./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/weaver/mult-dist.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1468d4f-6fd4-45bf-bc9a-6c51b804c950/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1468d4f-6fd4-45bf-bc9a-6c51b804c950/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1468d4f-6fd4-45bf-bc9a-6c51b804c950/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1468d4f-6fd4-45bf-bc9a-6c51b804c950/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/mult-dist.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1468d4f-6fd4-45bf-bc9a-6c51b804c950/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1468d4f-6fd4-45bf-bc9a-6c51b804c950/bin/uautomizer-vX5HgA9Q3a --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 c22a326532494b0b5126a81d8882f3e958ed0a5a46e6da0f77df1a4da18ba846 --- 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-b5237d8 [2022-11-21 17:20:32,260 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:20:32,262 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:20:32,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:20:32,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:20:32,303 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:20:32,305 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:20:32,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:20:32,312 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:20:32,314 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:20:32,315 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:20:32,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:20:32,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:20:32,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:20:32,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:20:32,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:20:32,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:20:32,335 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:20:32,337 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:20:32,338 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:20:32,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:20:32,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:20:32,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:20:32,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:20:32,364 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:20:32,368 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:20:32,368 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:20:32,369 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:20:32,371 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:20:32,372 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:20:32,374 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:20:32,374 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:20:32,377 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:20:32,378 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:20:32,380 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:20:32,380 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:20:32,381 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:20:32,381 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:20:32,381 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:20:32,384 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:20:32,385 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:20:32,392 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1468d4f-6fd4-45bf-bc9a-6c51b804c950/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-21 17:20:32,426 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:20:32,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:20:32,427 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:20:32,427 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:20:32,428 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:20:32,428 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:20:32,429 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:20:32,429 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:20:32,429 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:20:32,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:20:32,430 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:20:32,431 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 17:20:32,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:20:32,431 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:20:32,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:20:32,432 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:20:32,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:20:32,432 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:20:32,432 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-21 17:20:32,432 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:20:32,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:20:32,433 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:20:32,433 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:20:32,433 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:20:32,433 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:20:32,434 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:20:32,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:20:32,434 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:20:32,435 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:20:32,435 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:20:32,435 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:20:32,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:20:32,436 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:20:32,436 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:20:32,436 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:20:32,436 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_e1468d4f-6fd4-45bf-bc9a-6c51b804c950/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1468d4f-6fd4-45bf-bc9a-6c51b804c950/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c22a326532494b0b5126a81d8882f3e958ed0a5a46e6da0f77df1a4da18ba846 [2022-11-21 17:20:32,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:20:32,780 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:20:32,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:20:32,784 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:20:32,785 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:20:32,786 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1468d4f-6fd4-45bf-bc9a-6c51b804c950/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/mult-dist.wvr.c [2022-11-21 17:20:35,910 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:20:36,188 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:20:36,189 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1468d4f-6fd4-45bf-bc9a-6c51b804c950/sv-benchmarks/c/weaver/mult-dist.wvr.c [2022-11-21 17:20:36,198 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1468d4f-6fd4-45bf-bc9a-6c51b804c950/bin/uautomizer-vX5HgA9Q3a/data/c7e83d137/b743c6a1c26f4dd38eb5e473f3d7bfe7/FLAG7a85eff54 [2022-11-21 17:20:36,228 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1468d4f-6fd4-45bf-bc9a-6c51b804c950/bin/uautomizer-vX5HgA9Q3a/data/c7e83d137/b743c6a1c26f4dd38eb5e473f3d7bfe7 [2022-11-21 17:20:36,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:20:36,236 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:20:36,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:20:36,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:20:36,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:20:36,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:20:36" (1/1) ... [2022-11-21 17:20:36,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a3276e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:36, skipping insertion in model container [2022-11-21 17:20:36,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:20:36" (1/1) ... [2022-11-21 17:20:36,255 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:20:36,282 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:20:36,588 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_e1468d4f-6fd4-45bf-bc9a-6c51b804c950/sv-benchmarks/c/weaver/mult-dist.wvr.c[2116,2129] [2022-11-21 17:20:36,590 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:20:36,610 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:20:36,665 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_e1468d4f-6fd4-45bf-bc9a-6c51b804c950/sv-benchmarks/c/weaver/mult-dist.wvr.c[2116,2129] [2022-11-21 17:20:36,674 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:20:36,689 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:20:36,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:36 WrapperNode [2022-11-21 17:20:36,697 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:20:36,698 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:20:36,698 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:20:36,698 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:20:36,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:36" (1/1) ... [2022-11-21 17:20:36,729 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:36" (1/1) ... [2022-11-21 17:20:36,757 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 103 [2022-11-21 17:20:36,759 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:20:36,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:20:36,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:20:36,760 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:20:36,770 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:36" (1/1) ... [2022-11-21 17:20:36,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:36" (1/1) ... [2022-11-21 17:20:36,774 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:36" (1/1) ... [2022-11-21 17:20:36,779 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:36" (1/1) ... [2022-11-21 17:20:36,797 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:36" (1/1) ... [2022-11-21 17:20:36,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:36" (1/1) ... [2022-11-21 17:20:36,802 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:36" (1/1) ... [2022-11-21 17:20:36,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:36" (1/1) ... [2022-11-21 17:20:36,806 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:20:36,814 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:20:36,814 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:20:36,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:20:36,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:36" (1/1) ... [2022-11-21 17:20:36,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:20:36,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1468d4f-6fd4-45bf-bc9a-6c51b804c950/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:20:36,849 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1468d4f-6fd4-45bf-bc9a-6c51b804c950/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:20:36,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1468d4f-6fd4-45bf-bc9a-6c51b804c950/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:20:36,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:20:36,901 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 17:20:36,901 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 17:20:36,902 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 17:20:36,902 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 17:20:36,902 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-21 17:20:36,903 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-21 17:20:36,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:20:36,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 17:20:36,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 17:20:36,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:20:36,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:20:36,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 17:20:36,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 17:20:36,906 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 17:20:37,049 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:20:37,051 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:20:37,588 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:20:37,606 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:20:37,607 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-21 17:20:37,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:20:37 BoogieIcfgContainer [2022-11-21 17:20:37,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:20:37,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:20:37,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:20:37,629 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:20:37,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:20:36" (1/3) ... [2022-11-21 17:20:37,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28f46f66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:20:37, skipping insertion in model container [2022-11-21 17:20:37,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:36" (2/3) ... [2022-11-21 17:20:37,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28f46f66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:20:37, skipping insertion in model container [2022-11-21 17:20:37,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:20:37" (3/3) ... [2022-11-21 17:20:37,632 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-dist.wvr.c [2022-11-21 17:20:37,641 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 17:20:37,656 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:20:37,656 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-11-21 17:20:37,656 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 17:20:37,848 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-21 17:20:37,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 196 places, 193 transitions, 410 flow [2022-11-21 17:20:38,007 INFO L130 PetriNetUnfolder]: 7/190 cut-off events. [2022-11-21 17:20:38,007 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-21 17:20:38,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 190 events. 7/190 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 265 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 109. Up to 2 conditions per place. [2022-11-21 17:20:38,015 INFO L82 GeneralOperation]: Start removeDead. Operand has 196 places, 193 transitions, 410 flow [2022-11-21 17:20:38,025 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 174 places, 170 transitions, 358 flow [2022-11-21 17:20:38,045 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:20:38,053 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;@3a6eb84, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:20:38,054 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-11-21 17:20:38,064 INFO L130 PetriNetUnfolder]: 0/24 cut-off events. [2022-11-21 17:20:38,064 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 17:20:38,065 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:20:38,066 INFO L209 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] [2022-11-21 17:20:38,066 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-21 17:20:38,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:20:38,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1133528999, now seen corresponding path program 1 times [2022-11-21 17:20:38,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:20:38,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739025915] [2022-11-21 17:20:38,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:38,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:20:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:38,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:20:38,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:20:38,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739025915] [2022-11-21 17:20:38,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739025915] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:20:38,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:20:38,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:20:38,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304944475] [2022-11-21 17:20:38,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:20:38,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:20:38,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:20:38,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:20:38,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:20:38,460 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 193 [2022-11-21 17:20:38,468 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 170 transitions, 358 flow. Second operand has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 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) [2022-11-21 17:20:38,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:20:38,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 193 [2022-11-21 17:20:38,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:20:38,752 INFO L130 PetriNetUnfolder]: 34/401 cut-off events. [2022-11-21 17:20:38,753 INFO L131 PetriNetUnfolder]: For 48/78 co-relation queries the response was YES. [2022-11-21 17:20:38,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 502 conditions, 401 events. 34/401 cut-off events. For 48/78 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1690 event pairs, 21 based on Foata normal form. 24/340 useless extension candidates. Maximal degree in co-relation 338. Up to 68 conditions per place. [2022-11-21 17:20:38,766 INFO L137 encePairwiseOnDemand]: 187/193 looper letters, 15 selfloop transitions, 2 changer transitions 0/166 dead transitions. [2022-11-21 17:20:38,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 166 transitions, 384 flow [2022-11-21 17:20:38,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:20:38,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:20:38,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 531 transitions. [2022-11-21 17:20:38,791 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.917098445595855 [2022-11-21 17:20:38,792 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 531 transitions. [2022-11-21 17:20:38,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 531 transitions. [2022-11-21 17:20:38,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:20:38,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 531 transitions. [2022-11-21 17:20:38,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 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) [2022-11-21 17:20:38,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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) [2022-11-21 17:20:38,818 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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) [2022-11-21 17:20:38,820 INFO L175 Difference]: Start difference. First operand has 174 places, 170 transitions, 358 flow. Second operand 3 states and 531 transitions. [2022-11-21 17:20:38,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 166 transitions, 384 flow [2022-11-21 17:20:38,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 166 transitions, 372 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-21 17:20:38,833 INFO L231 Difference]: Finished difference. Result has 169 places, 166 transitions, 342 flow [2022-11-21 17:20:38,836 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=342, PETRI_PLACES=169, PETRI_TRANSITIONS=166} [2022-11-21 17:20:38,840 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, -5 predicate places. [2022-11-21 17:20:38,841 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 166 transitions, 342 flow [2022-11-21 17:20:38,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 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) [2022-11-21 17:20:38,842 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:20:38,843 INFO L209 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] [2022-11-21 17:20:38,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:20:38,844 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-21 17:20:38,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:20:38,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1557356319, now seen corresponding path program 1 times [2022-11-21 17:20:38,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:20:38,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873014290] [2022-11-21 17:20:38,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:38,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:20:38,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:38,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:20:38,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:20:38,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873014290] [2022-11-21 17:20:38,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873014290] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:20:38,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:20:38,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:20:38,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803507326] [2022-11-21 17:20:38,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:20:38,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:20:38,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:20:38,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:20:38,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:20:38,986 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 193 [2022-11-21 17:20:38,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 166 transitions, 342 flow. Second operand has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 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) [2022-11-21 17:20:38,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:20:38,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 193 [2022-11-21 17:20:38,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:20:39,133 INFO L130 PetriNetUnfolder]: 58/483 cut-off events. [2022-11-21 17:20:39,133 INFO L131 PetriNetUnfolder]: For 21/31 co-relation queries the response was YES. [2022-11-21 17:20:39,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 596 conditions, 483 events. 58/483 cut-off events. For 21/31 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2347 event pairs, 39 based on Foata normal form. 0/366 useless extension candidates. Maximal degree in co-relation 563. Up to 101 conditions per place. [2022-11-21 17:20:39,141 INFO L137 encePairwiseOnDemand]: 190/193 looper letters, 15 selfloop transitions, 2 changer transitions 0/165 dead transitions. [2022-11-21 17:20:39,141 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 165 transitions, 374 flow [2022-11-21 17:20:39,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:20:39,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:20:39,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 528 transitions. [2022-11-21 17:20:39,143 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9119170984455959 [2022-11-21 17:20:39,144 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 528 transitions. [2022-11-21 17:20:39,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 528 transitions. [2022-11-21 17:20:39,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:20:39,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 528 transitions. [2022-11-21 17:20:39,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 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) [2022-11-21 17:20:39,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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) [2022-11-21 17:20:39,151 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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) [2022-11-21 17:20:39,151 INFO L175 Difference]: Start difference. First operand has 169 places, 166 transitions, 342 flow. Second operand 3 states and 528 transitions. [2022-11-21 17:20:39,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 165 transitions, 374 flow [2022-11-21 17:20:39,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 165 transitions, 370 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 17:20:39,158 INFO L231 Difference]: Finished difference. Result has 168 places, 165 transitions, 340 flow [2022-11-21 17:20:39,159 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=340, PETRI_PLACES=168, PETRI_TRANSITIONS=165} [2022-11-21 17:20:39,160 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, -6 predicate places. [2022-11-21 17:20:39,160 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 165 transitions, 340 flow [2022-11-21 17:20:39,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 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) [2022-11-21 17:20:39,161 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:20:39,161 INFO L209 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] [2022-11-21 17:20:39,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 17:20:39,161 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-21 17:20:39,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:20:39,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1214048674, now seen corresponding path program 1 times [2022-11-21 17:20:39,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:20:39,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106060444] [2022-11-21 17:20:39,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:39,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:20:39,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:39,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:20:39,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:20:39,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106060444] [2022-11-21 17:20:39,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106060444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:20:39,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:20:39,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:20:39,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282592865] [2022-11-21 17:20:39,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:20:39,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:20:39,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:20:39,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:20:39,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:20:39,221 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 193 [2022-11-21 17:20:39,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 165 transitions, 340 flow. Second operand has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 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) [2022-11-21 17:20:39,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:20:39,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 193 [2022-11-21 17:20:39,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:20:39,547 INFO L130 PetriNetUnfolder]: 222/1275 cut-off events. [2022-11-21 17:20:39,547 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2022-11-21 17:20:39,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1624 conditions, 1275 events. 222/1275 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 9340 event pairs, 135 based on Foata normal form. 0/979 useless extension candidates. Maximal degree in co-relation 1585. Up to 322 conditions per place. [2022-11-21 17:20:39,564 INFO L137 encePairwiseOnDemand]: 190/193 looper letters, 18 selfloop transitions, 2 changer transitions 0/164 dead transitions. [2022-11-21 17:20:39,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 164 transitions, 378 flow [2022-11-21 17:20:39,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:20:39,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:20:39,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 522 transitions. [2022-11-21 17:20:39,567 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9015544041450777 [2022-11-21 17:20:39,567 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 522 transitions. [2022-11-21 17:20:39,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 522 transitions. [2022-11-21 17:20:39,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:20:39,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 522 transitions. [2022-11-21 17:20:39,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 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) [2022-11-21 17:20:39,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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) [2022-11-21 17:20:39,571 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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) [2022-11-21 17:20:39,571 INFO L175 Difference]: Start difference. First operand has 168 places, 165 transitions, 340 flow. Second operand 3 states and 522 transitions. [2022-11-21 17:20:39,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 164 transitions, 378 flow [2022-11-21 17:20:39,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 164 transitions, 374 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 17:20:39,578 INFO L231 Difference]: Finished difference. Result has 167 places, 164 transitions, 338 flow [2022-11-21 17:20:39,578 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=338, PETRI_PLACES=167, PETRI_TRANSITIONS=164} [2022-11-21 17:20:39,580 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, -7 predicate places. [2022-11-21 17:20:39,580 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 164 transitions, 338 flow [2022-11-21 17:20:39,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 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) [2022-11-21 17:20:39,581 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:20:39,581 INFO L209 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] [2022-11-21 17:20:39,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 17:20:39,581 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-21 17:20:39,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:20:39,583 INFO L85 PathProgramCache]: Analyzing trace with hash 240180713, now seen corresponding path program 1 times [2022-11-21 17:20:39,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:20:39,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137110148] [2022-11-21 17:20:39,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:39,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:20:39,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:39,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:20:39,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:20:39,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137110148] [2022-11-21 17:20:39,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137110148] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:20:39,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:20:39,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:20:39,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15616997] [2022-11-21 17:20:39,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:20:39,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:20:39,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:20:39,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:20:39,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:20:39,688 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 193 [2022-11-21 17:20:39,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 164 transitions, 338 flow. Second operand has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 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) [2022-11-21 17:20:39,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:20:39,690 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 193 [2022-11-21 17:20:39,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:20:39,782 INFO L130 PetriNetUnfolder]: 23/322 cut-off events. [2022-11-21 17:20:39,782 INFO L131 PetriNetUnfolder]: For 7/13 co-relation queries the response was YES. [2022-11-21 17:20:39,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 380 conditions, 322 events. 23/322 cut-off events. For 7/13 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1133 event pairs, 6 based on Foata normal form. 1/268 useless extension candidates. Maximal degree in co-relation 334. Up to 41 conditions per place. [2022-11-21 17:20:39,787 INFO L137 encePairwiseOnDemand]: 189/193 looper letters, 14 selfloop transitions, 2 changer transitions 0/166 dead transitions. [2022-11-21 17:20:39,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 166 transitions, 376 flow [2022-11-21 17:20:39,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:20:39,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:20:39,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 537 transitions. [2022-11-21 17:20:39,790 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.927461139896373 [2022-11-21 17:20:39,790 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 537 transitions. [2022-11-21 17:20:39,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 537 transitions. [2022-11-21 17:20:39,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:20:39,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 537 transitions. [2022-11-21 17:20:39,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 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) [2022-11-21 17:20:39,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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) [2022-11-21 17:20:39,799 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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) [2022-11-21 17:20:39,800 INFO L175 Difference]: Start difference. First operand has 167 places, 164 transitions, 338 flow. Second operand 3 states and 537 transitions. [2022-11-21 17:20:39,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 166 transitions, 376 flow [2022-11-21 17:20:39,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 166 transitions, 372 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 17:20:39,804 INFO L231 Difference]: Finished difference. Result has 166 places, 164 transitions, 344 flow [2022-11-21 17:20:39,805 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=344, PETRI_PLACES=166, PETRI_TRANSITIONS=164} [2022-11-21 17:20:39,812 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, -8 predicate places. [2022-11-21 17:20:39,812 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 164 transitions, 344 flow [2022-11-21 17:20:39,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 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) [2022-11-21 17:20:39,813 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:20:39,813 INFO L209 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] [2022-11-21 17:20:39,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 17:20:39,814 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-21 17:20:39,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:20:39,814 INFO L85 PathProgramCache]: Analyzing trace with hash -191447237, now seen corresponding path program 1 times [2022-11-21 17:20:39,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:20:39,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477990865] [2022-11-21 17:20:39,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:39,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:20:39,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:39,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:20:39,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:20:39,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477990865] [2022-11-21 17:20:39,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477990865] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:20:39,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:20:39,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:20:39,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681624546] [2022-11-21 17:20:39,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:20:39,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:20:39,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:20:39,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:20:39,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:20:39,884 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 193 [2022-11-21 17:20:39,885 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 164 transitions, 344 flow. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 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) [2022-11-21 17:20:39,885 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:20:39,885 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 193 [2022-11-21 17:20:39,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:20:39,948 INFO L130 PetriNetUnfolder]: 21/277 cut-off events. [2022-11-21 17:20:39,948 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-21 17:20:39,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 343 conditions, 277 events. 21/277 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1020 event pairs, 4 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 261. Up to 23 conditions per place. [2022-11-21 17:20:39,952 INFO L137 encePairwiseOnDemand]: 188/193 looper letters, 12 selfloop transitions, 3 changer transitions 0/164 dead transitions. [2022-11-21 17:20:39,952 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 164 transitions, 376 flow [2022-11-21 17:20:39,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:20:39,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:20:39,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 536 transitions. [2022-11-21 17:20:39,955 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.92573402417962 [2022-11-21 17:20:39,955 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 536 transitions. [2022-11-21 17:20:39,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 536 transitions. [2022-11-21 17:20:39,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:20:39,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 536 transitions. [2022-11-21 17:20:39,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 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) [2022-11-21 17:20:39,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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) [2022-11-21 17:20:39,959 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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) [2022-11-21 17:20:39,959 INFO L175 Difference]: Start difference. First operand has 166 places, 164 transitions, 344 flow. Second operand 3 states and 536 transitions. [2022-11-21 17:20:39,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 164 transitions, 376 flow [2022-11-21 17:20:39,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 164 transitions, 376 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 17:20:39,963 INFO L231 Difference]: Finished difference. Result has 166 places, 162 transitions, 346 flow [2022-11-21 17:20:39,963 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=346, PETRI_PLACES=166, PETRI_TRANSITIONS=162} [2022-11-21 17:20:39,964 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, -8 predicate places. [2022-11-21 17:20:39,964 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 162 transitions, 346 flow [2022-11-21 17:20:39,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 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) [2022-11-21 17:20:39,965 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:20:39,965 INFO L209 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] [2022-11-21 17:20:39,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 17:20:39,965 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-21 17:20:39,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:20:39,966 INFO L85 PathProgramCache]: Analyzing trace with hash 702813533, now seen corresponding path program 1 times [2022-11-21 17:20:39,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:20:39,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501556917] [2022-11-21 17:20:39,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:39,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:20:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:40,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:20:40,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:20:40,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501556917] [2022-11-21 17:20:40,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501556917] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:20:40,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:20:40,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:20:40,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556254577] [2022-11-21 17:20:40,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:20:40,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:20:40,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:20:40,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:20:40,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:20:40,030 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 193 [2022-11-21 17:20:40,031 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 162 transitions, 346 flow. Second operand has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 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) [2022-11-21 17:20:40,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:20:40,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 193 [2022-11-21 17:20:40,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:20:40,240 INFO L130 PetriNetUnfolder]: 121/958 cut-off events. [2022-11-21 17:20:40,241 INFO L131 PetriNetUnfolder]: For 22/25 co-relation queries the response was YES. [2022-11-21 17:20:40,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1196 conditions, 958 events. 121/958 cut-off events. For 22/25 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 6434 event pairs, 25 based on Foata normal form. 1/803 useless extension candidates. Maximal degree in co-relation 1004. Up to 166 conditions per place. [2022-11-21 17:20:40,253 INFO L137 encePairwiseOnDemand]: 187/193 looper letters, 19 selfloop transitions, 3 changer transitions 0/167 dead transitions. [2022-11-21 17:20:40,253 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 167 transitions, 405 flow [2022-11-21 17:20:40,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:20:40,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:20:40,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 535 transitions. [2022-11-21 17:20:40,255 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.924006908462867 [2022-11-21 17:20:40,255 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 535 transitions. [2022-11-21 17:20:40,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 535 transitions. [2022-11-21 17:20:40,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:20:40,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 535 transitions. [2022-11-21 17:20:40,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 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) [2022-11-21 17:20:40,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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) [2022-11-21 17:20:40,259 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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) [2022-11-21 17:20:40,259 INFO L175 Difference]: Start difference. First operand has 166 places, 162 transitions, 346 flow. Second operand 3 states and 535 transitions. [2022-11-21 17:20:40,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 167 transitions, 405 flow [2022-11-21 17:20:40,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 167 transitions, 399 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 17:20:40,264 INFO L231 Difference]: Finished difference. Result has 164 places, 162 transitions, 355 flow [2022-11-21 17:20:40,265 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=355, PETRI_PLACES=164, PETRI_TRANSITIONS=162} [2022-11-21 17:20:40,268 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, -10 predicate places. [2022-11-21 17:20:40,268 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 162 transitions, 355 flow [2022-11-21 17:20:40,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 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) [2022-11-21 17:20:40,269 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:20:40,270 INFO L209 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] [2022-11-21 17:20:40,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 17:20:40,270 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-21 17:20:40,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:20:40,271 INFO L85 PathProgramCache]: Analyzing trace with hash -923046858, now seen corresponding path program 1 times [2022-11-21 17:20:40,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:20:40,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873351506] [2022-11-21 17:20:40,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:40,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:20:40,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:40,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:20:40,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:20:40,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873351506] [2022-11-21 17:20:40,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873351506] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:20:40,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:20:40,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:20:40,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340577768] [2022-11-21 17:20:40,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:20:40,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:20:40,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:20:40,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:20:40,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:20:40,360 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 193 [2022-11-21 17:20:40,361 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 162 transitions, 355 flow. Second operand has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 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) [2022-11-21 17:20:40,361 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:20:40,361 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 193 [2022-11-21 17:20:40,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:20:40,463 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([467] L57-2-->L57-3: Formula: (= |v_#race~b~0_4| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_4|} AuxVars[] AssignedVars[#race~b~0][101], [Black: 220#true, 42#L57-3true, 227#(= |#race~b~0| 0), 101#L74-4true, Black: 211#true, 180#L49-1true, 175#L41-1true, 213#(= |#race~a~0| 0), 222#(= |#race~c~0| 0)]) [2022-11-21 17:20:40,463 INFO L383 tUnfolder$Statistics]: this new event has 80 ancestors and is cut-off event [2022-11-21 17:20:40,463 INFO L386 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-11-21 17:20:40,463 INFO L386 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-11-21 17:20:40,463 INFO L386 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-11-21 17:20:40,469 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([467] L57-2-->L57-3: Formula: (= |v_#race~b~0_4| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_4|} AuxVars[] AssignedVars[#race~b~0][101], [Black: 220#true, 42#L57-3true, 227#(= |#race~b~0| 0), 101#L74-4true, 99#L49-2true, Black: 211#true, 175#L41-1true, 213#(= |#race~a~0| 0), 222#(= |#race~c~0| 0)]) [2022-11-21 17:20:40,469 INFO L383 tUnfolder$Statistics]: this new event has 81 ancestors and is cut-off event [2022-11-21 17:20:40,469 INFO L386 tUnfolder$Statistics]: existing Event has 94 ancestors and is cut-off event [2022-11-21 17:20:40,470 INFO L386 tUnfolder$Statistics]: existing Event has 79 ancestors and is cut-off event [2022-11-21 17:20:40,470 INFO L386 tUnfolder$Statistics]: existing Event has 79 ancestors and is cut-off event [2022-11-21 17:20:40,518 INFO L130 PetriNetUnfolder]: 129/898 cut-off events. [2022-11-21 17:20:40,518 INFO L131 PetriNetUnfolder]: For 30/52 co-relation queries the response was YES. [2022-11-21 17:20:40,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1175 conditions, 898 events. 129/898 cut-off events. For 30/52 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 6157 event pairs, 24 based on Foata normal form. 2/770 useless extension candidates. Maximal degree in co-relation 919. Up to 152 conditions per place. [2022-11-21 17:20:40,530 INFO L137 encePairwiseOnDemand]: 189/193 looper letters, 14 selfloop transitions, 2 changer transitions 0/164 dead transitions. [2022-11-21 17:20:40,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 164 transitions, 393 flow [2022-11-21 17:20:40,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:20:40,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:20:40,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 537 transitions. [2022-11-21 17:20:40,533 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.927461139896373 [2022-11-21 17:20:40,533 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 537 transitions. [2022-11-21 17:20:40,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 537 transitions. [2022-11-21 17:20:40,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:20:40,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 537 transitions. [2022-11-21 17:20:40,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 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) [2022-11-21 17:20:40,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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) [2022-11-21 17:20:40,537 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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) [2022-11-21 17:20:40,537 INFO L175 Difference]: Start difference. First operand has 164 places, 162 transitions, 355 flow. Second operand 3 states and 537 transitions. [2022-11-21 17:20:40,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 164 transitions, 393 flow [2022-11-21 17:20:40,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 164 transitions, 393 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 17:20:40,541 INFO L231 Difference]: Finished difference. Result has 165 places, 162 transitions, 365 flow [2022-11-21 17:20:40,542 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=365, PETRI_PLACES=165, PETRI_TRANSITIONS=162} [2022-11-21 17:20:40,542 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, -9 predicate places. [2022-11-21 17:20:40,543 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 162 transitions, 365 flow [2022-11-21 17:20:40,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 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) [2022-11-21 17:20:40,543 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:20:40,543 INFO L209 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] [2022-11-21 17:20:40,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 17:20:40,544 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-21 17:20:40,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:20:40,544 INFO L85 PathProgramCache]: Analyzing trace with hash -2107846938, now seen corresponding path program 1 times [2022-11-21 17:20:40,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:20:40,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540285109] [2022-11-21 17:20:40,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:40,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:20:40,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:40,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:20:40,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:20:40,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540285109] [2022-11-21 17:20:40,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540285109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:20:40,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:20:40,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:20:40,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215409882] [2022-11-21 17:20:40,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:20:40,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:20:40,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:20:40,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:20:40,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:20:40,587 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 193 [2022-11-21 17:20:40,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 162 transitions, 365 flow. Second operand has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 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) [2022-11-21 17:20:40,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:20:40,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 193 [2022-11-21 17:20:40,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:20:40,679 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([467] L57-2-->L57-3: Formula: (= |v_#race~b~0_4| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_4|} AuxVars[] AssignedVars[#race~b~0][99], [Black: 220#true, 42#L57-3true, 227#(= |#race~b~0| 0), 101#L74-4true, Black: 225#true, Black: 211#true, 180#L49-1true, 175#L41-1true, 213#(= |#race~a~0| 0), 230#true, 222#(= |#race~c~0| 0)]) [2022-11-21 17:20:40,679 INFO L383 tUnfolder$Statistics]: this new event has 80 ancestors and is cut-off event [2022-11-21 17:20:40,679 INFO L386 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-11-21 17:20:40,679 INFO L386 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-11-21 17:20:40,680 INFO L386 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-11-21 17:20:40,694 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([438] L49-7-->L49-1: Formula: (= |v_#race~b~0_1| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_1|} AuxVars[] AssignedVars[#race~b~0][105], [Black: 220#true, 42#L57-3true, 227#(= |#race~b~0| 0), 101#L74-4true, Black: 225#true, Black: 211#true, 180#L49-1true, 175#L41-1true, 213#(= |#race~a~0| 0), 230#true, 222#(= |#race~c~0| 0)]) [2022-11-21 17:20:40,694 INFO L383 tUnfolder$Statistics]: this new event has 95 ancestors and is cut-off event [2022-11-21 17:20:40,694 INFO L386 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-11-21 17:20:40,695 INFO L386 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-11-21 17:20:40,695 INFO L386 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-11-21 17:20:40,719 INFO L130 PetriNetUnfolder]: 83/609 cut-off events. [2022-11-21 17:20:40,719 INFO L131 PetriNetUnfolder]: For 21/29 co-relation queries the response was YES. [2022-11-21 17:20:40,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 825 conditions, 609 events. 83/609 cut-off events. For 21/29 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3384 event pairs, 15 based on Foata normal form. 2/540 useless extension candidates. Maximal degree in co-relation 643. Up to 44 conditions per place. [2022-11-21 17:20:40,728 INFO L137 encePairwiseOnDemand]: 188/193 looper letters, 12 selfloop transitions, 3 changer transitions 0/162 dead transitions. [2022-11-21 17:20:40,728 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 162 transitions, 397 flow [2022-11-21 17:20:40,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:20:40,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:20:40,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 536 transitions. [2022-11-21 17:20:40,730 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.92573402417962 [2022-11-21 17:20:40,730 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 536 transitions. [2022-11-21 17:20:40,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 536 transitions. [2022-11-21 17:20:40,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:20:40,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 536 transitions. [2022-11-21 17:20:40,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 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) [2022-11-21 17:20:40,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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) [2022-11-21 17:20:40,734 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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) [2022-11-21 17:20:40,734 INFO L175 Difference]: Start difference. First operand has 165 places, 162 transitions, 365 flow. Second operand 3 states and 536 transitions. [2022-11-21 17:20:40,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 162 transitions, 397 flow [2022-11-21 17:20:40,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 162 transitions, 397 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 17:20:40,738 INFO L231 Difference]: Finished difference. Result has 165 places, 160 transitions, 367 flow [2022-11-21 17:20:40,738 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=367, PETRI_PLACES=165, PETRI_TRANSITIONS=160} [2022-11-21 17:20:40,739 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, -9 predicate places. [2022-11-21 17:20:40,739 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 160 transitions, 367 flow [2022-11-21 17:20:40,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 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) [2022-11-21 17:20:40,739 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:20:40,740 INFO L209 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] [2022-11-21 17:20:40,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 17:20:40,740 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-21 17:20:40,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:20:40,741 INFO L85 PathProgramCache]: Analyzing trace with hash -976796320, now seen corresponding path program 1 times [2022-11-21 17:20:40,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:20:40,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16366197] [2022-11-21 17:20:40,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:40,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:20:40,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:40,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:20:40,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:20:40,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16366197] [2022-11-21 17:20:40,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16366197] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:20:40,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:20:40,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:20:40,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484019795] [2022-11-21 17:20:40,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:20:40,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:20:40,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:20:40,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:20:40,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:20:40,779 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 193 [2022-11-21 17:20:40,780 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 160 transitions, 367 flow. Second operand has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 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) [2022-11-21 17:20:40,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:20:40,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 193 [2022-11-21 17:20:40,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:20:40,864 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([467] L57-2-->L57-3: Formula: (= |v_#race~b~0_4| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_4|} AuxVars[] AssignedVars[#race~b~0][98], [Black: 220#true, 42#L57-3true, 101#L74-4true, 227#(= |#race~b~0| 0), Black: 225#true, Black: 211#true, 175#L41-1true, 180#L49-1true, 213#(= |#race~a~0| 0), 234#true, 230#true, 222#(= |#race~c~0| 0)]) [2022-11-21 17:20:40,864 INFO L383 tUnfolder$Statistics]: this new event has 80 ancestors and is cut-off event [2022-11-21 17:20:40,864 INFO L386 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-11-21 17:20:40,865 INFO L386 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-11-21 17:20:40,865 INFO L386 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-11-21 17:20:40,877 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([438] L49-7-->L49-1: Formula: (= |v_#race~b~0_1| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_1|} AuxVars[] AssignedVars[#race~b~0][104], [Black: 220#true, 42#L57-3true, 101#L74-4true, 227#(= |#race~b~0| 0), Black: 225#true, Black: 211#true, 175#L41-1true, 180#L49-1true, 213#(= |#race~a~0| 0), 234#true, 230#true, 222#(= |#race~c~0| 0)]) [2022-11-21 17:20:40,878 INFO L383 tUnfolder$Statistics]: this new event has 95 ancestors and is cut-off event [2022-11-21 17:20:40,878 INFO L386 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-11-21 17:20:40,878 INFO L386 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-11-21 17:20:40,878 INFO L386 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-11-21 17:20:40,895 INFO L130 PetriNetUnfolder]: 68/547 cut-off events. [2022-11-21 17:20:40,895 INFO L131 PetriNetUnfolder]: For 8/10 co-relation queries the response was YES. [2022-11-21 17:20:40,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 747 conditions, 547 events. 68/547 cut-off events. For 8/10 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2943 event pairs, 17 based on Foata normal form. 0/484 useless extension candidates. Maximal degree in co-relation 564. Up to 46 conditions per place. [2022-11-21 17:20:40,904 INFO L137 encePairwiseOnDemand]: 190/193 looper letters, 14 selfloop transitions, 2 changer transitions 0/161 dead transitions. [2022-11-21 17:20:40,904 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 161 transitions, 403 flow [2022-11-21 17:20:40,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:20:40,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:20:40,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 530 transitions. [2022-11-21 17:20:40,906 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9153713298791019 [2022-11-21 17:20:40,906 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 530 transitions. [2022-11-21 17:20:40,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 530 transitions. [2022-11-21 17:20:40,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:20:40,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 530 transitions. [2022-11-21 17:20:40,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 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) [2022-11-21 17:20:40,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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) [2022-11-21 17:20:40,911 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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) [2022-11-21 17:20:40,911 INFO L175 Difference]: Start difference. First operand has 165 places, 160 transitions, 367 flow. Second operand 3 states and 530 transitions. [2022-11-21 17:20:40,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 161 transitions, 403 flow [2022-11-21 17:20:40,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 161 transitions, 397 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 17:20:40,915 INFO L231 Difference]: Finished difference. Result has 164 places, 159 transitions, 363 flow [2022-11-21 17:20:40,916 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=363, PETRI_PLACES=164, PETRI_TRANSITIONS=159} [2022-11-21 17:20:40,918 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, -10 predicate places. [2022-11-21 17:20:40,918 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 159 transitions, 363 flow [2022-11-21 17:20:40,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 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) [2022-11-21 17:20:40,919 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:20:40,919 INFO L209 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, 1, 1, 1] [2022-11-21 17:20:40,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 17:20:40,919 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-21 17:20:40,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:20:40,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1688302027, now seen corresponding path program 1 times [2022-11-21 17:20:40,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:20:40,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274071151] [2022-11-21 17:20:40,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:40,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:20:40,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:40,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:20:40,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:20:40,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274071151] [2022-11-21 17:20:40,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274071151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:20:40,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:20:40,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:20:40,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877600170] [2022-11-21 17:20:40,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:20:40,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:20:40,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:20:40,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:20:40,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:20:40,992 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 193 [2022-11-21 17:20:40,993 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 159 transitions, 363 flow. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 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) [2022-11-21 17:20:40,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:20:40,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 193 [2022-11-21 17:20:40,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:20:41,087 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([467] L57-2-->L57-3: Formula: (= |v_#race~b~0_4| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_4|} AuxVars[] AssignedVars[#race~b~0][97], [Black: 220#true, 42#L57-3true, 101#L74-4true, 227#(= |#race~b~0| 0), Black: 225#true, Black: 211#true, 180#L49-1true, 175#L41-1true, 213#(= |#race~a~0| 0), 238#true, 234#true, 222#(= |#race~c~0| 0)]) [2022-11-21 17:20:41,088 INFO L383 tUnfolder$Statistics]: this new event has 80 ancestors and is cut-off event [2022-11-21 17:20:41,088 INFO L386 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-11-21 17:20:41,088 INFO L386 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-11-21 17:20:41,088 INFO L386 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-11-21 17:20:41,104 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([438] L49-7-->L49-1: Formula: (= |v_#race~b~0_1| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_1|} AuxVars[] AssignedVars[#race~b~0][103], [Black: 220#true, 42#L57-3true, 101#L74-4true, 227#(= |#race~b~0| 0), Black: 225#true, Black: 211#true, 180#L49-1true, 175#L41-1true, 213#(= |#race~a~0| 0), 234#true, 238#true, 222#(= |#race~c~0| 0)]) [2022-11-21 17:20:41,104 INFO L383 tUnfolder$Statistics]: this new event has 95 ancestors and is cut-off event [2022-11-21 17:20:41,104 INFO L386 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-11-21 17:20:41,104 INFO L386 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-11-21 17:20:41,104 INFO L386 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-11-21 17:20:41,131 INFO L130 PetriNetUnfolder]: 87/606 cut-off events. [2022-11-21 17:20:41,131 INFO L131 PetriNetUnfolder]: For 23/31 co-relation queries the response was YES. [2022-11-21 17:20:41,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 837 conditions, 606 events. 87/606 cut-off events. For 23/31 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3378 event pairs, 22 based on Foata normal form. 0/539 useless extension candidates. Maximal degree in co-relation 713. Up to 66 conditions per place. [2022-11-21 17:20:41,139 INFO L137 encePairwiseOnDemand]: 190/193 looper letters, 14 selfloop transitions, 2 changer transitions 0/160 dead transitions. [2022-11-21 17:20:41,140 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 160 transitions, 399 flow [2022-11-21 17:20:41,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:20:41,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:20:41,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 530 transitions. [2022-11-21 17:20:41,142 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9153713298791019 [2022-11-21 17:20:41,142 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 530 transitions. [2022-11-21 17:20:41,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 530 transitions. [2022-11-21 17:20:41,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:20:41,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 530 transitions. [2022-11-21 17:20:41,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 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) [2022-11-21 17:20:41,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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) [2022-11-21 17:20:41,146 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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) [2022-11-21 17:20:41,146 INFO L175 Difference]: Start difference. First operand has 164 places, 159 transitions, 363 flow. Second operand 3 states and 530 transitions. [2022-11-21 17:20:41,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 160 transitions, 399 flow [2022-11-21 17:20:41,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 160 transitions, 395 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 17:20:41,151 INFO L231 Difference]: Finished difference. Result has 163 places, 158 transitions, 361 flow [2022-11-21 17:20:41,152 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=361, PETRI_PLACES=163, PETRI_TRANSITIONS=158} [2022-11-21 17:20:41,153 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, -11 predicate places. [2022-11-21 17:20:41,153 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 158 transitions, 361 flow [2022-11-21 17:20:41,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 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) [2022-11-21 17:20:41,154 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:20:41,154 INFO L209 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, 1, 1, 1, 1, 1] [2022-11-21 17:20:41,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 17:20:41,156 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-21 17:20:41,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:20:41,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1768984947, now seen corresponding path program 1 times [2022-11-21 17:20:41,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:20:41,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072684073] [2022-11-21 17:20:41,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:41,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:20:41,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:41,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:20:41,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:20:41,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072684073] [2022-11-21 17:20:41,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072684073] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:20:41,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:20:41,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:20:41,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633593065] [2022-11-21 17:20:41,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:20:41,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:20:41,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:20:41,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:20:41,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:20:41,699 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 193 [2022-11-21 17:20:41,701 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 158 transitions, 361 flow. Second operand has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 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) [2022-11-21 17:20:41,701 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:20:41,701 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 193 [2022-11-21 17:20:41,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:20:41,815 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([467] L57-2-->L57-3: Formula: (= |v_#race~b~0_4| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_4|} AuxVars[] AssignedVars[#race~b~0][97], [Black: 220#true, 42#L57-3true, 101#L74-4true, 227#(= |#race~b~0| 0), Black: 225#true, Black: 211#true, 180#L49-1true, 175#L41-1true, 242#true, 213#(= |#race~a~0| 0), 238#true, 222#(= |#race~c~0| 0)]) [2022-11-21 17:20:41,815 INFO L383 tUnfolder$Statistics]: this new event has 80 ancestors and is cut-off event [2022-11-21 17:20:41,816 INFO L386 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-11-21 17:20:41,816 INFO L386 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-11-21 17:20:41,816 INFO L386 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-11-21 17:20:41,855 INFO L130 PetriNetUnfolder]: 44/436 cut-off events. [2022-11-21 17:20:41,855 INFO L131 PetriNetUnfolder]: For 1/9 co-relation queries the response was YES. [2022-11-21 17:20:41,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 589 conditions, 436 events. 44/436 cut-off events. For 1/9 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2054 event pairs, 5 based on Foata normal form. 4/393 useless extension candidates. Maximal degree in co-relation 475. Up to 34 conditions per place. [2022-11-21 17:20:41,862 INFO L137 encePairwiseOnDemand]: 188/193 looper letters, 23 selfloop transitions, 4 changer transitions 0/157 dead transitions. [2022-11-21 17:20:41,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 157 transitions, 413 flow [2022-11-21 17:20:41,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 17:20:41,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 17:20:41,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 976 transitions. [2022-11-21 17:20:41,866 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.842832469775475 [2022-11-21 17:20:41,866 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 976 transitions. [2022-11-21 17:20:41,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 976 transitions. [2022-11-21 17:20:41,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:20:41,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 976 transitions. [2022-11-21 17:20:41,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 162.66666666666666) internal successors, (976), 6 states have internal predecessors, (976), 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) [2022-11-21 17:20:41,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 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) [2022-11-21 17:20:41,873 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 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) [2022-11-21 17:20:41,873 INFO L175 Difference]: Start difference. First operand has 163 places, 158 transitions, 361 flow. Second operand 6 states and 976 transitions. [2022-11-21 17:20:41,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 157 transitions, 413 flow [2022-11-21 17:20:41,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 157 transitions, 409 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 17:20:41,877 INFO L231 Difference]: Finished difference. Result has 165 places, 157 transitions, 363 flow [2022-11-21 17:20:41,878 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=363, PETRI_PLACES=165, PETRI_TRANSITIONS=157} [2022-11-21 17:20:41,879 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, -9 predicate places. [2022-11-21 17:20:41,879 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 157 transitions, 363 flow [2022-11-21 17:20:41,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 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) [2022-11-21 17:20:41,880 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:20:41,880 INFO L209 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, 1, 1, 1, 1, 1] [2022-11-21 17:20:41,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 17:20:41,880 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-21 17:20:41,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:20:41,881 INFO L85 PathProgramCache]: Analyzing trace with hash -657938527, now seen corresponding path program 1 times [2022-11-21 17:20:41,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:20:41,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804835637] [2022-11-21 17:20:41,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:41,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:20:41,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:41,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:20:41,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:20:41,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804835637] [2022-11-21 17:20:41,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804835637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:20:41,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:20:41,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:20:41,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251333368] [2022-11-21 17:20:41,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:20:41,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:20:41,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:20:41,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:20:41,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:20:41,929 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 193 [2022-11-21 17:20:41,930 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 157 transitions, 363 flow. Second operand has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 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) [2022-11-21 17:20:41,930 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:20:41,930 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 193 [2022-11-21 17:20:41,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:20:41,999 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([467] L57-2-->L57-3: Formula: (= |v_#race~b~0_4| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_4|} AuxVars[] AssignedVars[#race~b~0][97], [Black: 220#true, 42#L57-3true, 227#(= |#race~b~0| 0), 101#L74-4true, Black: 225#true, Black: 211#true, 180#L49-1true, 175#L41-1true, 242#true, 213#(= |#race~a~0| 0), 249#true, 222#(= |#race~c~0| 0)]) [2022-11-21 17:20:42,000 INFO L383 tUnfolder$Statistics]: this new event has 80 ancestors and is cut-off event [2022-11-21 17:20:42,000 INFO L386 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-11-21 17:20:42,000 INFO L386 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-11-21 17:20:42,000 INFO L386 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-11-21 17:20:42,055 INFO L130 PetriNetUnfolder]: 77/536 cut-off events. [2022-11-21 17:20:42,055 INFO L131 PetriNetUnfolder]: For 30/39 co-relation queries the response was YES. [2022-11-21 17:20:42,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 757 conditions, 536 events. 77/536 cut-off events. For 30/39 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2909 event pairs, 14 based on Foata normal form. 7/496 useless extension candidates. Maximal degree in co-relation 679. Up to 49 conditions per place. [2022-11-21 17:20:42,061 INFO L137 encePairwiseOnDemand]: 188/193 looper letters, 10 selfloop transitions, 2 changer transitions 7/157 dead transitions. [2022-11-21 17:20:42,061 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 157 transitions, 393 flow [2022-11-21 17:20:42,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:20:42,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:20:42,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 535 transitions. [2022-11-21 17:20:42,063 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.924006908462867 [2022-11-21 17:20:42,063 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 535 transitions. [2022-11-21 17:20:42,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 535 transitions. [2022-11-21 17:20:42,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:20:42,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 535 transitions. [2022-11-21 17:20:42,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 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) [2022-11-21 17:20:42,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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) [2022-11-21 17:20:42,067 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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) [2022-11-21 17:20:42,067 INFO L175 Difference]: Start difference. First operand has 165 places, 157 transitions, 363 flow. Second operand 3 states and 535 transitions. [2022-11-21 17:20:42,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 157 transitions, 393 flow [2022-11-21 17:20:42,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 157 transitions, 386 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 17:20:42,072 INFO L231 Difference]: Finished difference. Result has 161 places, 148 transitions, 341 flow [2022-11-21 17:20:42,073 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=341, PETRI_PLACES=161, PETRI_TRANSITIONS=148} [2022-11-21 17:20:42,076 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, -13 predicate places. [2022-11-21 17:20:42,076 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 148 transitions, 341 flow [2022-11-21 17:20:42,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 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) [2022-11-21 17:20:42,077 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:20:42,077 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:20:42,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 17:20:42,077 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-21 17:20:42,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:20:42,078 INFO L85 PathProgramCache]: Analyzing trace with hash 345281638, now seen corresponding path program 1 times [2022-11-21 17:20:42,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:20:42,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972483657] [2022-11-21 17:20:42,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:42,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:20:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:42,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:20:42,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:20:42,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972483657] [2022-11-21 17:20:42,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972483657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:20:42,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:20:42,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:20:42,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738210166] [2022-11-21 17:20:42,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:20:42,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:20:42,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:20:42,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:20:42,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:20:42,129 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 193 [2022-11-21 17:20:42,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 148 transitions, 341 flow. Second operand has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 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) [2022-11-21 17:20:42,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:20:42,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 193 [2022-11-21 17:20:42,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:20:42,207 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([467] L57-2-->L57-3: Formula: (= |v_#race~b~0_4| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_4|} AuxVars[] AssignedVars[#race~b~0][97], [Black: 220#true, 253#true, 42#L57-3true, 227#(= |#race~b~0| 0), 101#L74-4true, Black: 225#true, Black: 211#true, 180#L49-1true, 175#L41-1true, 213#(= |#race~a~0| 0), 249#true, 222#(= |#race~c~0| 0)]) [2022-11-21 17:20:42,207 INFO L383 tUnfolder$Statistics]: this new event has 80 ancestors and is cut-off event [2022-11-21 17:20:42,208 INFO L386 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-11-21 17:20:42,208 INFO L386 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-11-21 17:20:42,208 INFO L386 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-11-21 17:20:42,245 INFO L130 PetriNetUnfolder]: 75/559 cut-off events. [2022-11-21 17:20:42,246 INFO L131 PetriNetUnfolder]: For 49/54 co-relation queries the response was YES. [2022-11-21 17:20:42,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 808 conditions, 559 events. 75/559 cut-off events. For 49/54 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3061 event pairs, 23 based on Foata normal form. 0/516 useless extension candidates. Maximal degree in co-relation 733. Up to 81 conditions per place. [2022-11-21 17:20:42,253 INFO L137 encePairwiseOnDemand]: 190/193 looper letters, 11 selfloop transitions, 2 changer transitions 0/149 dead transitions. [2022-11-21 17:20:42,253 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 149 transitions, 371 flow [2022-11-21 17:20:42,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:20:42,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:20:42,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 527 transitions. [2022-11-21 17:20:42,255 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9101899827288429 [2022-11-21 17:20:42,255 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 527 transitions. [2022-11-21 17:20:42,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 527 transitions. [2022-11-21 17:20:42,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:20:42,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 527 transitions. [2022-11-21 17:20:42,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 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) [2022-11-21 17:20:42,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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) [2022-11-21 17:20:42,259 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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) [2022-11-21 17:20:42,260 INFO L175 Difference]: Start difference. First operand has 161 places, 148 transitions, 341 flow. Second operand 3 states and 527 transitions. [2022-11-21 17:20:42,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 149 transitions, 371 flow [2022-11-21 17:20:42,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 149 transitions, 367 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 17:20:42,263 INFO L231 Difference]: Finished difference. Result has 153 places, 147 transitions, 339 flow [2022-11-21 17:20:42,264 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=339, PETRI_PLACES=153, PETRI_TRANSITIONS=147} [2022-11-21 17:20:42,265 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, -21 predicate places. [2022-11-21 17:20:42,265 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 147 transitions, 339 flow [2022-11-21 17:20:42,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 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) [2022-11-21 17:20:42,266 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:20:42,266 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:20:42,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 17:20:42,266 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-21 17:20:42,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:20:42,267 INFO L85 PathProgramCache]: Analyzing trace with hash 175687448, now seen corresponding path program 1 times [2022-11-21 17:20:42,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:20:42,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228931759] [2022-11-21 17:20:42,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:42,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:20:42,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:42,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:20:42,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:20:42,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228931759] [2022-11-21 17:20:42,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228931759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:20:42,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:20:42,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:20:42,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930854017] [2022-11-21 17:20:42,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:20:42,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:20:42,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:20:42,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:20:42,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:20:42,694 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 193 [2022-11-21 17:20:42,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 147 transitions, 339 flow. Second operand has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 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) [2022-11-21 17:20:42,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:20:42,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 193 [2022-11-21 17:20:42,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:20:42,786 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([467] L57-2-->L57-3: Formula: (= |v_#race~b~0_4| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_4|} AuxVars[] AssignedVars[#race~b~0][97], [253#true, Black: 220#true, 42#L57-3true, 101#L74-4true, 227#(= |#race~b~0| 0), Black: 225#true, Black: 211#true, 180#L49-1true, 175#L41-1true, 257#true, 213#(= |#race~a~0| 0), 222#(= |#race~c~0| 0)]) [2022-11-21 17:20:42,787 INFO L383 tUnfolder$Statistics]: this new event has 80 ancestors and is cut-off event [2022-11-21 17:20:42,787 INFO L386 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-11-21 17:20:42,787 INFO L386 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-11-21 17:20:42,787 INFO L386 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-11-21 17:20:42,825 INFO L130 PetriNetUnfolder]: 44/402 cut-off events. [2022-11-21 17:20:42,826 INFO L131 PetriNetUnfolder]: For 1/9 co-relation queries the response was YES. [2022-11-21 17:20:42,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 555 conditions, 402 events. 44/402 cut-off events. For 1/9 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1863 event pairs, 5 based on Foata normal form. 0/373 useless extension candidates. Maximal degree in co-relation 473. Up to 31 conditions per place. [2022-11-21 17:20:42,831 INFO L137 encePairwiseOnDemand]: 188/193 looper letters, 21 selfloop transitions, 4 changer transitions 0/146 dead transitions. [2022-11-21 17:20:42,832 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 146 transitions, 387 flow [2022-11-21 17:20:42,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 17:20:42,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 17:20:42,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 974 transitions. [2022-11-21 17:20:42,835 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8411053540587219 [2022-11-21 17:20:42,835 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 974 transitions. [2022-11-21 17:20:42,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 974 transitions. [2022-11-21 17:20:42,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:20:42,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 974 transitions. [2022-11-21 17:20:42,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 162.33333333333334) internal successors, (974), 6 states have internal predecessors, (974), 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) [2022-11-21 17:20:42,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 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) [2022-11-21 17:20:42,842 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 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) [2022-11-21 17:20:42,842 INFO L175 Difference]: Start difference. First operand has 153 places, 147 transitions, 339 flow. Second operand 6 states and 974 transitions. [2022-11-21 17:20:42,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 146 transitions, 387 flow [2022-11-21 17:20:42,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 146 transitions, 383 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 17:20:42,846 INFO L231 Difference]: Finished difference. Result has 155 places, 146 transitions, 341 flow [2022-11-21 17:20:42,846 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=341, PETRI_PLACES=155, PETRI_TRANSITIONS=146} [2022-11-21 17:20:42,847 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, -19 predicate places. [2022-11-21 17:20:42,847 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 146 transitions, 341 flow [2022-11-21 17:20:42,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 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) [2022-11-21 17:20:42,848 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:20:42,848 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:20:42,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 17:20:42,848 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-21 17:20:42,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:20:42,849 INFO L85 PathProgramCache]: Analyzing trace with hash -838188885, now seen corresponding path program 1 times [2022-11-21 17:20:42,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:20:42,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132672840] [2022-11-21 17:20:42,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:42,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:20:42,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:43,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:20:43,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:20:43,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132672840] [2022-11-21 17:20:43,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132672840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:20:43,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:20:43,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:20:43,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762043110] [2022-11-21 17:20:43,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:20:43,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:20:43,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:20:43,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:20:43,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:20:43,343 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 193 [2022-11-21 17:20:43,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 146 transitions, 341 flow. Second operand has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 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) [2022-11-21 17:20:43,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:20:43,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 193 [2022-11-21 17:20:43,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:20:43,443 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([467] L57-2-->L57-3: Formula: (= |v_#race~b~0_4| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_4|} AuxVars[] AssignedVars[#race~b~0][97], [Black: 220#true, 42#L57-3true, 101#L74-4true, 227#(= |#race~b~0| 0), Black: 225#true, Black: 211#true, 180#L49-1true, 175#L41-1true, 257#true, 213#(= |#race~a~0| 0), 264#true, 222#(= |#race~c~0| 0)]) [2022-11-21 17:20:43,443 INFO L383 tUnfolder$Statistics]: this new event has 80 ancestors and is cut-off event [2022-11-21 17:20:43,443 INFO L386 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-11-21 17:20:43,444 INFO L386 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-11-21 17:20:43,444 INFO L386 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-11-21 17:20:43,481 INFO L130 PetriNetUnfolder]: 44/400 cut-off events. [2022-11-21 17:20:43,481 INFO L131 PetriNetUnfolder]: For 3/11 co-relation queries the response was YES. [2022-11-21 17:20:43,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 400 events. 44/400 cut-off events. For 3/11 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1857 event pairs, 5 based on Foata normal form. 0/373 useless extension candidates. Maximal degree in co-relation 479. Up to 31 conditions per place. [2022-11-21 17:20:43,486 INFO L137 encePairwiseOnDemand]: 188/193 looper letters, 0 selfloop transitions, 0 changer transitions 145/145 dead transitions. [2022-11-21 17:20:43,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 145 transitions, 387 flow [2022-11-21 17:20:43,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 17:20:43,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 17:20:43,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 973 transitions. [2022-11-21 17:20:43,490 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8402417962003454 [2022-11-21 17:20:43,490 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 973 transitions. [2022-11-21 17:20:43,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 973 transitions. [2022-11-21 17:20:43,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:20:43,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 973 transitions. [2022-11-21 17:20:43,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 162.16666666666666) internal successors, (973), 6 states have internal predecessors, (973), 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) [2022-11-21 17:20:43,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 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) [2022-11-21 17:20:43,498 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 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) [2022-11-21 17:20:43,498 INFO L175 Difference]: Start difference. First operand has 155 places, 146 transitions, 341 flow. Second operand 6 states and 973 transitions. [2022-11-21 17:20:43,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 145 transitions, 387 flow [2022-11-21 17:20:43,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 145 transitions, 380 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 17:20:43,501 INFO L231 Difference]: Finished difference. Result has 155 places, 0 transitions, 0 flow [2022-11-21 17:20:43,502 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=155, PETRI_TRANSITIONS=0} [2022-11-21 17:20:43,503 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, -19 predicate places. [2022-11-21 17:20:43,504 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 0 transitions, 0 flow [2022-11-21 17:20:43,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 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) [2022-11-21 17:20:43,507 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONDATA_RACE (37 of 38 remaining) [2022-11-21 17:20:43,508 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONDATA_RACE (36 of 38 remaining) [2022-11-21 17:20:43,508 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONDATA_RACE (35 of 38 remaining) [2022-11-21 17:20:43,509 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONDATA_RACE (34 of 38 remaining) [2022-11-21 17:20:43,510 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONDATA_RACE (33 of 38 remaining) [2022-11-21 17:20:43,511 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONDATA_RACE (32 of 38 remaining) [2022-11-21 17:20:43,511 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONDATA_RACE (31 of 38 remaining) [2022-11-21 17:20:43,511 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONDATA_RACE (30 of 38 remaining) [2022-11-21 17:20:43,512 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONDATA_RACE (29 of 38 remaining) [2022-11-21 17:20:43,512 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONDATA_RACE (28 of 38 remaining) [2022-11-21 17:20:43,512 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONDATA_RACE (27 of 38 remaining) [2022-11-21 17:20:43,512 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONDATA_RACE (26 of 38 remaining) [2022-11-21 17:20:43,513 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONDATA_RACE (25 of 38 remaining) [2022-11-21 17:20:43,513 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (24 of 38 remaining) [2022-11-21 17:20:43,513 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (23 of 38 remaining) [2022-11-21 17:20:43,513 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (22 of 38 remaining) [2022-11-21 17:20:43,514 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (21 of 38 remaining) [2022-11-21 17:20:43,514 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (20 of 38 remaining) [2022-11-21 17:20:43,514 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (19 of 38 remaining) [2022-11-21 17:20:43,514 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (18 of 38 remaining) [2022-11-21 17:20:43,515 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (17 of 38 remaining) [2022-11-21 17:20:43,515 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (16 of 38 remaining) [2022-11-21 17:20:43,515 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 38 remaining) [2022-11-21 17:20:43,515 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 38 remaining) [2022-11-21 17:20:43,515 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 38 remaining) [2022-11-21 17:20:43,516 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONDATA_RACE (12 of 38 remaining) [2022-11-21 17:20:43,516 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONDATA_RACE (11 of 38 remaining) [2022-11-21 17:20:43,516 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONDATA_RACE (10 of 38 remaining) [2022-11-21 17:20:43,516 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONDATA_RACE (9 of 38 remaining) [2022-11-21 17:20:43,517 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONDATA_RACE (8 of 38 remaining) [2022-11-21 17:20:43,517 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONDATA_RACE (7 of 38 remaining) [2022-11-21 17:20:43,517 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONDATA_RACE (6 of 38 remaining) [2022-11-21 17:20:43,517 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONDATA_RACE (5 of 38 remaining) [2022-11-21 17:20:43,518 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONDATA_RACE (4 of 38 remaining) [2022-11-21 17:20:43,518 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONDATA_RACE (3 of 38 remaining) [2022-11-21 17:20:43,518 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONDATA_RACE (2 of 38 remaining) [2022-11-21 17:20:43,518 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONDATA_RACE (1 of 38 remaining) [2022-11-21 17:20:43,519 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONDATA_RACE (0 of 38 remaining) [2022-11-21 17:20:43,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 17:20:43,519 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:20:43,527 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-21 17:20:43,528 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 17:20:43,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 05:20:43 BasicIcfg [2022-11-21 17:20:43,535 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 17:20:43,535 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 17:20:43,536 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 17:20:43,536 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 17:20:43,536 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:20:37" (3/4) ... [2022-11-21 17:20:43,540 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-21 17:20:43,547 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-21 17:20:43,547 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-21 17:20:43,548 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-21 17:20:43,554 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-11-21 17:20:43,555 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-21 17:20:43,555 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-21 17:20:43,556 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-21 17:20:43,609 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1468d4f-6fd4-45bf-bc9a-6c51b804c950/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 17:20:43,610 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 17:20:43,610 INFO L158 Benchmark]: Toolchain (without parser) took 7374.39ms. Allocated memory was 169.9MB in the beginning and 247.5MB in the end (delta: 77.6MB). Free memory was 140.9MB in the beginning and 154.4MB in the end (delta: -13.5MB). Peak memory consumption was 63.8MB. Max. memory is 16.1GB. [2022-11-21 17:20:43,611 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 130.0MB. Free memory was 99.5MB in the beginning and 99.5MB in the end (delta: 72.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 17:20:43,611 INFO L158 Benchmark]: CACSL2BoogieTranslator took 457.84ms. Allocated memory is still 169.9MB. Free memory was 140.9MB in the beginning and 136.5MB in the end (delta: 4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-21 17:20:43,612 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.94ms. Allocated memory is still 169.9MB. Free memory was 136.5MB in the beginning and 135.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 17:20:43,612 INFO L158 Benchmark]: Boogie Preprocessor took 46.42ms. Allocated memory is still 169.9MB. Free memory was 135.2MB in the beginning and 133.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 17:20:43,612 INFO L158 Benchmark]: RCFGBuilder took 808.59ms. Allocated memory is still 169.9MB. Free memory was 133.1MB in the beginning and 114.9MB in the end (delta: 18.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-21 17:20:43,613 INFO L158 Benchmark]: TraceAbstraction took 5910.01ms. Allocated memory was 169.9MB in the beginning and 247.5MB in the end (delta: 77.6MB). Free memory was 114.2MB in the beginning and 157.5MB in the end (delta: -43.3MB). Peak memory consumption was 36.4MB. Max. memory is 16.1GB. [2022-11-21 17:20:43,613 INFO L158 Benchmark]: Witness Printer took 74.44ms. Allocated memory is still 247.5MB. Free memory was 157.5MB in the beginning and 154.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-21 17:20:43,618 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 130.0MB. Free memory was 99.5MB in the beginning and 99.5MB in the end (delta: 72.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 457.84ms. Allocated memory is still 169.9MB. Free memory was 140.9MB in the beginning and 136.5MB in the end (delta: 4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.94ms. Allocated memory is still 169.9MB. Free memory was 136.5MB in the beginning and 135.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 46.42ms. Allocated memory is still 169.9MB. Free memory was 135.2MB in the beginning and 133.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 808.59ms. Allocated memory is still 169.9MB. Free memory was 133.1MB in the beginning and 114.9MB in the end (delta: 18.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 5910.01ms. Allocated memory was 169.9MB in the beginning and 247.5MB in the end (delta: 77.6MB). Free memory was 114.2MB in the beginning and 157.5MB in the end (delta: -43.3MB). Peak memory consumption was 36.4MB. Max. memory is 16.1GB. * Witness Printer took 74.44ms. Allocated memory is still 247.5MB. Free memory was 157.5MB in the beginning and 154.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 41]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 42]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 42]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 42]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 49]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 50]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 50]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 50]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 57]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 57]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 58]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 58]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 58]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 68]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 69]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 70]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 75]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 76]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 77]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 79]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 79]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 79]: there are no data races For all program executions holds that there are no data races at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 262 locations, 38 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.6s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 62 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 62 mSDsluCounter, 117 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 44 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 373 IncrementalHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 44 mSolverCounterUnsat, 117 mSDtfsCounter, 373 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=367occurred in iteration=8, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 825 NumberOfCodeBlocks, 825 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 810 ConstructedInterpolants, 0 QuantifiedInterpolants, 1077 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 22 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-21 17:20:43,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1468d4f-6fd4-45bf-bc9a-6c51b804c950/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE