./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-deagle/reorder_c11_bad-40.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18df6cc2-8cec-4a5e-8cb5-c7afdc938495/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18df6cc2-8cec-4a5e-8cb5-c7afdc938495/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_18df6cc2-8cec-4a5e-8cb5-c7afdc938495/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18df6cc2-8cec-4a5e-8cb5-c7afdc938495/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-deagle/reorder_c11_bad-40.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18df6cc2-8cec-4a5e-8cb5-c7afdc938495/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_18df6cc2-8cec-4a5e-8cb5-c7afdc938495/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 b6d5da741db538e8728209fa456d0dc9c63ceba5521dacbaf062bafc94e3da01 --- 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 20:24:40,328 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:24:40,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:24:40,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:24:40,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:24:40,366 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:24:40,368 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:24:40,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:24:40,376 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:24:40,383 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:24:40,384 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:24:40,385 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:24:40,385 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:24:40,386 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:24:40,387 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:24:40,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:24:40,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:24:40,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:24:40,394 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:24:40,396 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:24:40,397 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:24:40,400 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:24:40,401 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:24:40,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:24:40,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:24:40,406 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:24:40,406 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:24:40,407 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:24:40,408 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:24:40,409 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:24:40,409 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:24:40,415 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:24:40,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:24:40,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:24:40,421 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:24:40,421 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:24:40,422 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:24:40,422 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:24:40,422 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:24:40,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:24:40,424 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:24:40,431 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18df6cc2-8cec-4a5e-8cb5-c7afdc938495/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-18 20:24:40,485 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:24:40,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:24:40,486 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:24:40,486 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:24:40,487 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:24:40,487 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:24:40,487 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:24:40,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:24:40,488 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:24:40,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:24:40,489 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:24:40,490 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:24:40,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:24:40,490 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:24:40,490 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:24:40,490 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:24:40,490 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:24:40,491 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:24:40,491 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-18 20:24:40,491 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:24:40,491 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:24:40,491 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:24:40,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:24:40,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:24:40,492 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:24:40,492 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:24:40,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:24:40,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:24:40,493 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:24:40,493 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:24:40,493 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:24:40,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:24:40,494 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:24:40,494 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:24:40,494 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:24:40,494 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_18df6cc2-8cec-4a5e-8cb5-c7afdc938495/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18df6cc2-8cec-4a5e-8cb5-c7afdc938495/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6d5da741db538e8728209fa456d0dc9c63ceba5521dacbaf062bafc94e3da01 [2022-11-18 20:24:40,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:24:40,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:24:40,800 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:24:40,801 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:24:40,802 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:24:40,804 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18df6cc2-8cec-4a5e-8cb5-c7afdc938495/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread-deagle/reorder_c11_bad-40.i [2022-11-18 20:24:40,900 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18df6cc2-8cec-4a5e-8cb5-c7afdc938495/bin/uautomizer-TMbwUNV5ro/data/ea22c504e/9872c49447e24954a077be61e81d4180/FLAG579d5770d [2022-11-18 20:24:41,466 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:24:41,472 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18df6cc2-8cec-4a5e-8cb5-c7afdc938495/sv-benchmarks/c/pthread-deagle/reorder_c11_bad-40.i [2022-11-18 20:24:41,488 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18df6cc2-8cec-4a5e-8cb5-c7afdc938495/bin/uautomizer-TMbwUNV5ro/data/ea22c504e/9872c49447e24954a077be61e81d4180/FLAG579d5770d [2022-11-18 20:24:41,774 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18df6cc2-8cec-4a5e-8cb5-c7afdc938495/bin/uautomizer-TMbwUNV5ro/data/ea22c504e/9872c49447e24954a077be61e81d4180 [2022-11-18 20:24:41,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:24:41,779 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:24:41,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:24:41,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:24:41,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:24:41,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:24:41" (1/1) ... [2022-11-18 20:24:41,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7616e6b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:41, skipping insertion in model container [2022-11-18 20:24:41,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:24:41" (1/1) ... [2022-11-18 20:24:41,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:24:41,852 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:24:42,246 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_18df6cc2-8cec-4a5e-8cb5-c7afdc938495/sv-benchmarks/c/pthread-deagle/reorder_c11_bad-40.i[30190,30203] [2022-11-18 20:24:42,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:24:42,298 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:24:42,362 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_18df6cc2-8cec-4a5e-8cb5-c7afdc938495/sv-benchmarks/c/pthread-deagle/reorder_c11_bad-40.i[30190,30203] [2022-11-18 20:24:42,373 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:24:42,413 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:24:42,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:42 WrapperNode [2022-11-18 20:24:42,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:24:42,415 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:24:42,415 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:24:42,415 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:24:42,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:42" (1/1) ... [2022-11-18 20:24:42,456 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:42" (1/1) ... [2022-11-18 20:24:42,504 INFO L138 Inliner]: procedures = 163, calls = 21, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 137 [2022-11-18 20:24:42,504 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:24:42,505 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:24:42,505 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:24:42,505 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:24:42,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:42" (1/1) ... [2022-11-18 20:24:42,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:42" (1/1) ... [2022-11-18 20:24:42,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:42" (1/1) ... [2022-11-18 20:24:42,536 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:42" (1/1) ... [2022-11-18 20:24:42,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:42" (1/1) ... [2022-11-18 20:24:42,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:42" (1/1) ... [2022-11-18 20:24:42,562 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:42" (1/1) ... [2022-11-18 20:24:42,566 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:42" (1/1) ... [2022-11-18 20:24:42,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:24:42,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:24:42,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:24:42,582 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:24:42,583 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:42" (1/1) ... [2022-11-18 20:24:42,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:24:42,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18df6cc2-8cec-4a5e-8cb5-c7afdc938495/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:24:42,616 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18df6cc2-8cec-4a5e-8cb5-c7afdc938495/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:24:42,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18df6cc2-8cec-4a5e-8cb5-c7afdc938495/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:24:42,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:24:42,655 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2022-11-18 20:24:42,655 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2022-11-18 20:24:42,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:24:42,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 20:24:42,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:24:42,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:24:42,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:24:42,656 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2022-11-18 20:24:42,656 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2022-11-18 20:24:42,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:24:42,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 20:24:42,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:24:42,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:24:42,659 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 20:24:42,876 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:24:42,878 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:24:43,386 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:24:43,428 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:24:43,428 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-18 20:24:43,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:24:43 BoogieIcfgContainer [2022-11-18 20:24:43,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:24:43,433 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:24:43,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:24:43,437 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:24:43,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:24:41" (1/3) ... [2022-11-18 20:24:43,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7248e8e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:24:43, skipping insertion in model container [2022-11-18 20:24:43,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:42" (2/3) ... [2022-11-18 20:24:43,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7248e8e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:24:43, skipping insertion in model container [2022-11-18 20:24:43,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:24:43" (3/3) ... [2022-11-18 20:24:43,440 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_c11_bad-40.i [2022-11-18 20:24:43,449 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:24:43,459 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:24:43,460 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2022-11-18 20:24:43,460 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:24:43,589 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-18 20:24:43,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 210 transitions, 442 flow [2022-11-18 20:24:43,842 INFO L130 PetriNetUnfolder]: 30/521 cut-off events. [2022-11-18 20:24:43,842 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-18 20:24:43,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 541 conditions, 521 events. 30/521 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2110 event pairs, 0 based on Foata normal form. 0/410 useless extension candidates. Maximal degree in co-relation 247. Up to 8 conditions per place. [2022-11-18 20:24:43,852 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 210 transitions, 442 flow [2022-11-18 20:24:43,859 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 210 transitions, 442 flow [2022-11-18 20:24:43,869 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:24:43,881 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;@6ecc4238, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:24:43,882 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2022-11-18 20:24:43,893 INFO L130 PetriNetUnfolder]: 0/24 cut-off events. [2022-11-18 20:24:43,894 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:24:43,894 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:43,895 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] [2022-11-18 20:24:43,896 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-11-18 20:24:43,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:43,902 INFO L85 PathProgramCache]: Analyzing trace with hash 534724535, now seen corresponding path program 1 times [2022-11-18 20:24:43,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:43,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610544236] [2022-11-18 20:24:43,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:43,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:44,189 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 20:24:44,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:44,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610544236] [2022-11-18 20:24:44,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610544236] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:44,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:44,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:24:44,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27686745] [2022-11-18 20:24:44,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:44,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:24:44,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:44,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:24:44,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:24:44,249 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 210 [2022-11-18 20:24:44,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 210 transitions, 442 flow. Second operand has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:44,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:44,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 210 [2022-11-18 20:24:44,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:44,704 INFO L130 PetriNetUnfolder]: 192/1120 cut-off events. [2022-11-18 20:24:44,704 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2022-11-18 20:24:44,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1675 conditions, 1120 events. 192/1120 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 6233 event pairs, 168 based on Foata normal form. 114/1048 useless extension candidates. Maximal degree in co-relation 1286. Up to 521 conditions per place. [2022-11-18 20:24:44,722 INFO L137 encePairwiseOnDemand]: 200/210 looper letters, 68 selfloop transitions, 2 changer transitions 0/201 dead transitions. [2022-11-18 20:24:44,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 201 transitions, 564 flow [2022-11-18 20:24:44,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:24:44,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:24:44,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 471 transitions. [2022-11-18 20:24:44,749 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7476190476190476 [2022-11-18 20:24:44,750 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 471 transitions. [2022-11-18 20:24:44,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 471 transitions. [2022-11-18 20:24:44,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:44,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 471 transitions. [2022-11-18 20:24:44,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:44,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:44,773 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:44,775 INFO L175 Difference]: Start difference. First operand has 203 places, 210 transitions, 442 flow. Second operand 3 states and 471 transitions. [2022-11-18 20:24:44,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 201 transitions, 564 flow [2022-11-18 20:24:44,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 201 transitions, 564 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:24:44,808 INFO L231 Difference]: Finished difference. Result has 201 places, 201 transitions, 428 flow [2022-11-18 20:24:44,812 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=428, PETRI_PLACES=201, PETRI_TRANSITIONS=201} [2022-11-18 20:24:44,817 INFO L288 CegarLoopForPetriNet]: 203 programPoint places, -2 predicate places. [2022-11-18 20:24:44,818 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 201 transitions, 428 flow [2022-11-18 20:24:44,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:44,818 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:44,819 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] [2022-11-18 20:24:44,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:24:44,820 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-11-18 20:24:44,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:44,822 INFO L85 PathProgramCache]: Analyzing trace with hash -54656402, now seen corresponding path program 1 times [2022-11-18 20:24:44,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:44,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252099] [2022-11-18 20:24:44,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:44,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:44,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:44,951 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 20:24:44,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:44,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252099] [2022-11-18 20:24:44,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252099] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:44,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:44,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:24:44,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178640868] [2022-11-18 20:24:44,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:44,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:24:44,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:44,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:24:44,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:24:44,956 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 210 [2022-11-18 20:24:44,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 201 transitions, 428 flow. Second operand has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:44,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:44,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 210 [2022-11-18 20:24:44,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:45,266 INFO L130 PetriNetUnfolder]: 156/1011 cut-off events. [2022-11-18 20:24:45,266 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2022-11-18 20:24:45,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1457 conditions, 1011 events. 156/1011 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 5521 event pairs, 78 based on Foata normal form. 0/898 useless extension candidates. Maximal degree in co-relation 1422. Up to 243 conditions per place. [2022-11-18 20:24:45,277 INFO L137 encePairwiseOnDemand]: 187/210 looper letters, 46 selfloop transitions, 11 changer transitions 0/191 dead transitions. [2022-11-18 20:24:45,277 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 191 transitions, 522 flow [2022-11-18 20:24:45,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:24:45,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:24:45,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 471 transitions. [2022-11-18 20:24:45,279 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7476190476190476 [2022-11-18 20:24:45,279 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 471 transitions. [2022-11-18 20:24:45,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 471 transitions. [2022-11-18 20:24:45,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:45,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 471 transitions. [2022-11-18 20:24:45,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:45,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:45,284 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:45,284 INFO L175 Difference]: Start difference. First operand has 201 places, 201 transitions, 428 flow. Second operand 3 states and 471 transitions. [2022-11-18 20:24:45,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 191 transitions, 522 flow [2022-11-18 20:24:45,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 191 transitions, 518 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:24:45,292 INFO L231 Difference]: Finished difference. Result has 189 places, 189 transitions, 422 flow [2022-11-18 20:24:45,293 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=422, PETRI_PLACES=189, PETRI_TRANSITIONS=189} [2022-11-18 20:24:45,294 INFO L288 CegarLoopForPetriNet]: 203 programPoint places, -14 predicate places. [2022-11-18 20:24:45,294 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 189 transitions, 422 flow [2022-11-18 20:24:45,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:45,295 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:45,295 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 20:24:45,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:24:45,296 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-11-18 20:24:45,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:45,297 INFO L85 PathProgramCache]: Analyzing trace with hash -2045341073, now seen corresponding path program 1 times [2022-11-18 20:24:45,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:45,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904600908] [2022-11-18 20:24:45,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:45,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:45,393 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 20:24:45,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:45,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904600908] [2022-11-18 20:24:45,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904600908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:45,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:45,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:24:45,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674578173] [2022-11-18 20:24:45,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:45,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:24:45,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:45,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:24:45,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:24:45,397 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 210 [2022-11-18 20:24:45,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 189 transitions, 422 flow. Second operand has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:45,398 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:45,398 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 210 [2022-11-18 20:24:45,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:45,639 INFO L130 PetriNetUnfolder]: 99/707 cut-off events. [2022-11-18 20:24:45,639 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-18 20:24:45,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1064 conditions, 707 events. 99/707 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2625 event pairs, 52 based on Foata normal form. 0/632 useless extension candidates. Maximal degree in co-relation 819. Up to 160 conditions per place. [2022-11-18 20:24:45,645 INFO L137 encePairwiseOnDemand]: 198/210 looper letters, 61 selfloop transitions, 8 changer transitions 9/215 dead transitions. [2022-11-18 20:24:45,645 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 215 transitions, 622 flow [2022-11-18 20:24:45,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:24:45,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:24:45,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 546 transitions. [2022-11-18 20:24:45,648 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2022-11-18 20:24:45,648 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 546 transitions. [2022-11-18 20:24:45,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 546 transitions. [2022-11-18 20:24:45,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:45,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 546 transitions. [2022-11-18 20:24:45,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:45,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:45,653 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:45,653 INFO L175 Difference]: Start difference. First operand has 189 places, 189 transitions, 422 flow. Second operand 3 states and 546 transitions. [2022-11-18 20:24:45,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 215 transitions, 622 flow [2022-11-18 20:24:45,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 215 transitions, 600 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:24:45,660 INFO L231 Difference]: Finished difference. Result has 190 places, 182 transitions, 418 flow [2022-11-18 20:24:45,660 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=418, PETRI_PLACES=190, PETRI_TRANSITIONS=182} [2022-11-18 20:24:45,661 INFO L288 CegarLoopForPetriNet]: 203 programPoint places, -13 predicate places. [2022-11-18 20:24:45,661 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 182 transitions, 418 flow [2022-11-18 20:24:45,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:45,662 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:45,662 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:24:45,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:24:45,663 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-11-18 20:24:45,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:45,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1824961802, now seen corresponding path program 1 times [2022-11-18 20:24:45,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:45,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351981730] [2022-11-18 20:24:45,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:45,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:45,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:45,717 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 20:24:45,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:45,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351981730] [2022-11-18 20:24:45,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351981730] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:45,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:45,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:24:45,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210189622] [2022-11-18 20:24:45,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:45,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:24:45,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:45,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:24:45,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:24:45,721 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 210 [2022-11-18 20:24:45,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 182 transitions, 418 flow. Second operand has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:45,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:45,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 210 [2022-11-18 20:24:45,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:45,952 INFO L130 PetriNetUnfolder]: 113/714 cut-off events. [2022-11-18 20:24:45,953 INFO L131 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2022-11-18 20:24:45,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1099 conditions, 714 events. 113/714 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2644 event pairs, 99 based on Foata normal form. 0/656 useless extension candidates. Maximal degree in co-relation 869. Up to 302 conditions per place. [2022-11-18 20:24:45,959 INFO L137 encePairwiseOnDemand]: 207/210 looper letters, 57 selfloop transitions, 2 changer transitions 0/183 dead transitions. [2022-11-18 20:24:45,959 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 183 transitions, 538 flow [2022-11-18 20:24:45,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:24:45,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:24:45,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 453 transitions. [2022-11-18 20:24:45,961 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.719047619047619 [2022-11-18 20:24:45,961 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 453 transitions. [2022-11-18 20:24:45,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 453 transitions. [2022-11-18 20:24:45,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:45,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 453 transitions. [2022-11-18 20:24:45,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:45,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:45,970 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:45,970 INFO L175 Difference]: Start difference. First operand has 190 places, 182 transitions, 418 flow. Second operand 3 states and 453 transitions. [2022-11-18 20:24:45,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 183 transitions, 538 flow [2022-11-18 20:24:45,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 183 transitions, 530 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:24:45,979 INFO L231 Difference]: Finished difference. Result has 182 places, 181 transitions, 412 flow [2022-11-18 20:24:45,979 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=412, PETRI_PLACES=182, PETRI_TRANSITIONS=181} [2022-11-18 20:24:45,986 INFO L288 CegarLoopForPetriNet]: 203 programPoint places, -21 predicate places. [2022-11-18 20:24:45,986 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 181 transitions, 412 flow [2022-11-18 20:24:45,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:45,987 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:45,987 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:24:45,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:24:45,988 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-11-18 20:24:45,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:45,989 INFO L85 PathProgramCache]: Analyzing trace with hash -474470198, now seen corresponding path program 1 times [2022-11-18 20:24:45,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:45,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371328981] [2022-11-18 20:24:45,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:45,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:46,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:46,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:46,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:46,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371328981] [2022-11-18 20:24:46,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371328981] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:24:46,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625958459] [2022-11-18 20:24:46,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:46,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:24:46,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18df6cc2-8cec-4a5e-8cb5-c7afdc938495/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:24:46,150 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18df6cc2-8cec-4a5e-8cb5-c7afdc938495/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:24:46,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18df6cc2-8cec-4a5e-8cb5-c7afdc938495/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:24:46,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:46,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:24:46,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:24:46,309 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:24:46,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:24:46,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625958459] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:46,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:24:46,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-18 20:24:46,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742507282] [2022-11-18 20:24:46,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:46,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:24:46,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:46,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:24:46,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:24:46,313 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 210 [2022-11-18 20:24:46,314 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 181 transitions, 412 flow. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:46,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:46,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 210 [2022-11-18 20:24:46,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:46,516 INFO L130 PetriNetUnfolder]: 111/709 cut-off events. [2022-11-18 20:24:46,516 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2022-11-18 20:24:46,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1084 conditions, 709 events. 111/709 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2622 event pairs, 97 based on Foata normal form. 0/654 useless extension candidates. Maximal degree in co-relation 856. Up to 297 conditions per place. [2022-11-18 20:24:46,522 INFO L137 encePairwiseOnDemand]: 207/210 looper letters, 56 selfloop transitions, 2 changer transitions 0/182 dead transitions. [2022-11-18 20:24:46,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 182 transitions, 530 flow [2022-11-18 20:24:46,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:24:46,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:24:46,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 452 transitions. [2022-11-18 20:24:46,525 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7174603174603175 [2022-11-18 20:24:46,525 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 452 transitions. [2022-11-18 20:24:46,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 452 transitions. [2022-11-18 20:24:46,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:46,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 452 transitions. [2022-11-18 20:24:46,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:46,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:46,529 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:46,529 INFO L175 Difference]: Start difference. First operand has 182 places, 181 transitions, 412 flow. Second operand 3 states and 452 transitions. [2022-11-18 20:24:46,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 182 transitions, 530 flow [2022-11-18 20:24:46,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 182 transitions, 526 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:24:46,533 INFO L231 Difference]: Finished difference. Result has 181 places, 180 transitions, 410 flow [2022-11-18 20:24:46,534 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=410, PETRI_PLACES=181, PETRI_TRANSITIONS=180} [2022-11-18 20:24:46,534 INFO L288 CegarLoopForPetriNet]: 203 programPoint places, -22 predicate places. [2022-11-18 20:24:46,535 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 180 transitions, 410 flow [2022-11-18 20:24:46,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:46,535 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:46,535 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:24:46,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18df6cc2-8cec-4a5e-8cb5-c7afdc938495/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:24:46,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18df6cc2-8cec-4a5e-8cb5-c7afdc938495/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:24:46,742 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-11-18 20:24:46,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:46,742 INFO L85 PathProgramCache]: Analyzing trace with hash -252428761, now seen corresponding path program 1 times [2022-11-18 20:24:46,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:46,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964793244] [2022-11-18 20:24:46,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:46,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:46,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:24:46,760 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:24:46,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:24:46,798 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:24:46,798 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:24:46,799 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 36 remaining) [2022-11-18 20:24:46,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr0ASSERT_VIOLATIONDATA_RACE (34 of 36 remaining) [2022-11-18 20:24:46,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr1ASSERT_VIOLATIONDATA_RACE (33 of 36 remaining) [2022-11-18 20:24:46,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONDATA_RACE (32 of 36 remaining) [2022-11-18 20:24:46,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr1ASSERT_VIOLATIONDATA_RACE (31 of 36 remaining) [2022-11-18 20:24:46,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr2ASSERT_VIOLATIONDATA_RACE (30 of 36 remaining) [2022-11-18 20:24:46,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr3ASSERT_VIOLATIONDATA_RACE (29 of 36 remaining) [2022-11-18 20:24:46,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (28 of 36 remaining) [2022-11-18 20:24:46,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (27 of 36 remaining) [2022-11-18 20:24:46,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (26 of 36 remaining) [2022-11-18 20:24:46,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (25 of 36 remaining) [2022-11-18 20:24:46,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (24 of 36 remaining) [2022-11-18 20:24:46,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (23 of 36 remaining) [2022-11-18 20:24:46,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (22 of 36 remaining) [2022-11-18 20:24:46,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (21 of 36 remaining) [2022-11-18 20:24:46,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (20 of 36 remaining) [2022-11-18 20:24:46,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE (19 of 36 remaining) [2022-11-18 20:24:46,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONDATA_RACE (18 of 36 remaining) [2022-11-18 20:24:46,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (17 of 36 remaining) [2022-11-18 20:24:46,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (16 of 36 remaining) [2022-11-18 20:24:46,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONDATA_RACE (15 of 36 remaining) [2022-11-18 20:24:46,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONDATA_RACE (14 of 36 remaining) [2022-11-18 20:24:46,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONDATA_RACE (13 of 36 remaining) [2022-11-18 20:24:46,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (12 of 36 remaining) [2022-11-18 20:24:46,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONDATA_RACE (11 of 36 remaining) [2022-11-18 20:24:46,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONDATA_RACE (10 of 36 remaining) [2022-11-18 20:24:46,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONDATA_RACE (9 of 36 remaining) [2022-11-18 20:24:46,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONDATA_RACE (8 of 36 remaining) [2022-11-18 20:24:46,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONDATA_RACE (7 of 36 remaining) [2022-11-18 20:24:46,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 36 remaining) [2022-11-18 20:24:46,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr0ASSERT_VIOLATIONDATA_RACE (5 of 36 remaining) [2022-11-18 20:24:46,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr1ASSERT_VIOLATIONDATA_RACE (4 of 36 remaining) [2022-11-18 20:24:46,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONDATA_RACE (3 of 36 remaining) [2022-11-18 20:24:46,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr1ASSERT_VIOLATIONDATA_RACE (2 of 36 remaining) [2022-11-18 20:24:46,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr2ASSERT_VIOLATIONDATA_RACE (1 of 36 remaining) [2022-11-18 20:24:46,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr3ASSERT_VIOLATIONDATA_RACE (0 of 36 remaining) [2022-11-18 20:24:46,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:24:46,816 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-18 20:24:46,818 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:24:46,823 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 20:24:46,893 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-18 20:24:46,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 249 places, 260 transitions, 568 flow [2022-11-18 20:24:47,195 INFO L130 PetriNetUnfolder]: 125/1739 cut-off events. [2022-11-18 20:24:47,195 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-11-18 20:24:47,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1836 conditions, 1739 events. 125/1739 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 10322 event pairs, 2 based on Foata normal form. 0/1374 useless extension candidates. Maximal degree in co-relation 980. Up to 32 conditions per place. [2022-11-18 20:24:47,218 INFO L82 GeneralOperation]: Start removeDead. Operand has 249 places, 260 transitions, 568 flow [2022-11-18 20:24:47,235 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 249 places, 260 transitions, 568 flow [2022-11-18 20:24:47,241 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:24:47,247 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;@6ecc4238, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:24:47,248 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2022-11-18 20:24:47,250 INFO L130 PetriNetUnfolder]: 0/24 cut-off events. [2022-11-18 20:24:47,250 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:24:47,250 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:47,250 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] [2022-11-18 20:24:47,251 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-11-18 20:24:47,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:47,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1775485511, now seen corresponding path program 1 times [2022-11-18 20:24:47,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:47,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422591147] [2022-11-18 20:24:47,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:47,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:47,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:47,301 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 20:24:47,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:47,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422591147] [2022-11-18 20:24:47,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422591147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:47,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:47,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:24:47,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581311098] [2022-11-18 20:24:47,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:47,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:24:47,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:47,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:24:47,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:24:47,305 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 260 [2022-11-18 20:24:47,305 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 260 transitions, 568 flow. Second operand has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:47,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:47,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 260 [2022-11-18 20:24:47,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:49,937 INFO L130 PetriNetUnfolder]: 2687/8550 cut-off events. [2022-11-18 20:24:49,937 INFO L131 PetriNetUnfolder]: For 648/684 co-relation queries the response was YES. [2022-11-18 20:24:50,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13897 conditions, 8550 events. 2687/8550 cut-off events. For 648/684 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 68398 event pairs, 2481 based on Foata normal form. 2081/9444 useless extension candidates. Maximal degree in co-relation 7299. Up to 5052 conditions per place. [2022-11-18 20:24:50,214 INFO L137 encePairwiseOnDemand]: 247/260 looper letters, 76 selfloop transitions, 2 changer transitions 0/247 dead transitions. [2022-11-18 20:24:50,215 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 247 transitions, 698 flow [2022-11-18 20:24:50,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:24:50,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:24:50,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 596 transitions. [2022-11-18 20:24:50,218 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.764102564102564 [2022-11-18 20:24:50,218 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 596 transitions. [2022-11-18 20:24:50,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 596 transitions. [2022-11-18 20:24:50,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:50,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 596 transitions. [2022-11-18 20:24:50,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:50,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:50,224 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:50,224 INFO L175 Difference]: Start difference. First operand has 249 places, 260 transitions, 568 flow. Second operand 3 states and 596 transitions. [2022-11-18 20:24:50,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 247 transitions, 698 flow [2022-11-18 20:24:50,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 247 transitions, 698 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:24:50,231 INFO L231 Difference]: Finished difference. Result has 244 places, 247 transitions, 546 flow [2022-11-18 20:24:50,232 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=546, PETRI_PLACES=244, PETRI_TRANSITIONS=247} [2022-11-18 20:24:50,233 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, -5 predicate places. [2022-11-18 20:24:50,233 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 247 transitions, 546 flow [2022-11-18 20:24:50,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:50,234 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:50,234 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] [2022-11-18 20:24:50,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:24:50,235 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-11-18 20:24:50,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:50,235 INFO L85 PathProgramCache]: Analyzing trace with hash -965929490, now seen corresponding path program 1 times [2022-11-18 20:24:50,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:50,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290984777] [2022-11-18 20:24:50,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:50,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:50,264 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 20:24:50,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:50,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290984777] [2022-11-18 20:24:50,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290984777] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:50,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:50,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:24:50,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958804687] [2022-11-18 20:24:50,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:50,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:24:50,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:50,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:24:50,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:24:50,268 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 260 [2022-11-18 20:24:50,269 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 247 transitions, 546 flow. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:50,269 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:50,270 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 260 [2022-11-18 20:24:50,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:52,212 INFO L130 PetriNetUnfolder]: 2173/7264 cut-off events. [2022-11-18 20:24:52,212 INFO L131 PetriNetUnfolder]: For 649/685 co-relation queries the response was YES. [2022-11-18 20:24:52,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11565 conditions, 7264 events. 2173/7264 cut-off events. For 649/685 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 56953 event pairs, 1169 based on Foata normal form. 0/6585 useless extension candidates. Maximal degree in co-relation 11528. Up to 2412 conditions per place. [2022-11-18 20:24:52,376 INFO L137 encePairwiseOnDemand]: 237/260 looper letters, 56 selfloop transitions, 11 changer transitions 0/239 dead transitions. [2022-11-18 20:24:52,377 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 239 transitions, 664 flow [2022-11-18 20:24:52,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:24:52,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:24:52,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2022-11-18 20:24:52,380 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7628205128205128 [2022-11-18 20:24:52,381 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 595 transitions. [2022-11-18 20:24:52,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 595 transitions. [2022-11-18 20:24:52,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:52,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 595 transitions. [2022-11-18 20:24:52,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.33333333333334) internal successors, (595), 3 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:52,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:52,391 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:52,391 INFO L175 Difference]: Start difference. First operand has 244 places, 247 transitions, 546 flow. Second operand 3 states and 595 transitions. [2022-11-18 20:24:52,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 239 transitions, 664 flow [2022-11-18 20:24:52,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 239 transitions, 660 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:24:52,400 INFO L231 Difference]: Finished difference. Result has 232 places, 235 transitions, 540 flow [2022-11-18 20:24:52,401 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=540, PETRI_PLACES=232, PETRI_TRANSITIONS=235} [2022-11-18 20:24:52,402 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, -17 predicate places. [2022-11-18 20:24:52,403 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 235 transitions, 540 flow [2022-11-18 20:24:52,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:52,403 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:52,404 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 20:24:52,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:24:52,404 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-11-18 20:24:52,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:52,406 INFO L85 PathProgramCache]: Analyzing trace with hash -957051023, now seen corresponding path program 1 times [2022-11-18 20:24:52,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:52,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650029749] [2022-11-18 20:24:52,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:52,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:52,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:52,492 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 20:24:52,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:52,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650029749] [2022-11-18 20:24:52,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650029749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:52,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:52,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:24:52,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469898691] [2022-11-18 20:24:52,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:52,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:24:52,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:52,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:24:52,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:24:52,498 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 260 [2022-11-18 20:24:52,499 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 235 transitions, 540 flow. Second operand has 3 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:52,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:52,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 260 [2022-11-18 20:24:52,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:54,541 INFO L130 PetriNetUnfolder]: 2174/7894 cut-off events. [2022-11-18 20:24:54,541 INFO L131 PetriNetUnfolder]: For 258/258 co-relation queries the response was YES. [2022-11-18 20:24:54,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12828 conditions, 7894 events. 2174/7894 cut-off events. For 258/258 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 63130 event pairs, 994 based on Foata normal form. 0/7194 useless extension candidates. Maximal degree in co-relation 5478. Up to 2249 conditions per place. [2022-11-18 20:24:54,652 INFO L137 encePairwiseOnDemand]: 248/260 looper letters, 85 selfloop transitions, 8 changer transitions 0/275 dead transitions. [2022-11-18 20:24:54,652 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 275 transitions, 830 flow [2022-11-18 20:24:54,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:24:54,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:24:54,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 682 transitions. [2022-11-18 20:24:54,655 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8743589743589744 [2022-11-18 20:24:54,655 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 682 transitions. [2022-11-18 20:24:54,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 682 transitions. [2022-11-18 20:24:54,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:54,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 682 transitions. [2022-11-18 20:24:54,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:54,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:54,659 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:54,660 INFO L175 Difference]: Start difference. First operand has 232 places, 235 transitions, 540 flow. Second operand 3 states and 682 transitions. [2022-11-18 20:24:54,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 275 transitions, 830 flow [2022-11-18 20:24:54,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 275 transitions, 808 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:24:54,667 INFO L231 Difference]: Finished difference. Result has 233 places, 239 transitions, 566 flow [2022-11-18 20:24:54,668 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=566, PETRI_PLACES=233, PETRI_TRANSITIONS=239} [2022-11-18 20:24:54,668 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, -16 predicate places. [2022-11-18 20:24:54,668 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 239 transitions, 566 flow [2022-11-18 20:24:54,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:54,669 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:54,669 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:24:54,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:24:54,669 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-11-18 20:24:54,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:54,670 INFO L85 PathProgramCache]: Analyzing trace with hash 26835934, now seen corresponding path program 1 times [2022-11-18 20:24:54,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:54,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027090206] [2022-11-18 20:24:54,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:54,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:54,708 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 20:24:54,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:54,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027090206] [2022-11-18 20:24:54,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027090206] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:54,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:54,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:24:54,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70933576] [2022-11-18 20:24:54,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:54,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:24:54,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:54,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:24:54,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:24:54,711 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 260 [2022-11-18 20:24:54,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 239 transitions, 566 flow. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:54,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:54,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 260 [2022-11-18 20:24:54,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:56,658 INFO L130 PetriNetUnfolder]: 2124/7842 cut-off events. [2022-11-18 20:24:56,658 INFO L131 PetriNetUnfolder]: For 740/740 co-relation queries the response was YES. [2022-11-18 20:24:56,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12608 conditions, 7842 events. 2124/7842 cut-off events. For 740/740 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 63138 event pairs, 1928 based on Foata normal form. 0/7271 useless extension candidates. Maximal degree in co-relation 5609. Up to 3941 conditions per place. [2022-11-18 20:24:56,936 INFO L137 encePairwiseOnDemand]: 257/260 looper letters, 67 selfloop transitions, 2 changer transitions 0/242 dead transitions. [2022-11-18 20:24:56,936 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 242 transitions, 710 flow [2022-11-18 20:24:56,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:24:56,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:24:56,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 577 transitions. [2022-11-18 20:24:56,939 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7397435897435898 [2022-11-18 20:24:56,939 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 577 transitions. [2022-11-18 20:24:56,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 577 transitions. [2022-11-18 20:24:56,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:56,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 577 transitions. [2022-11-18 20:24:56,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:56,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:56,945 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:56,945 INFO L175 Difference]: Start difference. First operand has 233 places, 239 transitions, 566 flow. Second operand 3 states and 577 transitions. [2022-11-18 20:24:56,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 242 transitions, 710 flow [2022-11-18 20:24:56,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 242 transitions, 702 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:24:56,953 INFO L231 Difference]: Finished difference. Result has 233 places, 238 transitions, 560 flow [2022-11-18 20:24:56,954 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=560, PETRI_PLACES=233, PETRI_TRANSITIONS=238} [2022-11-18 20:24:56,955 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, -16 predicate places. [2022-11-18 20:24:56,955 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 238 transitions, 560 flow [2022-11-18 20:24:56,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:56,956 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:56,957 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:24:56,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:24:56,957 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-11-18 20:24:56,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:56,958 INFO L85 PathProgramCache]: Analyzing trace with hash -363605896, now seen corresponding path program 1 times [2022-11-18 20:24:56,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:56,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558202573] [2022-11-18 20:24:56,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:56,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:57,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:57,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:57,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558202573] [2022-11-18 20:24:57,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558202573] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:24:57,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864690879] [2022-11-18 20:24:57,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:57,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:24:57,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18df6cc2-8cec-4a5e-8cb5-c7afdc938495/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:24:57,112 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18df6cc2-8cec-4a5e-8cb5-c7afdc938495/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:24:57,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18df6cc2-8cec-4a5e-8cb5-c7afdc938495/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:24:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:57,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:24:57,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:24:57,256 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:24:57,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:24:57,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864690879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:57,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:24:57,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-18 20:24:57,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635114573] [2022-11-18 20:24:57,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:57,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:24:57,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:57,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:24:57,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:24:57,262 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 260 [2022-11-18 20:24:57,263 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 238 transitions, 560 flow. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:57,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:57,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 260 [2022-11-18 20:24:57,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:58,959 INFO L130 PetriNetUnfolder]: 2110/7804 cut-off events. [2022-11-18 20:24:58,963 INFO L131 PetriNetUnfolder]: For 751/751 co-relation queries the response was YES. [2022-11-18 20:24:59,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12469 conditions, 7804 events. 2110/7804 cut-off events. For 751/751 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 62750 event pairs, 1914 based on Foata normal form. 0/7245 useless extension candidates. Maximal degree in co-relation 5521. Up to 3915 conditions per place. [2022-11-18 20:24:59,059 INFO L137 encePairwiseOnDemand]: 257/260 looper letters, 66 selfloop transitions, 2 changer transitions 0/241 dead transitions. [2022-11-18 20:24:59,059 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 241 transitions, 702 flow [2022-11-18 20:24:59,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:24:59,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:24:59,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 576 transitions. [2022-11-18 20:24:59,062 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7384615384615385 [2022-11-18 20:24:59,063 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 576 transitions. [2022-11-18 20:24:59,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 576 transitions. [2022-11-18 20:24:59,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:59,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 576 transitions. [2022-11-18 20:24:59,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:59,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:59,068 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:59,068 INFO L175 Difference]: Start difference. First operand has 233 places, 238 transitions, 560 flow. Second operand 3 states and 576 transitions. [2022-11-18 20:24:59,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 241 transitions, 702 flow [2022-11-18 20:24:59,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 241 transitions, 698 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:24:59,076 INFO L231 Difference]: Finished difference. Result has 232 places, 237 transitions, 558 flow [2022-11-18 20:24:59,077 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=558, PETRI_PLACES=232, PETRI_TRANSITIONS=237} [2022-11-18 20:24:59,078 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, -17 predicate places. [2022-11-18 20:24:59,079 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 237 transitions, 558 flow [2022-11-18 20:24:59,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:59,079 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:59,080 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:24:59,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18df6cc2-8cec-4a5e-8cb5-c7afdc938495/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:24:59,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18df6cc2-8cec-4a5e-8cb5-c7afdc938495/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 20:24:59,286 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting checkThreadErr0ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-11-18 20:24:59,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:59,287 INFO L85 PathProgramCache]: Analyzing trace with hash -723349642, now seen corresponding path program 1 times [2022-11-18 20:24:59,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:59,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606120528] [2022-11-18 20:24:59,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:59,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:59,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:59,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:59,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:59,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606120528] [2022-11-18 20:24:59,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606120528] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:24:59,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560631523] [2022-11-18 20:24:59,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:59,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:24:59,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18df6cc2-8cec-4a5e-8cb5-c7afdc938495/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:24:59,431 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18df6cc2-8cec-4a5e-8cb5-c7afdc938495/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:24:59,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18df6cc2-8cec-4a5e-8cb5-c7afdc938495/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:24:59,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:59,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:24:59,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:24:59,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:24:59,546 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:24:59,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560631523] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:59,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:24:59,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-18 20:24:59,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226068966] [2022-11-18 20:24:59,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:59,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:24:59,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:59,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:24:59,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:24:59,549 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 260 [2022-11-18 20:24:59,550 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 237 transitions, 558 flow. Second operand has 3 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:59,550 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:59,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 260 [2022-11-18 20:24:59,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:25:05,819 INFO L130 PetriNetUnfolder]: 6387/40069 cut-off events. [2022-11-18 20:25:05,820 INFO L131 PetriNetUnfolder]: For 11074/87833 co-relation queries the response was YES. [2022-11-18 20:25:06,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53036 conditions, 40069 events. 6387/40069 cut-off events. For 11074/87833 co-relation queries the response was YES. Maximal size of possible extension queue 937. Compared 570836 event pairs, 1961 based on Foata normal form. 69/33888 useless extension candidates. Maximal degree in co-relation 45284. Up to 4468 conditions per place. [2022-11-18 20:25:06,420 INFO L137 encePairwiseOnDemand]: 246/260 looper letters, 39 selfloop transitions, 10 changer transitions 0/258 dead transitions. [2022-11-18 20:25:06,420 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 258 transitions, 727 flow [2022-11-18 20:25:06,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:25:06,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:25:06,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 713 transitions. [2022-11-18 20:25:06,426 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9141025641025641 [2022-11-18 20:25:06,427 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 713 transitions. [2022-11-18 20:25:06,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 713 transitions. [2022-11-18 20:25:06,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:25:06,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 713 transitions. [2022-11-18 20:25:06,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 237.66666666666666) internal successors, (713), 3 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:06,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:06,440 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:06,440 INFO L175 Difference]: Start difference. First operand has 232 places, 237 transitions, 558 flow. Second operand 3 states and 713 transitions. [2022-11-18 20:25:06,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 258 transitions, 727 flow [2022-11-18 20:25:06,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 258 transitions, 723 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:25:06,483 INFO L231 Difference]: Finished difference. Result has 234 places, 247 transitions, 642 flow [2022-11-18 20:25:06,484 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=642, PETRI_PLACES=234, PETRI_TRANSITIONS=247} [2022-11-18 20:25:06,485 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, -15 predicate places. [2022-11-18 20:25:06,485 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 247 transitions, 642 flow [2022-11-18 20:25:06,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:06,486 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:25:06,486 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:25:06,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18df6cc2-8cec-4a5e-8cb5-c7afdc938495/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:25:06,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18df6cc2-8cec-4a5e-8cb5-c7afdc938495/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 20:25:06,693 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting checkThreadErr0ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-11-18 20:25:06,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:06,693 INFO L85 PathProgramCache]: Analyzing trace with hash 645704468, now seen corresponding path program 1 times [2022-11-18 20:25:06,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:06,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412882704] [2022-11-18 20:25:06,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:06,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:06,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:06,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:25:06,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:06,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412882704] [2022-11-18 20:25:06,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412882704] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:25:06,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645702694] [2022-11-18 20:25:06,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:06,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:25:06,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18df6cc2-8cec-4a5e-8cb5-c7afdc938495/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:25:06,819 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18df6cc2-8cec-4a5e-8cb5-c7afdc938495/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:25:06,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18df6cc2-8cec-4a5e-8cb5-c7afdc938495/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:25:06,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:06,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:25:06,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:25:07,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:25:07,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:25:07,123 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:25:07,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645702694] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:25:07,123 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:25:07,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 20:25:07,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619842361] [2022-11-18 20:25:07,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:25:07,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:25:07,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:07,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:25:07,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:25:07,130 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 260 [2022-11-18 20:25:07,132 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 247 transitions, 642 flow. Second operand has 10 states, 10 states have (on average 195.9) internal successors, (1959), 10 states have internal predecessors, (1959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:07,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:25:07,133 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 260 [2022-11-18 20:25:07,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:25:07,262 INFO L130 PetriNetUnfolder]: 76/339 cut-off events. [2022-11-18 20:25:07,263 INFO L131 PetriNetUnfolder]: For 66/66 co-relation queries the response was YES. [2022-11-18 20:25:07,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 585 conditions, 339 events. 76/339 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1173 event pairs, 0 based on Foata normal form. 12/343 useless extension candidates. Maximal degree in co-relation 576. Up to 63 conditions per place. [2022-11-18 20:25:07,265 INFO L137 encePairwiseOnDemand]: 255/260 looper letters, 32 selfloop transitions, 7 changer transitions 0/83 dead transitions. [2022-11-18 20:25:07,265 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 83 transitions, 284 flow [2022-11-18 20:25:07,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:25:07,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:25:07,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1778 transitions. [2022-11-18 20:25:07,270 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7598290598290598 [2022-11-18 20:25:07,270 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1778 transitions. [2022-11-18 20:25:07,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1778 transitions. [2022-11-18 20:25:07,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:25:07,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1778 transitions. [2022-11-18 20:25:07,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 197.55555555555554) internal successors, (1778), 9 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:07,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 260.0) internal successors, (2600), 10 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:07,282 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 260.0) internal successors, (2600), 10 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:07,282 INFO L175 Difference]: Start difference. First operand has 234 places, 247 transitions, 642 flow. Second operand 9 states and 1778 transitions. [2022-11-18 20:25:07,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 83 transitions, 284 flow [2022-11-18 20:25:07,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 83 transitions, 282 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-18 20:25:07,285 INFO L231 Difference]: Finished difference. Result has 77 places, 61 transitions, 156 flow [2022-11-18 20:25:07,285 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=156, PETRI_PLACES=77, PETRI_TRANSITIONS=61} [2022-11-18 20:25:07,286 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, -172 predicate places. [2022-11-18 20:25:07,286 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 61 transitions, 156 flow [2022-11-18 20:25:07,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 195.9) internal successors, (1959), 10 states have internal predecessors, (1959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:07,289 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:25:07,289 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2022-11-18 20:25:07,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18df6cc2-8cec-4a5e-8cb5-c7afdc938495/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-18 20:25:07,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18df6cc2-8cec-4a5e-8cb5-c7afdc938495/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 20:25:07,495 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-11-18 20:25:07,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:07,496 INFO L85 PathProgramCache]: Analyzing trace with hash 759265801, now seen corresponding path program 1 times [2022-11-18 20:25:07,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:07,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162112067] [2022-11-18 20:25:07,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:07,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:25:07,528 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:25:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:25:07,556 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:25:07,557 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:25:07,557 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (41 of 42 remaining) [2022-11-18 20:25:07,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr0ASSERT_VIOLATIONDATA_RACE (40 of 42 remaining) [2022-11-18 20:25:07,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr1ASSERT_VIOLATIONDATA_RACE (39 of 42 remaining) [2022-11-18 20:25:07,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONDATA_RACE (38 of 42 remaining) [2022-11-18 20:25:07,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr1ASSERT_VIOLATIONDATA_RACE (37 of 42 remaining) [2022-11-18 20:25:07,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr2ASSERT_VIOLATIONDATA_RACE (36 of 42 remaining) [2022-11-18 20:25:07,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr3ASSERT_VIOLATIONDATA_RACE (35 of 42 remaining) [2022-11-18 20:25:07,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (34 of 42 remaining) [2022-11-18 20:25:07,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (33 of 42 remaining) [2022-11-18 20:25:07,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (32 of 42 remaining) [2022-11-18 20:25:07,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (31 of 42 remaining) [2022-11-18 20:25:07,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (30 of 42 remaining) [2022-11-18 20:25:07,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (29 of 42 remaining) [2022-11-18 20:25:07,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (28 of 42 remaining) [2022-11-18 20:25:07,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (27 of 42 remaining) [2022-11-18 20:25:07,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (26 of 42 remaining) [2022-11-18 20:25:07,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE (25 of 42 remaining) [2022-11-18 20:25:07,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONDATA_RACE (24 of 42 remaining) [2022-11-18 20:25:07,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (23 of 42 remaining) [2022-11-18 20:25:07,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (22 of 42 remaining) [2022-11-18 20:25:07,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONDATA_RACE (21 of 42 remaining) [2022-11-18 20:25:07,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONDATA_RACE (20 of 42 remaining) [2022-11-18 20:25:07,561 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONDATA_RACE (19 of 42 remaining) [2022-11-18 20:25:07,561 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (18 of 42 remaining) [2022-11-18 20:25:07,561 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONDATA_RACE (17 of 42 remaining) [2022-11-18 20:25:07,561 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONDATA_RACE (16 of 42 remaining) [2022-11-18 20:25:07,561 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONDATA_RACE (15 of 42 remaining) [2022-11-18 20:25:07,561 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONDATA_RACE (14 of 42 remaining) [2022-11-18 20:25:07,562 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONDATA_RACE (13 of 42 remaining) [2022-11-18 20:25:07,562 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 42 remaining) [2022-11-18 20:25:07,562 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr0ASSERT_VIOLATIONDATA_RACE (11 of 42 remaining) [2022-11-18 20:25:07,564 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr1ASSERT_VIOLATIONDATA_RACE (10 of 42 remaining) [2022-11-18 20:25:07,564 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr0ASSERT_VIOLATIONDATA_RACE (9 of 42 remaining) [2022-11-18 20:25:07,565 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr1ASSERT_VIOLATIONDATA_RACE (8 of 42 remaining) [2022-11-18 20:25:07,565 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONDATA_RACE (7 of 42 remaining) [2022-11-18 20:25:07,565 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr1ASSERT_VIOLATIONDATA_RACE (6 of 42 remaining) [2022-11-18 20:25:07,565 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr2ASSERT_VIOLATIONDATA_RACE (5 of 42 remaining) [2022-11-18 20:25:07,565 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr3ASSERT_VIOLATIONDATA_RACE (4 of 42 remaining) [2022-11-18 20:25:07,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONDATA_RACE (3 of 42 remaining) [2022-11-18 20:25:07,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr1ASSERT_VIOLATIONDATA_RACE (2 of 42 remaining) [2022-11-18 20:25:07,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr2ASSERT_VIOLATIONDATA_RACE (1 of 42 remaining) [2022-11-18 20:25:07,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr3ASSERT_VIOLATIONDATA_RACE (0 of 42 remaining) [2022-11-18 20:25:07,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:25:07,567 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:25:07,568 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:25:07,568 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-18 20:25:07,630 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-11-18 20:25:07,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 295 places, 310 transitions, 698 flow [2022-11-18 20:25:08,961 INFO L130 PetriNetUnfolder]: 532/5843 cut-off events. [2022-11-18 20:25:08,961 INFO L131 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2022-11-18 20:25:09,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6294 conditions, 5843 events. 532/5843 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 47085 event pairs, 64 based on Foata normal form. 0/4654 useless extension candidates. Maximal degree in co-relation 3338. Up to 192 conditions per place. [2022-11-18 20:25:09,031 INFO L82 GeneralOperation]: Start removeDead. Operand has 295 places, 310 transitions, 698 flow [2022-11-18 20:25:09,097 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 295 places, 310 transitions, 698 flow [2022-11-18 20:25:09,098 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:25:09,099 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;@6ecc4238, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:25:09,099 INFO L358 AbstractCegarLoop]: Starting to check reachability of 48 error locations. [2022-11-18 20:25:09,102 INFO L130 PetriNetUnfolder]: 0/24 cut-off events. [2022-11-18 20:25:09,103 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:25:09,103 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:25:09,103 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] [2022-11-18 20:25:09,103 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-11-18 20:25:09,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:09,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1692627181, now seen corresponding path program 1 times [2022-11-18 20:25:09,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:09,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717342686] [2022-11-18 20:25:09,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:09,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:09,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:09,132 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 20:25:09,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:09,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717342686] [2022-11-18 20:25:09,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717342686] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:09,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:25:09,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:25:09,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207757549] [2022-11-18 20:25:09,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:09,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:25:09,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:09,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:25:09,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:25:09,136 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 310 [2022-11-18 20:25:09,138 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 310 transitions, 698 flow. Second operand has 3 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:09,138 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:25:09,138 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 310 [2022-11-18 20:25:09,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:25:26,235 INFO L130 PetriNetUnfolder]: 28496/68376 cut-off events. [2022-11-18 20:25:26,236 INFO L131 PetriNetUnfolder]: For 7595/7967 co-relation queries the response was YES. [2022-11-18 20:25:27,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116502 conditions, 68376 events. 28496/68376 cut-off events. For 7595/7967 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 680315 event pairs, 26638 based on Foata normal form. 24357/84841 useless extension candidates. Maximal degree in co-relation 61368. Up to 45367 conditions per place. [2022-11-18 20:25:27,853 INFO L137 encePairwiseOnDemand]: 294/310 looper letters, 84 selfloop transitions, 2 changer transitions 0/293 dead transitions. [2022-11-18 20:25:27,853 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 293 transitions, 836 flow [2022-11-18 20:25:27,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:25:27,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:25:27,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 721 transitions. [2022-11-18 20:25:27,856 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7752688172043011 [2022-11-18 20:25:27,856 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 721 transitions. [2022-11-18 20:25:27,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 721 transitions. [2022-11-18 20:25:27,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:25:27,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 721 transitions. [2022-11-18 20:25:27,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.33333333333334) internal successors, (721), 3 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:27,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 310.0) internal successors, (1240), 4 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:27,862 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 310.0) internal successors, (1240), 4 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:27,862 INFO L175 Difference]: Start difference. First operand has 295 places, 310 transitions, 698 flow. Second operand 3 states and 721 transitions. [2022-11-18 20:25:27,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 293 transitions, 836 flow [2022-11-18 20:25:27,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 293 transitions, 836 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:25:27,872 INFO L231 Difference]: Finished difference. Result has 287 places, 293 transitions, 668 flow [2022-11-18 20:25:27,873 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=668, PETRI_PLACES=287, PETRI_TRANSITIONS=293} [2022-11-18 20:25:27,874 INFO L288 CegarLoopForPetriNet]: 295 programPoint places, -8 predicate places. [2022-11-18 20:25:27,874 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 293 transitions, 668 flow [2022-11-18 20:25:27,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:27,874 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:25:27,875 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] [2022-11-18 20:25:27,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 20:25:27,875 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-11-18 20:25:27,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:27,875 INFO L85 PathProgramCache]: Analyzing trace with hash 2141278446, now seen corresponding path program 1 times [2022-11-18 20:25:27,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:27,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338043797] [2022-11-18 20:25:27,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:27,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:27,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:27,896 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 20:25:27,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:27,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338043797] [2022-11-18 20:25:27,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338043797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:27,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:25:27,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:25:27,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307264233] [2022-11-18 20:25:27,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:27,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:25:27,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:27,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:25:27,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:25:27,899 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 310 [2022-11-18 20:25:27,900 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 293 transitions, 668 flow. Second operand has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:27,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:25:27,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 310 [2022-11-18 20:25:27,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand