./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c03063-a3a1-4d4b-8953-d42dab42c2c1/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c03063-a3a1-4d4b-8953-d42dab42c2c1/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c03063-a3a1-4d4b-8953-d42dab42c2c1/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c03063-a3a1-4d4b-8953-d42dab42c2c1/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c03063-a3a1-4d4b-8953-d42dab42c2c1/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c03063-a3a1-4d4b-8953-d42dab42c2c1/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash db5eab03de8fef3e653289c5dcf0b220be6d8b09a4df3c07d6d5a066426e755a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 16:42:32,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 16:42:32,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 16:42:32,280 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 16:42:32,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 16:42:32,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 16:42:32,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 16:42:32,284 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 16:42:32,286 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 16:42:32,287 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 16:42:32,288 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 16:42:32,290 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 16:42:32,290 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 16:42:32,291 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 16:42:32,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 16:42:32,294 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 16:42:32,295 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 16:42:32,296 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 16:42:32,297 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 16:42:32,299 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 16:42:32,301 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 16:42:32,302 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 16:42:32,304 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 16:42:32,305 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 16:42:32,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 16:42:32,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 16:42:32,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 16:42:32,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 16:42:32,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 16:42:32,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 16:42:32,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 16:42:32,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 16:42:32,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 16:42:32,315 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 16:42:32,316 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 16:42:32,316 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 16:42:32,317 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 16:42:32,317 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 16:42:32,318 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 16:42:32,322 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 16:42:32,323 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 16:42:32,325 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c03063-a3a1-4d4b-8953-d42dab42c2c1/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-25 16:42:32,363 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 16:42:32,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 16:42:32,364 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 16:42:32,364 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 16:42:32,364 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 16:42:32,365 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 16:42:32,365 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 16:42:32,365 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 16:42:32,366 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 16:42:32,366 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 16:42:32,373 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 16:42:32,373 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 16:42:32,373 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 16:42:32,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 16:42:32,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 16:42:32,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 16:42:32,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 16:42:32,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 16:42:32,374 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-25 16:42:32,375 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 16:42:32,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 16:42:32,375 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 16:42:32,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 16:42:32,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 16:42:32,376 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 16:42:32,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 16:42:32,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:42:32,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 16:42:32,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 16:42:32,378 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 16:42:32,378 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 16:42:32,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 16:42:32,378 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 16:42:32,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 16:42:32,379 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 16:42:32,380 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 16:42:32,380 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_d2c03063-a3a1-4d4b-8953-d42dab42c2c1/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c03063-a3a1-4d4b-8953-d42dab42c2c1/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db5eab03de8fef3e653289c5dcf0b220be6d8b09a4df3c07d6d5a066426e755a [2022-11-25 16:42:32,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 16:42:32,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 16:42:32,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 16:42:32,664 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 16:42:32,664 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 16:42:32,666 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c03063-a3a1-4d4b-8953-d42dab42c2c1/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i [2022-11-25 16:42:35,739 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 16:42:36,010 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 16:42:36,015 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c03063-a3a1-4d4b-8953-d42dab42c2c1/sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i [2022-11-25 16:42:36,033 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c03063-a3a1-4d4b-8953-d42dab42c2c1/bin/uautomizer-ZsLfNo2U6R/data/ed6281269/7a5174779b5641aca1c022b3ce38f909/FLAG7b2a612b0 [2022-11-25 16:42:36,054 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c03063-a3a1-4d4b-8953-d42dab42c2c1/bin/uautomizer-ZsLfNo2U6R/data/ed6281269/7a5174779b5641aca1c022b3ce38f909 [2022-11-25 16:42:36,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 16:42:36,061 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 16:42:36,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 16:42:36,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 16:42:36,070 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 16:42:36,071 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:42:36" (1/1) ... [2022-11-25 16:42:36,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b244d7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:36, skipping insertion in model container [2022-11-25 16:42:36,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:42:36" (1/1) ... [2022-11-25 16:42:36,081 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 16:42:36,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 16:42:36,701 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_d2c03063-a3a1-4d4b-8953-d42dab42c2c1/sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i[47038,47051] [2022-11-25 16:42:36,781 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:42:36,916 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 16:42:37,004 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_d2c03063-a3a1-4d4b-8953-d42dab42c2c1/sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i[47038,47051] [2022-11-25 16:42:37,038 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:42:37,102 INFO L208 MainTranslator]: Completed translation [2022-11-25 16:42:37,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:37 WrapperNode [2022-11-25 16:42:37,103 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 16:42:37,104 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 16:42:37,105 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 16:42:37,105 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 16:42:37,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:37" (1/1) ... [2022-11-25 16:42:37,134 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:37" (1/1) ... [2022-11-25 16:42:37,178 INFO L138 Inliner]: procedures = 278, calls = 60, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 340 [2022-11-25 16:42:37,179 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 16:42:37,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 16:42:37,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 16:42:37,180 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 16:42:37,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:37" (1/1) ... [2022-11-25 16:42:37,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:37" (1/1) ... [2022-11-25 16:42:37,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:37" (1/1) ... [2022-11-25 16:42:37,224 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:37" (1/1) ... [2022-11-25 16:42:37,274 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:37" (1/1) ... [2022-11-25 16:42:37,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:37" (1/1) ... [2022-11-25 16:42:37,281 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:37" (1/1) ... [2022-11-25 16:42:37,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:37" (1/1) ... [2022-11-25 16:42:37,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 16:42:37,290 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 16:42:37,290 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 16:42:37,290 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 16:42:37,291 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:37" (1/1) ... [2022-11-25 16:42:37,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:42:37,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c03063-a3a1-4d4b-8953-d42dab42c2c1/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:42:37,339 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c03063-a3a1-4d4b-8953-d42dab42c2c1/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 16:42:37,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c03063-a3a1-4d4b-8953-d42dab42c2c1/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 16:42:37,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 16:42:37,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 16:42:37,392 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-11-25 16:42:37,393 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-11-25 16:42:37,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 16:42:37,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 16:42:37,395 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-25 16:42:37,395 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-25 16:42:37,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 16:42:37,395 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 16:42:37,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 16:42:37,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 16:42:37,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 16:42:37,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 16:42:37,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 16:42:37,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 16:42:37,398 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 16:42:37,627 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 16:42:37,628 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 16:42:38,368 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 16:42:38,380 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 16:42:38,380 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-25 16:42:38,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:42:38 BoogieIcfgContainer [2022-11-25 16:42:38,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 16:42:38,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 16:42:38,386 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 16:42:38,389 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 16:42:38,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 04:42:36" (1/3) ... [2022-11-25 16:42:38,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c121bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:42:38, skipping insertion in model container [2022-11-25 16:42:38,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:37" (2/3) ... [2022-11-25 16:42:38,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c121bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:42:38, skipping insertion in model container [2022-11-25 16:42:38,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:42:38" (3/3) ... [2022-11-25 16:42:38,392 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_86-lists_racing.i [2022-11-25 16:42:38,401 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 16:42:38,412 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 16:42:38,412 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2022-11-25 16:42:38,413 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 16:42:38,645 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-25 16:42:38,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 352 places, 372 transitions, 766 flow [2022-11-25 16:42:38,983 INFO L130 PetriNetUnfolder]: 54/664 cut-off events. [2022-11-25 16:42:38,984 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2022-11-25 16:42:39,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 684 conditions, 664 events. 54/664 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3080 event pairs, 0 based on Foata normal form. 0/569 useless extension candidates. Maximal degree in co-relation 332. Up to 8 conditions per place. [2022-11-25 16:42:39,004 INFO L82 GeneralOperation]: Start removeDead. Operand has 352 places, 372 transitions, 766 flow [2022-11-25 16:42:39,021 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 352 places, 372 transitions, 766 flow [2022-11-25 16:42:39,024 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 16:42:39,047 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 352 places, 372 transitions, 766 flow [2022-11-25 16:42:39,055 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 352 places, 372 transitions, 766 flow [2022-11-25 16:42:39,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 352 places, 372 transitions, 766 flow [2022-11-25 16:42:39,285 INFO L130 PetriNetUnfolder]: 54/664 cut-off events. [2022-11-25 16:42:39,286 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2022-11-25 16:42:39,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 684 conditions, 664 events. 54/664 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3080 event pairs, 0 based on Foata normal form. 0/569 useless extension candidates. Maximal degree in co-relation 332. Up to 8 conditions per place. [2022-11-25 16:42:39,331 INFO L119 LiptonReduction]: Number of co-enabled transitions 48328 [2022-11-25 16:43:05,435 WARN L233 SmtUtils]: Spent 5.00s on a formula simplification that was a NOOP. DAG size: 140 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 16:43:17,270 WARN L233 SmtUtils]: Spent 6.83s on a formula simplification that was a NOOP. DAG size: 140 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 16:43:20,508 INFO L134 LiptonReduction]: Checked pairs total: 417162 [2022-11-25 16:43:20,508 INFO L136 LiptonReduction]: Total number of compositions: 272 [2022-11-25 16:43:20,541 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:43:20,548 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;@54e272cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:43:20,549 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2022-11-25 16:43:20,553 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2022-11-25 16:43:20,554 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 16:43:20,554 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:43:20,555 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 16:43:20,556 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2022-11-25 16:43:20,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:43:20,564 INFO L85 PathProgramCache]: Analyzing trace with hash 43256, now seen corresponding path program 1 times [2022-11-25 16:43:20,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:43:20,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193828663] [2022-11-25 16:43:20,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:43:20,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:43:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:43:20,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:43:20,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:43:20,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193828663] [2022-11-25 16:43:20,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193828663] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:43:20,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:43:20,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:43:20,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964030775] [2022-11-25 16:43:20,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:43:20,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 16:43:20,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:43:20,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 16:43:20,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 16:43:20,882 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 348 out of 644 [2022-11-25 16:43:20,889 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 167 transitions, 356 flow. Second operand has 2 states, 2 states have (on average 349.0) internal successors, (698), 2 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:20,889 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:43:20,889 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 348 of 644 [2022-11-25 16:43:20,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:43:23,983 INFO L130 PetriNetUnfolder]: 6557/17359 cut-off events. [2022-11-25 16:43:23,983 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2022-11-25 16:43:24,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27612 conditions, 17359 events. 6557/17359 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 167524 event pairs, 6182 based on Foata normal form. 730/16222 useless extension candidates. Maximal degree in co-relation 25928. Up to 10124 conditions per place. [2022-11-25 16:43:24,109 INFO L137 encePairwiseOnDemand]: 630/644 looper letters, 60 selfloop transitions, 0 changer transitions 0/153 dead transitions. [2022-11-25 16:43:24,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 153 transitions, 448 flow [2022-11-25 16:43:24,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 16:43:24,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 16:43:24,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 770 transitions. [2022-11-25 16:43:24,132 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5978260869565217 [2022-11-25 16:43:24,135 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 770 transitions. [2022-11-25 16:43:24,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 770 transitions. [2022-11-25 16:43:24,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:43:24,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 770 transitions. [2022-11-25 16:43:24,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 385.0) internal successors, (770), 2 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:24,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 644.0) internal successors, (1932), 3 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:24,161 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 644.0) internal successors, (1932), 3 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:24,163 INFO L175 Difference]: Start difference. First operand has 154 places, 167 transitions, 356 flow. Second operand 2 states and 770 transitions. [2022-11-25 16:43:24,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 153 transitions, 448 flow [2022-11-25 16:43:24,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 153 transitions, 448 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 16:43:24,182 INFO L231 Difference]: Finished difference. Result has 152 places, 153 transitions, 328 flow [2022-11-25 16:43:24,184 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=328, PETRI_PLACES=152, PETRI_TRANSITIONS=153} [2022-11-25 16:43:24,190 INFO L288 CegarLoopForPetriNet]: 154 programPoint places, -2 predicate places. [2022-11-25 16:43:24,191 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 153 transitions, 328 flow [2022-11-25 16:43:24,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 349.0) internal successors, (698), 2 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:24,193 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:43:24,196 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2022-11-25 16:43:24,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 16:43:24,197 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2022-11-25 16:43:24,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:43:24,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1284108019, now seen corresponding path program 1 times [2022-11-25 16:43:24,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:43:24,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224514769] [2022-11-25 16:43:24,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:43:24,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:43:24,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:43:24,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 16:43:24,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:43:24,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224514769] [2022-11-25 16:43:24,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224514769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:43:24,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:43:24,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:43:24,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372001816] [2022-11-25 16:43:24,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:43:24,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:43:24,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:43:24,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:43:24,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:43:24,451 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 344 out of 644 [2022-11-25 16:43:24,453 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 153 transitions, 328 flow. Second operand has 3 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) [2022-11-25 16:43:24,453 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:43:24,454 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 344 of 644 [2022-11-25 16:43:24,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:43:27,238 INFO L130 PetriNetUnfolder]: 6557/17360 cut-off events. [2022-11-25 16:43:27,239 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2022-11-25 16:43:27,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27615 conditions, 17360 events. 6557/17360 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 167480 event pairs, 6182 based on Foata normal form. 0/15493 useless extension candidates. Maximal degree in co-relation 27610. Up to 10124 conditions per place. [2022-11-25 16:43:27,362 INFO L137 encePairwiseOnDemand]: 641/644 looper letters, 59 selfloop transitions, 2 changer transitions 0/154 dead transitions. [2022-11-25 16:43:27,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 154 transitions, 452 flow [2022-11-25 16:43:27,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:43:27,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:43:27,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1094 transitions. [2022-11-25 16:43:27,367 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5662525879917184 [2022-11-25 16:43:27,367 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1094 transitions. [2022-11-25 16:43:27,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1094 transitions. [2022-11-25 16:43:27,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:43:27,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1094 transitions. [2022-11-25 16:43:27,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 364.6666666666667) internal successors, (1094), 3 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:27,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 644.0) internal successors, (2576), 4 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:27,380 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 644.0) internal successors, (2576), 4 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:27,380 INFO L175 Difference]: Start difference. First operand has 152 places, 153 transitions, 328 flow. Second operand 3 states and 1094 transitions. [2022-11-25 16:43:27,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 154 transitions, 452 flow [2022-11-25 16:43:27,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 154 transitions, 452 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 16:43:27,395 INFO L231 Difference]: Finished difference. Result has 155 places, 154 transitions, 340 flow [2022-11-25 16:43:27,396 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=340, PETRI_PLACES=155, PETRI_TRANSITIONS=154} [2022-11-25 16:43:27,397 INFO L288 CegarLoopForPetriNet]: 154 programPoint places, 1 predicate places. [2022-11-25 16:43:27,397 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 154 transitions, 340 flow [2022-11-25 16:43:27,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2022-11-25 16:43:27,398 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:43:27,398 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-25 16:43:27,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 16:43:27,399 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2022-11-25 16:43:27,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:43:27,400 INFO L85 PathProgramCache]: Analyzing trace with hash -975766028, now seen corresponding path program 1 times [2022-11-25 16:43:27,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:43:27,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661852499] [2022-11-25 16:43:27,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:43:27,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:43:27,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:43:27,611 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 16:43:27,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:43:27,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661852499] [2022-11-25 16:43:27,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661852499] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:43:27,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792905734] [2022-11-25 16:43:27,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:43:27,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:43:27,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c03063-a3a1-4d4b-8953-d42dab42c2c1/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:43:27,622 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c03063-a3a1-4d4b-8953-d42dab42c2c1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:43:27,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c03063-a3a1-4d4b-8953-d42dab42c2c1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 16:43:27,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:43:27,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 16:43:27,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:43:27,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 16:43:27,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:43:27,920 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 16:43:27,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792905734] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:43:27,921 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:43:27,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-25 16:43:27,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909148380] [2022-11-25 16:43:27,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:43:27,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 16:43:27,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:43:27,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 16:43:27,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 16:43:28,021 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 644 [2022-11-25 16:43:28,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 154 transitions, 340 flow. Second operand has 7 states, 7 states have (on average 344.57142857142856) internal successors, (2412), 7 states have internal predecessors, (2412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:28,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:43:28,026 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 644 [2022-11-25 16:43:28,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:43:30,850 INFO L130 PetriNetUnfolder]: 6557/17363 cut-off events. [2022-11-25 16:43:30,850 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2022-11-25 16:43:30,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27631 conditions, 17363 events. 6557/17363 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 167461 event pairs, 6182 based on Foata normal form. 0/15496 useless extension candidates. Maximal degree in co-relation 27624. Up to 10124 conditions per place. [2022-11-25 16:43:30,965 INFO L137 encePairwiseOnDemand]: 641/644 looper letters, 59 selfloop transitions, 5 changer transitions 0/157 dead transitions. [2022-11-25 16:43:30,965 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 157 transitions, 480 flow [2022-11-25 16:43:30,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 16:43:30,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 16:43:30,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2125 transitions. [2022-11-25 16:43:30,971 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5499482401656315 [2022-11-25 16:43:30,972 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2125 transitions. [2022-11-25 16:43:30,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2125 transitions. [2022-11-25 16:43:30,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:43:30,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2125 transitions. [2022-11-25 16:43:30,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 354.1666666666667) internal successors, (2125), 6 states have internal predecessors, (2125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:30,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 644.0) internal successors, (4508), 7 states have internal predecessors, (4508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:30,989 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 644.0) internal successors, (4508), 7 states have internal predecessors, (4508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:30,990 INFO L175 Difference]: Start difference. First operand has 155 places, 154 transitions, 340 flow. Second operand 6 states and 2125 transitions. [2022-11-25 16:43:30,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 157 transitions, 480 flow [2022-11-25 16:43:30,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 157 transitions, 476 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 16:43:30,999 INFO L231 Difference]: Finished difference. Result has 162 places, 157 transitions, 372 flow [2022-11-25 16:43:30,999 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=372, PETRI_PLACES=162, PETRI_TRANSITIONS=157} [2022-11-25 16:43:31,000 INFO L288 CegarLoopForPetriNet]: 154 programPoint places, 8 predicate places. [2022-11-25 16:43:31,000 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 157 transitions, 372 flow [2022-11-25 16:43:31,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 344.57142857142856) internal successors, (2412), 7 states have internal predecessors, (2412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:31,002 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:43:31,002 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2022-11-25 16:43:31,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c03063-a3a1-4d4b-8953-d42dab42c2c1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 16:43:31,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c03063-a3a1-4d4b-8953-d42dab42c2c1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:43:31,210 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2022-11-25 16:43:31,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:43:31,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1093261517, now seen corresponding path program 2 times [2022-11-25 16:43:31,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:43:31,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360639001] [2022-11-25 16:43:31,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:43:31,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:43:31,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:43:31,606 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 16:43:31,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:43:31,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360639001] [2022-11-25 16:43:31,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360639001] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:43:31,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787494563] [2022-11-25 16:43:31,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 16:43:31,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:43:31,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c03063-a3a1-4d4b-8953-d42dab42c2c1/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:43:31,609 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c03063-a3a1-4d4b-8953-d42dab42c2c1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:43:31,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c03063-a3a1-4d4b-8953-d42dab42c2c1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 16:43:31,868 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 16:43:31,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 16:43:31,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 16:43:31,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:43:31,899 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 16:43:31,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:43:31,973 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 16:43:31,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787494563] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:43:31,974 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:43:31,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-25 16:43:31,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143141302] [2022-11-25 16:43:31,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:43:31,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 16:43:31,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:43:31,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 16:43:31,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-25 16:43:32,161 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 644 [2022-11-25 16:43:32,167 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 157 transitions, 372 flow. Second operand has 13 states, 13 states have (on average 344.3076923076923) internal successors, (4476), 13 states have internal predecessors, (4476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:32,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:43:32,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 644 [2022-11-25 16:43:32,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:43:35,247 INFO L130 PetriNetUnfolder]: 6557/17369 cut-off events. [2022-11-25 16:43:35,247 INFO L131 PetriNetUnfolder]: For 132/132 co-relation queries the response was YES. [2022-11-25 16:43:35,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27668 conditions, 17369 events. 6557/17369 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 167412 event pairs, 6182 based on Foata normal form. 6/15509 useless extension candidates. Maximal degree in co-relation 27658. Up to 10124 conditions per place. [2022-11-25 16:43:35,359 INFO L137 encePairwiseOnDemand]: 641/644 looper letters, 59 selfloop transitions, 11 changer transitions 0/163 dead transitions. [2022-11-25 16:43:35,360 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 163 transitions, 548 flow [2022-11-25 16:43:35,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 16:43:35,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 16:43:35,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4192 transitions. [2022-11-25 16:43:35,369 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5424430641821946 [2022-11-25 16:43:35,369 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4192 transitions. [2022-11-25 16:43:35,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4192 transitions. [2022-11-25 16:43:35,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:43:35,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4192 transitions. [2022-11-25 16:43:35,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 349.3333333333333) internal successors, (4192), 12 states have internal predecessors, (4192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:35,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 644.0) internal successors, (8372), 13 states have internal predecessors, (8372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:35,399 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 644.0) internal successors, (8372), 13 states have internal predecessors, (8372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:35,399 INFO L175 Difference]: Start difference. First operand has 162 places, 157 transitions, 372 flow. Second operand 12 states and 4192 transitions. [2022-11-25 16:43:35,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 163 transitions, 548 flow [2022-11-25 16:43:35,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 163 transitions, 534 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-25 16:43:35,408 INFO L231 Difference]: Finished difference. Result has 178 places, 163 transitions, 442 flow [2022-11-25 16:43:35,409 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=442, PETRI_PLACES=178, PETRI_TRANSITIONS=163} [2022-11-25 16:43:35,409 INFO L288 CegarLoopForPetriNet]: 154 programPoint places, 24 predicate places. [2022-11-25 16:43:35,410 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 163 transitions, 442 flow [2022-11-25 16:43:35,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 344.3076923076923) internal successors, (4476), 13 states have internal predecessors, (4476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:35,412 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:43:35,412 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2022-11-25 16:43:35,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c03063-a3a1-4d4b-8953-d42dab42c2c1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 16:43:35,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c03063-a3a1-4d4b-8953-d42dab42c2c1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:43:35,619 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2022-11-25 16:43:35,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:43:35,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1508114541, now seen corresponding path program 3 times [2022-11-25 16:43:35,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:43:35,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196293307] [2022-11-25 16:43:35,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:43:35,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:43:35,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:43:36,459 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 16:43:36,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:43:36,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196293307] [2022-11-25 16:43:36,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196293307] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:43:36,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408621232] [2022-11-25 16:43:36,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 16:43:36,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:43:36,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c03063-a3a1-4d4b-8953-d42dab42c2c1/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:43:36,462 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c03063-a3a1-4d4b-8953-d42dab42c2c1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:43:36,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2c03063-a3a1-4d4b-8953-d42dab42c2c1/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process