./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread/queue_ok_longest.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 38b53e6a 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_bebeef1d-6ad5-42c7-a295-fa7df8e0b69b/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebeef1d-6ad5-42c7-a295-fa7df8e0b69b/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebeef1d-6ad5-42c7-a295-fa7df8e0b69b/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebeef1d-6ad5-42c7-a295-fa7df8e0b69b/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue_ok_longest.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebeef1d-6ad5-42c7-a295-fa7df8e0b69b/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebeef1d-6ad5-42c7-a295-fa7df8e0b69b/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0e9bc4a9a6dcd238ac18925269a0bd7c8c54c2dafb57744151e37b58cf6eab8d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 17:13:42,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:13:42,863 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:13:42,909 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:13:42,910 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:13:42,914 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:13:42,927 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:13:42,931 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:13:42,933 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:13:42,935 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:13:42,937 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:13:42,940 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:13:42,942 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:13:42,946 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:13:42,949 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:13:42,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:13:42,953 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:13:42,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:13:42,958 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:13:42,966 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:13:42,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:13:42,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:13:42,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:13:42,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:13:42,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:13:42,994 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:13:42,994 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:13:42,995 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:13:42,996 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:13:42,997 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:13:43,000 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:13:43,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:13:43,003 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:13:43,005 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:13:43,007 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:13:43,008 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:13:43,009 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:13:43,009 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:13:43,009 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:13:43,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:13:43,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:13:43,014 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebeef1d-6ad5-42c7-a295-fa7df8e0b69b/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-25 17:13:43,057 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:13:43,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:13:43,059 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:13:43,059 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:13:43,060 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:13:43,061 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:13:43,062 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:13:43,062 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:13:43,063 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:13:43,063 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:13:43,065 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:13:43,065 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:13:43,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:13:43,065 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:13:43,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:13:43,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:13:43,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:13:43,067 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:13:43,067 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-25 17:13:43,067 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:13:43,067 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:13:43,068 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:13:43,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:13:43,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:13:43,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:13:43,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:13:43,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:13:43,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:13:43,071 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:13:43,071 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:13:43,071 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:13:43,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:13:43,072 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:13:43,072 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:13:43,073 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:13:43,073 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:13:43,073 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebeef1d-6ad5-42c7-a295-fa7df8e0b69b/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebeef1d-6ad5-42c7-a295-fa7df8e0b69b/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e9bc4a9a6dcd238ac18925269a0bd7c8c54c2dafb57744151e37b58cf6eab8d [2022-11-25 17:13:43,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:13:43,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:13:43,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:13:43,509 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:13:43,510 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:13:43,511 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebeef1d-6ad5-42c7-a295-fa7df8e0b69b/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread/queue_ok_longest.i [2022-11-25 17:13:46,937 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:13:47,282 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:13:47,283 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebeef1d-6ad5-42c7-a295-fa7df8e0b69b/sv-benchmarks/c/pthread/queue_ok_longest.i [2022-11-25 17:13:47,302 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebeef1d-6ad5-42c7-a295-fa7df8e0b69b/bin/uautomizer-ZsLfNo2U6R/data/097cd0234/8125d4b9789945f89b09f0a6483d6de8/FLAGc7601cf5a [2022-11-25 17:13:47,319 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebeef1d-6ad5-42c7-a295-fa7df8e0b69b/bin/uautomizer-ZsLfNo2U6R/data/097cd0234/8125d4b9789945f89b09f0a6483d6de8 [2022-11-25 17:13:47,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:13:47,324 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:13:47,326 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:13:47,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:13:47,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:13:47,332 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:13:47" (1/1) ... [2022-11-25 17:13:47,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12361c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:47, skipping insertion in model container [2022-11-25 17:13:47,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:13:47" (1/1) ... [2022-11-25 17:13:47,342 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:13:47,391 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:13:48,092 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebeef1d-6ad5-42c7-a295-fa7df8e0b69b/sv-benchmarks/c/pthread/queue_ok_longest.i[43280,43293] [2022-11-25 17:13:48,097 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebeef1d-6ad5-42c7-a295-fa7df8e0b69b/sv-benchmarks/c/pthread/queue_ok_longest.i[43553,43566] [2022-11-25 17:13:48,103 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:13:48,118 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:13:48,186 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebeef1d-6ad5-42c7-a295-fa7df8e0b69b/sv-benchmarks/c/pthread/queue_ok_longest.i[43280,43293] [2022-11-25 17:13:48,191 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebeef1d-6ad5-42c7-a295-fa7df8e0b69b/sv-benchmarks/c/pthread/queue_ok_longest.i[43553,43566] [2022-11-25 17:13:48,194 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:13:48,277 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:13:48,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:48 WrapperNode [2022-11-25 17:13:48,278 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:13:48,280 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:13:48,280 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:13:48,281 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:13:48,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:48" (1/1) ... [2022-11-25 17:13:48,342 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:48" (1/1) ... [2022-11-25 17:13:48,452 INFO L138 Inliner]: procedures = 274, calls = 57, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 387 [2022-11-25 17:13:48,456 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:13:48,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:13:48,458 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:13:48,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:13:48,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:48" (1/1) ... [2022-11-25 17:13:48,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:48" (1/1) ... [2022-11-25 17:13:48,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:48" (1/1) ... [2022-11-25 17:13:48,510 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:48" (1/1) ... [2022-11-25 17:13:48,555 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:48" (1/1) ... [2022-11-25 17:13:48,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:48" (1/1) ... [2022-11-25 17:13:48,578 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:48" (1/1) ... [2022-11-25 17:13:48,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:48" (1/1) ... [2022-11-25 17:13:48,586 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:13:48,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:13:48,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:13:48,588 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:13:48,589 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:48" (1/1) ... [2022-11-25 17:13:48,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:13:48,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebeef1d-6ad5-42c7-a295-fa7df8e0b69b/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:13:48,646 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebeef1d-6ad5-42c7-a295-fa7df8e0b69b/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:13:48,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebeef1d-6ad5-42c7-a295-fa7df8e0b69b/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:13:48,721 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-25 17:13:48,722 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-25 17:13:48,722 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-25 17:13:48,722 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-25 17:13:48,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:13:48,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:13:48,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:13:48,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:13:48,723 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 17:13:48,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:13:48,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:13:48,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:13:48,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:13:48,727 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:13:48,988 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:13:48,991 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:13:49,819 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:13:49,834 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:13:49,840 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-25 17:13:49,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:13:49 BoogieIcfgContainer [2022-11-25 17:13:49,847 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:13:49,852 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:13:49,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:13:49,855 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:13:49,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:13:47" (1/3) ... [2022-11-25 17:13:49,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dbdcd02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:13:49, skipping insertion in model container [2022-11-25 17:13:49,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:13:48" (2/3) ... [2022-11-25 17:13:49,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dbdcd02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:13:49, skipping insertion in model container [2022-11-25 17:13:49,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:13:49" (3/3) ... [2022-11-25 17:13:49,861 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok_longest.i [2022-11-25 17:13:49,871 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:13:49,883 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:13:49,883 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 35 error locations. [2022-11-25 17:13:49,884 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:13:50,128 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 17:13:50,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 441 places, 447 transitions, 910 flow [2022-11-25 17:13:50,486 INFO L130 PetriNetUnfolder]: 13/445 cut-off events. [2022-11-25 17:13:50,487 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:13:50,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 454 conditions, 445 events. 13/445 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 784 event pairs, 0 based on Foata normal form. 0/397 useless extension candidates. Maximal degree in co-relation 315. Up to 3 conditions per place. [2022-11-25 17:13:50,506 INFO L82 GeneralOperation]: Start removeDead. Operand has 441 places, 447 transitions, 910 flow [2022-11-25 17:13:50,524 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 429 places, 435 transitions, 879 flow [2022-11-25 17:13:50,531 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:13:50,563 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 429 places, 435 transitions, 879 flow [2022-11-25 17:13:50,571 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 429 places, 435 transitions, 879 flow [2022-11-25 17:13:50,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 429 places, 435 transitions, 879 flow [2022-11-25 17:13:50,720 INFO L130 PetriNetUnfolder]: 13/435 cut-off events. [2022-11-25 17:13:50,721 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 17:13:50,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443 conditions, 435 events. 13/435 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 710 event pairs, 0 based on Foata normal form. 0/387 useless extension candidates. Maximal degree in co-relation 315. Up to 3 conditions per place. [2022-11-25 17:13:50,751 INFO L119 LiptonReduction]: Number of co-enabled transitions 53036 [2022-11-25 17:14:51,803 WARN L233 SmtUtils]: Spent 24.87s on a formula simplification. DAG size of input: 202 DAG size of output: 196 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:15:07,479 WARN L233 SmtUtils]: Spent 15.67s on a formula simplification that was a NOOP. DAG size: 192 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:15:26,014 WARN L233 SmtUtils]: Spent 18.53s on a formula simplification. DAG size of input: 202 DAG size of output: 196 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:15:36,670 WARN L233 SmtUtils]: Spent 10.65s on a formula simplification that was a NOOP. DAG size: 192 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:16:07,885 WARN L233 SmtUtils]: Spent 30.73s on a formula simplification. DAG size of input: 214 DAG size of output: 209 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:16:26,636 WARN L233 SmtUtils]: Spent 18.75s on a formula simplification that was a NOOP. DAG size: 207 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:16:56,088 WARN L233 SmtUtils]: Spent 29.45s on a formula simplification. DAG size of input: 217 DAG size of output: 212 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:17:11,879 WARN L233 SmtUtils]: Spent 15.79s on a formula simplification that was a NOOP. DAG size: 210 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:17:11,895 INFO L134 LiptonReduction]: Checked pairs total: 419781 [2022-11-25 17:17:11,895 INFO L136 LiptonReduction]: Total number of compositions: 300 [2022-11-25 17:17:11,912 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:17:11,916 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;@7507c33e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:17:11,916 INFO L358 AbstractCegarLoop]: Starting to check reachability of 63 error locations. [2022-11-25 17:17:11,918 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-11-25 17:17:11,918 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:17:11,918 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:17:11,919 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-25 17:17:11,920 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2022-11-25 17:17:11,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:11,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1570, now seen corresponding path program 1 times [2022-11-25 17:17:11,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:11,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615964678] [2022-11-25 17:17:11,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:11,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:12,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:12,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:17:12,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:12,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615964678] [2022-11-25 17:17:12,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615964678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:17:12,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:17:12,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 17:17:12,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577446378] [2022-11-25 17:17:12,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:17:12,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:17:12,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:12,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:17:12,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:17:12,128 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 747 [2022-11-25 17:17:12,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 203 transitions, 415 flow. Second operand has 2 states, 2 states have (on average 436.5) internal successors, (873), 2 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:12,163 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:17:12,163 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 747 [2022-11-25 17:17:12,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:17:13,709 INFO L130 PetriNetUnfolder]: 2479/7772 cut-off events. [2022-11-25 17:17:13,709 INFO L131 PetriNetUnfolder]: For 116/166 co-relation queries the response was YES. [2022-11-25 17:17:13,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11842 conditions, 7772 events. 2479/7772 cut-off events. For 116/166 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 65301 event pairs, 2097 based on Foata normal form. 0/7215 useless extension candidates. Maximal degree in co-relation 11402. Up to 3987 conditions per place. [2022-11-25 17:17:13,763 INFO L137 encePairwiseOnDemand]: 740/747 looper letters, 65 selfloop transitions, 0 changer transitions 0/196 dead transitions. [2022-11-25 17:17:13,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 196 transitions, 531 flow [2022-11-25 17:17:13,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:17:13,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 17:17:13,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 944 transitions. [2022-11-25 17:17:13,791 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6318607764390897 [2022-11-25 17:17:13,792 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 944 transitions. [2022-11-25 17:17:13,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 944 transitions. [2022-11-25 17:17:13,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:17:13,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 944 transitions. [2022-11-25 17:17:13,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 472.0) internal successors, (944), 2 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:13,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 747.0) internal successors, (2241), 3 states have internal predecessors, (2241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:13,818 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 747.0) internal successors, (2241), 3 states have internal predecessors, (2241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:13,821 INFO L175 Difference]: Start difference. First operand has 203 places, 203 transitions, 415 flow. Second operand 2 states and 944 transitions. [2022-11-25 17:17:13,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 196 transitions, 531 flow [2022-11-25 17:17:13,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 196 transitions, 526 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 17:17:13,835 INFO L231 Difference]: Finished difference. Result has 194 places, 196 transitions, 396 flow [2022-11-25 17:17:13,840 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=747, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=396, PETRI_PLACES=194, PETRI_TRANSITIONS=196} [2022-11-25 17:17:13,844 INFO L288 CegarLoopForPetriNet]: 203 programPoint places, -9 predicate places. [2022-11-25 17:17:13,845 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 196 transitions, 396 flow [2022-11-25 17:17:13,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 436.5) internal successors, (873), 2 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:13,846 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:17:13,846 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:17:13,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:17:13,848 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2022-11-25 17:17:13,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:13,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1499681632, now seen corresponding path program 1 times [2022-11-25 17:17:13,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:13,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385471122] [2022-11-25 17:17:13,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:13,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:13,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:14,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:17:14,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:14,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385471122] [2022-11-25 17:17:14,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385471122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:17:14,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:17:14,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:17:14,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139258951] [2022-11-25 17:17:14,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:17:14,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:17:14,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:14,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:17:14,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:17:14,143 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 430 out of 747 [2022-11-25 17:17:14,145 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 196 transitions, 396 flow. Second operand has 3 states, 3 states have (on average 431.6666666666667) internal successors, (1295), 3 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:14,145 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:17:14,145 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 430 of 747 [2022-11-25 17:17:14,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:17:15,606 INFO L130 PetriNetUnfolder]: 2859/8607 cut-off events. [2022-11-25 17:17:15,606 INFO L131 PetriNetUnfolder]: For 20/113 co-relation queries the response was YES. [2022-11-25 17:17:15,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13351 conditions, 8607 events. 2859/8607 cut-off events. For 20/113 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 73929 event pairs, 543 based on Foata normal form. 1/7824 useless extension candidates. Maximal degree in co-relation 13348. Up to 3496 conditions per place. [2022-11-25 17:17:15,687 INFO L137 encePairwiseOnDemand]: 741/747 looper letters, 123 selfloop transitions, 5 changer transitions 0/256 dead transitions. [2022-11-25 17:17:15,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 256 transitions, 775 flow [2022-11-25 17:17:15,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:17:15,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:17:15,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1419 transitions. [2022-11-25 17:17:15,692 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6331994645247657 [2022-11-25 17:17:15,692 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1419 transitions. [2022-11-25 17:17:15,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1419 transitions. [2022-11-25 17:17:15,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:17:15,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1419 transitions. [2022-11-25 17:17:15,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 473.0) internal successors, (1419), 3 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:15,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 747.0) internal successors, (2988), 4 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:15,705 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 747.0) internal successors, (2988), 4 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:15,706 INFO L175 Difference]: Start difference. First operand has 194 places, 196 transitions, 396 flow. Second operand 3 states and 1419 transitions. [2022-11-25 17:17:15,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 256 transitions, 775 flow [2022-11-25 17:17:15,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 256 transitions, 775 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:17:15,716 INFO L231 Difference]: Finished difference. Result has 198 places, 200 transitions, 434 flow [2022-11-25 17:17:15,717 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=747, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=434, PETRI_PLACES=198, PETRI_TRANSITIONS=200} [2022-11-25 17:17:15,718 INFO L288 CegarLoopForPetriNet]: 203 programPoint places, -5 predicate places. [2022-11-25 17:17:15,719 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 200 transitions, 434 flow [2022-11-25 17:17:15,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 431.6666666666667) internal successors, (1295), 3 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:15,720 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:17:15,720 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:17:15,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:17:15,721 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2022-11-25 17:17:15,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:15,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1918665186, now seen corresponding path program 1 times [2022-11-25 17:17:15,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:15,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536239987] [2022-11-25 17:17:15,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:15,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:15,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:17:15,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:15,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536239987] [2022-11-25 17:17:15,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536239987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:17:15,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:17:15,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:17:15,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968129534] [2022-11-25 17:17:15,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:17:15,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:17:15,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:15,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:17:15,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:17:16,015 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 430 out of 747 [2022-11-25 17:17:16,017 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 200 transitions, 434 flow. Second operand has 3 states, 3 states have (on average 432.3333333333333) internal successors, (1297), 3 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:16,017 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:17:16,017 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 430 of 747 [2022-11-25 17:17:16,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:17:17,635 INFO L130 PetriNetUnfolder]: 3049/9738 cut-off events. [2022-11-25 17:17:17,635 INFO L131 PetriNetUnfolder]: For 413/552 co-relation queries the response was YES. [2022-11-25 17:17:17,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15192 conditions, 9738 events. 3049/9738 cut-off events. For 413/552 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 88358 event pairs, 696 based on Foata normal form. 57/8954 useless extension candidates. Maximal degree in co-relation 15187. Up to 3618 conditions per place. [2022-11-25 17:17:17,713 INFO L137 encePairwiseOnDemand]: 741/747 looper letters, 124 selfloop transitions, 5 changer transitions 0/258 dead transitions. [2022-11-25 17:17:17,713 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 258 transitions, 815 flow [2022-11-25 17:17:17,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:17:17,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:17:17,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1417 transitions. [2022-11-25 17:17:17,718 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6323070058009818 [2022-11-25 17:17:17,719 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1417 transitions. [2022-11-25 17:17:17,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1417 transitions. [2022-11-25 17:17:17,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:17:17,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1417 transitions. [2022-11-25 17:17:17,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 472.3333333333333) internal successors, (1417), 3 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:17,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 747.0) internal successors, (2988), 4 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:17,733 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 747.0) internal successors, (2988), 4 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:17,733 INFO L175 Difference]: Start difference. First operand has 198 places, 200 transitions, 434 flow. Second operand 3 states and 1417 transitions. [2022-11-25 17:17:17,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 258 transitions, 815 flow [2022-11-25 17:17:17,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 258 transitions, 803 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:17:17,742 INFO L231 Difference]: Finished difference. Result has 200 places, 204 transitions, 462 flow [2022-11-25 17:17:17,742 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=747, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=462, PETRI_PLACES=200, PETRI_TRANSITIONS=204} [2022-11-25 17:17:17,744 INFO L288 CegarLoopForPetriNet]: 203 programPoint places, -3 predicate places. [2022-11-25 17:17:17,744 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 204 transitions, 462 flow [2022-11-25 17:17:17,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 432.3333333333333) internal successors, (1297), 3 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:17,746 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:17:17,746 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:17:17,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:17:17,746 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2022-11-25 17:17:17,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:17,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1992270440, now seen corresponding path program 1 times [2022-11-25 17:17:17,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:17,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787629471] [2022-11-25 17:17:17,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:17,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:17,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:17,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:17:17,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:17,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787629471] [2022-11-25 17:17:17,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787629471] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:17:17,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:17:17,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:17:17,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731785488] [2022-11-25 17:17:17,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:17:17,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:17:17,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:17,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:17:17,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:17:17,876 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 432 out of 747 [2022-11-25 17:17:17,878 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 204 transitions, 462 flow. Second operand has 3 states, 3 states have (on average 434.0) internal successors, (1302), 3 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:17,878 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:17:17,879 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 432 of 747 [2022-11-25 17:17:17,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:17:20,355 INFO L130 PetriNetUnfolder]: 4580/15205 cut-off events. [2022-11-25 17:17:20,355 INFO L131 PetriNetUnfolder]: For 861/1103 co-relation queries the response was YES. [2022-11-25 17:17:20,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23687 conditions, 15205 events. 4580/15205 cut-off events. For 861/1103 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 144574 event pairs, 2515 based on Foata normal form. 55/14266 useless extension candidates. Maximal degree in co-relation 23681. Up to 4761 conditions per place. [2022-11-25 17:17:20,585 INFO L137 encePairwiseOnDemand]: 744/747 looper letters, 120 selfloop transitions, 2 changer transitions 0/256 dead transitions. [2022-11-25 17:17:20,585 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 256 transitions, 824 flow [2022-11-25 17:17:20,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:17:20,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:17:20,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1414 transitions. [2022-11-25 17:17:20,589 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6309683177153057 [2022-11-25 17:17:20,589 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1414 transitions. [2022-11-25 17:17:20,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1414 transitions. [2022-11-25 17:17:20,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:17:20,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1414 transitions. [2022-11-25 17:17:20,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 471.3333333333333) internal successors, (1414), 3 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:20,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 747.0) internal successors, (2988), 4 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:20,600 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 747.0) internal successors, (2988), 4 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:20,600 INFO L175 Difference]: Start difference. First operand has 200 places, 204 transitions, 462 flow. Second operand 3 states and 1414 transitions. [2022-11-25 17:17:20,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 256 transitions, 824 flow [2022-11-25 17:17:20,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 256 transitions, 810 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:17:20,611 INFO L231 Difference]: Finished difference. Result has 201 places, 205 transitions, 464 flow [2022-11-25 17:17:20,611 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=747, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=464, PETRI_PLACES=201, PETRI_TRANSITIONS=205} [2022-11-25 17:17:20,613 INFO L288 CegarLoopForPetriNet]: 203 programPoint places, -2 predicate places. [2022-11-25 17:17:20,613 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 205 transitions, 464 flow [2022-11-25 17:17:20,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 434.0) internal successors, (1302), 3 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:20,614 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:17:20,615 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:17:20,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:17:20,615 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2022-11-25 17:17:20,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:20,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1024182960, now seen corresponding path program 1 times [2022-11-25 17:17:20,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:20,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493336412] [2022-11-25 17:17:20,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:20,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:20,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:21,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:17:21,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:21,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493336412] [2022-11-25 17:17:21,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493336412] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:17:21,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:17:21,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:17:21,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705849414] [2022-11-25 17:17:21,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:17:21,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:17:21,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:21,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:17:21,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:17:22,148 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 383 out of 747 [2022-11-25 17:17:22,164 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 205 transitions, 464 flow. Second operand has 6 states, 6 states have (on average 384.6666666666667) internal successors, (2308), 6 states have internal predecessors, (2308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:22,165 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:17:22,165 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 383 of 747 [2022-11-25 17:17:22,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:17:40,288 INFO L130 PetriNetUnfolder]: 81273/148789 cut-off events. [2022-11-25 17:17:40,289 INFO L131 PetriNetUnfolder]: For 7386/9331 co-relation queries the response was YES. [2022-11-25 17:17:40,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281625 conditions, 148789 events. 81273/148789 cut-off events. For 7386/9331 co-relation queries the response was YES. Maximal size of possible extension queue 1781. Compared 1428053 event pairs, 30046 based on Foata normal form. 468/139702 useless extension candidates. Maximal degree in co-relation 281618. Up to 83696 conditions per place. [2022-11-25 17:17:41,115 INFO L137 encePairwiseOnDemand]: 709/747 looper letters, 346 selfloop transitions, 133 changer transitions 0/579 dead transitions. [2022-11-25 17:17:41,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 579 transitions, 2299 flow [2022-11-25 17:17:41,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:17:41,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:17:41,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2748 transitions. [2022-11-25 17:17:41,122 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6131191432396251 [2022-11-25 17:17:41,123 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2748 transitions. [2022-11-25 17:17:41,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2748 transitions. [2022-11-25 17:17:41,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:17:41,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2748 transitions. [2022-11-25 17:17:41,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 458.0) internal successors, (2748), 6 states have internal predecessors, (2748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:41,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 747.0) internal successors, (5229), 7 states have internal predecessors, (5229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:41,144 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 747.0) internal successors, (5229), 7 states have internal predecessors, (5229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:41,144 INFO L175 Difference]: Start difference. First operand has 201 places, 205 transitions, 464 flow. Second operand 6 states and 2748 transitions. [2022-11-25 17:17:41,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 579 transitions, 2299 flow [2022-11-25 17:17:41,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 579 transitions, 2289 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:17:41,178 INFO L231 Difference]: Finished difference. Result has 210 places, 337 transitions, 1332 flow [2022-11-25 17:17:41,179 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=747, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1332, PETRI_PLACES=210, PETRI_TRANSITIONS=337} [2022-11-25 17:17:41,183 INFO L288 CegarLoopForPetriNet]: 203 programPoint places, 7 predicate places. [2022-11-25 17:17:41,184 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 337 transitions, 1332 flow [2022-11-25 17:17:41,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 384.6666666666667) internal successors, (2308), 6 states have internal predecessors, (2308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:41,185 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:17:41,185 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:17:41,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:17:41,186 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err12ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2022-11-25 17:17:41,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:41,186 INFO L85 PathProgramCache]: Analyzing trace with hash -135006055, now seen corresponding path program 1 times [2022-11-25 17:17:41,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:41,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628831665] [2022-11-25 17:17:41,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:41,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:41,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:41,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:17:41,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:41,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628831665] [2022-11-25 17:17:41,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628831665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:17:41,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:17:41,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:17:41,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499742055] [2022-11-25 17:17:41,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:17:41,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:17:41,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:41,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:17:41,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:17:41,292 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 432 out of 747 [2022-11-25 17:17:41,294 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 337 transitions, 1332 flow. Second operand has 3 states, 3 states have (on average 435.0) internal successors, (1305), 3 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:41,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:17:41,294 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 432 of 747 [2022-11-25 17:17:41,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand