./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 2329fc70 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_6c70f31e-74cc-4b64-833a-54b557be20ae/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70f31e-74cc-4b64-833a-54b557be20ae/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70f31e-74cc-4b64-833a-54b557be20ae/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70f31e-74cc-4b64-833a-54b557be20ae/bin/uautomizer-uyxdKDjOR8/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_6c70f31e-74cc-4b64-833a-54b557be20ae/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70f31e-74cc-4b64-833a-54b557be20ae/bin/uautomizer-uyxdKDjOR8 --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-2329fc7 [2022-12-13 10:55:00,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 10:55:00,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 10:55:00,493 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 10:55:00,493 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 10:55:00,494 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 10:55:00,495 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 10:55:00,496 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 10:55:00,497 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 10:55:00,498 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 10:55:00,498 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 10:55:00,499 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 10:55:00,499 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 10:55:00,500 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 10:55:00,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 10:55:00,502 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 10:55:00,502 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 10:55:00,503 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 10:55:00,504 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 10:55:00,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 10:55:00,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 10:55:00,508 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 10:55:00,509 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 10:55:00,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 10:55:00,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 10:55:00,514 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 10:55:00,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 10:55:00,515 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 10:55:00,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 10:55:00,516 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 10:55:00,517 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 10:55:00,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 10:55:00,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 10:55:00,519 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 10:55:00,520 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 10:55:00,520 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 10:55:00,521 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 10:55:00,521 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 10:55:00,521 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 10:55:00,522 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 10:55:00,523 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 10:55:00,524 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70f31e-74cc-4b64-833a-54b557be20ae/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-12-13 10:55:00,548 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 10:55:00,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 10:55:00,549 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 10:55:00,549 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 10:55:00,550 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 10:55:00,550 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 10:55:00,551 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 10:55:00,551 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 10:55:00,551 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 10:55:00,551 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 10:55:00,551 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 10:55:00,552 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 10:55:00,552 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 10:55:00,552 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 10:55:00,552 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 10:55:00,552 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 10:55:00,552 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 10:55:00,553 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 10:55:00,553 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-13 10:55:00,553 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 10:55:00,553 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 10:55:00,553 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 10:55:00,553 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 10:55:00,554 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 10:55:00,554 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 10:55:00,554 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 10:55:00,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 10:55:00,554 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 10:55:00,554 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 10:55:00,555 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 10:55:00,555 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 10:55:00,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 10:55:00,555 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 10:55:00,559 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 10:55:00,559 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 10:55:00,559 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 10:55:00,559 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 10:55:00,559 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_6c70f31e-74cc-4b64-833a-54b557be20ae/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70f31e-74cc-4b64-833a-54b557be20ae/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 [2022-12-13 10:55:00,743 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 10:55:00,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 10:55:00,762 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 10:55:00,763 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 10:55:00,763 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 10:55:00,765 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70f31e-74cc-4b64-833a-54b557be20ae/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2022-12-13 10:55:03,368 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 10:55:03,601 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 10:55:03,601 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70f31e-74cc-4b64-833a-54b557be20ae/sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2022-12-13 10:55:03,613 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70f31e-74cc-4b64-833a-54b557be20ae/bin/uautomizer-uyxdKDjOR8/data/9b7afb903/68e1bd690a034618bb54b2619a6d04f0/FLAG7694e4bd7 [2022-12-13 10:55:03,625 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70f31e-74cc-4b64-833a-54b557be20ae/bin/uautomizer-uyxdKDjOR8/data/9b7afb903/68e1bd690a034618bb54b2619a6d04f0 [2022-12-13 10:55:03,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 10:55:03,629 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 10:55:03,630 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 10:55:03,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 10:55:03,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 10:55:03,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:55:03" (1/1) ... [2022-12-13 10:55:03,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@425e783b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:55:03, skipping insertion in model container [2022-12-13 10:55:03,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:55:03" (1/1) ... [2022-12-13 10:55:03,641 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 10:55:03,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 10:55:04,016 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_6c70f31e-74cc-4b64-833a-54b557be20ae/sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i[41323,41336] [2022-12-13 10:55:04,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 10:55:04,062 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 10:55:04,098 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_6c70f31e-74cc-4b64-833a-54b557be20ae/sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i[41323,41336] [2022-12-13 10:55:04,118 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 10:55:04,159 INFO L208 MainTranslator]: Completed translation [2022-12-13 10:55:04,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:55:04 WrapperNode [2022-12-13 10:55:04,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 10:55:04,160 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 10:55:04,160 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 10:55:04,160 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 10:55:04,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:55:04" (1/1) ... [2022-12-13 10:55:04,183 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:55:04" (1/1) ... [2022-12-13 10:55:04,215 INFO L138 Inliner]: procedures = 271, calls = 41, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 339 [2022-12-13 10:55:04,216 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 10:55:04,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 10:55:04,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 10:55:04,217 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 10:55:04,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:55:04" (1/1) ... [2022-12-13 10:55:04,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:55:04" (1/1) ... [2022-12-13 10:55:04,231 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:55:04" (1/1) ... [2022-12-13 10:55:04,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:55:04" (1/1) ... [2022-12-13 10:55:04,252 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:55:04" (1/1) ... [2022-12-13 10:55:04,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:55:04" (1/1) ... [2022-12-13 10:55:04,261 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:55:04" (1/1) ... [2022-12-13 10:55:04,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:55:04" (1/1) ... [2022-12-13 10:55:04,267 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 10:55:04,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 10:55:04,268 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 10:55:04,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 10:55:04,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:55:04" (1/1) ... [2022-12-13 10:55:04,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 10:55:04,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70f31e-74cc-4b64-833a-54b557be20ae/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 10:55:04,296 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70f31e-74cc-4b64-833a-54b557be20ae/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 10:55:04,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70f31e-74cc-4b64-833a-54b557be20ae/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 10:55:04,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 10:55:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 10:55:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 10:55:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 10:55:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 10:55:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 10:55:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 10:55:04,323 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 10:55:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 10:55:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 10:55:04,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 10:55:04,325 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 10:55:04,434 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 10:55:04,436 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 10:55:04,821 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 10:55:04,830 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 10:55:04,830 INFO L300 CfgBuilder]: Removed 35 assume(true) statements. [2022-12-13 10:55:04,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:55:04 BoogieIcfgContainer [2022-12-13 10:55:04,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 10:55:04,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 10:55:04,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 10:55:04,836 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 10:55:04,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 10:55:03" (1/3) ... [2022-12-13 10:55:04,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46befcac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:55:04, skipping insertion in model container [2022-12-13 10:55:04,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:55:04" (2/3) ... [2022-12-13 10:55:04,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46befcac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:55:04, skipping insertion in model container [2022-12-13 10:55:04,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:55:04" (3/3) ... [2022-12-13 10:55:04,838 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_73-funloop_hard_racefree.i [2022-12-13 10:55:04,845 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 10:55:04,852 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 10:55:04,852 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-12-13 10:55:04,852 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 10:55:04,904 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 10:55:04,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 318 places, 360 transitions, 728 flow [2022-12-13 10:55:05,063 INFO L130 PetriNetUnfolder]: 73/571 cut-off events. [2022-12-13 10:55:05,063 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 10:55:05,073 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 3109 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. [2022-12-13 10:55:05,073 INFO L82 GeneralOperation]: Start removeDead. Operand has 318 places, 360 transitions, 728 flow [2022-12-13 10:55:05,082 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 318 places, 360 transitions, 728 flow [2022-12-13 10:55:05,086 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 10:55:05,097 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 318 places, 360 transitions, 728 flow [2022-12-13 10:55:05,100 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 318 places, 360 transitions, 728 flow [2022-12-13 10:55:05,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 318 places, 360 transitions, 728 flow [2022-12-13 10:55:05,167 INFO L130 PetriNetUnfolder]: 73/571 cut-off events. [2022-12-13 10:55:05,167 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 10:55:05,171 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 3109 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. [2022-12-13 10:55:05,184 INFO L119 LiptonReduction]: Number of co-enabled transitions 45136 [2022-12-13 10:55:07,893 INFO L134 LiptonReduction]: Checked pairs total: 180530 [2022-12-13 10:55:07,893 INFO L136 LiptonReduction]: Total number of compositions: 204 [2022-12-13 10:55:07,904 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 10:55:07,908 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;@3a174488, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 10:55:07,909 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-12-13 10:55:07,912 INFO L130 PetriNetUnfolder]: 11/48 cut-off events. [2022-12-13 10:55:07,913 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 10:55:07,913 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:55:07,913 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2022-12-13 10:55:07,913 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)] === [2022-12-13 10:55:07,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:07,917 INFO L85 PathProgramCache]: Analyzing trace with hash 423591263, now seen corresponding path program 1 times [2022-12-13 10:55:07,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:07,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633965302] [2022-12-13 10:55:07,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:07,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:08,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 10:55:08,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:08,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633965302] [2022-12-13 10:55:08,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633965302] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:08,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:08,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 10:55:08,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228104593] [2022-12-13 10:55:08,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:08,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 10:55:08,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:08,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 10:55:08,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:55:08,121 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 564 [2022-12-13 10:55:08,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 195 transitions, 398 flow. Second operand has 3 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) [2022-12-13 10:55:08,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:55:08,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 564 [2022-12-13 10:55:08,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:55:08,488 INFO L130 PetriNetUnfolder]: 823/2936 cut-off events. [2022-12-13 10:55:08,488 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 10:55:08,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4477 conditions, 2936 events. 823/2936 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 24011 event pairs, 684 based on Foata normal form. 384/3062 useless extension candidates. Maximal degree in co-relation 4312. Up to 1534 conditions per place. [2022-12-13 10:55:08,498 INFO L137 encePairwiseOnDemand]: 529/564 looper letters, 63 selfloop transitions, 2 changer transitions 0/163 dead transitions. [2022-12-13 10:55:08,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 163 transitions, 464 flow [2022-12-13 10:55:08,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 10:55:08,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 10:55:08,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1037 transitions. [2022-12-13 10:55:08,511 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6128841607565012 [2022-12-13 10:55:08,511 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1037 transitions. [2022-12-13 10:55:08,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1037 transitions. [2022-12-13 10:55:08,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:55:08,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1037 transitions. [2022-12-13 10:55:08,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 345.6666666666667) internal successors, (1037), 3 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:08,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:08,528 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:08,529 INFO L175 Difference]: Start difference. First operand has 159 places, 195 transitions, 398 flow. Second operand 3 states and 1037 transitions. [2022-12-13 10:55:08,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 163 transitions, 464 flow [2022-12-13 10:55:08,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 163 transitions, 464 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 10:55:08,535 INFO L231 Difference]: Finished difference. Result has 161 places, 163 transitions, 344 flow [2022-12-13 10:55:08,536 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=564, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=344, PETRI_PLACES=161, PETRI_TRANSITIONS=163} [2022-12-13 10:55:08,539 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 2 predicate places. [2022-12-13 10:55:08,539 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 163 transitions, 344 flow [2022-12-13 10:55:08,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2022-12-13 10:55:08,540 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:55:08,540 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-13 10:55:08,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 10:55:08,541 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)] === [2022-12-13 10:55:08,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:08,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1885913541, now seen corresponding path program 1 times [2022-12-13 10:55:08,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:08,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612027884] [2022-12-13 10:55:08,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:08,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:08,603 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 10:55:08,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:08,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612027884] [2022-12-13 10:55:08,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612027884] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 10:55:08,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277457803] [2022-12-13 10:55:08,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:08,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 10:55:08,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70f31e-74cc-4b64-833a-54b557be20ae/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 10:55:08,605 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70f31e-74cc-4b64-833a-54b557be20ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 10:55:08,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70f31e-74cc-4b64-833a-54b557be20ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 10:55:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:08,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 10:55:08,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 10:55:08,697 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 10:55:08,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 10:55:08,710 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 10:55:08,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277457803] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 10:55:08,711 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 10:55:08,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 10:55:08,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53916525] [2022-12-13 10:55:08,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 10:55:08,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 10:55:08,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:08,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 10:55:08,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 10:55:08,735 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 564 [2022-12-13 10:55:08,737 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 163 transitions, 344 flow. Second operand has 7 states, 7 states have (on average 313.57142857142856) internal successors, (2195), 7 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:08,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:55:08,737 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 564 [2022-12-13 10:55:08,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:55:09,145 INFO L130 PetriNetUnfolder]: 823/2939 cut-off events. [2022-12-13 10:55:09,145 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 10:55:09,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4493 conditions, 2939 events. 823/2939 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 24035 event pairs, 684 based on Foata normal form. 0/2681 useless extension candidates. Maximal degree in co-relation 4481. Up to 1534 conditions per place. [2022-12-13 10:55:09,159 INFO L137 encePairwiseOnDemand]: 561/564 looper letters, 63 selfloop transitions, 5 changer transitions 0/166 dead transitions. [2022-12-13 10:55:09,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 166 transitions, 492 flow [2022-12-13 10:55:09,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 10:55:09,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 10:55:09,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1943 transitions. [2022-12-13 10:55:09,163 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5741725768321513 [2022-12-13 10:55:09,163 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1943 transitions. [2022-12-13 10:55:09,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1943 transitions. [2022-12-13 10:55:09,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:55:09,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1943 transitions. [2022-12-13 10:55:09,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 323.8333333333333) internal successors, (1943), 6 states have internal predecessors, (1943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:09,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 564.0) internal successors, (3948), 7 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:09,171 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 564.0) internal successors, (3948), 7 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:09,171 INFO L175 Difference]: Start difference. First operand has 161 places, 163 transitions, 344 flow. Second operand 6 states and 1943 transitions. [2022-12-13 10:55:09,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 166 transitions, 492 flow [2022-12-13 10:55:09,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 166 transitions, 488 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 10:55:09,174 INFO L231 Difference]: Finished difference. Result has 168 places, 166 transitions, 376 flow [2022-12-13 10:55:09,174 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=564, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=376, PETRI_PLACES=168, PETRI_TRANSITIONS=166} [2022-12-13 10:55:09,174 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 9 predicate places. [2022-12-13 10:55:09,175 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 166 transitions, 376 flow [2022-12-13 10:55:09,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 313.57142857142856) internal successors, (2195), 7 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:09,176 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:55:09,176 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2022-12-13 10:55:09,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70f31e-74cc-4b64-833a-54b557be20ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 10:55:09,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70f31e-74cc-4b64-833a-54b557be20ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 10:55:09,377 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)] === [2022-12-13 10:55:09,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:09,379 INFO L85 PathProgramCache]: Analyzing trace with hash -778644385, now seen corresponding path program 2 times [2022-12-13 10:55:09,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:09,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655415090] [2022-12-13 10:55:09,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:09,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:09,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:09,615 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 10:55:09,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:09,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655415090] [2022-12-13 10:55:09,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655415090] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 10:55:09,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118006040] [2022-12-13 10:55:09,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 10:55:09,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 10:55:09,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70f31e-74cc-4b64-833a-54b557be20ae/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 10:55:09,617 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70f31e-74cc-4b64-833a-54b557be20ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 10:55:09,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70f31e-74cc-4b64-833a-54b557be20ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 10:55:09,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 10:55:09,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 10:55:09,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 10:55:09,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 10:55:09,699 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 10:55:09,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 10:55:09,740 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 10:55:09,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118006040] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 10:55:09,740 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 10:55:09,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-13 10:55:09,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735424077] [2022-12-13 10:55:09,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 10:55:09,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 10:55:09,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:09,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 10:55:09,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 10:55:09,771 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 564 [2022-12-13 10:55:09,775 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 166 transitions, 376 flow. Second operand has 13 states, 13 states have (on average 313.3076923076923) internal successors, (4073), 13 states have internal predecessors, (4073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:09,775 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:55:09,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 564 [2022-12-13 10:55:09,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:55:10,174 INFO L130 PetriNetUnfolder]: 823/2945 cut-off events. [2022-12-13 10:55:10,175 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-12-13 10:55:10,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4530 conditions, 2945 events. 823/2945 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 23990 event pairs, 684 based on Foata normal form. 6/2694 useless extension candidates. Maximal degree in co-relation 4472. Up to 1534 conditions per place. [2022-12-13 10:55:10,188 INFO L137 encePairwiseOnDemand]: 561/564 looper letters, 63 selfloop transitions, 11 changer transitions 0/172 dead transitions. [2022-12-13 10:55:10,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 172 transitions, 560 flow [2022-12-13 10:55:10,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 10:55:10,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 10:55:10,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3824 transitions. [2022-12-13 10:55:10,196 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5650118203309693 [2022-12-13 10:55:10,196 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3824 transitions. [2022-12-13 10:55:10,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3824 transitions. [2022-12-13 10:55:10,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:55:10,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3824 transitions. [2022-12-13 10:55:10,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 318.6666666666667) internal successors, (3824), 12 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:10,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 564.0) internal successors, (7332), 13 states have internal predecessors, (7332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:10,221 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 564.0) internal successors, (7332), 13 states have internal predecessors, (7332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:10,221 INFO L175 Difference]: Start difference. First operand has 168 places, 166 transitions, 376 flow. Second operand 12 states and 3824 transitions. [2022-12-13 10:55:10,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 172 transitions, 560 flow [2022-12-13 10:55:10,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 172 transitions, 546 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-13 10:55:10,226 INFO L231 Difference]: Finished difference. Result has 184 places, 172 transitions, 446 flow [2022-12-13 10:55:10,226 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=564, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=446, PETRI_PLACES=184, PETRI_TRANSITIONS=172} [2022-12-13 10:55:10,227 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 25 predicate places. [2022-12-13 10:55:10,227 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 172 transitions, 446 flow [2022-12-13 10:55:10,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 313.3076923076923) internal successors, (4073), 13 states have internal predecessors, (4073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:10,229 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:55:10,229 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2022-12-13 10:55:10,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70f31e-74cc-4b64-833a-54b557be20ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 10:55:10,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70f31e-74cc-4b64-833a-54b557be20ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 10:55:10,431 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)] === [2022-12-13 10:55:10,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:10,432 INFO L85 PathProgramCache]: Analyzing trace with hash -45136161, now seen corresponding path program 3 times [2022-12-13 10:55:10,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:10,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089913135] [2022-12-13 10:55:10,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:10,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:10,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 10:55:10,512 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 10:55:10,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 10:55:10,583 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 10:55:10,583 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 10:55:10,584 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-12-13 10:55:10,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2022-12-13 10:55:10,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2022-12-13 10:55:10,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2022-12-13 10:55:10,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2022-12-13 10:55:10,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2022-12-13 10:55:10,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2022-12-13 10:55:10,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2022-12-13 10:55:10,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2022-12-13 10:55:10,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2022-12-13 10:55:10,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2022-12-13 10:55:10,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2022-12-13 10:55:10,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2022-12-13 10:55:10,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2022-12-13 10:55:10,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2022-12-13 10:55:10,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2022-12-13 10:55:10,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2022-12-13 10:55:10,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2022-12-13 10:55:10,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2022-12-13 10:55:10,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2022-12-13 10:55:10,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2022-12-13 10:55:10,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2022-12-13 10:55:10,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 10:55:10,590 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2022-12-13 10:55:10,592 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 10:55:10,592 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 10:55:10,630 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 10:55:10,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 411 places, 466 transitions, 950 flow [2022-12-13 10:55:10,734 INFO L130 PetriNetUnfolder]: 118/919 cut-off events. [2022-12-13 10:55:10,735 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 10:55:10,740 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 5791 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. [2022-12-13 10:55:10,740 INFO L82 GeneralOperation]: Start removeDead. Operand has 411 places, 466 transitions, 950 flow [2022-12-13 10:55:10,746 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 411 places, 466 transitions, 950 flow [2022-12-13 10:55:10,746 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 10:55:10,746 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 411 places, 466 transitions, 950 flow [2022-12-13 10:55:10,746 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 411 places, 466 transitions, 950 flow [2022-12-13 10:55:10,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 411 places, 466 transitions, 950 flow [2022-12-13 10:55:10,839 INFO L130 PetriNetUnfolder]: 118/919 cut-off events. [2022-12-13 10:55:10,839 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 10:55:10,845 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 5791 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. [2022-12-13 10:55:10,883 INFO L119 LiptonReduction]: Number of co-enabled transitions 114192 [2022-12-13 10:55:13,713 INFO L134 LiptonReduction]: Checked pairs total: 459344 [2022-12-13 10:55:13,713 INFO L136 LiptonReduction]: Total number of compositions: 254 [2022-12-13 10:55:13,714 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 10:55:13,715 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;@3a174488, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 10:55:13,715 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-12-13 10:55:13,720 INFO L130 PetriNetUnfolder]: 26/118 cut-off events. [2022-12-13 10:55:13,720 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 10:55:13,720 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:55:13,720 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:55:13,720 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)] === [2022-12-13 10:55:13,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:13,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1768773662, now seen corresponding path program 1 times [2022-12-13 10:55:13,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:13,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360826782] [2022-12-13 10:55:13,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:13,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:13,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:55:13,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:13,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360826782] [2022-12-13 10:55:13,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360826782] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:13,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:13,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 10:55:13,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866025913] [2022-12-13 10:55:13,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:13,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 10:55:13,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:13,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 10:55:13,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:55:13,755 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 404 out of 720 [2022-12-13 10:55:13,757 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 260 transitions, 538 flow. Second operand has 3 states, 3 states have (on average 406.0) internal successors, (1218), 3 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:13,757 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:55:13,757 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 404 of 720 [2022-12-13 10:55:13,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:55:19,300 INFO L130 PetriNetUnfolder]: 32889/75876 cut-off events. [2022-12-13 10:55:19,300 INFO L131 PetriNetUnfolder]: For 189/189 co-relation queries the response was YES. [2022-12-13 10:55:19,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123104 conditions, 75876 events. 32889/75876 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 1846. Compared 892540 event pairs, 28572 based on Foata normal form. 10198/78031 useless extension candidates. Maximal degree in co-relation 52746. Up to 47105 conditions per place. [2022-12-13 10:55:19,594 INFO L137 encePairwiseOnDemand]: 675/720 looper letters, 85 selfloop transitions, 2 changer transitions 0/218 dead transitions. [2022-12-13 10:55:19,594 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 218 transitions, 628 flow [2022-12-13 10:55:19,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 10:55:19,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 10:55:19,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1342 transitions. [2022-12-13 10:55:19,597 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6212962962962963 [2022-12-13 10:55:19,597 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1342 transitions. [2022-12-13 10:55:19,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1342 transitions. [2022-12-13 10:55:19,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:55:19,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1342 transitions. [2022-12-13 10:55:19,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 447.3333333333333) internal successors, (1342), 3 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:19,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 720.0) internal successors, (2880), 4 states have internal predecessors, (2880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:19,603 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 720.0) internal successors, (2880), 4 states have internal predecessors, (2880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:19,603 INFO L175 Difference]: Start difference. First operand has 213 places, 260 transitions, 538 flow. Second operand 3 states and 1342 transitions. [2022-12-13 10:55:19,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 218 transitions, 628 flow [2022-12-13 10:55:19,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 218 transitions, 628 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 10:55:19,606 INFO L231 Difference]: Finished difference. Result has 215 places, 218 transitions, 464 flow [2022-12-13 10:55:19,607 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=720, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=464, PETRI_PLACES=215, PETRI_TRANSITIONS=218} [2022-12-13 10:55:19,607 INFO L288 CegarLoopForPetriNet]: 213 programPoint places, 2 predicate places. [2022-12-13 10:55:19,607 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 218 transitions, 464 flow [2022-12-13 10:55:19,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 406.0) internal successors, (1218), 3 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:19,608 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:55:19,608 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 10:55:19,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 10:55:19,608 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-12-13 10:55:19,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:19,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1235837782, now seen corresponding path program 1 times [2022-12-13 10:55:19,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:19,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211528484] [2022-12-13 10:55:19,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:19,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:19,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:19,639 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 10:55:19,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:19,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211528484] [2022-12-13 10:55:19,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211528484] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 10:55:19,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215648244] [2022-12-13 10:55:19,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:19,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 10:55:19,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70f31e-74cc-4b64-833a-54b557be20ae/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 10:55:19,641 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70f31e-74cc-4b64-833a-54b557be20ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 10:55:19,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70f31e-74cc-4b64-833a-54b557be20ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 10:55:19,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:19,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 10:55:19,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 10:55:19,718 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 10:55:19,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 10:55:19,727 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 10:55:19,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215648244] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 10:55:19,727 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 10:55:19,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 10:55:19,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746482449] [2022-12-13 10:55:19,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 10:55:19,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 10:55:19,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:19,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 10:55:19,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 10:55:19,743 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 403 out of 720 [2022-12-13 10:55:19,744 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 218 transitions, 464 flow. Second operand has 7 states, 7 states have (on average 404.7142857142857) internal successors, (2833), 7 states have internal predecessors, (2833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:19,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:55:19,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 403 of 720 [2022-12-13 10:55:19,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:55:25,930 INFO L130 PetriNetUnfolder]: 32889/75879 cut-off events. [2022-12-13 10:55:25,931 INFO L131 PetriNetUnfolder]: For 189/189 co-relation queries the response was YES. [2022-12-13 10:55:26,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123120 conditions, 75879 events. 32889/75879 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 1846. Compared 892902 event pairs, 28572 based on Foata normal form. 0/67836 useless extension candidates. Maximal degree in co-relation 123107. Up to 47105 conditions per place. [2022-12-13 10:55:26,213 INFO L137 encePairwiseOnDemand]: 717/720 looper letters, 85 selfloop transitions, 5 changer transitions 0/221 dead transitions. [2022-12-13 10:55:26,213 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 221 transitions, 656 flow [2022-12-13 10:55:26,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 10:55:26,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 10:55:26,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2511 transitions. [2022-12-13 10:55:26,220 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.58125 [2022-12-13 10:55:26,220 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2511 transitions. [2022-12-13 10:55:26,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2511 transitions. [2022-12-13 10:55:26,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:55:26,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2511 transitions. [2022-12-13 10:55:26,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 418.5) internal successors, (2511), 6 states have internal predecessors, (2511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:26,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 720.0) internal successors, (5040), 7 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:26,231 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 720.0) internal successors, (5040), 7 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:26,231 INFO L175 Difference]: Start difference. First operand has 215 places, 218 transitions, 464 flow. Second operand 6 states and 2511 transitions. [2022-12-13 10:55:26,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 221 transitions, 656 flow [2022-12-13 10:55:26,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 221 transitions, 652 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 10:55:26,235 INFO L231 Difference]: Finished difference. Result has 222 places, 221 transitions, 496 flow [2022-12-13 10:55:26,236 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=720, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=496, PETRI_PLACES=222, PETRI_TRANSITIONS=221} [2022-12-13 10:55:26,236 INFO L288 CegarLoopForPetriNet]: 213 programPoint places, 9 predicate places. [2022-12-13 10:55:26,236 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 221 transitions, 496 flow [2022-12-13 10:55:26,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 404.7142857142857) internal successors, (2833), 7 states have internal predecessors, (2833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:26,238 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:55:26,238 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1] [2022-12-13 10:55:26,242 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70f31e-74cc-4b64-833a-54b557be20ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 10:55:26,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70f31e-74cc-4b64-833a-54b557be20ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 10:55:26,439 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-12-13 10:55:26,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:26,439 INFO L85 PathProgramCache]: Analyzing trace with hash 853598696, now seen corresponding path program 2 times [2022-12-13 10:55:26,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:26,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387610102] [2022-12-13 10:55:26,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:26,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:26,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:26,519 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 10:55:26,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:26,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387610102] [2022-12-13 10:55:26,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387610102] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 10:55:26,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461908554] [2022-12-13 10:55:26,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 10:55:26,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 10:55:26,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70f31e-74cc-4b64-833a-54b557be20ae/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 10:55:26,520 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70f31e-74cc-4b64-833a-54b557be20ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 10:55:26,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70f31e-74cc-4b64-833a-54b557be20ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 10:55:26,585 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 10:55:26,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 10:55:26,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 10:55:26,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 10:55:26,600 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 10:55:26,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 10:55:26,640 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 10:55:26,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461908554] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 10:55:26,640 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 10:55:26,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-13 10:55:26,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313400387] [2022-12-13 10:55:26,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 10:55:26,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 10:55:26,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:26,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 10:55:26,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 10:55:26,674 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 403 out of 720 [2022-12-13 10:55:26,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 221 transitions, 496 flow. Second operand has 13 states, 13 states have (on average 404.38461538461536) internal successors, (5257), 13 states have internal predecessors, (5257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:26,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:55:26,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 403 of 720 [2022-12-13 10:55:26,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:55:32,837 INFO L130 PetriNetUnfolder]: 32889/75885 cut-off events. [2022-12-13 10:55:32,838 INFO L131 PetriNetUnfolder]: For 209/209 co-relation queries the response was YES. [2022-12-13 10:55:32,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123157 conditions, 75885 events. 32889/75885 cut-off events. For 209/209 co-relation queries the response was YES. Maximal size of possible extension queue 1846. Compared 892459 event pairs, 28572 based on Foata normal form. 6/67849 useless extension candidates. Maximal degree in co-relation 123098. Up to 47105 conditions per place. [2022-12-13 10:55:33,215 INFO L137 encePairwiseOnDemand]: 717/720 looper letters, 85 selfloop transitions, 11 changer transitions 0/227 dead transitions. [2022-12-13 10:55:33,215 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 227 transitions, 724 flow [2022-12-13 10:55:33,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 10:55:33,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 10:55:33,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4938 transitions. [2022-12-13 10:55:33,226 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5715277777777777 [2022-12-13 10:55:33,227 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4938 transitions. [2022-12-13 10:55:33,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4938 transitions. [2022-12-13 10:55:33,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:55:33,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4938 transitions. [2022-12-13 10:55:33,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 411.5) internal successors, (4938), 12 states have internal predecessors, (4938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:33,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 720.0) internal successors, (9360), 13 states have internal predecessors, (9360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:33,251 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 720.0) internal successors, (9360), 13 states have internal predecessors, (9360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:33,251 INFO L175 Difference]: Start difference. First operand has 222 places, 221 transitions, 496 flow. Second operand 12 states and 4938 transitions. [2022-12-13 10:55:33,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 227 transitions, 724 flow [2022-12-13 10:55:33,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 227 transitions, 710 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-13 10:55:33,258 INFO L231 Difference]: Finished difference. Result has 238 places, 227 transitions, 566 flow [2022-12-13 10:55:33,258 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=720, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=566, PETRI_PLACES=238, PETRI_TRANSITIONS=227} [2022-12-13 10:55:33,259 INFO L288 CegarLoopForPetriNet]: 213 programPoint places, 25 predicate places. [2022-12-13 10:55:33,259 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 227 transitions, 566 flow [2022-12-13 10:55:33,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 404.38461538461536) internal successors, (5257), 13 states have internal predecessors, (5257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:33,261 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:55:33,261 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2022-12-13 10:55:33,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70f31e-74cc-4b64-833a-54b557be20ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 10:55:33,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70f31e-74cc-4b64-833a-54b557be20ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 10:55:33,463 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)] === [2022-12-13 10:55:33,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:33,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1549109928, now seen corresponding path program 3 times [2022-12-13 10:55:33,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:33,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243455986] [2022-12-13 10:55:33,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:33,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 10:55:33,518 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 10:55:33,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 10:55:33,535 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 10:55:33,535 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 10:55:33,536 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 27 remaining) [2022-12-13 10:55:33,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (25 of 27 remaining) [2022-12-13 10:55:33,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (24 of 27 remaining) [2022-12-13 10:55:33,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (23 of 27 remaining) [2022-12-13 10:55:33,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (22 of 27 remaining) [2022-12-13 10:55:33,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (21 of 27 remaining) [2022-12-13 10:55:33,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (20 of 27 remaining) [2022-12-13 10:55:33,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 27 remaining) [2022-12-13 10:55:33,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (18 of 27 remaining) [2022-12-13 10:55:33,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (17 of 27 remaining) [2022-12-13 10:55:33,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 27 remaining) [2022-12-13 10:55:33,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 27 remaining) [2022-12-13 10:55:33,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 27 remaining) [2022-12-13 10:55:33,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 27 remaining) [2022-12-13 10:55:33,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 27 remaining) [2022-12-13 10:55:33,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 27 remaining) [2022-12-13 10:55:33,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 27 remaining) [2022-12-13 10:55:33,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 27 remaining) [2022-12-13 10:55:33,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 27 remaining) [2022-12-13 10:55:33,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 27 remaining) [2022-12-13 10:55:33,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 27 remaining) [2022-12-13 10:55:33,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 27 remaining) [2022-12-13 10:55:33,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 27 remaining) [2022-12-13 10:55:33,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 27 remaining) [2022-12-13 10:55:33,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 27 remaining) [2022-12-13 10:55:33,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 27 remaining) [2022-12-13 10:55:33,539 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 27 remaining) [2022-12-13 10:55:33,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 10:55:33,539 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2022-12-13 10:55:33,539 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 10:55:33,539 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 10:55:33,588 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 10:55:33,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 504 places, 572 transitions, 1174 flow [2022-12-13 10:55:33,916 INFO L130 PetriNetUnfolder]: 168/1312 cut-off events. [2022-12-13 10:55:33,916 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 10:55:33,926 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 8729 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. [2022-12-13 10:55:33,926 INFO L82 GeneralOperation]: Start removeDead. Operand has 504 places, 572 transitions, 1174 flow [2022-12-13 10:55:33,935 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 504 places, 572 transitions, 1174 flow [2022-12-13 10:55:33,935 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 10:55:33,935 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 504 places, 572 transitions, 1174 flow [2022-12-13 10:55:33,935 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 504 places, 572 transitions, 1174 flow [2022-12-13 10:55:33,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 504 places, 572 transitions, 1174 flow [2022-12-13 10:55:34,109 INFO L130 PetriNetUnfolder]: 168/1312 cut-off events. [2022-12-13 10:55:34,110 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 10:55:34,124 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 8729 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. [2022-12-13 10:55:34,191 INFO L119 LiptonReduction]: Number of co-enabled transitions 204672 [2022-12-13 10:55:37,197 INFO L134 LiptonReduction]: Checked pairs total: 825610 [2022-12-13 10:55:37,197 INFO L136 LiptonReduction]: Total number of compositions: 312 [2022-12-13 10:55:37,198 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 10:55:37,199 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;@3a174488, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 10:55:37,199 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2022-12-13 10:55:37,206 INFO L130 PetriNetUnfolder]: 26/118 cut-off events. [2022-12-13 10:55:37,206 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 10:55:37,206 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:55:37,206 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:55:37,206 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)] === [2022-12-13 10:55:37,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:37,206 INFO L85 PathProgramCache]: Analyzing trace with hash 26940044, now seen corresponding path program 1 times [2022-12-13 10:55:37,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:37,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891978606] [2022-12-13 10:55:37,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:37,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:37,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:37,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:55:37,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:37,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891978606] [2022-12-13 10:55:37,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891978606] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:37,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:37,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 10:55:37,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690207978] [2022-12-13 10:55:37,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:37,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 10:55:37,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:37,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 10:55:37,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:55:37,243 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 495 out of 884 [2022-12-13 10:55:37,244 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 322 transitions, 674 flow. Second operand has 3 states, 3 states have (on average 497.0) internal successors, (1491), 3 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:37,244 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:55:37,245 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 495 of 884 [2022-12-13 10:55:37,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand