./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9154148-c3b7-4b8a-bc3b-5fbcddb61e95/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9154148-c3b7-4b8a-bc3b-5fbcddb61e95/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9154148-c3b7-4b8a-bc3b-5fbcddb61e95/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9154148-c3b7-4b8a-bc3b-5fbcddb61e95/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9154148-c3b7-4b8a-bc3b-5fbcddb61e95/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9154148-c3b7-4b8a-bc3b-5fbcddb61e95/bin/uautomizer-ZsLfNo2U6R --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 54b86d528cae3f36fe49030118864df9a90bfa303271cb05b13ff89a15d513aa --- 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-38b53e6 [2022-11-25 16:46:03,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 16:46:03,430 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 16:46:03,451 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 16:46:03,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 16:46:03,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 16:46:03,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 16:46:03,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 16:46:03,457 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 16:46:03,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 16:46:03,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 16:46:03,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 16:46:03,461 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 16:46:03,463 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 16:46:03,464 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 16:46:03,466 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 16:46:03,467 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 16:46:03,468 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 16:46:03,470 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 16:46:03,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 16:46:03,473 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 16:46:03,475 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 16:46:03,476 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 16:46:03,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 16:46:03,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 16:46:03,482 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 16:46:03,482 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 16:46:03,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 16:46:03,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 16:46:03,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 16:46:03,486 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 16:46:03,487 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 16:46:03,488 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 16:46:03,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 16:46:03,490 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 16:46:03,490 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 16:46:03,491 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 16:46:03,491 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 16:46:03,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 16:46:03,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 16:46:03,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 16:46:03,495 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9154148-c3b7-4b8a-bc3b-5fbcddb61e95/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-25 16:46:03,518 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 16:46:03,519 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 16:46:03,519 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 16:46:03,520 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 16:46:03,520 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 16:46:03,521 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 16:46:03,522 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 16:46:03,522 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 16:46:03,522 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 16:46:03,522 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 16:46:03,523 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 16:46:03,523 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 16:46:03,523 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 16:46:03,523 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 16:46:03,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 16:46:03,524 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 16:46:03,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 16:46:03,524 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 16:46:03,525 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-25 16:46:03,525 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 16:46:03,525 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 16:46:03,525 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 16:46:03,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 16:46:03,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 16:46:03,526 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 16:46:03,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 16:46:03,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:46:03,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 16:46:03,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 16:46:03,527 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 16:46:03,527 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 16:46:03,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 16:46:03,528 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 16:46:03,528 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 16:46:03,528 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 16:46:03,529 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 16:46:03,529 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_a9154148-c3b7-4b8a-bc3b-5fbcddb61e95/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9154148-c3b7-4b8a-bc3b-5fbcddb61e95/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54b86d528cae3f36fe49030118864df9a90bfa303271cb05b13ff89a15d513aa [2022-11-25 16:46:03,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 16:46:03,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 16:46:03,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 16:46:03,837 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 16:46:03,838 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 16:46:03,840 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9154148-c3b7-4b8a-bc3b-5fbcddb61e95/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i [2022-11-25 16:46:07,390 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 16:46:07,798 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 16:46:07,799 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9154148-c3b7-4b8a-bc3b-5fbcddb61e95/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i [2022-11-25 16:46:07,829 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9154148-c3b7-4b8a-bc3b-5fbcddb61e95/bin/uautomizer-ZsLfNo2U6R/data/6ab18467c/62968aa811f84ea6b2b8f6a6424a5fcf/FLAGbc4eb056c [2022-11-25 16:46:07,848 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9154148-c3b7-4b8a-bc3b-5fbcddb61e95/bin/uautomizer-ZsLfNo2U6R/data/6ab18467c/62968aa811f84ea6b2b8f6a6424a5fcf [2022-11-25 16:46:07,851 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 16:46:07,853 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 16:46:07,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 16:46:07,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 16:46:07,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 16:46:07,868 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:46:07" (1/1) ... [2022-11-25 16:46:07,873 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fb24718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:07, skipping insertion in model container [2022-11-25 16:46:07,873 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:46:07" (1/1) ... [2022-11-25 16:46:07,883 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 16:46:07,981 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 16:46:08,640 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_a9154148-c3b7-4b8a-bc3b-5fbcddb61e95/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i[47038,47051] [2022-11-25 16:46:08,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:46:08,856 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 16:46:08,932 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_a9154148-c3b7-4b8a-bc3b-5fbcddb61e95/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i[47038,47051] [2022-11-25 16:46:08,975 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:46:09,089 INFO L208 MainTranslator]: Completed translation [2022-11-25 16:46:09,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:09 WrapperNode [2022-11-25 16:46:09,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 16:46:09,090 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 16:46:09,091 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 16:46:09,091 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 16:46:09,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:09" (1/1) ... [2022-11-25 16:46:09,129 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:09" (1/1) ... [2022-11-25 16:46:09,176 INFO L138 Inliner]: procedures = 278, calls = 60, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 337 [2022-11-25 16:46:09,176 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 16:46:09,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 16:46:09,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 16:46:09,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 16:46:09,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:09" (1/1) ... [2022-11-25 16:46:09,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:09" (1/1) ... [2022-11-25 16:46:09,198 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:09" (1/1) ... [2022-11-25 16:46:09,198 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:09" (1/1) ... [2022-11-25 16:46:09,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:09" (1/1) ... [2022-11-25 16:46:09,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:09" (1/1) ... [2022-11-25 16:46:09,237 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:09" (1/1) ... [2022-11-25 16:46:09,240 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:09" (1/1) ... [2022-11-25 16:46:09,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 16:46:09,246 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 16:46:09,247 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 16:46:09,247 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 16:46:09,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:09" (1/1) ... [2022-11-25 16:46:09,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:46:09,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9154148-c3b7-4b8a-bc3b-5fbcddb61e95/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:46:09,289 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9154148-c3b7-4b8a-bc3b-5fbcddb61e95/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 16:46:09,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9154148-c3b7-4b8a-bc3b-5fbcddb61e95/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 16:46:09,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 16:46:09,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 16:46:09,342 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-11-25 16:46:09,342 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-11-25 16:46:09,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 16:46:09,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 16:46:09,343 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-25 16:46:09,343 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-25 16:46:09,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 16:46:09,343 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 16:46:09,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 16:46:09,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 16:46:09,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 16:46:09,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 16:46:09,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 16:46:09,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 16:46:09,347 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 16:46:09,535 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 16:46:09,537 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 16:46:10,413 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 16:46:10,430 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 16:46:10,437 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-25 16:46:10,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:46:10 BoogieIcfgContainer [2022-11-25 16:46:10,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 16:46:10,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 16:46:10,449 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 16:46:10,453 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 16:46:10,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 04:46:07" (1/3) ... [2022-11-25 16:46:10,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@706b2e82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:46:10, skipping insertion in model container [2022-11-25 16:46:10,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:09" (2/3) ... [2022-11-25 16:46:10,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@706b2e82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:46:10, skipping insertion in model container [2022-11-25 16:46:10,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:46:10" (3/3) ... [2022-11-25 16:46:10,463 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_87-lists_racefree.i [2022-11-25 16:46:10,474 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 16:46:10,488 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 16:46:10,488 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2022-11-25 16:46:10,489 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 16:46:10,753 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-25 16:46:10,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 349 places, 369 transitions, 760 flow [2022-11-25 16:46:11,257 INFO L130 PetriNetUnfolder]: 54/658 cut-off events. [2022-11-25 16:46:11,257 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2022-11-25 16:46:11,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 678 conditions, 658 events. 54/658 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3053 event pairs, 0 based on Foata normal form. 0/563 useless extension candidates. Maximal degree in co-relation 329. Up to 8 conditions per place. [2022-11-25 16:46:11,279 INFO L82 GeneralOperation]: Start removeDead. Operand has 349 places, 369 transitions, 760 flow [2022-11-25 16:46:11,290 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 349 places, 369 transitions, 760 flow [2022-11-25 16:46:11,295 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 16:46:11,319 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 349 places, 369 transitions, 760 flow [2022-11-25 16:46:11,327 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 349 places, 369 transitions, 760 flow [2022-11-25 16:46:11,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 349 places, 369 transitions, 760 flow [2022-11-25 16:46:11,520 INFO L130 PetriNetUnfolder]: 54/658 cut-off events. [2022-11-25 16:46:11,520 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2022-11-25 16:46:11,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 678 conditions, 658 events. 54/658 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3053 event pairs, 0 based on Foata normal form. 0/563 useless extension candidates. Maximal degree in co-relation 329. Up to 8 conditions per place. [2022-11-25 16:46:11,612 INFO L119 LiptonReduction]: Number of co-enabled transitions 47560 [2022-11-25 16:47:21,651 WARN L233 SmtUtils]: Spent 9.29s on a formula simplification that was a NOOP. DAG size: 140 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 16:47:30,754 WARN L233 SmtUtils]: Spent 9.10s on a formula simplification that was a NOOP. DAG size: 134 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 16:47:36,854 WARN L233 SmtUtils]: Spent 6.10s on a formula simplification that was a NOOP. DAG size: 140 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 16:47:42,492 WARN L233 SmtUtils]: Spent 5.64s on a formula simplification that was a NOOP. DAG size: 134 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 16:47:43,344 INFO L134 LiptonReduction]: Checked pairs total: 419800 [2022-11-25 16:47:43,345 INFO L136 LiptonReduction]: Total number of compositions: 269 [2022-11-25 16:47:43,365 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:47:43,371 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;@42913284, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:47:43,371 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2022-11-25 16:47:43,375 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2022-11-25 16:47:43,376 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 16:47:43,376 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:47:43,377 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 16:47:43,377 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2022-11-25 16:47:43,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:47:43,384 INFO L85 PathProgramCache]: Analyzing trace with hash 42906, now seen corresponding path program 1 times [2022-11-25 16:47:43,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:47:43,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559770551] [2022-11-25 16:47:43,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:47:43,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:47:43,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:43,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:47:43,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:47:43,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559770551] [2022-11-25 16:47:43,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559770551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:47:43,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:47:43,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:47:43,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484710316] [2022-11-25 16:47:43,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:47:43,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 16:47:43,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:47:43,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 16:47:43,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 16:47:43,647 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 345 out of 638 [2022-11-25 16:47:43,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 167 transitions, 356 flow. Second operand has 2 states, 2 states have (on average 346.0) internal successors, (692), 2 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:47:43,652 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:47:43,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 345 of 638 [2022-11-25 16:47:43,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:47:48,164 INFO L130 PetriNetUnfolder]: 7421/19341 cut-off events. [2022-11-25 16:47:48,165 INFO L131 PetriNetUnfolder]: For 146/146 co-relation queries the response was YES. [2022-11-25 16:47:48,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30909 conditions, 19341 events. 7421/19341 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 186446 event pairs, 7006 based on Foata normal form. 656/17608 useless extension candidates. Maximal degree in co-relation 29225. Up to 11428 conditions per place. [2022-11-25 16:47:48,350 INFO L137 encePairwiseOnDemand]: 624/638 looper letters, 62 selfloop transitions, 0 changer transitions 0/153 dead transitions. [2022-11-25 16:47:48,351 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 153 transitions, 452 flow [2022-11-25 16:47:48,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 16:47:48,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 16:47:48,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 766 transitions. [2022-11-25 16:47:48,381 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6003134796238244 [2022-11-25 16:47:48,382 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 766 transitions. [2022-11-25 16:47:48,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 766 transitions. [2022-11-25 16:47:48,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:47:48,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 766 transitions. [2022-11-25 16:47:48,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 383.0) internal successors, (766), 2 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:47:48,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 638.0) internal successors, (1914), 3 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:47:48,420 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 638.0) internal successors, (1914), 3 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:47:48,423 INFO L175 Difference]: Start difference. First operand has 154 places, 167 transitions, 356 flow. Second operand 2 states and 766 transitions. [2022-11-25 16:47:48,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 153 transitions, 452 flow [2022-11-25 16:47:48,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 153 transitions, 452 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 16:47:48,438 INFO L231 Difference]: Finished difference. Result has 152 places, 153 transitions, 328 flow [2022-11-25 16:47:48,441 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=638, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=328, PETRI_PLACES=152, PETRI_TRANSITIONS=153} [2022-11-25 16:47:48,445 INFO L288 CegarLoopForPetriNet]: 154 programPoint places, -2 predicate places. [2022-11-25 16:47:48,445 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 153 transitions, 328 flow [2022-11-25 16:47:48,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 346.0) internal successors, (692), 2 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:47:48,447 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:47:48,447 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2022-11-25 16:47:48,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 16:47:48,448 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2022-11-25 16:47:48,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:47:48,448 INFO L85 PathProgramCache]: Analyzing trace with hash -191622831, now seen corresponding path program 1 times [2022-11-25 16:47:48,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:47:48,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783353164] [2022-11-25 16:47:48,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:47:48,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:47:48,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:48,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 16:47:48,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:47:48,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783353164] [2022-11-25 16:47:48,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783353164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:47:48,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:47:48,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:47:48,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031465250] [2022-11-25 16:47:48,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:47:48,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:47:48,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:47:48,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:47:48,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:47:48,642 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 341 out of 638 [2022-11-25 16:47:48,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 153 transitions, 328 flow. Second operand has 3 states, 3 states have (on average 342.6666666666667) internal successors, (1028), 3 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:47:48,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:47:48,645 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 341 of 638 [2022-11-25 16:47:48,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:47:52,346 INFO L130 PetriNetUnfolder]: 7421/19342 cut-off events. [2022-11-25 16:47:52,346 INFO L131 PetriNetUnfolder]: For 146/146 co-relation queries the response was YES. [2022-11-25 16:47:52,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30912 conditions, 19342 events. 7421/19342 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 186427 event pairs, 7006 based on Foata normal form. 0/16953 useless extension candidates. Maximal degree in co-relation 30907. Up to 11428 conditions per place. [2022-11-25 16:47:52,488 INFO L137 encePairwiseOnDemand]: 635/638 looper letters, 61 selfloop transitions, 2 changer transitions 0/154 dead transitions. [2022-11-25 16:47:52,488 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 154 transitions, 456 flow [2022-11-25 16:47:52,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:47:52,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:47:52,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1087 transitions. [2022-11-25 16:47:52,495 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5679205851619644 [2022-11-25 16:47:52,496 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1087 transitions. [2022-11-25 16:47:52,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1087 transitions. [2022-11-25 16:47:52,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:47:52,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1087 transitions. [2022-11-25 16:47:52,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 362.3333333333333) internal successors, (1087), 3 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:47:52,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 638.0) internal successors, (2552), 4 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:47:52,510 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 638.0) internal successors, (2552), 4 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:47:52,510 INFO L175 Difference]: Start difference. First operand has 152 places, 153 transitions, 328 flow. Second operand 3 states and 1087 transitions. [2022-11-25 16:47:52,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 154 transitions, 456 flow [2022-11-25 16:47:52,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 154 transitions, 456 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 16:47:52,522 INFO L231 Difference]: Finished difference. Result has 155 places, 154 transitions, 340 flow [2022-11-25 16:47:52,523 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=638, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=340, PETRI_PLACES=155, PETRI_TRANSITIONS=154} [2022-11-25 16:47:52,523 INFO L288 CegarLoopForPetriNet]: 154 programPoint places, 1 predicate places. [2022-11-25 16:47:52,524 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 154 transitions, 340 flow [2022-11-25 16:47:52,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 342.6666666666667) internal successors, (1028), 3 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:47:52,526 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:47:52,526 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-25 16:47:52,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 16:47:52,529 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2022-11-25 16:47:52,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:47:52,534 INFO L85 PathProgramCache]: Analyzing trace with hash -290125192, now seen corresponding path program 1 times [2022-11-25 16:47:52,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:47:52,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233868042] [2022-11-25 16:47:52,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:47:52,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:47:52,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:52,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 16:47:52,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:47:52,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233868042] [2022-11-25 16:47:52,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233868042] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:47:52,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429870167] [2022-11-25 16:47:52,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:47:52,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:47:52,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9154148-c3b7-4b8a-bc3b-5fbcddb61e95/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:47:52,813 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9154148-c3b7-4b8a-bc3b-5fbcddb61e95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:47:52,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9154148-c3b7-4b8a-bc3b-5fbcddb61e95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 16:47:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:53,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 16:47:53,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:47:53,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 16:47:53,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:47:53,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 16:47:53,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429870167] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:47:53,116 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:47:53,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-25 16:47:53,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262215909] [2022-11-25 16:47:53,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:47:53,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 16:47:53,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:47:53,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 16:47:53,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 16:47:53,258 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 638 [2022-11-25 16:47:53,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 154 transitions, 340 flow. Second operand has 7 states, 7 states have (on average 341.57142857142856) internal successors, (2391), 7 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:47:53,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:47:53,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 638 [2022-11-25 16:47:53,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:47:57,350 INFO L130 PetriNetUnfolder]: 7421/19345 cut-off events. [2022-11-25 16:47:57,351 INFO L131 PetriNetUnfolder]: For 146/146 co-relation queries the response was YES. [2022-11-25 16:47:57,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30928 conditions, 19345 events. 7421/19345 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 186430 event pairs, 7006 based on Foata normal form. 0/16956 useless extension candidates. Maximal degree in co-relation 30921. Up to 11428 conditions per place. [2022-11-25 16:47:57,472 INFO L137 encePairwiseOnDemand]: 635/638 looper letters, 61 selfloop transitions, 5 changer transitions 0/157 dead transitions. [2022-11-25 16:47:57,472 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 157 transitions, 484 flow [2022-11-25 16:47:57,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 16:47:57,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 16:47:57,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2109 transitions. [2022-11-25 16:47:57,491 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5509404388714734 [2022-11-25 16:47:57,491 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2109 transitions. [2022-11-25 16:47:57,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2109 transitions. [2022-11-25 16:47:57,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:47:57,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2109 transitions. [2022-11-25 16:47:57,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 351.5) internal successors, (2109), 6 states have internal predecessors, (2109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:47:57,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 638.0) internal successors, (4466), 7 states have internal predecessors, (4466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:47:57,512 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 638.0) internal successors, (4466), 7 states have internal predecessors, (4466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:47:57,512 INFO L175 Difference]: Start difference. First operand has 155 places, 154 transitions, 340 flow. Second operand 6 states and 2109 transitions. [2022-11-25 16:47:57,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 157 transitions, 484 flow [2022-11-25 16:47:57,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 157 transitions, 480 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 16:47:57,528 INFO L231 Difference]: Finished difference. Result has 162 places, 157 transitions, 372 flow [2022-11-25 16:47:57,529 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=638, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=372, PETRI_PLACES=162, PETRI_TRANSITIONS=157} [2022-11-25 16:47:57,531 INFO L288 CegarLoopForPetriNet]: 154 programPoint places, 8 predicate places. [2022-11-25 16:47:57,531 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 157 transitions, 372 flow [2022-11-25 16:47:57,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 341.57142857142856) internal successors, (2391), 7 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:47:57,533 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:47:57,534 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2022-11-25 16:47:57,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9154148-c3b7-4b8a-bc3b-5fbcddb61e95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 16:47:57,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9154148-c3b7-4b8a-bc3b-5fbcddb61e95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:47:57,748 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2022-11-25 16:47:57,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:47:57,749 INFO L85 PathProgramCache]: Analyzing trace with hash -241392879, now seen corresponding path program 2 times [2022-11-25 16:47:57,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:47:57,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135552334] [2022-11-25 16:47:57,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:47:57,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:47:57,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:58,191 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 16:47:58,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:47:58,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135552334] [2022-11-25 16:47:58,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135552334] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:47:58,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408270718] [2022-11-25 16:47:58,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 16:47:58,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:47:58,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9154148-c3b7-4b8a-bc3b-5fbcddb61e95/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:47:58,195 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9154148-c3b7-4b8a-bc3b-5fbcddb61e95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:47:58,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9154148-c3b7-4b8a-bc3b-5fbcddb61e95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 16:47:58,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 16:47:58,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 16:47:58,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 16:47:58,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:47:58,508 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 16:47:58,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:47:58,605 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 16:47:58,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408270718] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:47:58,605 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:47:58,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-25 16:47:58,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803157868] [2022-11-25 16:47:58,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:47:58,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 16:47:58,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:47:58,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 16:47:58,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-25 16:47:58,840 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 638 [2022-11-25 16:47:58,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 157 transitions, 372 flow. Second operand has 13 states, 13 states have (on average 341.3076923076923) internal successors, (4437), 13 states have internal predecessors, (4437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:47:58,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:47:58,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 638 [2022-11-25 16:47:58,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:48:02,920 INFO L130 PetriNetUnfolder]: 7421/19351 cut-off events. [2022-11-25 16:48:02,921 INFO L131 PetriNetUnfolder]: For 166/166 co-relation queries the response was YES. [2022-11-25 16:48:02,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30965 conditions, 19351 events. 7421/19351 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 186226 event pairs, 7006 based on Foata normal form. 6/16969 useless extension candidates. Maximal degree in co-relation 30955. Up to 11428 conditions per place. [2022-11-25 16:48:03,085 INFO L137 encePairwiseOnDemand]: 635/638 looper letters, 61 selfloop transitions, 11 changer transitions 0/163 dead transitions. [2022-11-25 16:48:03,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 163 transitions, 552 flow [2022-11-25 16:48:03,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 16:48:03,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 16:48:03,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4158 transitions. [2022-11-25 16:48:03,101 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5431034482758621 [2022-11-25 16:48:03,102 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4158 transitions. [2022-11-25 16:48:03,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4158 transitions. [2022-11-25 16:48:03,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:48:03,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4158 transitions. [2022-11-25 16:48:03,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 346.5) internal successors, (4158), 12 states have internal predecessors, (4158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:48:03,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 638.0) internal successors, (8294), 13 states have internal predecessors, (8294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:48:03,147 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 638.0) internal successors, (8294), 13 states have internal predecessors, (8294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:48:03,148 INFO L175 Difference]: Start difference. First operand has 162 places, 157 transitions, 372 flow. Second operand 12 states and 4158 transitions. [2022-11-25 16:48:03,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 163 transitions, 552 flow [2022-11-25 16:48:03,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 163 transitions, 538 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-25 16:48:03,156 INFO L231 Difference]: Finished difference. Result has 178 places, 163 transitions, 442 flow [2022-11-25 16:48:03,157 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=638, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=442, PETRI_PLACES=178, PETRI_TRANSITIONS=163} [2022-11-25 16:48:03,159 INFO L288 CegarLoopForPetriNet]: 154 programPoint places, 24 predicate places. [2022-11-25 16:48:03,159 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 163 transitions, 442 flow [2022-11-25 16:48:03,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 341.3076923076923) internal successors, (4437), 13 states have internal predecessors, (4437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:48:03,162 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:48:03,163 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2022-11-25 16:48:03,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9154148-c3b7-4b8a-bc3b-5fbcddb61e95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 16:48:03,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9154148-c3b7-4b8a-bc3b-5fbcddb61e95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-25 16:48:03,371 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2022-11-25 16:48:03,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:48:03,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1092786609, now seen corresponding path program 3 times [2022-11-25 16:48:03,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:48:03,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178267636] [2022-11-25 16:48:03,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:48:03,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:48:03,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:48:04,505 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 16:48:04,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:48:04,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178267636] [2022-11-25 16:48:04,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178267636] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:48:04,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966261698] [2022-11-25 16:48:04,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 16:48:04,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:48:04,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9154148-c3b7-4b8a-bc3b-5fbcddb61e95/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:48:04,519 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9154148-c3b7-4b8a-bc3b-5fbcddb61e95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:48:04,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9154148-c3b7-4b8a-bc3b-5fbcddb61e95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process