./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 5e519f3a 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_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc --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 566e2cbe460cf96671c9cef5a53ce51910e23c462e96f394be80b957976729c5 --- 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-5e519f3 [2022-11-02 20:12:16,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:12:16,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:12:16,937 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:12:16,937 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:12:16,938 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:12:16,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:12:16,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:12:16,944 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:12:16,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:12:16,947 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:12:16,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:12:16,949 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:12:16,950 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:12:16,951 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:12:16,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:12:16,954 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:12:16,955 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:12:16,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:12:16,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:12:16,963 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:12:16,971 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:12:16,972 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:12:16,973 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:12:16,977 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:12:16,978 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:12:16,978 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:12:16,979 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:12:16,980 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:12:16,981 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:12:16,982 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:12:16,992 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:12:16,993 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:12:16,994 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:12:16,996 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:12:16,996 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:12:16,997 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:12:16,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:12:16,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:12:16,999 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:12:17,000 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:12:17,003 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-02 20:12:17,051 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:12:17,051 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:12:17,052 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:12:17,052 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:12:17,053 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:12:17,054 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:12:17,054 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:12:17,055 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:12:17,055 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:12:17,055 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:12:17,057 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:12:17,057 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:12:17,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:12:17,057 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:12:17,058 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:12:17,058 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:12:17,058 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:12:17,058 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:12:17,059 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-02 20:12:17,059 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:12:17,059 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:12:17,059 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:12:17,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:12:17,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:12:17,060 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:12:17,060 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:12:17,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:12:17,063 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:12:17,063 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:12:17,063 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:12:17,063 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:12:17,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:12:17,064 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:12:17,064 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:12:17,065 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:12:17,065 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 566e2cbe460cf96671c9cef5a53ce51910e23c462e96f394be80b957976729c5 [2022-11-02 20:12:17,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:12:17,449 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:12:17,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:12:17,453 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:12:17,454 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:12:17,455 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2022-11-02 20:12:17,534 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/data/2bfb032cb/d7dc4f68c9074eb8866542279f3bf9f6/FLAG5790ab032 [2022-11-02 20:12:18,120 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:12:18,121 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2022-11-02 20:12:18,140 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/data/2bfb032cb/d7dc4f68c9074eb8866542279f3bf9f6/FLAG5790ab032 [2022-11-02 20:12:18,374 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/data/2bfb032cb/d7dc4f68c9074eb8866542279f3bf9f6 [2022-11-02 20:12:18,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:12:18,377 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:12:18,381 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:12:18,381 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:12:18,385 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:12:18,386 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:12:18" (1/1) ... [2022-11-02 20:12:18,387 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bb07431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:12:18, skipping insertion in model container [2022-11-02 20:12:18,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:12:18" (1/1) ... [2022-11-02 20:12:18,398 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:12:18,474 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:12:19,112 WARN L230 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_1cfb9002-034e-42e6-82c0-0e69ce8b047e/sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i[41323,41336] [2022-11-02 20:12:19,164 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:12:19,187 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:12:19,242 WARN L230 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_1cfb9002-034e-42e6-82c0-0e69ce8b047e/sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i[41323,41336] [2022-11-02 20:12:19,273 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:12:19,333 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:12:19,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:12:19 WrapperNode [2022-11-02 20:12:19,334 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:12:19,335 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:12:19,335 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:12:19,336 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:12:19,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:12:19" (1/1) ... [2022-11-02 20:12:19,377 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:12:19" (1/1) ... [2022-11-02 20:12:19,445 INFO L138 Inliner]: procedures = 271, calls = 41, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 339 [2022-11-02 20:12:19,450 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:12:19,451 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:12:19,451 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:12:19,452 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:12:19,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:12:19" (1/1) ... [2022-11-02 20:12:19,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:12:19" (1/1) ... [2022-11-02 20:12:19,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:12:19" (1/1) ... [2022-11-02 20:12:19,491 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:12:19" (1/1) ... [2022-11-02 20:12:19,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:12:19" (1/1) ... [2022-11-02 20:12:19,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:12:19" (1/1) ... [2022-11-02 20:12:19,536 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:12:19" (1/1) ... [2022-11-02 20:12:19,539 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:12:19" (1/1) ... [2022-11-02 20:12:19,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:12:19,546 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:12:19,546 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:12:19,546 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:12:19,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:12:19" (1/1) ... [2022-11-02 20:12:19,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:12:19,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:12:19,598 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:12:19,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:12:19,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:12:19,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:12:19,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:12:19,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:12:19,658 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-02 20:12:19,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:12:19,658 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-02 20:12:19,658 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-02 20:12:19,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:12:19,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:12:19,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:12:19,660 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:12:19,827 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:12:19,830 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:12:20,668 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:12:20,681 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:12:20,690 INFO L300 CfgBuilder]: Removed 35 assume(true) statements. [2022-11-02 20:12:20,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:12:20 BoogieIcfgContainer [2022-11-02 20:12:20,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:12:20,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:12:20,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:12:20,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:12:20,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:12:18" (1/3) ... [2022-11-02 20:12:20,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a4ab3c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:12:20, skipping insertion in model container [2022-11-02 20:12:20,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:12:19" (2/3) ... [2022-11-02 20:12:20,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a4ab3c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:12:20, skipping insertion in model container [2022-11-02 20:12:20,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:12:20" (3/3) ... [2022-11-02 20:12:20,712 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_72-funloop_hard_racing.i [2022-11-02 20:12:20,721 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:12:20,737 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:12:20,738 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-02 20:12:20,738 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:12:20,884 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-02 20:12:20,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 318 places, 360 transitions, 728 flow [2022-11-02 20:12:21,252 INFO L130 PetriNetUnfolder]: 73/571 cut-off events. [2022-11-02 20:12:21,252 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 20:12:21,268 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 3115 event pairs, 0 based on Foata normal form. 0/468 useless extension candidates. Maximal degree in co-relation 320. Up to 8 conditions per place. [2022-11-02 20:12:21,268 INFO L82 GeneralOperation]: Start removeDead. Operand has 318 places, 360 transitions, 728 flow [2022-11-02 20:12:21,286 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 318 places, 360 transitions, 728 flow [2022-11-02 20:12:21,308 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:12:21,318 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;@38e6c613, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:12:21,318 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-02 20:12:21,344 INFO L130 PetriNetUnfolder]: 17/149 cut-off events. [2022-11-02 20:12:21,345 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:12:21,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:12:21,347 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:12:21,347 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-02 20:12:21,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:12:21,355 INFO L85 PathProgramCache]: Analyzing trace with hash 675582691, now seen corresponding path program 1 times [2022-11-02 20:12:21,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:12:21,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317382522] [2022-11-02 20:12:21,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:21,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:12:21,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:12:21,722 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:12:21,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:12:21,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317382522] [2022-11-02 20:12:21,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317382522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:12:21,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:12:21,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:12:21,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877405739] [2022-11-02 20:12:21,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:12:21,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:12:21,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:12:21,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:12:21,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:12:21,780 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 360 [2022-11-02 20:12:21,792 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 360 transitions, 728 flow. Second operand has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:21,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:12:21,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 360 [2022-11-02 20:12:21,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:12:22,024 INFO L130 PetriNetUnfolder]: 10/507 cut-off events. [2022-11-02 20:12:22,024 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-02 20:12:22,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 527 conditions, 507 events. 10/507 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2395 event pairs, 0 based on Foata normal form. 62/524 useless extension candidates. Maximal degree in co-relation 282. Up to 10 conditions per place. [2022-11-02 20:12:22,035 INFO L137 encePairwiseOnDemand]: 319/360 looper letters, 11 selfloop transitions, 2 changer transitions 0/323 dead transitions. [2022-11-02 20:12:22,036 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 323 transitions, 680 flow [2022-11-02 20:12:22,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:12:22,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:12:22,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2022-11-02 20:12:22,066 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9101851851851852 [2022-11-02 20:12:22,067 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2022-11-02 20:12:22,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2022-11-02 20:12:22,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:12:22,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2022-11-02 20:12:22,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 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) [2022-11-02 20:12:22,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 360.0) internal successors, (1440), 4 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:22,102 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 360.0) internal successors, (1440), 4 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:22,104 INFO L175 Difference]: Start difference. First operand has 318 places, 360 transitions, 728 flow. Second operand 3 states and 983 transitions. [2022-11-02 20:12:22,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 323 transitions, 680 flow [2022-11-02 20:12:22,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 323 transitions, 680 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:12:22,125 INFO L231 Difference]: Finished difference. Result has 318 places, 320 transitions, 658 flow [2022-11-02 20:12:22,128 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=360, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=658, PETRI_PLACES=318, PETRI_TRANSITIONS=320} [2022-11-02 20:12:22,132 INFO L287 CegarLoopForPetriNet]: 318 programPoint places, 0 predicate places. [2022-11-02 20:12:22,132 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 320 transitions, 658 flow [2022-11-02 20:12:22,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:22,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:12:22,135 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:12:22,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:12:22,136 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-02 20:12:22,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:12:22,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1096004172, now seen corresponding path program 1 times [2022-11-02 20:12:22,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:12:22,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058609210] [2022-11-02 20:12:22,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:22,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:12:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:12:22,357 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:12:22,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:12:22,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058609210] [2022-11-02 20:12:22,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058609210] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:12:22,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115569381] [2022-11-02 20:12:22,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:22,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:12:22,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:12:22,361 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:12:22,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:12:22,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:12:22,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:12:22,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:12:22,569 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:12:22,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:12:22,615 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:12:22,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115569381] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:12:22,616 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:12:22,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-02 20:12:22,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121057082] [2022-11-02 20:12:22,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:12:22,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:12:22,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:12:22,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:12:22,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:12:22,624 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 360 [2022-11-02 20:12:22,629 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 320 transitions, 658 flow. Second operand has 10 states, 10 states have (on average 311.1) internal successors, (3111), 10 states have internal predecessors, (3111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:22,629 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:12:22,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 360 [2022-11-02 20:12:22,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:12:22,859 INFO L130 PetriNetUnfolder]: 10/514 cut-off events. [2022-11-02 20:12:22,859 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-02 20:12:22,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 550 conditions, 514 events. 10/514 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2401 event pairs, 0 based on Foata normal form. 2/472 useless extension candidates. Maximal degree in co-relation 509. Up to 7 conditions per place. [2022-11-02 20:12:22,867 INFO L137 encePairwiseOnDemand]: 354/360 looper letters, 12 selfloop transitions, 9 changer transitions 0/330 dead transitions. [2022-11-02 20:12:22,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 330 transitions, 722 flow [2022-11-02 20:12:22,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:12:22,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:12:22,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2804 transitions. [2022-11-02 20:12:22,875 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8654320987654321 [2022-11-02 20:12:22,875 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2804 transitions. [2022-11-02 20:12:22,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2804 transitions. [2022-11-02 20:12:22,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:12:22,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2804 transitions. [2022-11-02 20:12:22,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 311.55555555555554) internal successors, (2804), 9 states have internal predecessors, (2804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:22,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 360.0) internal successors, (3600), 10 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:22,896 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 360.0) internal successors, (3600), 10 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:22,897 INFO L175 Difference]: Start difference. First operand has 318 places, 320 transitions, 658 flow. Second operand 9 states and 2804 transitions. [2022-11-02 20:12:22,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 330 transitions, 722 flow [2022-11-02 20:12:22,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 330 transitions, 720 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:12:22,905 INFO L231 Difference]: Finished difference. Result has 328 places, 326 transitions, 706 flow [2022-11-02 20:12:22,906 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=360, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=706, PETRI_PLACES=328, PETRI_TRANSITIONS=326} [2022-11-02 20:12:22,907 INFO L287 CegarLoopForPetriNet]: 318 programPoint places, 10 predicate places. [2022-11-02 20:12:22,907 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 326 transitions, 706 flow [2022-11-02 20:12:22,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 311.1) internal successors, (3111), 10 states have internal predecessors, (3111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:22,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:12:22,910 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:12:22,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:12:23,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:12:23,139 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-02 20:12:23,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:12:23,139 INFO L85 PathProgramCache]: Analyzing trace with hash 684620972, now seen corresponding path program 2 times [2022-11-02 20:12:23,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:12:23,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754809069] [2022-11-02 20:12:23,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:23,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:12:23,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:12:23,377 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:12:23,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:12:23,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754809069] [2022-11-02 20:12:23,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754809069] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:12:23,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399644709] [2022-11-02 20:12:23,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:12:23,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:12:23,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:12:23,380 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:12:23,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:12:23,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:12:23,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:12:23,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:12:23,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:12:23,613 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:12:23,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:12:23,756 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:12:23,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399644709] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:12:23,759 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:12:23,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-02 20:12:23,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176922898] [2022-11-02 20:12:23,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:12:23,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:12:23,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:12:23,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:12:23,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:12:23,774 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 360 [2022-11-02 20:12:23,782 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 326 transitions, 706 flow. Second operand has 18 states, 18 states have (on average 311.27777777777777) internal successors, (5603), 18 states have internal predecessors, (5603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:23,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:12:23,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 360 [2022-11-02 20:12:23,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:12:24,192 INFO L130 PetriNetUnfolder]: 10/534 cut-off events. [2022-11-02 20:12:24,192 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2022-11-02 20:12:24,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 639 conditions, 534 events. 10/534 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2386 event pairs, 0 based on Foata normal form. 4/494 useless extension candidates. Maximal degree in co-relation 485. Up to 11 conditions per place. [2022-11-02 20:12:24,200 INFO L137 encePairwiseOnDemand]: 354/360 looper letters, 20 selfloop transitions, 21 changer transitions 0/350 dead transitions. [2022-11-02 20:12:24,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 350 transitions, 896 flow [2022-11-02 20:12:24,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:12:24,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-02 20:12:24,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6534 transitions. [2022-11-02 20:12:24,215 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8642857142857143 [2022-11-02 20:12:24,215 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6534 transitions. [2022-11-02 20:12:24,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6534 transitions. [2022-11-02 20:12:24,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:12:24,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6534 transitions. [2022-11-02 20:12:24,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 311.14285714285717) internal successors, (6534), 21 states have internal predecessors, (6534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:24,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 360.0) internal successors, (7920), 22 states have internal predecessors, (7920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:24,301 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 360.0) internal successors, (7920), 22 states have internal predecessors, (7920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:24,301 INFO L175 Difference]: Start difference. First operand has 328 places, 326 transitions, 706 flow. Second operand 21 states and 6534 transitions. [2022-11-02 20:12:24,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 350 transitions, 896 flow [2022-11-02 20:12:24,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 350 transitions, 882 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-02 20:12:24,312 INFO L231 Difference]: Finished difference. Result has 352 places, 339 transitions, 830 flow [2022-11-02 20:12:24,313 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=360, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=830, PETRI_PLACES=352, PETRI_TRANSITIONS=339} [2022-11-02 20:12:24,313 INFO L287 CegarLoopForPetriNet]: 318 programPoint places, 34 predicate places. [2022-11-02 20:12:24,314 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 339 transitions, 830 flow [2022-11-02 20:12:24,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 311.27777777777777) internal successors, (5603), 18 states have internal predecessors, (5603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:24,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:12:24,317 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:12:24,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:12:24,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:12:24,535 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-02 20:12:24,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:12:24,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1675253396, now seen corresponding path program 3 times [2022-11-02 20:12:24,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:12:24,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236911081] [2022-11-02 20:12:24,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:24,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:12:24,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:12:25,019 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:12:25,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:12:25,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236911081] [2022-11-02 20:12:25,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236911081] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:12:25,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163362685] [2022-11-02 20:12:25,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:12:25,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:12:25,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:12:25,024 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:12:25,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:12:25,192 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-02 20:12:25,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:12:25,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:12:25,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:12:25,341 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:12:25,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:12:25,610 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:12:25,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163362685] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:12:25,611 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:12:25,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-02 20:12:25,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270989235] [2022-11-02 20:12:25,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:12:25,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-02 20:12:25,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:12:25,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-02 20:12:25,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-02 20:12:25,626 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 360 [2022-11-02 20:12:25,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 339 transitions, 830 flow. Second operand has 23 states, 23 states have (on average 311.4347826086956) internal successors, (7163), 23 states have internal predecessors, (7163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:25,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:12:25,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 360 [2022-11-02 20:12:25,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:12:26,164 INFO L130 PetriNetUnfolder]: 10/549 cut-off events. [2022-11-02 20:12:26,165 INFO L131 PetriNetUnfolder]: For 113/113 co-relation queries the response was YES. [2022-11-02 20:12:26,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 740 conditions, 549 events. 10/549 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2384 event pairs, 0 based on Foata normal form. 3/508 useless extension candidates. Maximal degree in co-relation 489. Up to 17 conditions per place. [2022-11-02 20:12:26,173 INFO L137 encePairwiseOnDemand]: 354/360 looper letters, 26 selfloop transitions, 30 changer transitions 0/365 dead transitions. [2022-11-02 20:12:26,173 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 365 transitions, 1088 flow [2022-11-02 20:12:26,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-02 20:12:26,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-02 20:12:26,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 9329 transitions. [2022-11-02 20:12:26,194 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8637962962962963 [2022-11-02 20:12:26,194 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 9329 transitions. [2022-11-02 20:12:26,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 9329 transitions. [2022-11-02 20:12:26,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:12:26,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 9329 transitions. [2022-11-02 20:12:26,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 310.96666666666664) internal successors, (9329), 30 states have internal predecessors, (9329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:26,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 360.0) internal successors, (11160), 31 states have internal predecessors, (11160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:26,314 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 360.0) internal successors, (11160), 31 states have internal predecessors, (11160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:26,317 INFO L175 Difference]: Start difference. First operand has 352 places, 339 transitions, 830 flow. Second operand 30 states and 9329 transitions. [2022-11-02 20:12:26,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 365 transitions, 1088 flow [2022-11-02 20:12:26,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 365 transitions, 1058 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-11-02 20:12:26,330 INFO L231 Difference]: Finished difference. Result has 379 places, 349 transitions, 958 flow [2022-11-02 20:12:26,331 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=360, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=958, PETRI_PLACES=379, PETRI_TRANSITIONS=349} [2022-11-02 20:12:26,333 INFO L287 CegarLoopForPetriNet]: 318 programPoint places, 61 predicate places. [2022-11-02 20:12:26,333 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 349 transitions, 958 flow [2022-11-02 20:12:26,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 311.4347826086956) internal successors, (7163), 23 states have internal predecessors, (7163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:26,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:12:26,337 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:12:26,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:12:26,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:12:26,550 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-02 20:12:26,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:12:26,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1762761981, now seen corresponding path program 4 times [2022-11-02 20:12:26,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:12:26,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690847496] [2022-11-02 20:12:26,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:26,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:12:26,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:12:26,608 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:12:26,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:12:26,671 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:12:26,671 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:12:26,672 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-11-02 20:12:26,675 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2022-11-02 20:12:26,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2022-11-02 20:12:26,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2022-11-02 20:12:26,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2022-11-02 20:12:26,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2022-11-02 20:12:26,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2022-11-02 20:12:26,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2022-11-02 20:12:26,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2022-11-02 20:12:26,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2022-11-02 20:12:26,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2022-11-02 20:12:26,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2022-11-02 20:12:26,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2022-11-02 20:12:26,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2022-11-02 20:12:26,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2022-11-02 20:12:26,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2022-11-02 20:12:26,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2022-11-02 20:12:26,687 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2022-11-02 20:12:26,687 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2022-11-02 20:12:26,687 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2022-11-02 20:12:26,687 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2022-11-02 20:12:26,688 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2022-11-02 20:12:26,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:12:26,688 INFO L444 BasicCegarLoop]: Path program histogram: [4, 1] [2022-11-02 20:12:26,691 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:12:26,691 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-02 20:12:26,755 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 20:12:26,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 411 places, 466 transitions, 950 flow [2022-11-02 20:12:27,004 INFO L130 PetriNetUnfolder]: 118/919 cut-off events. [2022-11-02 20:12:27,005 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-02 20:12:27,022 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 5805 event pairs, 0 based on Foata normal form. 0/753 useless extension candidates. Maximal degree in co-relation 573. Up to 12 conditions per place. [2022-11-02 20:12:27,022 INFO L82 GeneralOperation]: Start removeDead. Operand has 411 places, 466 transitions, 950 flow [2022-11-02 20:12:27,036 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 411 places, 466 transitions, 950 flow [2022-11-02 20:12:27,037 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:12:27,046 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;@38e6c613, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:12:27,046 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-11-02 20:12:27,059 INFO L130 PetriNetUnfolder]: 17/148 cut-off events. [2022-11-02 20:12:27,059 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 20:12:27,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:12:27,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:12:27,060 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 20:12:27,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:12:27,061 INFO L85 PathProgramCache]: Analyzing trace with hash -956809404, now seen corresponding path program 1 times [2022-11-02 20:12:27,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:12:27,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571292641] [2022-11-02 20:12:27,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:27,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:12:27,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:12:27,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:12:27,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:12:27,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571292641] [2022-11-02 20:12:27,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571292641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:12:27,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:12:27,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:12:27,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701405885] [2022-11-02 20:12:27,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:12:27,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:12:27,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:12:27,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:12:27,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:12:27,110 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 408 out of 466 [2022-11-02 20:12:27,111 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 466 transitions, 950 flow. Second operand has 2 states, 2 states have (on average 409.5) internal successors, (819), 2 states have internal predecessors, (819), 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) [2022-11-02 20:12:27,116 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:12:27,116 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 408 of 466 [2022-11-02 20:12:27,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:12:27,390 INFO L130 PetriNetUnfolder]: 17/810 cut-off events. [2022-11-02 20:12:27,391 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-02 20:12:27,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 831 conditions, 810 events. 17/810 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4782 event pairs, 0 based on Foata normal form. 124/861 useless extension candidates. Maximal degree in co-relation 507. Up to 7 conditions per place. [2022-11-02 20:12:27,409 INFO L137 encePairwiseOnDemand]: 416/466 looper letters, 4 selfloop transitions, 0 changer transitions 0/412 dead transitions. [2022-11-02 20:12:27,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 412 transitions, 850 flow [2022-11-02 20:12:27,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:12:27,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:12:27,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 870 transitions. [2022-11-02 20:12:27,416 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9334763948497854 [2022-11-02 20:12:27,416 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 870 transitions. [2022-11-02 20:12:27,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 870 transitions. [2022-11-02 20:12:27,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:12:27,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 870 transitions. [2022-11-02 20:12:27,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 435.0) internal successors, (870), 2 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:27,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 466.0) internal successors, (1398), 3 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:27,423 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 466.0) internal successors, (1398), 3 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:27,423 INFO L175 Difference]: Start difference. First operand has 411 places, 466 transitions, 950 flow. Second operand 2 states and 870 transitions. [2022-11-02 20:12:27,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 412 transitions, 850 flow [2022-11-02 20:12:27,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 412 transitions, 850 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:12:27,434 INFO L231 Difference]: Finished difference. Result has 408 places, 412 transitions, 842 flow [2022-11-02 20:12:27,435 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=842, PETRI_PLACES=408, PETRI_TRANSITIONS=412} [2022-11-02 20:12:27,439 INFO L287 CegarLoopForPetriNet]: 411 programPoint places, -3 predicate places. [2022-11-02 20:12:27,439 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 412 transitions, 842 flow [2022-11-02 20:12:27,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 409.5) internal successors, (819), 2 states have internal predecessors, (819), 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) [2022-11-02 20:12:27,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:12:27,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:12:27,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:12:27,441 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 20:12:27,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:12:27,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1992012664, now seen corresponding path program 1 times [2022-11-02 20:12:27,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:12:27,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184484259] [2022-11-02 20:12:27,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:27,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:12:27,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:12:27,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:12:27,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:12:27,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184484259] [2022-11-02 20:12:27,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184484259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:12:27,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:12:27,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:12:27,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742824366] [2022-11-02 20:12:27,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:12:27,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:12:27,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:12:27,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:12:27,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:12:27,510 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 401 out of 466 [2022-11-02 20:12:27,512 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 412 transitions, 842 flow. Second operand has 3 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:27,512 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:12:27,512 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 401 of 466 [2022-11-02 20:12:27,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:12:27,791 INFO L130 PetriNetUnfolder]: 17/814 cut-off events. [2022-11-02 20:12:27,792 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-02 20:12:27,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 847 conditions, 814 events. 17/814 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4780 event pairs, 0 based on Foata normal form. 0/741 useless extension candidates. Maximal degree in co-relation 842. Up to 14 conditions per place. [2022-11-02 20:12:27,811 INFO L137 encePairwiseOnDemand]: 463/466 looper letters, 13 selfloop transitions, 2 changer transitions 0/416 dead transitions. [2022-11-02 20:12:27,811 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 416 transitions, 880 flow [2022-11-02 20:12:27,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:12:27,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:12:27,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1219 transitions. [2022-11-02 20:12:27,815 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8719599427753935 [2022-11-02 20:12:27,816 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1219 transitions. [2022-11-02 20:12:27,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1219 transitions. [2022-11-02 20:12:27,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:12:27,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1219 transitions. [2022-11-02 20:12:27,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 406.3333333333333) internal successors, (1219), 3 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:27,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 466.0) internal successors, (1864), 4 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:27,825 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 466.0) internal successors, (1864), 4 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:27,825 INFO L175 Difference]: Start difference. First operand has 408 places, 412 transitions, 842 flow. Second operand 3 states and 1219 transitions. [2022-11-02 20:12:27,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 416 transitions, 880 flow [2022-11-02 20:12:27,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 416 transitions, 880 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:12:27,836 INFO L231 Difference]: Finished difference. Result has 411 places, 413 transitions, 854 flow [2022-11-02 20:12:27,837 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=854, PETRI_PLACES=411, PETRI_TRANSITIONS=413} [2022-11-02 20:12:27,837 INFO L287 CegarLoopForPetriNet]: 411 programPoint places, 0 predicate places. [2022-11-02 20:12:27,838 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 413 transitions, 854 flow [2022-11-02 20:12:27,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:27,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:12:27,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:12:27,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:12:27,839 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 20:12:27,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:12:27,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1902015645, now seen corresponding path program 1 times [2022-11-02 20:12:27,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:12:27,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635431277] [2022-11-02 20:12:27,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:27,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:12:27,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:12:27,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:12:27,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:12:27,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635431277] [2022-11-02 20:12:27,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635431277] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:12:27,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167753740] [2022-11-02 20:12:27,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:27,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:12:27,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:12:27,923 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:12:27,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:12:28,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:12:28,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:12:28,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:12:28,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:12:28,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:12:28,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167753740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:12:28,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:12:28,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-02 20:12:28,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248755963] [2022-11-02 20:12:28,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:12:28,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:12:28,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:12:28,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:12:28,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:12:28,058 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 401 out of 466 [2022-11-02 20:12:28,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 413 transitions, 854 flow. Second operand has 3 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:28,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:12:28,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 401 of 466 [2022-11-02 20:12:28,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:12:28,295 INFO L130 PetriNetUnfolder]: 13/649 cut-off events. [2022-11-02 20:12:28,296 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-11-02 20:12:28,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 692 conditions, 649 events. 13/649 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3400 event pairs, 0 based on Foata normal form. 0/593 useless extension candidates. Maximal degree in co-relation 685. Up to 16 conditions per place. [2022-11-02 20:12:28,317 INFO L137 encePairwiseOnDemand]: 463/466 looper letters, 13 selfloop transitions, 2 changer transitions 0/417 dead transitions. [2022-11-02 20:12:28,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 417 transitions, 892 flow [2022-11-02 20:12:28,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:12:28,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:12:28,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1219 transitions. [2022-11-02 20:12:28,322 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8719599427753935 [2022-11-02 20:12:28,322 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1219 transitions. [2022-11-02 20:12:28,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1219 transitions. [2022-11-02 20:12:28,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:12:28,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1219 transitions. [2022-11-02 20:12:28,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 406.3333333333333) internal successors, (1219), 3 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:28,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 466.0) internal successors, (1864), 4 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:28,331 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 466.0) internal successors, (1864), 4 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:28,331 INFO L175 Difference]: Start difference. First operand has 411 places, 413 transitions, 854 flow. Second operand 3 states and 1219 transitions. [2022-11-02 20:12:28,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 417 transitions, 892 flow [2022-11-02 20:12:28,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 417 transitions, 890 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:12:28,342 INFO L231 Difference]: Finished difference. Result has 413 places, 414 transitions, 864 flow [2022-11-02 20:12:28,343 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=864, PETRI_PLACES=413, PETRI_TRANSITIONS=414} [2022-11-02 20:12:28,343 INFO L287 CegarLoopForPetriNet]: 411 programPoint places, 2 predicate places. [2022-11-02 20:12:28,344 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 414 transitions, 864 flow [2022-11-02 20:12:28,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:28,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:12:28,345 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:12:28,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:12:28,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:12:28,564 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 20:12:28,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:12:28,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1279722779, now seen corresponding path program 1 times [2022-11-02 20:12:28,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:12:28,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041063807] [2022-11-02 20:12:28,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:28,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:12:28,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:12:28,666 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-02 20:12:28,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:12:28,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041063807] [2022-11-02 20:12:28,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041063807] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:12:28,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710224684] [2022-11-02 20:12:28,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:28,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:12:28,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:12:28,671 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:12:28,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:12:28,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:12:28,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:12:28,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:12:28,843 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-02 20:12:28,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:12:28,877 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-02 20:12:28,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710224684] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:12:28,878 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:12:28,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-02 20:12:28,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124328576] [2022-11-02 20:12:28,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:12:28,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:12:28,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:12:28,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:12:28,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:12:28,886 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 400 out of 466 [2022-11-02 20:12:28,890 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 414 transitions, 864 flow. Second operand has 10 states, 10 states have (on average 402.2) internal successors, (4022), 10 states have internal predecessors, (4022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:28,890 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:12:28,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 400 of 466 [2022-11-02 20:12:28,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:12:29,171 INFO L130 PetriNetUnfolder]: 13/656 cut-off events. [2022-11-02 20:12:29,171 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-02 20:12:29,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 711 conditions, 656 events. 13/656 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3410 event pairs, 0 based on Foata normal form. 2/604 useless extension candidates. Maximal degree in co-relation 703. Up to 11 conditions per place. [2022-11-02 20:12:29,193 INFO L137 encePairwiseOnDemand]: 460/466 looper letters, 14 selfloop transitions, 9 changer transitions 0/424 dead transitions. [2022-11-02 20:12:29,193 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 424 transitions, 932 flow [2022-11-02 20:12:29,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:12:29,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:12:29,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3625 transitions. [2022-11-02 20:12:29,204 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8643299952312827 [2022-11-02 20:12:29,204 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3625 transitions. [2022-11-02 20:12:29,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3625 transitions. [2022-11-02 20:12:29,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:12:29,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3625 transitions. [2022-11-02 20:12:29,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 402.77777777777777) internal successors, (3625), 9 states have internal predecessors, (3625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:29,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 466.0) internal successors, (4660), 10 states have internal predecessors, (4660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:29,225 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 466.0) internal successors, (4660), 10 states have internal predecessors, (4660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:29,225 INFO L175 Difference]: Start difference. First operand has 413 places, 414 transitions, 864 flow. Second operand 9 states and 3625 transitions. [2022-11-02 20:12:29,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 424 transitions, 932 flow [2022-11-02 20:12:29,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 424 transitions, 930 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:12:29,235 INFO L231 Difference]: Finished difference. Result has 423 places, 420 transitions, 912 flow [2022-11-02 20:12:29,236 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=862, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=912, PETRI_PLACES=423, PETRI_TRANSITIONS=420} [2022-11-02 20:12:29,238 INFO L287 CegarLoopForPetriNet]: 411 programPoint places, 12 predicate places. [2022-11-02 20:12:29,238 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 420 transitions, 912 flow [2022-11-02 20:12:29,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 402.2) internal successors, (4022), 10 states have internal predecessors, (4022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:29,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:12:29,240 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:12:29,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:12:29,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:12:29,466 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 20:12:29,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:12:29,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1448737851, now seen corresponding path program 2 times [2022-11-02 20:12:29,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:12:29,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685017766] [2022-11-02 20:12:29,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:29,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:12:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:12:29,597 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-02 20:12:29,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:12:29,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685017766] [2022-11-02 20:12:29,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685017766] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:12:29,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779257998] [2022-11-02 20:12:29,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:12:29,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:12:29,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:12:29,600 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:12:29,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:12:29,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:12:29,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:12:29,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:12:29,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:12:29,797 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-02 20:12:29,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:12:29,911 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-02 20:12:29,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779257998] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:12:29,914 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:12:29,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-02 20:12:29,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700175718] [2022-11-02 20:12:29,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:12:29,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:12:29,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:12:29,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:12:29,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:12:29,926 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 400 out of 466 [2022-11-02 20:12:29,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 420 transitions, 912 flow. Second operand has 18 states, 18 states have (on average 402.3333333333333) internal successors, (7242), 18 states have internal predecessors, (7242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:29,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:12:29,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 400 of 466 [2022-11-02 20:12:29,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:12:30,365 INFO L130 PetriNetUnfolder]: 13/676 cut-off events. [2022-11-02 20:12:30,366 INFO L131 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2022-11-02 20:12:30,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 800 conditions, 676 events. 13/676 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3415 event pairs, 0 based on Foata normal form. 4/626 useless extension candidates. Maximal degree in co-relation 790. Up to 11 conditions per place. [2022-11-02 20:12:30,389 INFO L137 encePairwiseOnDemand]: 460/466 looper letters, 22 selfloop transitions, 21 changer transitions 0/444 dead transitions. [2022-11-02 20:12:30,390 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 444 transitions, 1106 flow [2022-11-02 20:12:30,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:12:30,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-02 20:12:30,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 8447 transitions. [2022-11-02 20:12:30,406 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8631718781933374 [2022-11-02 20:12:30,406 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 8447 transitions. [2022-11-02 20:12:30,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 8447 transitions. [2022-11-02 20:12:30,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:12:30,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 8447 transitions. [2022-11-02 20:12:30,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 402.23809523809524) internal successors, (8447), 21 states have internal predecessors, (8447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:30,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 466.0) internal successors, (10252), 22 states have internal predecessors, (10252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:30,448 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 466.0) internal successors, (10252), 22 states have internal predecessors, (10252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:30,449 INFO L175 Difference]: Start difference. First operand has 423 places, 420 transitions, 912 flow. Second operand 21 states and 8447 transitions. [2022-11-02 20:12:30,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 444 transitions, 1106 flow [2022-11-02 20:12:30,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 444 transitions, 1092 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-02 20:12:30,460 INFO L231 Difference]: Finished difference. Result has 447 places, 433 transitions, 1036 flow [2022-11-02 20:12:30,461 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=906, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1036, PETRI_PLACES=447, PETRI_TRANSITIONS=433} [2022-11-02 20:12:30,462 INFO L287 CegarLoopForPetriNet]: 411 programPoint places, 36 predicate places. [2022-11-02 20:12:30,462 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 433 transitions, 1036 flow [2022-11-02 20:12:30,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 402.3333333333333) internal successors, (7242), 18 states have internal predecessors, (7242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:30,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:12:30,466 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:12:30,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:12:30,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 20:12:30,690 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 20:12:30,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:12:30,691 INFO L85 PathProgramCache]: Analyzing trace with hash 738898555, now seen corresponding path program 3 times [2022-11-02 20:12:30,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:12:30,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290544855] [2022-11-02 20:12:30,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:30,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:12:30,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:12:31,029 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-02 20:12:31,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:12:31,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290544855] [2022-11-02 20:12:31,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290544855] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:12:31,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140207402] [2022-11-02 20:12:31,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:12:31,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:12:31,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:12:31,031 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:12:31,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:12:31,241 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-02 20:12:31,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:12:31,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:12:31,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:12:31,337 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-02 20:12:31,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:12:31,562 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-02 20:12:31,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140207402] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:12:31,563 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:12:31,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-02 20:12:31,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830288025] [2022-11-02 20:12:31,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:12:31,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-02 20:12:31,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:12:31,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-02 20:12:31,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-02 20:12:31,573 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 400 out of 466 [2022-11-02 20:12:31,581 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 433 transitions, 1036 flow. Second operand has 23 states, 23 states have (on average 402.4782608695652) internal successors, (9257), 23 states have internal predecessors, (9257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:31,581 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:12:31,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 400 of 466 [2022-11-02 20:12:31,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:12:32,197 INFO L130 PetriNetUnfolder]: 13/691 cut-off events. [2022-11-02 20:12:32,197 INFO L131 PetriNetUnfolder]: For 126/126 co-relation queries the response was YES. [2022-11-02 20:12:32,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 901 conditions, 691 events. 13/691 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3412 event pairs, 0 based on Foata normal form. 3/640 useless extension candidates. Maximal degree in co-relation 886. Up to 17 conditions per place. [2022-11-02 20:12:32,210 INFO L137 encePairwiseOnDemand]: 460/466 looper letters, 28 selfloop transitions, 30 changer transitions 0/459 dead transitions. [2022-11-02 20:12:32,210 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 459 transitions, 1298 flow [2022-11-02 20:12:32,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-02 20:12:32,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-02 20:12:32,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 12061 transitions. [2022-11-02 20:12:32,224 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8627324749642347 [2022-11-02 20:12:32,224 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 12061 transitions. [2022-11-02 20:12:32,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 12061 transitions. [2022-11-02 20:12:32,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:12:32,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 12061 transitions. [2022-11-02 20:12:32,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 402.03333333333336) internal successors, (12061), 30 states have internal predecessors, (12061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:32,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 466.0) internal successors, (14446), 31 states have internal predecessors, (14446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:32,274 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 466.0) internal successors, (14446), 31 states have internal predecessors, (14446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:32,275 INFO L175 Difference]: Start difference. First operand has 447 places, 433 transitions, 1036 flow. Second operand 30 states and 12061 transitions. [2022-11-02 20:12:32,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 459 transitions, 1298 flow [2022-11-02 20:12:32,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 459 transitions, 1268 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-11-02 20:12:32,287 INFO L231 Difference]: Finished difference. Result has 474 places, 443 transitions, 1164 flow [2022-11-02 20:12:32,288 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=1012, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1164, PETRI_PLACES=474, PETRI_TRANSITIONS=443} [2022-11-02 20:12:32,288 INFO L287 CegarLoopForPetriNet]: 411 programPoint places, 63 predicate places. [2022-11-02 20:12:32,288 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 443 transitions, 1164 flow [2022-11-02 20:12:32,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 402.4782608695652) internal successors, (9257), 23 states have internal predecessors, (9257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:32,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:12:32,292 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:12:32,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:12:32,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-02 20:12:32,500 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 20:12:32,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:12:32,500 INFO L85 PathProgramCache]: Analyzing trace with hash -75184896, now seen corresponding path program 4 times [2022-11-02 20:12:32,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:12:32,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519656102] [2022-11-02 20:12:32,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:32,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:12:32,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:12:32,530 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:12:32,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:12:32,556 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:12:32,556 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:12:32,556 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 27 remaining) [2022-11-02 20:12:32,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (25 of 27 remaining) [2022-11-02 20:12:32,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (24 of 27 remaining) [2022-11-02 20:12:32,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (23 of 27 remaining) [2022-11-02 20:12:32,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (22 of 27 remaining) [2022-11-02 20:12:32,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (21 of 27 remaining) [2022-11-02 20:12:32,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (20 of 27 remaining) [2022-11-02 20:12:32,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 27 remaining) [2022-11-02 20:12:32,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (18 of 27 remaining) [2022-11-02 20:12:32,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (17 of 27 remaining) [2022-11-02 20:12:32,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 27 remaining) [2022-11-02 20:12:32,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 27 remaining) [2022-11-02 20:12:32,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 27 remaining) [2022-11-02 20:12:32,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 27 remaining) [2022-11-02 20:12:32,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 27 remaining) [2022-11-02 20:12:32,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 27 remaining) [2022-11-02 20:12:32,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 27 remaining) [2022-11-02 20:12:32,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 27 remaining) [2022-11-02 20:12:32,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 27 remaining) [2022-11-02 20:12:32,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 27 remaining) [2022-11-02 20:12:32,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 27 remaining) [2022-11-02 20:12:32,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 27 remaining) [2022-11-02 20:12:32,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 27 remaining) [2022-11-02 20:12:32,561 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 27 remaining) [2022-11-02 20:12:32,561 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 27 remaining) [2022-11-02 20:12:32,561 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 27 remaining) [2022-11-02 20:12:32,561 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 27 remaining) [2022-11-02 20:12:32,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:12:32,561 INFO L444 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1] [2022-11-02 20:12:32,562 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:12:32,562 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-02 20:12:32,625 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-02 20:12:32,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 504 places, 572 transitions, 1174 flow [2022-11-02 20:12:33,002 INFO L130 PetriNetUnfolder]: 168/1312 cut-off events. [2022-11-02 20:12:33,003 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-02 20:12:33,038 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 8733 event pairs, 1 based on Foata normal form. 0/1077 useless extension candidates. Maximal degree in co-relation 927. Up to 16 conditions per place. [2022-11-02 20:12:33,038 INFO L82 GeneralOperation]: Start removeDead. Operand has 504 places, 572 transitions, 1174 flow [2022-11-02 20:12:33,057 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 504 places, 572 transitions, 1174 flow [2022-11-02 20:12:33,058 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:12:33,059 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;@38e6c613, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:12:33,059 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2022-11-02 20:12:33,076 INFO L130 PetriNetUnfolder]: 19/157 cut-off events. [2022-11-02 20:12:33,076 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 20:12:33,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:12:33,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:12:33,077 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-11-02 20:12:33,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:12:33,077 INFO L85 PathProgramCache]: Analyzing trace with hash 216228677, now seen corresponding path program 1 times [2022-11-02 20:12:33,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:12:33,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774822181] [2022-11-02 20:12:33,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:33,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:12:33,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:12:33,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:12:33,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:12:33,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774822181] [2022-11-02 20:12:33,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774822181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:12:33,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:12:33,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:12:33,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137405576] [2022-11-02 20:12:33,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:12:33,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:12:33,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:12:33,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:12:33,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:12:33,101 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 499 out of 572 [2022-11-02 20:12:33,102 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 572 transitions, 1174 flow. Second operand has 2 states, 2 states have (on average 500.0) internal successors, (1000), 2 states have internal predecessors, (1000), 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) [2022-11-02 20:12:33,102 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:12:33,103 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 499 of 572 [2022-11-02 20:12:33,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:12:33,450 INFO L130 PetriNetUnfolder]: 27/1160 cut-off events. [2022-11-02 20:12:33,450 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-11-02 20:12:33,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1204 conditions, 1160 events. 27/1160 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 7567 event pairs, 1 based on Foata normal form. 250/1305 useless extension candidates. Maximal degree in co-relation 824. Up to 16 conditions per place. [2022-11-02 20:12:33,486 INFO L137 encePairwiseOnDemand]: 510/572 looper letters, 6 selfloop transitions, 0 changer transitions 0/505 dead transitions. [2022-11-02 20:12:33,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 505 transitions, 1052 flow [2022-11-02 20:12:33,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:12:33,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:12:33,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1066 transitions. [2022-11-02 20:12:33,489 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9318181818181818 [2022-11-02 20:12:33,489 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1066 transitions. [2022-11-02 20:12:33,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1066 transitions. [2022-11-02 20:12:33,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:12:33,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1066 transitions. [2022-11-02 20:12:33,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 533.0) internal successors, (1066), 2 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:33,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 572.0) internal successors, (1716), 3 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:33,494 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 572.0) internal successors, (1716), 3 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:33,494 INFO L175 Difference]: Start difference. First operand has 504 places, 572 transitions, 1174 flow. Second operand 2 states and 1066 transitions. [2022-11-02 20:12:33,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 505 transitions, 1052 flow [2022-11-02 20:12:33,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 505 transitions, 1052 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:12:33,503 INFO L231 Difference]: Finished difference. Result has 500 places, 505 transitions, 1040 flow [2022-11-02 20:12:33,504 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=572, PETRI_DIFFERENCE_MINUEND_FLOW=1040, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=1040, PETRI_PLACES=500, PETRI_TRANSITIONS=505} [2022-11-02 20:12:33,505 INFO L287 CegarLoopForPetriNet]: 504 programPoint places, -4 predicate places. [2022-11-02 20:12:33,505 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 505 transitions, 1040 flow [2022-11-02 20:12:33,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 500.0) internal successors, (1000), 2 states have internal predecessors, (1000), 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) [2022-11-02 20:12:33,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:12:33,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:12:33,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:12:33,506 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-11-02 20:12:33,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:12:33,507 INFO L85 PathProgramCache]: Analyzing trace with hash 207046708, now seen corresponding path program 1 times [2022-11-02 20:12:33,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:12:33,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580019511] [2022-11-02 20:12:33,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:33,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:12:33,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:12:33,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:12:33,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:12:33,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580019511] [2022-11-02 20:12:33,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580019511] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:12:33,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:12:33,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:12:33,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993776160] [2022-11-02 20:12:33,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:12:33,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:12:33,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:12:33,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:12:33,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:12:33,544 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 492 out of 572 [2022-11-02 20:12:33,545 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 505 transitions, 1040 flow. Second operand has 3 states, 3 states have (on average 493.0) internal successors, (1479), 3 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:33,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:12:33,546 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 492 of 572 [2022-11-02 20:12:33,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:12:33,913 INFO L130 PetriNetUnfolder]: 27/1164 cut-off events. [2022-11-02 20:12:33,913 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-11-02 20:12:33,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1220 conditions, 1164 events. 27/1164 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 7565 event pairs, 1 based on Foata normal form. 0/1059 useless extension candidates. Maximal degree in co-relation 1214. Up to 23 conditions per place. [2022-11-02 20:12:33,945 INFO L137 encePairwiseOnDemand]: 569/572 looper letters, 15 selfloop transitions, 2 changer transitions 0/509 dead transitions. [2022-11-02 20:12:33,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 509 transitions, 1082 flow [2022-11-02 20:12:33,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:12:33,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:12:33,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1494 transitions. [2022-11-02 20:12:33,947 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8706293706293706 [2022-11-02 20:12:33,948 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1494 transitions. [2022-11-02 20:12:33,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1494 transitions. [2022-11-02 20:12:33,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:12:33,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1494 transitions. [2022-11-02 20:12:33,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 498.0) internal successors, (1494), 3 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:33,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 572.0) internal successors, (2288), 4 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:33,954 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 572.0) internal successors, (2288), 4 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:33,954 INFO L175 Difference]: Start difference. First operand has 500 places, 505 transitions, 1040 flow. Second operand 3 states and 1494 transitions. [2022-11-02 20:12:33,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 509 transitions, 1082 flow [2022-11-02 20:12:33,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 509 transitions, 1082 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:12:33,964 INFO L231 Difference]: Finished difference. Result has 503 places, 506 transitions, 1052 flow [2022-11-02 20:12:33,965 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=572, PETRI_DIFFERENCE_MINUEND_FLOW=1040, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1052, PETRI_PLACES=503, PETRI_TRANSITIONS=506} [2022-11-02 20:12:33,965 INFO L287 CegarLoopForPetriNet]: 504 programPoint places, -1 predicate places. [2022-11-02 20:12:33,965 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 506 transitions, 1052 flow [2022-11-02 20:12:33,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 493.0) internal successors, (1479), 3 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:33,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:12:33,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:12:33,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 20:12:33,967 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-11-02 20:12:33,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:12:33,968 INFO L85 PathProgramCache]: Analyzing trace with hash 322414749, now seen corresponding path program 1 times [2022-11-02 20:12:33,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:12:33,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304912049] [2022-11-02 20:12:33,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:33,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:12:33,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:12:34,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:12:34,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:12:34,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304912049] [2022-11-02 20:12:34,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304912049] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:12:34,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283903765] [2022-11-02 20:12:34,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:34,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:12:34,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:12:34,029 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:12:34,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:12:34,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:12:34,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:12:34,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:12:34,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:12:34,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:12:34,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283903765] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:12:34,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:12:34,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-02 20:12:34,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682590099] [2022-11-02 20:12:34,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:12:34,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:12:34,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:12:34,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:12:34,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:12:34,167 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 492 out of 572 [2022-11-02 20:12:34,168 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 506 transitions, 1052 flow. Second operand has 3 states, 3 states have (on average 493.0) internal successors, (1479), 3 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:34,168 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:12:34,168 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 492 of 572 [2022-11-02 20:12:34,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:12:34,505 INFO L130 PetriNetUnfolder]: 23/999 cut-off events. [2022-11-02 20:12:34,505 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-11-02 20:12:34,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1070 conditions, 999 events. 23/999 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 6121 event pairs, 1 based on Foata normal form. 0/911 useless extension candidates. Maximal degree in co-relation 1062. Up to 30 conditions per place. [2022-11-02 20:12:34,537 INFO L137 encePairwiseOnDemand]: 569/572 looper letters, 15 selfloop transitions, 2 changer transitions 0/510 dead transitions. [2022-11-02 20:12:34,537 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 510 transitions, 1094 flow [2022-11-02 20:12:34,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:12:34,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:12:34,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1494 transitions. [2022-11-02 20:12:34,540 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8706293706293706 [2022-11-02 20:12:34,540 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1494 transitions. [2022-11-02 20:12:34,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1494 transitions. [2022-11-02 20:12:34,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:12:34,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1494 transitions. [2022-11-02 20:12:34,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 498.0) internal successors, (1494), 3 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:34,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 572.0) internal successors, (2288), 4 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:34,548 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 572.0) internal successors, (2288), 4 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:34,548 INFO L175 Difference]: Start difference. First operand has 503 places, 506 transitions, 1052 flow. Second operand 3 states and 1494 transitions. [2022-11-02 20:12:34,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 510 transitions, 1094 flow [2022-11-02 20:12:34,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 510 transitions, 1092 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:12:34,557 INFO L231 Difference]: Finished difference. Result has 505 places, 507 transitions, 1062 flow [2022-11-02 20:12:34,558 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=572, PETRI_DIFFERENCE_MINUEND_FLOW=1050, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1062, PETRI_PLACES=505, PETRI_TRANSITIONS=507} [2022-11-02 20:12:34,560 INFO L287 CegarLoopForPetriNet]: 504 programPoint places, 1 predicate places. [2022-11-02 20:12:34,560 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 507 transitions, 1062 flow [2022-11-02 20:12:34,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 493.0) internal successors, (1479), 3 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:34,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:12:34,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:12:34,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:12:34,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-02 20:12:34,786 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-11-02 20:12:34,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:12:34,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1422323447, now seen corresponding path program 1 times [2022-11-02 20:12:34,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:12:34,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553161933] [2022-11-02 20:12:34,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:34,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:12:34,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:12:34,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:12:34,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:12:34,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553161933] [2022-11-02 20:12:34,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553161933] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:12:34,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162146515] [2022-11-02 20:12:34,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:34,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:12:34,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:12:34,858 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:12:34,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 20:12:34,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:12:34,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:12:35,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:12:35,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:12:35,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:12:35,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162146515] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:12:35,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:12:35,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-02 20:12:35,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956659772] [2022-11-02 20:12:35,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:12:35,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:12:35,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:12:35,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:12:35,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:12:35,017 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 491 out of 572 [2022-11-02 20:12:35,018 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 507 transitions, 1062 flow. Second operand has 3 states, 3 states have (on average 492.6666666666667) internal successors, (1478), 3 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:35,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:12:35,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 491 of 572 [2022-11-02 20:12:35,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:12:35,647 INFO L130 PetriNetUnfolder]: 26/1251 cut-off events. [2022-11-02 20:12:35,647 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-11-02 20:12:35,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1343 conditions, 1251 events. 26/1251 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 7286 event pairs, 1 based on Foata normal form. 0/1145 useless extension candidates. Maximal degree in co-relation 1334. Up to 36 conditions per place. [2022-11-02 20:12:35,709 INFO L137 encePairwiseOnDemand]: 569/572 looper letters, 16 selfloop transitions, 2 changer transitions 0/511 dead transitions. [2022-11-02 20:12:35,710 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 511 transitions, 1106 flow [2022-11-02 20:12:35,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:12:35,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:12:35,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1492 transitions. [2022-11-02 20:12:35,714 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8694638694638694 [2022-11-02 20:12:35,714 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1492 transitions. [2022-11-02 20:12:35,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1492 transitions. [2022-11-02 20:12:35,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:12:35,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1492 transitions. [2022-11-02 20:12:35,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 497.3333333333333) internal successors, (1492), 3 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:35,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 572.0) internal successors, (2288), 4 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:35,722 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 572.0) internal successors, (2288), 4 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:35,723 INFO L175 Difference]: Start difference. First operand has 505 places, 507 transitions, 1062 flow. Second operand 3 states and 1492 transitions. [2022-11-02 20:12:35,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 511 transitions, 1106 flow [2022-11-02 20:12:35,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 511 transitions, 1104 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:12:35,734 INFO L231 Difference]: Finished difference. Result has 507 places, 508 transitions, 1072 flow [2022-11-02 20:12:35,736 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=572, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1072, PETRI_PLACES=507, PETRI_TRANSITIONS=508} [2022-11-02 20:12:35,736 INFO L287 CegarLoopForPetriNet]: 504 programPoint places, 3 predicate places. [2022-11-02 20:12:35,736 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 508 transitions, 1072 flow [2022-11-02 20:12:35,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 492.6666666666667) internal successors, (1478), 3 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:35,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:12:35,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:12:35,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:12:35,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-02 20:12:35,958 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-11-02 20:12:35,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:12:35,959 INFO L85 PathProgramCache]: Analyzing trace with hash 775634102, now seen corresponding path program 1 times [2022-11-02 20:12:35,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:12:35,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66001065] [2022-11-02 20:12:35,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:35,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:12:35,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:12:36,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:12:36,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:12:36,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66001065] [2022-11-02 20:12:36,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66001065] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:12:36,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165521486] [2022-11-02 20:12:36,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:36,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:12:36,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:12:36,029 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:12:36,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 20:12:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:12:36,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:12:36,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:12:36,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:12:36,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:12:36,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:12:36,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165521486] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:12:36,238 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:12:36,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-02 20:12:36,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144114074] [2022-11-02 20:12:36,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:12:36,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:12:36,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:12:36,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:12:36,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:12:36,245 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 491 out of 572 [2022-11-02 20:12:36,249 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 508 transitions, 1072 flow. Second operand has 10 states, 10 states have (on average 493.1) internal successors, (4931), 10 states have internal predecessors, (4931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:36,249 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:12:36,249 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 491 of 572 [2022-11-02 20:12:36,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:12:36,836 INFO L130 PetriNetUnfolder]: 26/1258 cut-off events. [2022-11-02 20:12:36,836 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2022-11-02 20:12:36,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1353 conditions, 1258 events. 26/1258 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 7278 event pairs, 1 based on Foata normal form. 2/1157 useless extension candidates. Maximal degree in co-relation 1343. Up to 20 conditions per place. [2022-11-02 20:12:36,889 INFO L137 encePairwiseOnDemand]: 566/572 looper letters, 16 selfloop transitions, 9 changer transitions 0/518 dead transitions. [2022-11-02 20:12:36,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 518 transitions, 1144 flow [2022-11-02 20:12:36,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:12:36,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:12:36,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4446 transitions. [2022-11-02 20:12:36,897 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8636363636363636 [2022-11-02 20:12:36,897 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4446 transitions. [2022-11-02 20:12:36,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4446 transitions. [2022-11-02 20:12:36,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:12:36,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4446 transitions. [2022-11-02 20:12:36,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 494.0) internal successors, (4446), 9 states have internal predecessors, (4446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:36,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 572.0) internal successors, (5720), 10 states have internal predecessors, (5720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:36,913 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 572.0) internal successors, (5720), 10 states have internal predecessors, (5720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:36,913 INFO L175 Difference]: Start difference. First operand has 507 places, 508 transitions, 1072 flow. Second operand 9 states and 4446 transitions. [2022-11-02 20:12:36,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 518 transitions, 1144 flow [2022-11-02 20:12:36,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 518 transitions, 1142 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:12:36,925 INFO L231 Difference]: Finished difference. Result has 517 places, 514 transitions, 1120 flow [2022-11-02 20:12:36,927 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=572, PETRI_DIFFERENCE_MINUEND_FLOW=1070, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1120, PETRI_PLACES=517, PETRI_TRANSITIONS=514} [2022-11-02 20:12:36,927 INFO L287 CegarLoopForPetriNet]: 504 programPoint places, 13 predicate places. [2022-11-02 20:12:36,928 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 514 transitions, 1120 flow [2022-11-02 20:12:36,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 493.1) internal successors, (4931), 10 states have internal predecessors, (4931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:36,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:12:36,929 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:12:36,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:12:37,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-02 20:12:37,150 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-11-02 20:12:37,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:12:37,151 INFO L85 PathProgramCache]: Analyzing trace with hash 554692374, now seen corresponding path program 2 times [2022-11-02 20:12:37,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:12:37,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541244067] [2022-11-02 20:12:37,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:37,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:12:37,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:12:37,309 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:12:37,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:12:37,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541244067] [2022-11-02 20:12:37,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541244067] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:12:37,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083288499] [2022-11-02 20:12:37,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:12:37,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:12:37,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:12:37,312 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:12:37,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfb9002-034e-42e6-82c0-0e69ce8b047e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-02 20:12:37,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:12:37,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:12:37,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:12:37,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:12:37,522 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:12:37,543 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 20:12:37,586 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:12:37,587 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-02 20:12:37,635 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:12:37,638 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-02 20:12:37,679 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-02 20:12:37,679 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:12:37,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083288499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:12:37,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:12:37,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2022-11-02 20:12:37,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948859425] [2022-11-02 20:12:37,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:12:37,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:12:37,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:12:37,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:12:37,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:12:37,684 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 334 out of 572 [2022-11-02 20:12:37,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 514 transitions, 1120 flow. Second operand has 6 states, 6 states have (on average 335.6666666666667) internal successors, (2014), 6 states have internal predecessors, (2014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:37,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:12:37,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 334 of 572 [2022-11-02 20:12:37,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand