./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 6b4ec56b 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_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:37:03,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:37:03,260 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:37:03,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:37:03,298 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:37:03,303 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:37:03,307 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:37:03,311 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:37:03,314 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:37:03,322 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:37:03,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:37:03,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:37:03,328 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:37:03,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:37:03,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:37:03,340 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:37:03,342 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:37:03,344 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:37:03,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:37:03,356 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:37:03,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:37:03,361 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:37:03,362 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:37:03,364 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:37:03,377 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:37:03,377 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:37:03,378 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:37:03,380 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:37:03,380 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:37:03,382 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:37:03,383 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:37:03,385 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:37:03,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:37:03,388 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:37:03,390 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:37:03,390 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:37:03,391 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:37:03,392 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:37:03,392 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:37:03,394 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:37:03,395 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:37:03,396 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-20 11:37:03,447 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:37:03,448 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:37:03,449 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:37:03,449 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:37:03,450 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:37:03,451 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:37:03,451 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:37:03,452 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:37:03,452 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:37:03,452 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:37:03,454 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:37:03,454 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:37:03,454 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:37:03,455 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:37:03,455 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:37:03,455 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:37:03,456 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:37:03,456 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:37:03,456 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-20 11:37:03,456 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:37:03,457 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:37:03,457 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:37:03,457 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:37:03,458 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:37:03,458 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:37:03,458 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:37:03,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:37:03,459 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:37:03,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:37:03,460 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:37:03,461 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:37:03,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:37:03,461 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:37:03,462 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:37:03,462 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:37:03,462 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_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 [2022-11-20 11:37:03,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:37:03,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:37:03,843 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:37:03,845 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:37:03,845 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:37:03,847 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2022-11-20 11:37:07,771 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:37:08,210 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:37:08,211 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2022-11-20 11:37:08,228 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/data/37835056c/67978d850e7f4f9ba77741e2b8200480/FLAGa6e821dba [2022-11-20 11:37:08,248 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/data/37835056c/67978d850e7f4f9ba77741e2b8200480 [2022-11-20 11:37:08,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:37:08,253 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:37:08,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:37:08,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:37:08,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:37:08,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:37:08" (1/1) ... [2022-11-20 11:37:08,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b369bd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:08, skipping insertion in model container [2022-11-20 11:37:08,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:37:08" (1/1) ... [2022-11-20 11:37:08,274 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:37:08,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:37:09,099 WARN L237 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_362ea289-50cd-49cb-b0a4-19f4153390a5/sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i[41323,41336] [2022-11-20 11:37:09,160 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:37:09,179 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:37:09,220 WARN L237 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_362ea289-50cd-49cb-b0a4-19f4153390a5/sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i[41323,41336] [2022-11-20 11:37:09,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:37:09,311 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:37:09,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:09 WrapperNode [2022-11-20 11:37:09,312 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:37:09,314 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:37:09,314 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:37:09,314 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:37:09,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:09" (1/1) ... [2022-11-20 11:37:09,347 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:09" (1/1) ... [2022-11-20 11:37:09,392 INFO L138 Inliner]: procedures = 271, calls = 41, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 339 [2022-11-20 11:37:09,393 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:37:09,394 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:37:09,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:37:09,394 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:37:09,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:09" (1/1) ... [2022-11-20 11:37:09,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:09" (1/1) ... [2022-11-20 11:37:09,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:09" (1/1) ... [2022-11-20 11:37:09,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:09" (1/1) ... [2022-11-20 11:37:09,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:09" (1/1) ... [2022-11-20 11:37:09,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:09" (1/1) ... [2022-11-20 11:37:09,450 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:09" (1/1) ... [2022-11-20 11:37:09,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:09" (1/1) ... [2022-11-20 11:37:09,457 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:37:09,458 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:37:09,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:37:09,459 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:37:09,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:09" (1/1) ... [2022-11-20 11:37:09,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:37:09,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:37:09,504 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:37:09,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:37:09,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:37:09,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:37:09,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:37:09,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:37:09,570 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 11:37:09,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:37:09,571 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-20 11:37:09,571 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-20 11:37:09,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:37:09,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:37:09,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:37:09,574 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:37:09,879 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:37:09,881 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:37:10,706 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:37:10,719 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:37:10,719 INFO L300 CfgBuilder]: Removed 35 assume(true) statements. [2022-11-20 11:37:10,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:37:10 BoogieIcfgContainer [2022-11-20 11:37:10,723 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:37:10,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:37:10,727 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:37:10,731 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:37:10,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:37:08" (1/3) ... [2022-11-20 11:37:10,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@141f209c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:37:10, skipping insertion in model container [2022-11-20 11:37:10,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:37:09" (2/3) ... [2022-11-20 11:37:10,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@141f209c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:37:10, skipping insertion in model container [2022-11-20 11:37:10,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:37:10" (3/3) ... [2022-11-20 11:37:10,735 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_73-funloop_hard_racefree.i [2022-11-20 11:37:10,747 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:37:10,761 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:37:10,762 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-20 11:37:10,762 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:37:10,946 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-20 11:37:11,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 318 places, 360 transitions, 728 flow [2022-11-20 11:37:11,270 INFO L130 PetriNetUnfolder]: 73/571 cut-off events. [2022-11-20 11:37:11,271 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 11:37:11,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 577 conditions, 571 events. 73/571 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3106 event pairs, 0 based on Foata normal form. 0/468 useless extension candidates. Maximal degree in co-relation 320. Up to 8 conditions per place. [2022-11-20 11:37:11,290 INFO L82 GeneralOperation]: Start removeDead. Operand has 318 places, 360 transitions, 728 flow [2022-11-20 11:37:11,309 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 318 places, 360 transitions, 728 flow [2022-11-20 11:37:11,320 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:37:11,329 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;@71c58d7a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:37:11,330 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-20 11:37:11,360 INFO L130 PetriNetUnfolder]: 17/147 cut-off events. [2022-11-20 11:37:11,360 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:37:11,360 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:37:11,362 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:37:11,363 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-20 11:37:11,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:11,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1520054562, now seen corresponding path program 1 times [2022-11-20 11:37:11,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:37:11,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393131625] [2022-11-20 11:37:11,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:11,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:37:11,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:11,703 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:37:11,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:37:11,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393131625] [2022-11-20 11:37:11,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393131625] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:37:11,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:37:11,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:37:11,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000410331] [2022-11-20 11:37:11,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:37:11,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:37:11,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:37:11,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:37:11,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:37:11,821 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 360 [2022-11-20 11:37:11,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 360 transitions, 728 flow. Second operand has 2 states, 2 states have (on average 318.0) internal successors, (636), 2 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:11,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:37:11,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 360 [2022-11-20 11:37:11,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:37:12,008 INFO L130 PetriNetUnfolder]: 10/503 cut-off events. [2022-11-20 11:37:12,008 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-20 11:37:12,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 512 conditions, 503 events. 10/503 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2395 event pairs, 0 based on Foata normal form. 63/521 useless extension candidates. Maximal degree in co-relation 282. Up to 4 conditions per place. [2022-11-20 11:37:12,020 INFO L137 encePairwiseOnDemand]: 322/360 looper letters, 2 selfloop transitions, 0 changer transitions 0/319 dead transitions. [2022-11-20 11:37:12,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 319 transitions, 650 flow [2022-11-20 11:37:12,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:37:12,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 11:37:12,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 674 transitions. [2022-11-20 11:37:12,048 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2022-11-20 11:37:12,049 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 674 transitions. [2022-11-20 11:37:12,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 674 transitions. [2022-11-20 11:37:12,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:37:12,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 674 transitions. [2022-11-20 11:37:12,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 337.0) internal successors, (674), 2 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:12,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 360.0) internal successors, (1080), 3 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:12,078 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 360.0) internal successors, (1080), 3 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:12,081 INFO L175 Difference]: Start difference. First operand has 318 places, 360 transitions, 728 flow. Second operand 2 states and 674 transitions. [2022-11-20 11:37:12,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 319 transitions, 650 flow [2022-11-20 11:37:12,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 319 transitions, 650 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:37:12,102 INFO L231 Difference]: Finished difference. Result has 316 places, 319 transitions, 646 flow [2022-11-20 11:37:12,105 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=360, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=646, PETRI_PLACES=316, PETRI_TRANSITIONS=319} [2022-11-20 11:37:12,111 INFO L288 CegarLoopForPetriNet]: 318 programPoint places, -2 predicate places. [2022-11-20 11:37:12,111 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 319 transitions, 646 flow [2022-11-20 11:37:12,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 318.0) internal successors, (636), 2 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:12,112 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:37:12,113 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:37:12,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:37:12,114 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-20 11:37:12,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:12,117 INFO L85 PathProgramCache]: Analyzing trace with hash 675582691, now seen corresponding path program 1 times [2022-11-20 11:37:12,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:37:12,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513335887] [2022-11-20 11:37:12,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:12,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:37:12,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:12,300 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:37:12,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:37:12,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513335887] [2022-11-20 11:37:12,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513335887] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:37:12,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:37:12,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:37:12,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553673115] [2022-11-20 11:37:12,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:37:12,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:37:12,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:37:12,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:37:12,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:37:12,311 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 360 [2022-11-20 11:37:12,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 319 transitions, 646 flow. Second operand has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:12,314 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:37:12,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 360 [2022-11-20 11:37:12,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:37:12,472 INFO L130 PetriNetUnfolder]: 10/507 cut-off events. [2022-11-20 11:37:12,472 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-20 11:37:12,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 528 conditions, 507 events. 10/507 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2393 event pairs, 0 based on Foata normal form. 0/462 useless extension candidates. Maximal degree in co-relation 524. Up to 10 conditions per place. [2022-11-20 11:37:12,480 INFO L137 encePairwiseOnDemand]: 357/360 looper letters, 11 selfloop transitions, 2 changer transitions 0/323 dead transitions. [2022-11-20 11:37:12,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 323 transitions, 680 flow [2022-11-20 11:37:12,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:37:12,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:37:12,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 944 transitions. [2022-11-20 11:37:12,485 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8740740740740741 [2022-11-20 11:37:12,485 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 944 transitions. [2022-11-20 11:37:12,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 944 transitions. [2022-11-20 11:37:12,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:37:12,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 944 transitions. [2022-11-20 11:37:12,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 314.6666666666667) internal successors, (944), 3 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:12,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 360.0) internal successors, (1440), 4 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:12,496 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 360.0) internal successors, (1440), 4 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:12,497 INFO L175 Difference]: Start difference. First operand has 316 places, 319 transitions, 646 flow. Second operand 3 states and 944 transitions. [2022-11-20 11:37:12,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 323 transitions, 680 flow [2022-11-20 11:37:12,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 323 transitions, 680 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:37:12,509 INFO L231 Difference]: Finished difference. Result has 319 places, 320 transitions, 658 flow [2022-11-20 11:37:12,510 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=360, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=658, PETRI_PLACES=319, PETRI_TRANSITIONS=320} [2022-11-20 11:37:12,511 INFO L288 CegarLoopForPetriNet]: 318 programPoint places, 1 predicate places. [2022-11-20 11:37:12,511 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 320 transitions, 658 flow [2022-11-20 11:37:12,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:12,513 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:37:12,513 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:37:12,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:37:12,514 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-20 11:37:12,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:12,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1096004172, now seen corresponding path program 1 times [2022-11-20 11:37:12,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:37:12,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082978568] [2022-11-20 11:37:12,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:12,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:37:12,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:12,750 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:37:12,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:37:12,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082978568] [2022-11-20 11:37:12,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082978568] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:37:12,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649110985] [2022-11-20 11:37:12,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:12,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:37:12,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:37:12,756 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:37:12,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:37:12,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:12,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:37:12,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:37:12,993 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:37:12,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:37:13,064 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:37:13,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649110985] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:37:13,065 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:37:13,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-20 11:37:13,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012006063] [2022-11-20 11:37:13,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:37:13,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:37:13,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:37:13,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:37:13,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:37:13,073 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 360 [2022-11-20 11:37:13,078 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 320 transitions, 658 flow. Second operand has 10 states, 10 states have (on average 311.1) internal successors, (3111), 10 states have internal predecessors, (3111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:13,078 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:37:13,078 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 360 [2022-11-20 11:37:13,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:37:13,306 INFO L130 PetriNetUnfolder]: 10/514 cut-off events. [2022-11-20 11:37:13,306 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-20 11:37:13,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 551 conditions, 514 events. 10/514 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2391 event pairs, 0 based on Foata normal form. 2/472 useless extension candidates. Maximal degree in co-relation 545. Up to 7 conditions per place. [2022-11-20 11:37:13,314 INFO L137 encePairwiseOnDemand]: 354/360 looper letters, 12 selfloop transitions, 9 changer transitions 0/330 dead transitions. [2022-11-20 11:37:13,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 330 transitions, 722 flow [2022-11-20 11:37:13,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:37:13,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:37:13,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2804 transitions. [2022-11-20 11:37:13,322 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8654320987654321 [2022-11-20 11:37:13,323 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2804 transitions. [2022-11-20 11:37:13,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2804 transitions. [2022-11-20 11:37:13,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:37:13,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2804 transitions. [2022-11-20 11:37:13,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 311.55555555555554) internal successors, (2804), 9 states have internal predecessors, (2804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:13,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 360.0) internal successors, (3600), 10 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:13,344 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 360.0) internal successors, (3600), 10 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:13,345 INFO L175 Difference]: Start difference. First operand has 319 places, 320 transitions, 658 flow. Second operand 9 states and 2804 transitions. [2022-11-20 11:37:13,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 330 transitions, 722 flow [2022-11-20 11:37:13,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 330 transitions, 720 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:37:13,355 INFO L231 Difference]: Finished difference. Result has 329 places, 326 transitions, 706 flow [2022-11-20 11:37:13,356 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=360, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=706, PETRI_PLACES=329, PETRI_TRANSITIONS=326} [2022-11-20 11:37:13,359 INFO L288 CegarLoopForPetriNet]: 318 programPoint places, 11 predicate places. [2022-11-20 11:37:13,359 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 326 transitions, 706 flow [2022-11-20 11:37:13,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 311.1) internal successors, (3111), 10 states have internal predecessors, (3111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:13,362 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:37:13,363 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 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] [2022-11-20 11:37:13,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:37:13,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:37:13,569 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-20 11:37:13,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:13,570 INFO L85 PathProgramCache]: Analyzing trace with hash 684620972, now seen corresponding path program 2 times [2022-11-20 11:37:13,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:37:13,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30387848] [2022-11-20 11:37:13,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:13,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:37:13,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:13,904 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:37:13,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:37:13,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30387848] [2022-11-20 11:37:13,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30387848] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:37:13,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266928200] [2022-11-20 11:37:13,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:37:13,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:37:13,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:37:13,908 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:37:13,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:37:14,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:37:14,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:37:14,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:37:14,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:37:14,158 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:37:14,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:37:14,324 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:37:14,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266928200] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:37:14,325 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:37:14,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-20 11:37:14,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218681830] [2022-11-20 11:37:14,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:37:14,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:37:14,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:37:14,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:37:14,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:37:14,340 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 360 [2022-11-20 11:37:14,351 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 326 transitions, 706 flow. Second operand has 18 states, 18 states have (on average 311.27777777777777) internal successors, (5603), 18 states have internal predecessors, (5603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:14,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:37:14,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 360 [2022-11-20 11:37:14,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:37:14,827 INFO L130 PetriNetUnfolder]: 10/534 cut-off events. [2022-11-20 11:37:14,828 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2022-11-20 11:37:14,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 640 conditions, 534 events. 10/534 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2387 event pairs, 0 based on Foata normal form. 4/494 useless extension candidates. Maximal degree in co-relation 632. Up to 11 conditions per place. [2022-11-20 11:37:14,835 INFO L137 encePairwiseOnDemand]: 354/360 looper letters, 20 selfloop transitions, 21 changer transitions 0/350 dead transitions. [2022-11-20 11:37:14,836 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 350 transitions, 896 flow [2022-11-20 11:37:14,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:37:14,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 11:37:14,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6534 transitions. [2022-11-20 11:37:14,852 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8642857142857143 [2022-11-20 11:37:14,853 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6534 transitions. [2022-11-20 11:37:14,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6534 transitions. [2022-11-20 11:37:14,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:37:14,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6534 transitions. [2022-11-20 11:37:14,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 311.14285714285717) internal successors, (6534), 21 states have internal predecessors, (6534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:14,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 360.0) internal successors, (7920), 22 states have internal predecessors, (7920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:14,896 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 360.0) internal successors, (7920), 22 states have internal predecessors, (7920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:14,896 INFO L175 Difference]: Start difference. First operand has 329 places, 326 transitions, 706 flow. Second operand 21 states and 6534 transitions. [2022-11-20 11:37:14,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 350 transitions, 896 flow [2022-11-20 11:37:14,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 350 transitions, 882 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-20 11:37:14,908 INFO L231 Difference]: Finished difference. Result has 353 places, 339 transitions, 830 flow [2022-11-20 11:37:14,908 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=360, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=830, PETRI_PLACES=353, PETRI_TRANSITIONS=339} [2022-11-20 11:37:14,909 INFO L288 CegarLoopForPetriNet]: 318 programPoint places, 35 predicate places. [2022-11-20 11:37:14,910 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 339 transitions, 830 flow [2022-11-20 11:37:14,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 311.27777777777777) internal successors, (5603), 18 states have internal predecessors, (5603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:14,913 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:37:14,913 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 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] [2022-11-20 11:37:14,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:37:15,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:37:15,129 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-20 11:37:15,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:15,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1675253396, now seen corresponding path program 3 times [2022-11-20 11:37:15,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:37:15,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690692880] [2022-11-20 11:37:15,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:15,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:37:15,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:15,690 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:37:15,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:37:15,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690692880] [2022-11-20 11:37:15,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690692880] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:37:15,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422524760] [2022-11-20 11:37:15,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:37:15,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:37:15,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:37:15,696 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:37:15,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:37:15,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-20 11:37:15,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:37:15,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 11:37:15,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:37:16,072 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:37:16,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:37:16,424 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:37:16,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422524760] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:37:16,426 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:37:16,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-20 11:37:16,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875838266] [2022-11-20 11:37:16,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:37:16,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 11:37:16,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:37:16,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 11:37:16,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:37:16,449 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 360 [2022-11-20 11:37:16,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 339 transitions, 830 flow. Second operand has 23 states, 23 states have (on average 311.4347826086956) internal successors, (7163), 23 states have internal predecessors, (7163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:16,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:37:16,484 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 360 [2022-11-20 11:37:16,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:37:17,144 INFO L130 PetriNetUnfolder]: 10/549 cut-off events. [2022-11-20 11:37:17,145 INFO L131 PetriNetUnfolder]: For 113/113 co-relation queries the response was YES. [2022-11-20 11:37:17,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 741 conditions, 549 events. 10/549 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2382 event pairs, 0 based on Foata normal form. 3/508 useless extension candidates. Maximal degree in co-relation 728. Up to 17 conditions per place. [2022-11-20 11:37:17,154 INFO L137 encePairwiseOnDemand]: 354/360 looper letters, 26 selfloop transitions, 30 changer transitions 0/365 dead transitions. [2022-11-20 11:37:17,154 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 365 transitions, 1088 flow [2022-11-20 11:37:17,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 11:37:17,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-20 11:37:17,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 9329 transitions. [2022-11-20 11:37:17,177 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8637962962962963 [2022-11-20 11:37:17,177 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 9329 transitions. [2022-11-20 11:37:17,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 9329 transitions. [2022-11-20 11:37:17,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:37:17,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 9329 transitions. [2022-11-20 11:37:17,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 310.96666666666664) internal successors, (9329), 30 states have internal predecessors, (9329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:17,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 360.0) internal successors, (11160), 31 states have internal predecessors, (11160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:17,234 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 360.0) internal successors, (11160), 31 states have internal predecessors, (11160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:17,234 INFO L175 Difference]: Start difference. First operand has 353 places, 339 transitions, 830 flow. Second operand 30 states and 9329 transitions. [2022-11-20 11:37:17,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 365 transitions, 1088 flow [2022-11-20 11:37:17,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 365 transitions, 1058 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-11-20 11:37:17,247 INFO L231 Difference]: Finished difference. Result has 380 places, 349 transitions, 958 flow [2022-11-20 11:37:17,248 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=360, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=958, PETRI_PLACES=380, PETRI_TRANSITIONS=349} [2022-11-20 11:37:17,249 INFO L288 CegarLoopForPetriNet]: 318 programPoint places, 62 predicate places. [2022-11-20 11:37:17,249 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 349 transitions, 958 flow [2022-11-20 11:37:17,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 311.4347826086956) internal successors, (7163), 23 states have internal predecessors, (7163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:17,253 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:37:17,253 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 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] [2022-11-20 11:37:17,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:37:17,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:37:17,460 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-20 11:37:17,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:17,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1762761981, now seen corresponding path program 4 times [2022-11-20 11:37:17,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:37:17,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137878445] [2022-11-20 11:37:17,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:17,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:37:17,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:37:17,503 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:37:17,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:37:17,563 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:37:17,564 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 11:37:17,565 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-11-20 11:37:17,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2022-11-20 11:37:17,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2022-11-20 11:37:17,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2022-11-20 11:37:17,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2022-11-20 11:37:17,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2022-11-20 11:37:17,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2022-11-20 11:37:17,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2022-11-20 11:37:17,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2022-11-20 11:37:17,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2022-11-20 11:37:17,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2022-11-20 11:37:17,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2022-11-20 11:37:17,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2022-11-20 11:37:17,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2022-11-20 11:37:17,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2022-11-20 11:37:17,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2022-11-20 11:37:17,605 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2022-11-20 11:37:17,605 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2022-11-20 11:37:17,605 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2022-11-20 11:37:17,606 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2022-11-20 11:37:17,606 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2022-11-20 11:37:17,606 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2022-11-20 11:37:17,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:37:17,607 INFO L444 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2022-11-20 11:37:17,610 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 11:37:17,610 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-20 11:37:17,711 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 11:37:17,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 411 places, 466 transitions, 950 flow [2022-11-20 11:37:17,941 INFO L130 PetriNetUnfolder]: 118/919 cut-off events. [2022-11-20 11:37:17,941 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-20 11:37:17,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 933 conditions, 919 events. 118/919 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5774 event pairs, 0 based on Foata normal form. 0/753 useless extension candidates. Maximal degree in co-relation 573. Up to 12 conditions per place. [2022-11-20 11:37:17,963 INFO L82 GeneralOperation]: Start removeDead. Operand has 411 places, 466 transitions, 950 flow [2022-11-20 11:37:17,983 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 411 places, 466 transitions, 950 flow [2022-11-20 11:37:17,985 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:37:17,995 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;@71c58d7a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:37:17,996 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-11-20 11:37:18,011 INFO L130 PetriNetUnfolder]: 19/160 cut-off events. [2022-11-20 11:37:18,012 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 11:37:18,012 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:37:18,012 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] [2022-11-20 11:37:18,012 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-20 11:37:18,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:18,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1830606083, now seen corresponding path program 1 times [2022-11-20 11:37:18,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:37:18,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854924742] [2022-11-20 11:37:18,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:18,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:37:18,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:18,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:37:18,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:37:18,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854924742] [2022-11-20 11:37:18,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854924742] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:37:18,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:37:18,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:37:18,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391016148] [2022-11-20 11:37:18,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:37:18,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:37:18,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:37:18,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:37:18,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:37:18,057 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 408 out of 466 [2022-11-20 11:37:18,058 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 466 transitions, 950 flow. Second operand has 2 states, 2 states have (on average 410.0) internal successors, (820), 2 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:18,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:37:18,058 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 408 of 466 [2022-11-20 11:37:18,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:37:18,322 INFO L130 PetriNetUnfolder]: 17/810 cut-off events. [2022-11-20 11:37:18,323 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-20 11:37:18,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 831 conditions, 810 events. 17/810 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 4774 event pairs, 0 based on Foata normal form. 124/861 useless extension candidates. Maximal degree in co-relation 507. Up to 7 conditions per place. [2022-11-20 11:37:18,343 INFO L137 encePairwiseOnDemand]: 416/466 looper letters, 4 selfloop transitions, 0 changer transitions 0/412 dead transitions. [2022-11-20 11:37:18,344 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 412 transitions, 850 flow [2022-11-20 11:37:18,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:37:18,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 11:37:18,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 870 transitions. [2022-11-20 11:37:18,347 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9334763948497854 [2022-11-20 11:37:18,347 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 870 transitions. [2022-11-20 11:37:18,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 870 transitions. [2022-11-20 11:37:18,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:37:18,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 870 transitions. [2022-11-20 11:37:18,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 435.0) internal successors, (870), 2 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:18,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 466.0) internal successors, (1398), 3 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:18,354 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 466.0) internal successors, (1398), 3 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:18,359 INFO L175 Difference]: Start difference. First operand has 411 places, 466 transitions, 950 flow. Second operand 2 states and 870 transitions. [2022-11-20 11:37:18,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 412 transitions, 850 flow [2022-11-20 11:37:18,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 412 transitions, 850 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:37:18,369 INFO L231 Difference]: Finished difference. Result has 408 places, 412 transitions, 842 flow [2022-11-20 11:37:18,370 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=842, PETRI_PLACES=408, PETRI_TRANSITIONS=412} [2022-11-20 11:37:18,372 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, -3 predicate places. [2022-11-20 11:37:18,372 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 412 transitions, 842 flow [2022-11-20 11:37:18,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 410.0) internal successors, (820), 2 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:18,373 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:37:18,373 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] [2022-11-20 11:37:18,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:37:18,374 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-20 11:37:18,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:18,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1992012664, now seen corresponding path program 1 times [2022-11-20 11:37:18,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:37:18,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944991390] [2022-11-20 11:37:18,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:18,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:37:18,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:18,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:37:18,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:37:18,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944991390] [2022-11-20 11:37:18,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944991390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:37:18,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:37:18,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:37:18,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770427534] [2022-11-20 11:37:18,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:37:18,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:37:18,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:37:18,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:37:18,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:37:18,446 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 401 out of 466 [2022-11-20 11:37:18,447 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 412 transitions, 842 flow. Second operand has 3 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:18,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:37:18,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 401 of 466 [2022-11-20 11:37:18,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:37:18,713 INFO L130 PetriNetUnfolder]: 17/814 cut-off events. [2022-11-20 11:37:18,713 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-20 11:37:18,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 847 conditions, 814 events. 17/814 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4784 event pairs, 0 based on Foata normal form. 0/741 useless extension candidates. Maximal degree in co-relation 842. Up to 14 conditions per place. [2022-11-20 11:37:18,734 INFO L137 encePairwiseOnDemand]: 463/466 looper letters, 13 selfloop transitions, 2 changer transitions 0/416 dead transitions. [2022-11-20 11:37:18,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 416 transitions, 880 flow [2022-11-20 11:37:18,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:37:18,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:37:18,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1219 transitions. [2022-11-20 11:37:18,738 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8719599427753935 [2022-11-20 11:37:18,738 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1219 transitions. [2022-11-20 11:37:18,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1219 transitions. [2022-11-20 11:37:18,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:37:18,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1219 transitions. [2022-11-20 11:37:18,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 406.3333333333333) internal successors, (1219), 3 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:18,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 466.0) internal successors, (1864), 4 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:18,747 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 466.0) internal successors, (1864), 4 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:18,748 INFO L175 Difference]: Start difference. First operand has 408 places, 412 transitions, 842 flow. Second operand 3 states and 1219 transitions. [2022-11-20 11:37:18,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 416 transitions, 880 flow [2022-11-20 11:37:18,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 416 transitions, 880 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:37:18,758 INFO L231 Difference]: Finished difference. Result has 411 places, 413 transitions, 854 flow [2022-11-20 11:37:18,759 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=854, PETRI_PLACES=411, PETRI_TRANSITIONS=413} [2022-11-20 11:37:18,761 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 0 predicate places. [2022-11-20 11:37:18,762 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 413 transitions, 854 flow [2022-11-20 11:37:18,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:18,763 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:37:18,763 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:37:18,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:37:18,765 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-20 11:37:18,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:18,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1902015645, now seen corresponding path program 1 times [2022-11-20 11:37:18,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:37:18,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676722880] [2022-11-20 11:37:18,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:18,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:37:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:18,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:37:18,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:37:18,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676722880] [2022-11-20 11:37:18,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676722880] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:37:18,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811348381] [2022-11-20 11:37:18,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:18,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:37:18,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:37:18,887 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:37:18,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:37:19,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:19,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:37:19,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:37:19,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:37:19,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:37:19,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811348381] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:37:19,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:37:19,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-20 11:37:19,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745981925] [2022-11-20 11:37:19,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:37:19,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:37:19,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:37:19,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:37:19,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:37:19,044 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 401 out of 466 [2022-11-20 11:37:19,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 413 transitions, 854 flow. Second operand has 3 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:19,046 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:37:19,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 401 of 466 [2022-11-20 11:37:19,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:37:19,270 INFO L130 PetriNetUnfolder]: 13/649 cut-off events. [2022-11-20 11:37:19,270 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-11-20 11:37:19,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 692 conditions, 649 events. 13/649 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3410 event pairs, 0 based on Foata normal form. 0/593 useless extension candidates. Maximal degree in co-relation 685. Up to 16 conditions per place. [2022-11-20 11:37:19,291 INFO L137 encePairwiseOnDemand]: 463/466 looper letters, 13 selfloop transitions, 2 changer transitions 0/417 dead transitions. [2022-11-20 11:37:19,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 417 transitions, 892 flow [2022-11-20 11:37:19,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:37:19,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:37:19,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1219 transitions. [2022-11-20 11:37:19,296 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8719599427753935 [2022-11-20 11:37:19,296 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1219 transitions. [2022-11-20 11:37:19,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1219 transitions. [2022-11-20 11:37:19,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:37:19,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1219 transitions. [2022-11-20 11:37:19,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 406.3333333333333) internal successors, (1219), 3 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:19,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 466.0) internal successors, (1864), 4 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:19,305 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 466.0) internal successors, (1864), 4 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:19,305 INFO L175 Difference]: Start difference. First operand has 411 places, 413 transitions, 854 flow. Second operand 3 states and 1219 transitions. [2022-11-20 11:37:19,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 417 transitions, 892 flow [2022-11-20 11:37:19,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 417 transitions, 890 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:37:19,316 INFO L231 Difference]: Finished difference. Result has 413 places, 414 transitions, 864 flow [2022-11-20 11:37:19,317 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=864, PETRI_PLACES=413, PETRI_TRANSITIONS=414} [2022-11-20 11:37:19,318 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 2 predicate places. [2022-11-20 11:37:19,318 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 414 transitions, 864 flow [2022-11-20 11:37:19,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:19,319 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:37:19,319 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:37:19,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:37:19,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:37:19,526 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-20 11:37:19,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:19,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1279722779, now seen corresponding path program 1 times [2022-11-20 11:37:19,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:37:19,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126870016] [2022-11-20 11:37:19,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:19,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:37:19,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:19,604 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 11:37:19,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:37:19,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126870016] [2022-11-20 11:37:19,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126870016] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:37:19,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062994976] [2022-11-20 11:37:19,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:19,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:37:19,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:37:19,607 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:37:19,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:37:19,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:19,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:37:19,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:37:19,793 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 11:37:19,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:37:19,835 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 11:37:19,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062994976] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:37:19,836 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:37:19,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-20 11:37:19,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487757205] [2022-11-20 11:37:19,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:37:19,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:37:19,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:37:19,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:37:19,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:37:19,842 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 400 out of 466 [2022-11-20 11:37:19,847 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 414 transitions, 864 flow. Second operand has 10 states, 10 states have (on average 402.2) internal successors, (4022), 10 states have internal predecessors, (4022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:19,848 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:37:19,848 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 400 of 466 [2022-11-20 11:37:19,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:37:20,192 INFO L130 PetriNetUnfolder]: 13/656 cut-off events. [2022-11-20 11:37:20,192 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-20 11:37:20,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 711 conditions, 656 events. 13/656 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3407 event pairs, 0 based on Foata normal form. 2/604 useless extension candidates. Maximal degree in co-relation 703. Up to 11 conditions per place. [2022-11-20 11:37:20,208 INFO L137 encePairwiseOnDemand]: 460/466 looper letters, 14 selfloop transitions, 9 changer transitions 0/424 dead transitions. [2022-11-20 11:37:20,208 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 424 transitions, 932 flow [2022-11-20 11:37:20,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:37:20,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:37:20,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3625 transitions. [2022-11-20 11:37:20,220 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8643299952312827 [2022-11-20 11:37:20,220 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3625 transitions. [2022-11-20 11:37:20,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3625 transitions. [2022-11-20 11:37:20,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:37:20,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3625 transitions. [2022-11-20 11:37:20,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 402.77777777777777) internal successors, (3625), 9 states have internal predecessors, (3625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:20,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 466.0) internal successors, (4660), 10 states have internal predecessors, (4660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:20,246 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 466.0) internal successors, (4660), 10 states have internal predecessors, (4660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:20,247 INFO L175 Difference]: Start difference. First operand has 413 places, 414 transitions, 864 flow. Second operand 9 states and 3625 transitions. [2022-11-20 11:37:20,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 424 transitions, 932 flow [2022-11-20 11:37:20,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 424 transitions, 930 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:37:20,257 INFO L231 Difference]: Finished difference. Result has 423 places, 420 transitions, 912 flow [2022-11-20 11:37:20,259 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=862, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=912, PETRI_PLACES=423, PETRI_TRANSITIONS=420} [2022-11-20 11:37:20,259 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 12 predicate places. [2022-11-20 11:37:20,260 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 420 transitions, 912 flow [2022-11-20 11:37:20,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 402.2) internal successors, (4022), 10 states have internal predecessors, (4022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:20,262 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:37:20,262 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:37:20,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:37:20,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 11:37:20,470 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-20 11:37:20,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:20,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1448737851, now seen corresponding path program 2 times [2022-11-20 11:37:20,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:37:20,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897524137] [2022-11-20 11:37:20,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:20,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:37:20,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:20,669 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 11:37:20,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:37:20,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897524137] [2022-11-20 11:37:20,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897524137] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:37:20,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872732725] [2022-11-20 11:37:20,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:37:20,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:37:20,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:37:20,673 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:37:20,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:37:20,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:37:20,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:37:20,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:37:20,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:37:20,891 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 11:37:20,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:37:21,031 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 11:37:21,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872732725] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:37:21,032 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:37:21,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-20 11:37:21,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291647803] [2022-11-20 11:37:21,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:37:21,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:37:21,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:37:21,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:37:21,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:37:21,048 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 400 out of 466 [2022-11-20 11:37:21,058 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 420 transitions, 912 flow. Second operand has 18 states, 18 states have (on average 402.3333333333333) internal successors, (7242), 18 states have internal predecessors, (7242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:21,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:37:21,059 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 400 of 466 [2022-11-20 11:37:21,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:37:21,567 INFO L130 PetriNetUnfolder]: 13/676 cut-off events. [2022-11-20 11:37:21,567 INFO L131 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2022-11-20 11:37:21,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 800 conditions, 676 events. 13/676 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3408 event pairs, 0 based on Foata normal form. 4/626 useless extension candidates. Maximal degree in co-relation 790. Up to 11 conditions per place. [2022-11-20 11:37:21,587 INFO L137 encePairwiseOnDemand]: 460/466 looper letters, 22 selfloop transitions, 21 changer transitions 0/444 dead transitions. [2022-11-20 11:37:21,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 444 transitions, 1106 flow [2022-11-20 11:37:21,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:37:21,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 11:37:21,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 8447 transitions. [2022-11-20 11:37:21,609 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8631718781933374 [2022-11-20 11:37:21,609 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 8447 transitions. [2022-11-20 11:37:21,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 8447 transitions. [2022-11-20 11:37:21,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:37:21,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 8447 transitions. [2022-11-20 11:37:21,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 402.23809523809524) internal successors, (8447), 21 states have internal predecessors, (8447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:21,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 466.0) internal successors, (10252), 22 states have internal predecessors, (10252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:21,667 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 466.0) internal successors, (10252), 22 states have internal predecessors, (10252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:21,667 INFO L175 Difference]: Start difference. First operand has 423 places, 420 transitions, 912 flow. Second operand 21 states and 8447 transitions. [2022-11-20 11:37:21,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 444 transitions, 1106 flow [2022-11-20 11:37:21,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 444 transitions, 1092 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-20 11:37:21,678 INFO L231 Difference]: Finished difference. Result has 447 places, 433 transitions, 1036 flow [2022-11-20 11:37:21,679 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=906, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1036, PETRI_PLACES=447, PETRI_TRANSITIONS=433} [2022-11-20 11:37:21,680 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 36 predicate places. [2022-11-20 11:37:21,681 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 433 transitions, 1036 flow [2022-11-20 11:37:21,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 402.3333333333333) internal successors, (7242), 18 states have internal predecessors, (7242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:21,684 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:37:21,684 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:37:21,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:37:21,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:37:21,892 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-20 11:37:21,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:21,892 INFO L85 PathProgramCache]: Analyzing trace with hash 738898555, now seen corresponding path program 3 times [2022-11-20 11:37:21,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:37:21,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307851598] [2022-11-20 11:37:21,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:21,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:37:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:22,302 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 11:37:22,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:37:22,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307851598] [2022-11-20 11:37:22,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307851598] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:37:22,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563867461] [2022-11-20 11:37:22,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:37:22,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:37:22,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:37:22,304 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:37:22,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 11:37:22,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-20 11:37:22,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:37:22,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 11:37:22,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:37:22,688 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 11:37:22,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:37:22,955 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 11:37:22,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563867461] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:37:22,955 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:37:22,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-20 11:37:22,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195748664] [2022-11-20 11:37:22,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:37:22,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 11:37:22,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:37:22,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 11:37:22,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:37:22,982 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 400 out of 466 [2022-11-20 11:37:22,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 433 transitions, 1036 flow. Second operand has 23 states, 23 states have (on average 402.4782608695652) internal successors, (9257), 23 states have internal predecessors, (9257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:22,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:37:22,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 400 of 466 [2022-11-20 11:37:22,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:37:23,683 INFO L130 PetriNetUnfolder]: 13/691 cut-off events. [2022-11-20 11:37:23,683 INFO L131 PetriNetUnfolder]: For 126/126 co-relation queries the response was YES. [2022-11-20 11:37:23,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 901 conditions, 691 events. 13/691 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3420 event pairs, 0 based on Foata normal form. 3/640 useless extension candidates. Maximal degree in co-relation 886. Up to 17 conditions per place. [2022-11-20 11:37:23,715 INFO L137 encePairwiseOnDemand]: 460/466 looper letters, 28 selfloop transitions, 30 changer transitions 0/459 dead transitions. [2022-11-20 11:37:23,718 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 459 transitions, 1298 flow [2022-11-20 11:37:23,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 11:37:23,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-20 11:37:23,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 12061 transitions. [2022-11-20 11:37:23,735 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8627324749642347 [2022-11-20 11:37:23,735 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 12061 transitions. [2022-11-20 11:37:23,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 12061 transitions. [2022-11-20 11:37:23,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:37:23,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 12061 transitions. [2022-11-20 11:37:23,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 402.03333333333336) internal successors, (12061), 30 states have internal predecessors, (12061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:23,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 466.0) internal successors, (14446), 31 states have internal predecessors, (14446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:23,799 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 466.0) internal successors, (14446), 31 states have internal predecessors, (14446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:23,799 INFO L175 Difference]: Start difference. First operand has 447 places, 433 transitions, 1036 flow. Second operand 30 states and 12061 transitions. [2022-11-20 11:37:23,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 459 transitions, 1298 flow [2022-11-20 11:37:23,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 459 transitions, 1268 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-11-20 11:37:23,812 INFO L231 Difference]: Finished difference. Result has 474 places, 443 transitions, 1164 flow [2022-11-20 11:37:23,813 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=1012, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1164, PETRI_PLACES=474, PETRI_TRANSITIONS=443} [2022-11-20 11:37:23,814 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 63 predicate places. [2022-11-20 11:37:23,814 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 443 transitions, 1164 flow [2022-11-20 11:37:23,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 402.4782608695652) internal successors, (9257), 23 states have internal predecessors, (9257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:23,819 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:37:23,819 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:37:23,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:37:24,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 11:37:24,028 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-20 11:37:24,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:24,028 INFO L85 PathProgramCache]: Analyzing trace with hash -75184896, now seen corresponding path program 4 times [2022-11-20 11:37:24,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:37:24,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162366248] [2022-11-20 11:37:24,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:24,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:37:24,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:37:24,064 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:37:24,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:37:24,095 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:37:24,095 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 11:37:24,095 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 27 remaining) [2022-11-20 11:37:24,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (25 of 27 remaining) [2022-11-20 11:37:24,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (24 of 27 remaining) [2022-11-20 11:37:24,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (23 of 27 remaining) [2022-11-20 11:37:24,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (22 of 27 remaining) [2022-11-20 11:37:24,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (21 of 27 remaining) [2022-11-20 11:37:24,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (20 of 27 remaining) [2022-11-20 11:37:24,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 27 remaining) [2022-11-20 11:37:24,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (18 of 27 remaining) [2022-11-20 11:37:24,098 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (17 of 27 remaining) [2022-11-20 11:37:24,098 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 27 remaining) [2022-11-20 11:37:24,098 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 27 remaining) [2022-11-20 11:37:24,098 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 27 remaining) [2022-11-20 11:37:24,099 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 27 remaining) [2022-11-20 11:37:24,099 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 27 remaining) [2022-11-20 11:37:24,099 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 27 remaining) [2022-11-20 11:37:24,099 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 27 remaining) [2022-11-20 11:37:24,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 27 remaining) [2022-11-20 11:37:24,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 27 remaining) [2022-11-20 11:37:24,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 27 remaining) [2022-11-20 11:37:24,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 27 remaining) [2022-11-20 11:37:24,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 27 remaining) [2022-11-20 11:37:24,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 27 remaining) [2022-11-20 11:37:24,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 27 remaining) [2022-11-20 11:37:24,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 27 remaining) [2022-11-20 11:37:24,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 27 remaining) [2022-11-20 11:37:24,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 27 remaining) [2022-11-20 11:37:24,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:37:24,102 INFO L444 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1] [2022-11-20 11:37:24,103 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 11:37:24,103 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-20 11:37:24,180 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 11:37:24,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 504 places, 572 transitions, 1174 flow [2022-11-20 11:37:24,609 INFO L130 PetriNetUnfolder]: 168/1312 cut-off events. [2022-11-20 11:37:24,610 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-20 11:37:24,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1340 conditions, 1312 events. 168/1312 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8742 event pairs, 1 based on Foata normal form. 0/1077 useless extension candidates. Maximal degree in co-relation 927. Up to 16 conditions per place. [2022-11-20 11:37:24,658 INFO L82 GeneralOperation]: Start removeDead. Operand has 504 places, 572 transitions, 1174 flow [2022-11-20 11:37:24,682 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 504 places, 572 transitions, 1174 flow [2022-11-20 11:37:24,683 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:37:24,684 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;@71c58d7a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:37:24,684 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2022-11-20 11:37:24,697 INFO L130 PetriNetUnfolder]: 19/160 cut-off events. [2022-11-20 11:37:24,698 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 11:37:24,698 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:37:24,698 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] [2022-11-20 11:37:24,699 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-11-20 11:37:24,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:24,699 INFO L85 PathProgramCache]: Analyzing trace with hash -997920125, now seen corresponding path program 1 times [2022-11-20 11:37:24,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:37:24,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351309202] [2022-11-20 11:37:24,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:24,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:37:24,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:24,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:37:24,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:37:24,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351309202] [2022-11-20 11:37:24,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351309202] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:37:24,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:37:24,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:37:24,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661789973] [2022-11-20 11:37:24,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:37:24,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:37:24,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:37:24,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:37:24,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:37:24,728 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 499 out of 572 [2022-11-20 11:37:24,729 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 572 transitions, 1174 flow. Second operand has 2 states, 2 states have (on average 501.0) internal successors, (1002), 2 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:24,729 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:37:24,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 499 of 572 [2022-11-20 11:37:24,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:37:25,153 INFO L130 PetriNetUnfolder]: 27/1160 cut-off events. [2022-11-20 11:37:25,153 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-11-20 11:37:25,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1204 conditions, 1160 events. 27/1160 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 7577 event pairs, 1 based on Foata normal form. 250/1305 useless extension candidates. Maximal degree in co-relation 824. Up to 16 conditions per place. [2022-11-20 11:37:25,194 INFO L137 encePairwiseOnDemand]: 510/572 looper letters, 6 selfloop transitions, 0 changer transitions 0/505 dead transitions. [2022-11-20 11:37:25,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 505 transitions, 1052 flow [2022-11-20 11:37:25,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:37:25,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 11:37:25,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1066 transitions. [2022-11-20 11:37:25,197 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9318181818181818 [2022-11-20 11:37:25,197 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1066 transitions. [2022-11-20 11:37:25,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1066 transitions. [2022-11-20 11:37:25,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:37:25,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1066 transitions. [2022-11-20 11:37:25,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 533.0) internal successors, (1066), 2 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:25,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 572.0) internal successors, (1716), 3 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:25,208 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 572.0) internal successors, (1716), 3 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:25,208 INFO L175 Difference]: Start difference. First operand has 504 places, 572 transitions, 1174 flow. Second operand 2 states and 1066 transitions. [2022-11-20 11:37:25,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 505 transitions, 1052 flow [2022-11-20 11:37:25,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 505 transitions, 1052 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:37:25,219 INFO L231 Difference]: Finished difference. Result has 500 places, 505 transitions, 1040 flow [2022-11-20 11:37:25,220 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=572, PETRI_DIFFERENCE_MINUEND_FLOW=1040, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=1040, PETRI_PLACES=500, PETRI_TRANSITIONS=505} [2022-11-20 11:37:25,221 INFO L288 CegarLoopForPetriNet]: 504 programPoint places, -4 predicate places. [2022-11-20 11:37:25,222 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 505 transitions, 1040 flow [2022-11-20 11:37:25,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 501.0) internal successors, (1002), 2 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:25,222 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:37:25,223 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] [2022-11-20 11:37:25,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 11:37:25,223 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-11-20 11:37:25,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:25,224 INFO L85 PathProgramCache]: Analyzing trace with hash 207046708, now seen corresponding path program 1 times [2022-11-20 11:37:25,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:37:25,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861852937] [2022-11-20 11:37:25,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:25,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:37:25,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:25,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:37:25,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:37:25,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861852937] [2022-11-20 11:37:25,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861852937] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:37:25,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:37:25,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:37:25,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145282484] [2022-11-20 11:37:25,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:37:25,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:37:25,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:37:25,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:37:25,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:37:25,293 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 492 out of 572 [2022-11-20 11:37:25,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 505 transitions, 1040 flow. Second operand has 3 states, 3 states have (on average 493.0) internal successors, (1479), 3 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:25,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:37:25,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 492 of 572 [2022-11-20 11:37:25,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:37:25,800 INFO L130 PetriNetUnfolder]: 27/1164 cut-off events. [2022-11-20 11:37:25,801 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-11-20 11:37:25,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1220 conditions, 1164 events. 27/1164 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 7575 event pairs, 1 based on Foata normal form. 0/1059 useless extension candidates. Maximal degree in co-relation 1214. Up to 23 conditions per place. [2022-11-20 11:37:25,843 INFO L137 encePairwiseOnDemand]: 569/572 looper letters, 15 selfloop transitions, 2 changer transitions 0/509 dead transitions. [2022-11-20 11:37:25,844 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 509 transitions, 1082 flow [2022-11-20 11:37:25,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:37:25,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:37:25,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1494 transitions. [2022-11-20 11:37:25,847 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8706293706293706 [2022-11-20 11:37:25,847 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1494 transitions. [2022-11-20 11:37:25,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1494 transitions. [2022-11-20 11:37:25,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:37:25,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1494 transitions. [2022-11-20 11:37:25,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 498.0) internal successors, (1494), 3 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:25,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 572.0) internal successors, (2288), 4 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:25,854 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 572.0) internal successors, (2288), 4 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:25,854 INFO L175 Difference]: Start difference. First operand has 500 places, 505 transitions, 1040 flow. Second operand 3 states and 1494 transitions. [2022-11-20 11:37:25,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 509 transitions, 1082 flow [2022-11-20 11:37:25,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 509 transitions, 1082 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:37:25,865 INFO L231 Difference]: Finished difference. Result has 503 places, 506 transitions, 1052 flow [2022-11-20 11:37:25,866 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=572, PETRI_DIFFERENCE_MINUEND_FLOW=1040, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1052, PETRI_PLACES=503, PETRI_TRANSITIONS=506} [2022-11-20 11:37:25,868 INFO L288 CegarLoopForPetriNet]: 504 programPoint places, -1 predicate places. [2022-11-20 11:37:25,868 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 506 transitions, 1052 flow [2022-11-20 11:37:25,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 493.0) internal successors, (1479), 3 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:25,869 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:37:25,869 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:37:25,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 11:37:25,870 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-11-20 11:37:25,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:25,870 INFO L85 PathProgramCache]: Analyzing trace with hash 322414749, now seen corresponding path program 1 times [2022-11-20 11:37:25,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:37:25,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258060042] [2022-11-20 11:37:25,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:25,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:37:25,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:25,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:37:25,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:37:25,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258060042] [2022-11-20 11:37:25,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258060042] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:37:25,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040469908] [2022-11-20 11:37:25,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:25,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:37:25,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:37:25,955 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:37:25,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 11:37:26,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:26,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:37:26,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:37:26,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:37:26,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:37:26,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040469908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:37:26,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:37:26,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-20 11:37:26,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837991073] [2022-11-20 11:37:26,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:37:26,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:37:26,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:37:26,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:37:26,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:37:26,140 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 492 out of 572 [2022-11-20 11:37:26,142 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 506 transitions, 1052 flow. Second operand has 3 states, 3 states have (on average 493.0) internal successors, (1479), 3 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:26,142 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:37:26,142 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 492 of 572 [2022-11-20 11:37:26,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:37:26,581 INFO L130 PetriNetUnfolder]: 23/999 cut-off events. [2022-11-20 11:37:26,581 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-11-20 11:37:26,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1070 conditions, 999 events. 23/999 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 6119 event pairs, 1 based on Foata normal form. 0/911 useless extension candidates. Maximal degree in co-relation 1062. Up to 30 conditions per place. [2022-11-20 11:37:26,622 INFO L137 encePairwiseOnDemand]: 569/572 looper letters, 15 selfloop transitions, 2 changer transitions 0/510 dead transitions. [2022-11-20 11:37:26,622 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 510 transitions, 1094 flow [2022-11-20 11:37:26,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:37:26,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:37:26,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1494 transitions. [2022-11-20 11:37:26,625 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8706293706293706 [2022-11-20 11:37:26,625 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1494 transitions. [2022-11-20 11:37:26,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1494 transitions. [2022-11-20 11:37:26,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:37:26,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1494 transitions. [2022-11-20 11:37:26,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 498.0) internal successors, (1494), 3 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:26,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 572.0) internal successors, (2288), 4 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:26,632 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 572.0) internal successors, (2288), 4 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:26,633 INFO L175 Difference]: Start difference. First operand has 503 places, 506 transitions, 1052 flow. Second operand 3 states and 1494 transitions. [2022-11-20 11:37:26,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 510 transitions, 1094 flow [2022-11-20 11:37:26,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 510 transitions, 1092 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:37:26,644 INFO L231 Difference]: Finished difference. Result has 505 places, 507 transitions, 1062 flow [2022-11-20 11:37:26,645 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=572, PETRI_DIFFERENCE_MINUEND_FLOW=1050, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1062, PETRI_PLACES=505, PETRI_TRANSITIONS=507} [2022-11-20 11:37:26,647 INFO L288 CegarLoopForPetriNet]: 504 programPoint places, 1 predicate places. [2022-11-20 11:37:26,647 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 507 transitions, 1062 flow [2022-11-20 11:37:26,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 493.0) internal successors, (1479), 3 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:26,648 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:37:26,648 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:37:26,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 11:37:26,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:37:26,855 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-11-20 11:37:26,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:26,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1422323447, now seen corresponding path program 1 times [2022-11-20 11:37:26,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:37:26,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323039330] [2022-11-20 11:37:26,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:26,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:37:26,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:26,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:37:26,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:37:26,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323039330] [2022-11-20 11:37:26,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323039330] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:37:26,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309562004] [2022-11-20 11:37:26,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:26,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:37:26,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:37:26,956 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:37:26,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 11:37:27,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:27,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:37:27,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:37:27,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:37:27,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:37:27,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309562004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:37:27,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:37:27,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-20 11:37:27,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636408304] [2022-11-20 11:37:27,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:37:27,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:37:27,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:37:27,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:37:27,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:37:27,148 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 491 out of 572 [2022-11-20 11:37:27,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 507 transitions, 1062 flow. Second operand has 3 states, 3 states have (on average 492.6666666666667) internal successors, (1478), 3 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:27,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:37:27,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 491 of 572 [2022-11-20 11:37:27,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:37:27,764 INFO L130 PetriNetUnfolder]: 26/1251 cut-off events. [2022-11-20 11:37:27,764 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-11-20 11:37:27,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1343 conditions, 1251 events. 26/1251 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 7269 event pairs, 1 based on Foata normal form. 0/1145 useless extension candidates. Maximal degree in co-relation 1334. Up to 36 conditions per place. [2022-11-20 11:37:27,815 INFO L137 encePairwiseOnDemand]: 569/572 looper letters, 16 selfloop transitions, 2 changer transitions 0/511 dead transitions. [2022-11-20 11:37:27,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 511 transitions, 1106 flow [2022-11-20 11:37:27,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:37:27,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:37:27,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1492 transitions. [2022-11-20 11:37:27,819 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8694638694638694 [2022-11-20 11:37:27,819 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1492 transitions. [2022-11-20 11:37:27,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1492 transitions. [2022-11-20 11:37:27,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:37:27,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1492 transitions. [2022-11-20 11:37:27,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 497.3333333333333) internal successors, (1492), 3 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:27,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 572.0) internal successors, (2288), 4 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:27,827 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 572.0) internal successors, (2288), 4 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:27,827 INFO L175 Difference]: Start difference. First operand has 505 places, 507 transitions, 1062 flow. Second operand 3 states and 1492 transitions. [2022-11-20 11:37:27,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 511 transitions, 1106 flow [2022-11-20 11:37:27,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 511 transitions, 1104 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:37:27,839 INFO L231 Difference]: Finished difference. Result has 507 places, 508 transitions, 1072 flow [2022-11-20 11:37:27,840 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=572, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1072, PETRI_PLACES=507, PETRI_TRANSITIONS=508} [2022-11-20 11:37:27,841 INFO L288 CegarLoopForPetriNet]: 504 programPoint places, 3 predicate places. [2022-11-20 11:37:27,841 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 508 transitions, 1072 flow [2022-11-20 11:37:27,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 492.6666666666667) internal successors, (1478), 3 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:27,842 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:37:27,842 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:37:27,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 11:37:28,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 11:37:28,050 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-11-20 11:37:28,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:28,051 INFO L85 PathProgramCache]: Analyzing trace with hash 775634102, now seen corresponding path program 1 times [2022-11-20 11:37:28,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:37:28,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011442021] [2022-11-20 11:37:28,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:28,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:37:28,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:28,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:37:28,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:37:28,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011442021] [2022-11-20 11:37:28,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011442021] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:37:28,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864644943] [2022-11-20 11:37:28,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:28,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:37:28,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:37:28,136 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:37:28,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 11:37:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:28,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:37:28,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:37:28,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:37:28,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:37:28,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:37:28,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864644943] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:37:28,380 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:37:28,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-20 11:37:28,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117665719] [2022-11-20 11:37:28,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:37:28,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:37:28,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:37:28,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:37:28,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:37:28,387 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 491 out of 572 [2022-11-20 11:37:28,392 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 508 transitions, 1072 flow. Second operand has 10 states, 10 states have (on average 493.1) internal successors, (4931), 10 states have internal predecessors, (4931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:28,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:37:28,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 491 of 572 [2022-11-20 11:37:28,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:37:29,052 INFO L130 PetriNetUnfolder]: 26/1258 cut-off events. [2022-11-20 11:37:29,053 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2022-11-20 11:37:29,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1353 conditions, 1258 events. 26/1258 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 7272 event pairs, 1 based on Foata normal form. 2/1157 useless extension candidates. Maximal degree in co-relation 1343. Up to 20 conditions per place. [2022-11-20 11:37:29,108 INFO L137 encePairwiseOnDemand]: 566/572 looper letters, 16 selfloop transitions, 9 changer transitions 0/518 dead transitions. [2022-11-20 11:37:29,109 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 518 transitions, 1144 flow [2022-11-20 11:37:29,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:37:29,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:37:29,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4446 transitions. [2022-11-20 11:37:29,115 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8636363636363636 [2022-11-20 11:37:29,117 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4446 transitions. [2022-11-20 11:37:29,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4446 transitions. [2022-11-20 11:37:29,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:37:29,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4446 transitions. [2022-11-20 11:37:29,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 494.0) internal successors, (4446), 9 states have internal predecessors, (4446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:29,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 572.0) internal successors, (5720), 10 states have internal predecessors, (5720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:29,134 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 572.0) internal successors, (5720), 10 states have internal predecessors, (5720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:29,135 INFO L175 Difference]: Start difference. First operand has 507 places, 508 transitions, 1072 flow. Second operand 9 states and 4446 transitions. [2022-11-20 11:37:29,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 518 transitions, 1144 flow [2022-11-20 11:37:29,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 518 transitions, 1142 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:37:29,147 INFO L231 Difference]: Finished difference. Result has 517 places, 514 transitions, 1120 flow [2022-11-20 11:37:29,148 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=572, PETRI_DIFFERENCE_MINUEND_FLOW=1070, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1120, PETRI_PLACES=517, PETRI_TRANSITIONS=514} [2022-11-20 11:37:29,148 INFO L288 CegarLoopForPetriNet]: 504 programPoint places, 13 predicate places. [2022-11-20 11:37:29,149 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 514 transitions, 1120 flow [2022-11-20 11:37:29,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 493.1) internal successors, (4931), 10 states have internal predecessors, (4931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:29,150 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:37:29,150 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:37:29,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 11:37:29,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 11:37:29,358 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-11-20 11:37:29,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:29,358 INFO L85 PathProgramCache]: Analyzing trace with hash 554692374, now seen corresponding path program 2 times [2022-11-20 11:37:29,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:37:29,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341099829] [2022-11-20 11:37:29,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:29,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:37:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:37:29,527 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:37:29,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:37:29,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341099829] [2022-11-20 11:37:29,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341099829] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:37:29,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272724412] [2022-11-20 11:37:29,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:37:29,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:37:29,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:37:29,530 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:37:29,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_362ea289-50cd-49cb-b0a4-19f4153390a5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 11:37:29,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:37:29,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:37:29,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:37:29,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:37:29,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 11:37:29,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 11:37:29,837 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:37:29,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-20 11:37:29,923 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:37:29,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-20 11:37:29,981 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 11:37:29,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:37:29,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272724412] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:37:29,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:37:29,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2022-11-20 11:37:29,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715642771] [2022-11-20 11:37:29,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:37:29,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:37:29,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:37:29,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:37:29,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:37:30,012 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 334 out of 572 [2022-11-20 11:37:30,014 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 514 transitions, 1120 flow. Second operand has 6 states, 6 states have (on average 335.6666666666667) internal successors, (2014), 6 states have internal predecessors, (2014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:37:30,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:37:30,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 334 of 572 [2022-11-20 11:37:30,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand