02,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:14:02,769 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 117 [2022-11-18 20:14:02,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 106 transitions, 320 flow. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:02,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:14:02,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 117 [2022-11-18 20:14:02,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:14:18,480 INFO L130 PetriNetUnfolder]: 20001/91985 cut-off events. [2022-11-18 20:14:18,481 INFO L131 PetriNetUnfolder]: For 34625/43329 co-relation queries the response was YES. [2022-11-18 20:14:19,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128940 conditions, 91985 events. 20001/91985 cut-off events. For 34625/43329 co-relation queries the response was YES. Maximal size of possible extension queue 1829. Compared 1392799 event pairs, 9630 based on Foata normal form. 28/82820 useless extension candidates. Maximal degree in co-relation 128928. Up to 19640 conditions per place. [2022-11-18 20:14:19,363 INFO L137 encePairwiseOnDemand]: 107/117 looper letters, 31 selfloop transitions, 9 changer transitions 0/121 dead transitions. [2022-11-18 20:14:19,363 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 121 transitions, 451 flow [2022-11-18 20:14:19,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:14:19,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:14:19,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 281 transitions. [2022-11-18 20:14:19,365 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8005698005698005 [2022-11-18 20:14:19,365 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 281 transitions. [2022-11-18 20:14:19,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 281 transitions. [2022-11-18 20:14:19,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:14:19,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 281 transitions. [2022-11-18 20:14:19,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:19,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:19,368 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:19,368 INFO L175 Difference]: Start difference. First operand has 117 places, 106 transitions, 320 flow. Second operand 3 states and 281 transitions. [2022-11-18 20:14:19,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 121 transitions, 451 flow [2022-11-18 20:14:19,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 121 transitions, 449 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:14:19,419 INFO L231 Difference]: Finished difference. Result has 120 places, 114 transitions, 388 flow [2022-11-18 20:14:19,419 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=388, PETRI_PLACES=120, PETRI_TRANSITIONS=114} [2022-11-18 20:14:19,421 INFO L288 CegarLoopForPetriNet]: 122 programPoint places, -2 predicate places. [2022-11-18 20:14:19,421 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 114 transitions, 388 flow [2022-11-18 20:14:19,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:19,422 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:14:19,422 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:19,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 20:14:19,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:14:19,628 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2022-11-18 20:14:19,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:19,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1310076984, now seen corresponding path program 1 times [2022-11-18 20:14:19,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:19,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489149558] [2022-11-18 20:14:19,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:19,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:19,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:14:19,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:19,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489149558] [2022-11-18 20:14:19,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489149558] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:14:19,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135641601] [2022-11-18 20:14:19,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:19,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:14:19,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:14:19,715 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:14:19,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c4bc87-4531-41c7-b519-e812a4b838b0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 20:14:19,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:19,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:14:19,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:14:19,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:14:19,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:14:19,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:14:19,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135641601] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:14:19,966 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:14:19,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 20:14:19,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176865053] [2022-11-18 20:14:19,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:14:19,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:14:19,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:19,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:14:19,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:14:19,969 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 117 [2022-11-18 20:14:19,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 114 transitions, 388 flow. Second operand has 10 states, 10 states have (on average 77.5) internal successors, (775), 10 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:19,972 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:14:19,972 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 117 [2022-11-18 20:14:19,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand