./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e04fb08f 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_4f00591b-2c7d-4b69-adbe-259c346e70a3/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f00591b-2c7d-4b69-adbe-259c346e70a3/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f00591b-2c7d-4b69-adbe-259c346e70a3/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f00591b-2c7d-4b69-adbe-259c346e70a3/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f00591b-2c7d-4b69-adbe-259c346e70a3/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f00591b-2c7d-4b69-adbe-259c346e70a3/bin/uautomizer-tPACEb0tL8 --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 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 --- 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-e04fb08 [2022-11-16 11:50:13,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:50:13,171 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:50:13,201 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:50:13,205 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:50:13,211 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:50:13,214 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:50:13,217 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:50:13,223 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:50:13,225 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:50:13,227 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:50:13,229 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:50:13,230 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:50:13,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:50:13,235 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:50:13,237 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:50:13,239 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:50:13,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:50:13,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:50:13,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:50:13,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:50:13,256 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:50:13,257 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:50:13,259 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:50:13,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:50:13,267 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:50:13,267 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:50:13,268 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:50:13,270 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:50:13,271 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:50:13,272 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:50:13,273 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:50:13,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:50:13,277 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:50:13,278 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:50:13,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:50:13,279 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:50:13,280 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:50:13,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:50:13,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:50:13,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:50:13,283 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f00591b-2c7d-4b69-adbe-259c346e70a3/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-16 11:50:13,323 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:50:13,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:50:13,324 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:50:13,324 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:50:13,325 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:50:13,325 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:50:13,326 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:50:13,326 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:50:13,326 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:50:13,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:50:13,327 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:50:13,327 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:50:13,327 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:50:13,327 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:50:13,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:50:13,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:50:13,328 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:50:13,328 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:50:13,328 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-16 11:50:13,329 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:50:13,329 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:50:13,329 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:50:13,329 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:50:13,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:50:13,330 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:50:13,330 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:50:13,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:50:13,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:50:13,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:50:13,331 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:50:13,331 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:50:13,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:50:13,332 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:50:13,332 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:50:13,332 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:50:13,332 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_4f00591b-2c7d-4b69-adbe-259c346e70a3/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f00591b-2c7d-4b69-adbe-259c346e70a3/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 [2022-11-16 11:50:13,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:50:13,689 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:50:13,692 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:50:13,693 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:50:13,694 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:50:13,695 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f00591b-2c7d-4b69-adbe-259c346e70a3/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i [2022-11-16 11:50:13,782 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f00591b-2c7d-4b69-adbe-259c346e70a3/bin/uautomizer-tPACEb0tL8/data/fe47e0bc2/ccbb940f89154d66a7f3fc8e2cd7b30f/FLAG88edac2ff [2022-11-16 11:50:14,438 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:50:14,439 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f00591b-2c7d-4b69-adbe-259c346e70a3/sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i [2022-11-16 11:50:14,451 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f00591b-2c7d-4b69-adbe-259c346e70a3/bin/uautomizer-tPACEb0tL8/data/fe47e0bc2/ccbb940f89154d66a7f3fc8e2cd7b30f/FLAG88edac2ff [2022-11-16 11:50:14,677 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f00591b-2c7d-4b69-adbe-259c346e70a3/bin/uautomizer-tPACEb0tL8/data/fe47e0bc2/ccbb940f89154d66a7f3fc8e2cd7b30f [2022-11-16 11:50:14,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:50:14,681 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:50:14,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:50:14,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:50:14,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:50:14,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:50:14" (1/1) ... [2022-11-16 11:50:14,693 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f77ac7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:14, skipping insertion in model container [2022-11-16 11:50:14,693 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:50:14" (1/1) ... [2022-11-16 11:50:14,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:50:14,761 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:50:15,161 WARN L229 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_4f00591b-2c7d-4b69-adbe-259c346e70a3/sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i[30176,30189] [2022-11-16 11:50:15,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:50:15,227 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:50:15,279 WARN L229 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_4f00591b-2c7d-4b69-adbe-259c346e70a3/sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i[30176,30189] [2022-11-16 11:50:15,296 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:50:15,328 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:50:15,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:15 WrapperNode [2022-11-16 11:50:15,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:50:15,330 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:50:15,331 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:50:15,331 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:50:15,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:15" (1/1) ... [2022-11-16 11:50:15,353 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:15" (1/1) ... [2022-11-16 11:50:15,380 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 99 [2022-11-16 11:50:15,383 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:50:15,384 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:50:15,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:50:15,384 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:50:15,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:15" (1/1) ... [2022-11-16 11:50:15,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:15" (1/1) ... [2022-11-16 11:50:15,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:15" (1/1) ... [2022-11-16 11:50:15,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:15" (1/1) ... [2022-11-16 11:50:15,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:15" (1/1) ... [2022-11-16 11:50:15,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:15" (1/1) ... [2022-11-16 11:50:15,438 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:15" (1/1) ... [2022-11-16 11:50:15,439 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:15" (1/1) ... [2022-11-16 11:50:15,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:50:15,443 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:50:15,443 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:50:15,443 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:50:15,444 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:15" (1/1) ... [2022-11-16 11:50:15,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:50:15,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f00591b-2c7d-4b69-adbe-259c346e70a3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:50:15,476 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f00591b-2c7d-4b69-adbe-259c346e70a3/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:50:15,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f00591b-2c7d-4b69-adbe-259c346e70a3/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:50:15,530 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:50:15,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:50:15,530 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 11:50:15,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:50:15,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:50:15,531 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-16 11:50:15,531 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-16 11:50:15,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:50:15,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:50:15,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:50:15,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:50:15,533 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:50:15,766 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:50:15,768 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:50:16,133 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:50:16,141 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:50:16,141 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-16 11:50:16,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:50:16 BoogieIcfgContainer [2022-11-16 11:50:16,143 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:50:16,149 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:50:16,150 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:50:16,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:50:16,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:50:14" (1/3) ... [2022-11-16 11:50:16,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a4e8add and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:50:16, skipping insertion in model container [2022-11-16 11:50:16,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:15" (2/3) ... [2022-11-16 11:50:16,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a4e8add and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:50:16, skipping insertion in model container [2022-11-16 11:50:16,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:50:16" (3/3) ... [2022-11-16 11:50:16,159 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_37-indirect_racing.i [2022-11-16 11:50:16,169 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:50:16,181 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:50:16,181 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-16 11:50:16,181 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:50:16,321 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-16 11:50:16,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 175 transitions, 358 flow [2022-11-16 11:50:16,533 INFO L130 PetriNetUnfolder]: 17/224 cut-off events. [2022-11-16 11:50:16,533 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 11:50:16,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 224 events. 17/224 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 658 event pairs, 0 based on Foata normal form. 0/189 useless extension candidates. Maximal degree in co-relation 120. Up to 6 conditions per place. [2022-11-16 11:50:16,542 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 175 transitions, 358 flow [2022-11-16 11:50:16,552 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 175 transitions, 358 flow [2022-11-16 11:50:16,580 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:50:16,587 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;@3b59ea7c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:50:16,588 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-16 11:50:16,622 INFO L130 PetriNetUnfolder]: 0/34 cut-off events. [2022-11-16 11:50:16,624 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:50:16,624 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:16,625 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] [2022-11-16 11:50:16,625 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-11-16 11:50:16,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:16,633 INFO L85 PathProgramCache]: Analyzing trace with hash -839207750, now seen corresponding path program 1 times [2022-11-16 11:50:16,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:16,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993017766] [2022-11-16 11:50:16,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:16,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:16,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:16,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:50:16,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:16,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993017766] [2022-11-16 11:50:16,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993017766] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:16,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:16,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:50:16,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016162013] [2022-11-16 11:50:16,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:16,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:50:16,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:16,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:50:17,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:50:17,006 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 175 [2022-11-16 11:50:17,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 175 transitions, 358 flow. Second operand has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 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) [2022-11-16 11:50:17,014 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:17,014 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 175 [2022-11-16 11:50:17,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:17,129 INFO L130 PetriNetUnfolder]: 1/205 cut-off events. [2022-11-16 11:50:17,129 INFO L131 PetriNetUnfolder]: For 4/8 co-relation queries the response was YES. [2022-11-16 11:50:17,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 205 events. 1/205 cut-off events. For 4/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 331 event pairs, 0 based on Foata normal form. 22/207 useless extension candidates. Maximal degree in co-relation 4. Up to 15 conditions per place. [2022-11-16 11:50:17,133 INFO L137 encePairwiseOnDemand]: 161/175 looper letters, 11 selfloop transitions, 2 changer transitions 0/162 dead transitions. [2022-11-16 11:50:17,134 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 162 transitions, 358 flow [2022-11-16 11:50:17,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:50:17,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:50:17,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 472 transitions. [2022-11-16 11:50:17,161 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8990476190476191 [2022-11-16 11:50:17,162 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 472 transitions. [2022-11-16 11:50:17,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 472 transitions. [2022-11-16 11:50:17,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:17,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 472 transitions. [2022-11-16 11:50:17,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 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) [2022-11-16 11:50:17,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 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) [2022-11-16 11:50:17,181 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 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) [2022-11-16 11:50:17,183 INFO L175 Difference]: Start difference. First operand has 166 places, 175 transitions, 358 flow. Second operand 3 states and 472 transitions. [2022-11-16 11:50:17,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 162 transitions, 358 flow [2022-11-16 11:50:17,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 162 transitions, 358 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:50:17,192 INFO L231 Difference]: Finished difference. Result has 166 places, 162 transitions, 336 flow [2022-11-16 11:50:17,194 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=336, PETRI_PLACES=166, PETRI_TRANSITIONS=162} [2022-11-16 11:50:17,198 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 0 predicate places. [2022-11-16 11:50:17,198 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 162 transitions, 336 flow [2022-11-16 11:50:17,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 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) [2022-11-16 11:50:17,199 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:17,199 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] [2022-11-16 11:50:17,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:50:17,200 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-11-16 11:50:17,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:17,200 INFO L85 PathProgramCache]: Analyzing trace with hash 975216582, now seen corresponding path program 1 times [2022-11-16 11:50:17,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:17,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540048661] [2022-11-16 11:50:17,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:17,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:17,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:17,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:50:17,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:17,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540048661] [2022-11-16 11:50:17,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540048661] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:17,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:17,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:50:17,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026941948] [2022-11-16 11:50:17,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:17,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:50:17,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:17,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:50:17,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:50:17,274 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 175 [2022-11-16 11:50:17,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 162 transitions, 336 flow. Second operand has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 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) [2022-11-16 11:50:17,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:17,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 175 [2022-11-16 11:50:17,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:17,325 INFO L130 PetriNetUnfolder]: 1/202 cut-off events. [2022-11-16 11:50:17,326 INFO L131 PetriNetUnfolder]: For 5/8 co-relation queries the response was YES. [2022-11-16 11:50:17,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 202 events. 1/202 cut-off events. For 5/8 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 321 event pairs, 0 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 177. Up to 8 conditions per place. [2022-11-16 11:50:17,327 INFO L137 encePairwiseOnDemand]: 172/175 looper letters, 7 selfloop transitions, 1 changer transitions 0/160 dead transitions. [2022-11-16 11:50:17,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 160 transitions, 348 flow [2022-11-16 11:50:17,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:50:17,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:50:17,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 466 transitions. [2022-11-16 11:50:17,330 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8876190476190476 [2022-11-16 11:50:17,330 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 466 transitions. [2022-11-16 11:50:17,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 466 transitions. [2022-11-16 11:50:17,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:17,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 466 transitions. [2022-11-16 11:50:17,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 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) [2022-11-16 11:50:17,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 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) [2022-11-16 11:50:17,337 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 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) [2022-11-16 11:50:17,338 INFO L175 Difference]: Start difference. First operand has 166 places, 162 transitions, 336 flow. Second operand 3 states and 466 transitions. [2022-11-16 11:50:17,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 160 transitions, 348 flow [2022-11-16 11:50:17,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 160 transitions, 344 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:50:17,346 INFO L231 Difference]: Finished difference. Result has 164 places, 160 transitions, 330 flow [2022-11-16 11:50:17,347 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=330, PETRI_PLACES=164, PETRI_TRANSITIONS=160} [2022-11-16 11:50:17,348 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, -2 predicate places. [2022-11-16 11:50:17,348 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 160 transitions, 330 flow [2022-11-16 11:50:17,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 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) [2022-11-16 11:50:17,349 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:17,349 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] [2022-11-16 11:50:17,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:50:17,351 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-11-16 11:50:17,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:17,352 INFO L85 PathProgramCache]: Analyzing trace with hash -162438224, now seen corresponding path program 1 times [2022-11-16 11:50:17,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:17,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002822907] [2022-11-16 11:50:17,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:17,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:17,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:50:17,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:17,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002822907] [2022-11-16 11:50:17,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002822907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:17,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:17,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:50:17,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217494063] [2022-11-16 11:50:17,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:17,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:50:17,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:17,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:50:17,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:50:17,489 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 175 [2022-11-16 11:50:17,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 160 transitions, 330 flow. Second operand has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 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) [2022-11-16 11:50:17,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:17,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 175 [2022-11-16 11:50:17,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:17,541 INFO L130 PetriNetUnfolder]: 1/201 cut-off events. [2022-11-16 11:50:17,541 INFO L131 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-11-16 11:50:17,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 201 events. 1/201 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 320 event pairs, 0 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 181. Up to 12 conditions per place. [2022-11-16 11:50:17,543 INFO L137 encePairwiseOnDemand]: 172/175 looper letters, 11 selfloop transitions, 2 changer transitions 0/159 dead transitions. [2022-11-16 11:50:17,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 159 transitions, 354 flow [2022-11-16 11:50:17,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:50:17,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:50:17,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 461 transitions. [2022-11-16 11:50:17,545 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.878095238095238 [2022-11-16 11:50:17,545 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 461 transitions. [2022-11-16 11:50:17,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 461 transitions. [2022-11-16 11:50:17,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:17,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 461 transitions. [2022-11-16 11:50:17,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 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) [2022-11-16 11:50:17,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 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) [2022-11-16 11:50:17,548 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 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) [2022-11-16 11:50:17,548 INFO L175 Difference]: Start difference. First operand has 164 places, 160 transitions, 330 flow. Second operand 3 states and 461 transitions. [2022-11-16 11:50:17,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 159 transitions, 354 flow [2022-11-16 11:50:17,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 159 transitions, 353 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:50:17,552 INFO L231 Difference]: Finished difference. Result has 164 places, 159 transitions, 331 flow [2022-11-16 11:50:17,552 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=327, 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=331, PETRI_PLACES=164, PETRI_TRANSITIONS=159} [2022-11-16 11:50:17,553 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, -2 predicate places. [2022-11-16 11:50:17,553 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 159 transitions, 331 flow [2022-11-16 11:50:17,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 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) [2022-11-16 11:50:17,554 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:17,554 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] [2022-11-16 11:50:17,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:50:17,555 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-11-16 11:50:17,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:17,555 INFO L85 PathProgramCache]: Analyzing trace with hash -2104398315, now seen corresponding path program 1 times [2022-11-16 11:50:17,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:17,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834623801] [2022-11-16 11:50:17,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:17,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:17,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:50:17,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:17,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834623801] [2022-11-16 11:50:17,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834623801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:17,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:17,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:50:17,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834558923] [2022-11-16 11:50:17,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:17,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:50:17,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:17,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:50:17,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:50:17,729 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 175 [2022-11-16 11:50:17,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 159 transitions, 331 flow. Second operand has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 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) [2022-11-16 11:50:17,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:17,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 175 [2022-11-16 11:50:17,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:17,795 INFO L130 PetriNetUnfolder]: 0/178 cut-off events. [2022-11-16 11:50:17,796 INFO L131 PetriNetUnfolder]: For 3/9 co-relation queries the response was YES. [2022-11-16 11:50:17,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 178 events. 0/178 cut-off events. For 3/9 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 157 event pairs, 0 based on Foata normal form. 1/166 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2022-11-16 11:50:17,797 INFO L137 encePairwiseOnDemand]: 172/175 looper letters, 9 selfloop transitions, 2 changer transitions 0/161 dead transitions. [2022-11-16 11:50:17,797 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 161 transitions, 357 flow [2022-11-16 11:50:17,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:50:17,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:50:17,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 474 transitions. [2022-11-16 11:50:17,799 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9028571428571428 [2022-11-16 11:50:17,799 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 474 transitions. [2022-11-16 11:50:17,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 474 transitions. [2022-11-16 11:50:17,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:17,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 474 transitions. [2022-11-16 11:50:17,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 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) [2022-11-16 11:50:17,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 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) [2022-11-16 11:50:17,809 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 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) [2022-11-16 11:50:17,809 INFO L175 Difference]: Start difference. First operand has 164 places, 159 transitions, 331 flow. Second operand 3 states and 474 transitions. [2022-11-16 11:50:17,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 161 transitions, 357 flow [2022-11-16 11:50:17,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 161 transitions, 353 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:50:17,813 INFO L231 Difference]: Finished difference. Result has 165 places, 159 transitions, 335 flow [2022-11-16 11:50:17,814 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=327, 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=335, PETRI_PLACES=165, PETRI_TRANSITIONS=159} [2022-11-16 11:50:17,816 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, -1 predicate places. [2022-11-16 11:50:17,817 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 159 transitions, 335 flow [2022-11-16 11:50:17,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 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) [2022-11-16 11:50:17,823 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:17,823 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] [2022-11-16 11:50:17,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:50:17,824 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-11-16 11:50:17,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:17,826 INFO L85 PathProgramCache]: Analyzing trace with hash -371344977, now seen corresponding path program 1 times [2022-11-16 11:50:17,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:17,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463058910] [2022-11-16 11:50:17,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:17,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:17,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:50:17,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:17,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463058910] [2022-11-16 11:50:17,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463058910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:17,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:17,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:50:17,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385515342] [2022-11-16 11:50:17,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:17,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:50:17,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:17,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:50:17,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:50:17,942 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 175 [2022-11-16 11:50:17,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 159 transitions, 335 flow. Second operand has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 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) [2022-11-16 11:50:17,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:17,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 175 [2022-11-16 11:50:17,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:18,012 INFO L130 PetriNetUnfolder]: 0/176 cut-off events. [2022-11-16 11:50:18,013 INFO L131 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-11-16 11:50:18,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 176 events. 0/176 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 147 event pairs, 0 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2022-11-16 11:50:18,014 INFO L137 encePairwiseOnDemand]: 172/175 looper letters, 7 selfloop transitions, 1 changer transitions 0/157 dead transitions. [2022-11-16 11:50:18,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 157 transitions, 347 flow [2022-11-16 11:50:18,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:50:18,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:50:18,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 466 transitions. [2022-11-16 11:50:18,016 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8876190476190476 [2022-11-16 11:50:18,016 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 466 transitions. [2022-11-16 11:50:18,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 466 transitions. [2022-11-16 11:50:18,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:18,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 466 transitions. [2022-11-16 11:50:18,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 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) [2022-11-16 11:50:18,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 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) [2022-11-16 11:50:18,021 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 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) [2022-11-16 11:50:18,021 INFO L175 Difference]: Start difference. First operand has 165 places, 159 transitions, 335 flow. Second operand 3 states and 466 transitions. [2022-11-16 11:50:18,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 157 transitions, 347 flow [2022-11-16 11:50:18,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 157 transitions, 343 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:50:18,026 INFO L231 Difference]: Finished difference. Result has 163 places, 157 transitions, 329 flow [2022-11-16 11:50:18,027 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=329, PETRI_PLACES=163, PETRI_TRANSITIONS=157} [2022-11-16 11:50:18,030 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, -3 predicate places. [2022-11-16 11:50:18,031 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 157 transitions, 329 flow [2022-11-16 11:50:18,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 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) [2022-11-16 11:50:18,032 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:18,032 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:50:18,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:50:18,033 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-11-16 11:50:18,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:18,035 INFO L85 PathProgramCache]: Analyzing trace with hash -421316513, now seen corresponding path program 1 times [2022-11-16 11:50:18,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:18,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451796112] [2022-11-16 11:50:18,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:18,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:18,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:50:18,088 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:50:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:50:18,157 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:50:18,157 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:50:18,159 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-11-16 11:50:18,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2022-11-16 11:50:18,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2022-11-16 11:50:18,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2022-11-16 11:50:18,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2022-11-16 11:50:18,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2022-11-16 11:50:18,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2022-11-16 11:50:18,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2022-11-16 11:50:18,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2022-11-16 11:50:18,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2022-11-16 11:50:18,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2022-11-16 11:50:18,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 19 remaining) [2022-11-16 11:50:18,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2022-11-16 11:50:18,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2022-11-16 11:50:18,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2022-11-16 11:50:18,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2022-11-16 11:50:18,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2022-11-16 11:50:18,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2022-11-16 11:50:18,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2022-11-16 11:50:18,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:50:18,167 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-16 11:50:18,169 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:50:18,170 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-16 11:50:18,213 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 11:50:18,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 229 places, 243 transitions, 504 flow [2022-11-16 11:50:18,326 INFO L130 PetriNetUnfolder]: 31/372 cut-off events. [2022-11-16 11:50:18,326 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-16 11:50:18,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386 conditions, 372 events. 31/372 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1432 event pairs, 0 based on Foata normal form. 0/312 useless extension candidates. Maximal degree in co-relation 226. Up to 9 conditions per place. [2022-11-16 11:50:18,331 INFO L82 GeneralOperation]: Start removeDead. Operand has 229 places, 243 transitions, 504 flow [2022-11-16 11:50:18,336 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 229 places, 243 transitions, 504 flow [2022-11-16 11:50:18,337 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:50:18,338 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;@3b59ea7c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:50:18,339 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-16 11:50:18,342 INFO L130 PetriNetUnfolder]: 0/34 cut-off events. [2022-11-16 11:50:18,342 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:50:18,343 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:18,343 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] [2022-11-16 11:50:18,343 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-16 11:50:18,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:18,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1792148147, now seen corresponding path program 1 times [2022-11-16 11:50:18,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:18,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88735940] [2022-11-16 11:50:18,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:18,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:18,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:18,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:50:18,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:18,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88735940] [2022-11-16 11:50:18,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88735940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:18,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:18,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:50:18,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542954613] [2022-11-16 11:50:18,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:18,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:50:18,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:18,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:50:18,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:50:18,396 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 243 [2022-11-16 11:50:18,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 243 transitions, 504 flow. Second operand has 3 states, 3 states have (on average 210.33333333333334) internal successors, (631), 3 states have internal predecessors, (631), 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) [2022-11-16 11:50:18,398 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:18,398 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 243 [2022-11-16 11:50:18,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:18,511 INFO L130 PetriNetUnfolder]: 3/340 cut-off events. [2022-11-16 11:50:18,511 INFO L131 PetriNetUnfolder]: For 28/66 co-relation queries the response was YES. [2022-11-16 11:50:18,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 378 conditions, 340 events. 3/340 cut-off events. For 28/66 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 912 event pairs, 0 based on Foata normal form. 60/365 useless extension candidates. Maximal degree in co-relation 223. Up to 22 conditions per place. [2022-11-16 11:50:18,514 INFO L137 encePairwiseOnDemand]: 223/243 looper letters, 13 selfloop transitions, 2 changer transitions 0/224 dead transitions. [2022-11-16 11:50:18,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 224 transitions, 496 flow [2022-11-16 11:50:18,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:50:18,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:50:18,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 660 transitions. [2022-11-16 11:50:18,517 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9053497942386831 [2022-11-16 11:50:18,517 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 660 transitions. [2022-11-16 11:50:18,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 660 transitions. [2022-11-16 11:50:18,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:18,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 660 transitions. [2022-11-16 11:50:18,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 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) [2022-11-16 11:50:18,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 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) [2022-11-16 11:50:18,522 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 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) [2022-11-16 11:50:18,523 INFO L175 Difference]: Start difference. First operand has 229 places, 243 transitions, 504 flow. Second operand 3 states and 660 transitions. [2022-11-16 11:50:18,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 224 transitions, 496 flow [2022-11-16 11:50:18,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 224 transitions, 496 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:50:18,528 INFO L231 Difference]: Finished difference. Result has 229 places, 224 transitions, 470 flow [2022-11-16 11:50:18,528 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=470, PETRI_PLACES=229, PETRI_TRANSITIONS=224} [2022-11-16 11:50:18,530 INFO L288 CegarLoopForPetriNet]: 229 programPoint places, 0 predicate places. [2022-11-16 11:50:18,530 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 224 transitions, 470 flow [2022-11-16 11:50:18,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.33333333333334) internal successors, (631), 3 states have internal predecessors, (631), 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) [2022-11-16 11:50:18,531 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:18,532 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] [2022-11-16 11:50:18,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:50:18,532 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-16 11:50:18,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:18,533 INFO L85 PathProgramCache]: Analyzing trace with hash 27536889, now seen corresponding path program 1 times [2022-11-16 11:50:18,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:18,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021747284] [2022-11-16 11:50:18,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:18,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:18,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:50:18,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:18,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021747284] [2022-11-16 11:50:18,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021747284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:18,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:18,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:50:18,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871207792] [2022-11-16 11:50:18,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:18,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:50:18,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:18,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:50:18,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:50:18,587 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 243 [2022-11-16 11:50:18,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 224 transitions, 470 flow. Second operand has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 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) [2022-11-16 11:50:18,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:18,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 243 [2022-11-16 11:50:18,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:18,678 INFO L130 PetriNetUnfolder]: 3/336 cut-off events. [2022-11-16 11:50:18,678 INFO L131 PetriNetUnfolder]: For 26/54 co-relation queries the response was YES. [2022-11-16 11:50:18,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 336 events. 3/336 cut-off events. For 26/54 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 897 event pairs, 0 based on Foata normal form. 0/305 useless extension candidates. Maximal degree in co-relation 324. Up to 14 conditions per place. [2022-11-16 11:50:18,684 INFO L137 encePairwiseOnDemand]: 240/243 looper letters, 9 selfloop transitions, 1 changer transitions 0/222 dead transitions. [2022-11-16 11:50:18,684 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 222 transitions, 486 flow [2022-11-16 11:50:18,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:50:18,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:50:18,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 648 transitions. [2022-11-16 11:50:18,687 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2022-11-16 11:50:18,687 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 648 transitions. [2022-11-16 11:50:18,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 648 transitions. [2022-11-16 11:50:18,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:18,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 648 transitions. [2022-11-16 11:50:18,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 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) [2022-11-16 11:50:18,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 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) [2022-11-16 11:50:18,692 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 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) [2022-11-16 11:50:18,692 INFO L175 Difference]: Start difference. First operand has 229 places, 224 transitions, 470 flow. Second operand 3 states and 648 transitions. [2022-11-16 11:50:18,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 222 transitions, 486 flow [2022-11-16 11:50:18,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 222 transitions, 482 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:50:18,699 INFO L231 Difference]: Finished difference. Result has 227 places, 222 transitions, 464 flow [2022-11-16 11:50:18,699 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=464, PETRI_PLACES=227, PETRI_TRANSITIONS=222} [2022-11-16 11:50:18,702 INFO L288 CegarLoopForPetriNet]: 229 programPoint places, -2 predicate places. [2022-11-16 11:50:18,702 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 222 transitions, 464 flow [2022-11-16 11:50:18,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 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) [2022-11-16 11:50:18,703 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:18,703 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] [2022-11-16 11:50:18,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:50:18,703 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-16 11:50:18,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:18,705 INFO L85 PathProgramCache]: Analyzing trace with hash 413058339, now seen corresponding path program 1 times [2022-11-16 11:50:18,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:18,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397523632] [2022-11-16 11:50:18,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:18,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:18,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:18,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:50:18,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:18,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397523632] [2022-11-16 11:50:18,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397523632] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:18,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:18,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:50:18,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652787655] [2022-11-16 11:50:18,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:18,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:50:18,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:18,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:50:18,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:50:18,749 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 243 [2022-11-16 11:50:18,750 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 222 transitions, 464 flow. Second operand has 3 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 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) [2022-11-16 11:50:18,750 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:18,751 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 243 [2022-11-16 11:50:18,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:19,062 INFO L130 PetriNetUnfolder]: 58/1072 cut-off events. [2022-11-16 11:50:19,062 INFO L131 PetriNetUnfolder]: For 102/116 co-relation queries the response was YES. [2022-11-16 11:50:19,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1252 conditions, 1072 events. 58/1072 cut-off events. For 102/116 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 6019 event pairs, 54 based on Foata normal form. 0/948 useless extension candidates. Maximal degree in co-relation 1209. Up to 131 conditions per place. [2022-11-16 11:50:19,075 INFO L137 encePairwiseOnDemand]: 240/243 looper letters, 19 selfloop transitions, 2 changer transitions 0/221 dead transitions. [2022-11-16 11:50:19,075 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 221 transitions, 504 flow [2022-11-16 11:50:19,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:50:19,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:50:19,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 631 transitions. [2022-11-16 11:50:19,077 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8655692729766804 [2022-11-16 11:50:19,077 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 631 transitions. [2022-11-16 11:50:19,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 631 transitions. [2022-11-16 11:50:19,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:19,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 631 transitions. [2022-11-16 11:50:19,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 210.33333333333334) internal successors, (631), 3 states have internal predecessors, (631), 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) [2022-11-16 11:50:19,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 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) [2022-11-16 11:50:19,083 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 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) [2022-11-16 11:50:19,083 INFO L175 Difference]: Start difference. First operand has 227 places, 222 transitions, 464 flow. Second operand 3 states and 631 transitions. [2022-11-16 11:50:19,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 221 transitions, 504 flow [2022-11-16 11:50:19,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 221 transitions, 503 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:50:19,088 INFO L231 Difference]: Finished difference. Result has 227 places, 221 transitions, 465 flow [2022-11-16 11:50:19,089 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=465, PETRI_PLACES=227, PETRI_TRANSITIONS=221} [2022-11-16 11:50:19,090 INFO L288 CegarLoopForPetriNet]: 229 programPoint places, -2 predicate places. [2022-11-16 11:50:19,091 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 221 transitions, 465 flow [2022-11-16 11:50:19,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 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) [2022-11-16 11:50:19,091 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:19,091 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] [2022-11-16 11:50:19,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:50:19,092 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-16 11:50:19,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:19,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1284329621, now seen corresponding path program 1 times [2022-11-16 11:50:19,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:19,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203321579] [2022-11-16 11:50:19,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:19,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:19,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:19,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:50:19,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:19,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203321579] [2022-11-16 11:50:19,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203321579] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:19,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:19,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:50:19,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512840843] [2022-11-16 11:50:19,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:19,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:50:19,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:19,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:50:19,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:50:19,183 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 243 [2022-11-16 11:50:19,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 221 transitions, 465 flow. Second operand has 3 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 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) [2022-11-16 11:50:19,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:19,185 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 243 [2022-11-16 11:50:19,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:19,291 INFO L130 PetriNetUnfolder]: 2/312 cut-off events. [2022-11-16 11:50:19,291 INFO L131 PetriNetUnfolder]: For 31/89 co-relation queries the response was YES. [2022-11-16 11:50:19,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 312 events. 2/312 cut-off events. For 31/89 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 735 event pairs, 0 based on Foata normal form. 1/286 useless extension candidates. Maximal degree in co-relation 308. Up to 16 conditions per place. [2022-11-16 11:50:19,293 INFO L137 encePairwiseOnDemand]: 240/243 looper letters, 13 selfloop transitions, 2 changer transitions 0/225 dead transitions. [2022-11-16 11:50:19,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 225 transitions, 503 flow [2022-11-16 11:50:19,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:50:19,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:50:19,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 658 transitions. [2022-11-16 11:50:19,296 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9026063100137174 [2022-11-16 11:50:19,296 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 658 transitions. [2022-11-16 11:50:19,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 658 transitions. [2022-11-16 11:50:19,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:19,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 658 transitions. [2022-11-16 11:50:19,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 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) [2022-11-16 11:50:19,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 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) [2022-11-16 11:50:19,302 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 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) [2022-11-16 11:50:19,302 INFO L175 Difference]: Start difference. First operand has 227 places, 221 transitions, 465 flow. Second operand 3 states and 658 transitions. [2022-11-16 11:50:19,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 225 transitions, 503 flow [2022-11-16 11:50:19,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 225 transitions, 499 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:50:19,308 INFO L231 Difference]: Finished difference. Result has 228 places, 222 transitions, 473 flow [2022-11-16 11:50:19,308 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=473, PETRI_PLACES=228, PETRI_TRANSITIONS=222} [2022-11-16 11:50:19,309 INFO L288 CegarLoopForPetriNet]: 229 programPoint places, -1 predicate places. [2022-11-16 11:50:19,309 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 222 transitions, 473 flow [2022-11-16 11:50:19,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 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) [2022-11-16 11:50:19,309 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:19,310 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] [2022-11-16 11:50:19,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:50:19,310 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-16 11:50:19,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:19,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1578088657, now seen corresponding path program 1 times [2022-11-16 11:50:19,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:19,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087970280] [2022-11-16 11:50:19,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:19,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:19,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:19,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:50:19,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:19,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087970280] [2022-11-16 11:50:19,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087970280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:19,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:19,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:50:19,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414904628] [2022-11-16 11:50:19,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:19,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:50:19,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:19,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:50:19,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:50:19,357 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 243 [2022-11-16 11:50:19,358 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 222 transitions, 473 flow. Second operand has 3 states, 3 states have (on average 207.66666666666666) internal successors, (623), 3 states have internal predecessors, (623), 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) [2022-11-16 11:50:19,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:19,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 243 [2022-11-16 11:50:19,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:19,568 INFO L130 PetriNetUnfolder]: 30/907 cut-off events. [2022-11-16 11:50:19,568 INFO L131 PetriNetUnfolder]: For 78/88 co-relation queries the response was YES. [2022-11-16 11:50:19,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1029 conditions, 907 events. 30/907 cut-off events. For 78/88 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 4686 event pairs, 22 based on Foata normal form. 0/834 useless extension candidates. Maximal degree in co-relation 986. Up to 69 conditions per place. [2022-11-16 11:50:19,578 INFO L137 encePairwiseOnDemand]: 237/243 looper letters, 15 selfloop transitions, 2 changer transitions 0/221 dead transitions. [2022-11-16 11:50:19,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 221 transitions, 510 flow [2022-11-16 11:50:19,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:50:19,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:50:19,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 639 transitions. [2022-11-16 11:50:19,580 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8765432098765432 [2022-11-16 11:50:19,580 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 639 transitions. [2022-11-16 11:50:19,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 639 transitions. [2022-11-16 11:50:19,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:19,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 639 transitions. [2022-11-16 11:50:19,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 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) [2022-11-16 11:50:19,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 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) [2022-11-16 11:50:19,585 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 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) [2022-11-16 11:50:19,585 INFO L175 Difference]: Start difference. First operand has 228 places, 222 transitions, 473 flow. Second operand 3 states and 639 transitions. [2022-11-16 11:50:19,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 221 transitions, 510 flow [2022-11-16 11:50:19,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 221 transitions, 508 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:50:19,590 INFO L231 Difference]: Finished difference. Result has 226 places, 220 transitions, 477 flow [2022-11-16 11:50:19,591 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=477, PETRI_PLACES=226, PETRI_TRANSITIONS=220} [2022-11-16 11:50:19,591 INFO L288 CegarLoopForPetriNet]: 229 programPoint places, -3 predicate places. [2022-11-16 11:50:19,591 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 220 transitions, 477 flow [2022-11-16 11:50:19,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.66666666666666) internal successors, (623), 3 states have internal predecessors, (623), 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) [2022-11-16 11:50:19,592 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:19,592 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] [2022-11-16 11:50:19,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:50:19,592 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-16 11:50:19,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:19,593 INFO L85 PathProgramCache]: Analyzing trace with hash -918178791, now seen corresponding path program 1 times [2022-11-16 11:50:19,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:19,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232779077] [2022-11-16 11:50:19,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:19,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:19,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:20,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:50:20,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:20,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232779077] [2022-11-16 11:50:20,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232779077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:20,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:20,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:50:20,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373416153] [2022-11-16 11:50:20,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:20,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:50:20,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:20,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:50:20,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:50:20,067 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 243 [2022-11-16 11:50:20,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 220 transitions, 477 flow. Second operand has 6 states, 6 states have (on average 152.5) internal successors, (915), 6 states have internal predecessors, (915), 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) [2022-11-16 11:50:20,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:20,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 243 [2022-11-16 11:50:20,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:32,270 INFO L130 PetriNetUnfolder]: 40125/79211 cut-off events. [2022-11-16 11:50:32,270 INFO L131 PetriNetUnfolder]: For 386/386 co-relation queries the response was YES. [2022-11-16 11:50:32,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141936 conditions, 79211 events. 40125/79211 cut-off events. For 386/386 co-relation queries the response was YES. Maximal size of possible extension queue 1652. Compared 796329 event pairs, 11979 based on Foata normal form. 0/69668 useless extension candidates. Maximal degree in co-relation 141892. Up to 23722 conditions per place. [2022-11-16 11:50:32,817 INFO L137 encePairwiseOnDemand]: 199/243 looper letters, 270 selfloop transitions, 84 changer transitions 0/500 dead transitions. [2022-11-16 11:50:32,817 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 500 transitions, 1789 flow [2022-11-16 11:50:32,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:50:32,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:50:32,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1264 transitions. [2022-11-16 11:50:32,822 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8669410150891632 [2022-11-16 11:50:32,822 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1264 transitions. [2022-11-16 11:50:32,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1264 transitions. [2022-11-16 11:50:32,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:32,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1264 transitions. [2022-11-16 11:50:32,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 210.66666666666666) internal successors, (1264), 6 states have internal predecessors, (1264), 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) [2022-11-16 11:50:32,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 243.0) internal successors, (1701), 7 states have internal predecessors, (1701), 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) [2022-11-16 11:50:32,830 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 243.0) internal successors, (1701), 7 states have internal predecessors, (1701), 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) [2022-11-16 11:50:32,830 INFO L175 Difference]: Start difference. First operand has 226 places, 220 transitions, 477 flow. Second operand 6 states and 1264 transitions. [2022-11-16 11:50:32,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 500 transitions, 1789 flow [2022-11-16 11:50:32,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 500 transitions, 1789 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:50:32,844 INFO L231 Difference]: Finished difference. Result has 236 places, 312 transitions, 1109 flow [2022-11-16 11:50:32,845 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1109, PETRI_PLACES=236, PETRI_TRANSITIONS=312} [2022-11-16 11:50:32,846 INFO L288 CegarLoopForPetriNet]: 229 programPoint places, 7 predicate places. [2022-11-16 11:50:32,846 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 312 transitions, 1109 flow [2022-11-16 11:50:32,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 152.5) internal successors, (915), 6 states have internal predecessors, (915), 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) [2022-11-16 11:50:32,847 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:32,847 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] [2022-11-16 11:50:32,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:50:32,847 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-16 11:50:32,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:32,848 INFO L85 PathProgramCache]: Analyzing trace with hash -880242926, now seen corresponding path program 1 times [2022-11-16 11:50:32,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:32,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008960555] [2022-11-16 11:50:32,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:32,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:32,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:33,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:50:33,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:33,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008960555] [2022-11-16 11:50:33,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008960555] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:50:33,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609617972] [2022-11-16 11:50:33,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:33,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:50:33,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f00591b-2c7d-4b69-adbe-259c346e70a3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:50:33,147 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f00591b-2c7d-4b69-adbe-259c346e70a3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:50:33,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f00591b-2c7d-4b69-adbe-259c346e70a3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:50:33,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:33,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:50:33,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:50:33,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:50:33,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:50:33,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:50:33,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609617972] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:50:33,377 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:50:33,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 11:50:33,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230624977] [2022-11-16 11:50:33,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:50:33,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:50:33,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:33,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:50:33,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:50:33,382 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 243 [2022-11-16 11:50:33,385 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 312 transitions, 1109 flow. Second operand has 10 states, 10 states have (on average 215.3) internal successors, (2153), 10 states have internal predecessors, (2153), 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) [2022-11-16 11:50:33,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:33,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 243 [2022-11-16 11:50:33,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:33,987 INFO L130 PetriNetUnfolder]: 536/2861 cut-off events. [2022-11-16 11:50:33,987 INFO L131 PetriNetUnfolder]: For 452/531 co-relation queries the response was YES. [2022-11-16 11:50:34,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5148 conditions, 2861 events. 536/2861 cut-off events. For 452/531 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 22801 event pairs, 126 based on Foata normal form. 14/2809 useless extension candidates. Maximal degree in co-relation 5099. Up to 488 conditions per place. [2022-11-16 11:50:34,021 INFO L137 encePairwiseOnDemand]: 238/243 looper letters, 9 selfloop transitions, 7 changer transitions 0/274 dead transitions. [2022-11-16 11:50:34,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 274 transitions, 1057 flow [2022-11-16 11:50:34,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:50:34,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:50:34,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1935 transitions. [2022-11-16 11:50:34,027 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8847736625514403 [2022-11-16 11:50:34,027 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1935 transitions. [2022-11-16 11:50:34,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1935 transitions. [2022-11-16 11:50:34,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:34,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1935 transitions. [2022-11-16 11:50:34,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 215.0) internal successors, (1935), 9 states have internal predecessors, (1935), 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) [2022-11-16 11:50:34,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 243.0) internal successors, (2430), 10 states have internal predecessors, (2430), 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) [2022-11-16 11:50:34,042 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 243.0) internal successors, (2430), 10 states have internal predecessors, (2430), 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) [2022-11-16 11:50:34,043 INFO L175 Difference]: Start difference. First operand has 236 places, 312 transitions, 1109 flow. Second operand 9 states and 1935 transitions. [2022-11-16 11:50:34,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 274 transitions, 1057 flow [2022-11-16 11:50:34,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 274 transitions, 1055 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-16 11:50:34,054 INFO L231 Difference]: Finished difference. Result has 202 places, 270 transitions, 1029 flow [2022-11-16 11:50:34,054 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=1011, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1029, PETRI_PLACES=202, PETRI_TRANSITIONS=270} [2022-11-16 11:50:34,055 INFO L288 CegarLoopForPetriNet]: 229 programPoint places, -27 predicate places. [2022-11-16 11:50:34,055 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 270 transitions, 1029 flow [2022-11-16 11:50:34,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 215.3) internal successors, (2153), 10 states have internal predecessors, (2153), 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) [2022-11-16 11:50:34,057 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:34,057 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:50:34,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f00591b-2c7d-4b69-adbe-259c346e70a3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:50:34,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f00591b-2c7d-4b69-adbe-259c346e70a3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 11:50:34,264 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-16 11:50:34,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:34,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1518043039, now seen corresponding path program 1 times [2022-11-16 11:50:34,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:34,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877632921] [2022-11-16 11:50:34,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:34,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:34,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:50:34,299 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:50:34,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:50:34,331 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:50:34,331 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:50:34,331 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2022-11-16 11:50:34,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2022-11-16 11:50:34,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2022-11-16 11:50:34,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2022-11-16 11:50:34,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2022-11-16 11:50:34,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2022-11-16 11:50:34,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2022-11-16 11:50:34,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2022-11-16 11:50:34,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2022-11-16 11:50:34,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2022-11-16 11:50:34,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2022-11-16 11:50:34,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2022-11-16 11:50:34,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2022-11-16 11:50:34,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2022-11-16 11:50:34,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2022-11-16 11:50:34,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2022-11-16 11:50:34,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2022-11-16 11:50:34,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2022-11-16 11:50:34,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2022-11-16 11:50:34,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2022-11-16 11:50:34,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2022-11-16 11:50:34,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2022-11-16 11:50:34,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2022-11-16 11:50:34,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2022-11-16 11:50:34,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2022-11-16 11:50:34,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:50:34,337 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:50:34,338 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:50:34,338 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-16 11:50:34,399 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 11:50:34,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 292 places, 311 transitions, 652 flow [2022-11-16 11:50:34,519 INFO L130 PetriNetUnfolder]: 50/565 cut-off events. [2022-11-16 11:50:34,519 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-16 11:50:34,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 593 conditions, 565 events. 50/565 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2479 event pairs, 1 based on Foata normal form. 0/474 useless extension candidates. Maximal degree in co-relation 380. Up to 16 conditions per place. [2022-11-16 11:50:34,528 INFO L82 GeneralOperation]: Start removeDead. Operand has 292 places, 311 transitions, 652 flow [2022-11-16 11:50:34,535 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 292 places, 311 transitions, 652 flow [2022-11-16 11:50:34,536 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:50:34,536 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;@3b59ea7c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:50:34,537 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-11-16 11:50:34,540 INFO L130 PetriNetUnfolder]: 0/34 cut-off events. [2022-11-16 11:50:34,540 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:50:34,540 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:34,541 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] [2022-11-16 11:50:34,541 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-11-16 11:50:34,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:34,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1474050652, now seen corresponding path program 1 times [2022-11-16 11:50:34,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:34,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955120509] [2022-11-16 11:50:34,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:34,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:34,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:34,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:50:34,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:34,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955120509] [2022-11-16 11:50:34,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955120509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:34,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:34,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:50:34,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423469169] [2022-11-16 11:50:34,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:34,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:50:34,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:34,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:50:34,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:50:34,573 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 311 [2022-11-16 11:50:34,574 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 311 transitions, 652 flow. Second operand has 3 states, 3 states have (on average 270.3333333333333) internal successors, (811), 3 states have internal predecessors, (811), 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) [2022-11-16 11:50:34,574 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:34,575 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 311 [2022-11-16 11:50:34,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:34,727 INFO L130 PetriNetUnfolder]: 8/518 cut-off events. [2022-11-16 11:50:34,727 INFO L131 PetriNetUnfolder]: For 49/113 co-relation queries the response was YES. [2022-11-16 11:50:34,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 582 conditions, 518 events. 8/518 cut-off events. For 49/113 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1859 event pairs, 1 based on Foata normal form. 144/607 useless extension candidates. Maximal degree in co-relation 371. Up to 34 conditions per place. [2022-11-16 11:50:34,735 INFO L137 encePairwiseOnDemand]: 285/311 looper letters, 15 selfloop transitions, 2 changer transitions 0/286 dead transitions. [2022-11-16 11:50:34,735 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 286 transitions, 636 flow [2022-11-16 11:50:34,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:50:34,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:50:34,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 848 transitions. [2022-11-16 11:50:34,739 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9088960342979635 [2022-11-16 11:50:34,739 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 848 transitions. [2022-11-16 11:50:34,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 848 transitions. [2022-11-16 11:50:34,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:34,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 848 transitions. [2022-11-16 11:50:34,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 282.6666666666667) internal successors, (848), 3 states have internal predecessors, (848), 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) [2022-11-16 11:50:34,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 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) [2022-11-16 11:50:34,746 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 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) [2022-11-16 11:50:34,746 INFO L175 Difference]: Start difference. First operand has 292 places, 311 transitions, 652 flow. Second operand 3 states and 848 transitions. [2022-11-16 11:50:34,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 286 transitions, 636 flow [2022-11-16 11:50:34,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 286 transitions, 636 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:50:34,753 INFO L231 Difference]: Finished difference. Result has 292 places, 286 transitions, 606 flow [2022-11-16 11:50:34,754 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=606, PETRI_PLACES=292, PETRI_TRANSITIONS=286} [2022-11-16 11:50:34,754 INFO L288 CegarLoopForPetriNet]: 292 programPoint places, 0 predicate places. [2022-11-16 11:50:34,755 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 286 transitions, 606 flow [2022-11-16 11:50:34,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 270.3333333333333) internal successors, (811), 3 states have internal predecessors, (811), 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) [2022-11-16 11:50:34,755 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:34,756 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] [2022-11-16 11:50:34,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:50:34,756 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-11-16 11:50:34,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:34,757 INFO L85 PathProgramCache]: Analyzing trace with hash 776561520, now seen corresponding path program 1 times [2022-11-16 11:50:34,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:34,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122616990] [2022-11-16 11:50:34,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:34,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:34,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:50:34,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:34,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122616990] [2022-11-16 11:50:34,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122616990] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:34,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:34,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:50:34,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264774518] [2022-11-16 11:50:34,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:34,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:50:34,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:34,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:50:34,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:50:34,791 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 311 [2022-11-16 11:50:34,792 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 286 transitions, 606 flow. Second operand has 3 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 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) [2022-11-16 11:50:34,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:34,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 311 [2022-11-16 11:50:34,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:34,938 INFO L130 PetriNetUnfolder]: 8/513 cut-off events. [2022-11-16 11:50:34,938 INFO L131 PetriNetUnfolder]: For 50/100 co-relation queries the response was YES. [2022-11-16 11:50:34,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 572 conditions, 513 events. 8/513 cut-off events. For 50/100 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1846 event pairs, 1 based on Foata normal form. 0/463 useless extension candidates. Maximal degree in co-relation 525. Up to 25 conditions per place. [2022-11-16 11:50:34,946 INFO L137 encePairwiseOnDemand]: 308/311 looper letters, 11 selfloop transitions, 1 changer transitions 0/284 dead transitions. [2022-11-16 11:50:34,946 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 284 transitions, 626 flow [2022-11-16 11:50:34,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:50:34,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:50:34,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 830 transitions. [2022-11-16 11:50:34,949 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8896034297963559 [2022-11-16 11:50:34,949 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 830 transitions. [2022-11-16 11:50:34,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 830 transitions. [2022-11-16 11:50:34,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:34,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 830 transitions. [2022-11-16 11:50:34,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 276.6666666666667) internal successors, (830), 3 states have internal predecessors, (830), 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) [2022-11-16 11:50:34,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 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) [2022-11-16 11:50:34,955 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 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) [2022-11-16 11:50:34,956 INFO L175 Difference]: Start difference. First operand has 292 places, 286 transitions, 606 flow. Second operand 3 states and 830 transitions. [2022-11-16 11:50:34,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 284 transitions, 626 flow [2022-11-16 11:50:34,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 284 transitions, 622 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:50:34,963 INFO L231 Difference]: Finished difference. Result has 290 places, 284 transitions, 600 flow [2022-11-16 11:50:34,963 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=600, PETRI_PLACES=290, PETRI_TRANSITIONS=284} [2022-11-16 11:50:34,964 INFO L288 CegarLoopForPetriNet]: 292 programPoint places, -2 predicate places. [2022-11-16 11:50:34,964 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 284 transitions, 600 flow [2022-11-16 11:50:34,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 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) [2022-11-16 11:50:34,965 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:34,965 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] [2022-11-16 11:50:34,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 11:50:34,965 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-11-16 11:50:34,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:34,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1556118746, now seen corresponding path program 1 times [2022-11-16 11:50:34,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:34,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048616593] [2022-11-16 11:50:34,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:34,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:34,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:34,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:50:34,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:34,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048616593] [2022-11-16 11:50:34,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048616593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:34,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:34,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:50:34,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98904936] [2022-11-16 11:50:34,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:34,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:50:34,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:34,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:50:34,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:50:34,997 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 311 [2022-11-16 11:50:34,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 284 transitions, 600 flow. Second operand has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 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) [2022-11-16 11:50:34,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:34,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 311 [2022-11-16 11:50:34,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:36,793 INFO L130 PetriNetUnfolder]: 941/8731 cut-off events. [2022-11-16 11:50:36,794 INFO L131 PetriNetUnfolder]: For 1087/1234 co-relation queries the response was YES. [2022-11-16 11:50:36,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10678 conditions, 8731 events. 941/8731 cut-off events. For 1087/1234 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 94849 event pairs, 907 based on Foata normal form. 0/7560 useless extension candidates. Maximal degree in co-relation 10634. Up to 1510 conditions per place. [2022-11-16 11:50:36,872 INFO L137 encePairwiseOnDemand]: 308/311 looper letters, 27 selfloop transitions, 2 changer transitions 0/283 dead transitions. [2022-11-16 11:50:36,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 283 transitions, 656 flow [2022-11-16 11:50:36,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:50:36,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:50:36,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 801 transitions. [2022-11-16 11:50:36,875 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8585209003215434 [2022-11-16 11:50:36,876 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 801 transitions. [2022-11-16 11:50:36,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 801 transitions. [2022-11-16 11:50:36,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:36,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 801 transitions. [2022-11-16 11:50:36,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 267.0) internal successors, (801), 3 states have internal predecessors, (801), 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) [2022-11-16 11:50:36,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 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) [2022-11-16 11:50:36,898 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 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) [2022-11-16 11:50:36,898 INFO L175 Difference]: Start difference. First operand has 290 places, 284 transitions, 600 flow. Second operand 3 states and 801 transitions. [2022-11-16 11:50:36,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 283 transitions, 656 flow [2022-11-16 11:50:36,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 283 transitions, 655 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:50:36,904 INFO L231 Difference]: Finished difference. Result has 290 places, 283 transitions, 601 flow [2022-11-16 11:50:36,905 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=601, PETRI_PLACES=290, PETRI_TRANSITIONS=283} [2022-11-16 11:50:36,905 INFO L288 CegarLoopForPetriNet]: 292 programPoint places, -2 predicate places. [2022-11-16 11:50:36,906 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 283 transitions, 601 flow [2022-11-16 11:50:36,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 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) [2022-11-16 11:50:36,908 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:36,908 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] [2022-11-16 11:50:36,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 11:50:36,908 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-11-16 11:50:36,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:36,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1342512875, now seen corresponding path program 1 times [2022-11-16 11:50:36,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:36,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812642867] [2022-11-16 11:50:36,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:36,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:36,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:36,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:50:36,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:36,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812642867] [2022-11-16 11:50:36,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812642867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:36,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:36,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:50:36,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397750439] [2022-11-16 11:50:36,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:36,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:50:36,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:36,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:50:36,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:50:36,969 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 311 [2022-11-16 11:50:36,970 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 283 transitions, 601 flow. Second operand has 3 states, 3 states have (on average 275.0) internal successors, (825), 3 states have internal predecessors, (825), 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) [2022-11-16 11:50:36,970 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:36,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 311 [2022-11-16 11:50:36,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:37,083 INFO L130 PetriNetUnfolder]: 7/489 cut-off events. [2022-11-16 11:50:37,083 INFO L131 PetriNetUnfolder]: For 43/135 co-relation queries the response was YES. [2022-11-16 11:50:37,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 556 conditions, 489 events. 7/489 cut-off events. For 43/135 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1696 event pairs, 1 based on Foata normal form. 1/444 useless extension candidates. Maximal degree in co-relation 512. Up to 30 conditions per place. [2022-11-16 11:50:37,091 INFO L137 encePairwiseOnDemand]: 308/311 looper letters, 15 selfloop transitions, 2 changer transitions 0/287 dead transitions. [2022-11-16 11:50:37,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 287 transitions, 643 flow [2022-11-16 11:50:37,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:50:37,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:50:37,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 840 transitions. [2022-11-16 11:50:37,094 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9003215434083601 [2022-11-16 11:50:37,095 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 840 transitions. [2022-11-16 11:50:37,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 840 transitions. [2022-11-16 11:50:37,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:37,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 840 transitions. [2022-11-16 11:50:37,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 280.0) internal successors, (840), 3 states have internal predecessors, (840), 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) [2022-11-16 11:50:37,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 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) [2022-11-16 11:50:37,101 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 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) [2022-11-16 11:50:37,101 INFO L175 Difference]: Start difference. First operand has 290 places, 283 transitions, 601 flow. Second operand 3 states and 840 transitions. [2022-11-16 11:50:37,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 287 transitions, 643 flow [2022-11-16 11:50:37,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 287 transitions, 639 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:50:37,107 INFO L231 Difference]: Finished difference. Result has 291 places, 284 transitions, 609 flow [2022-11-16 11:50:37,107 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=609, PETRI_PLACES=291, PETRI_TRANSITIONS=284} [2022-11-16 11:50:37,108 INFO L288 CegarLoopForPetriNet]: 292 programPoint places, -1 predicate places. [2022-11-16 11:50:37,108 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 284 transitions, 609 flow [2022-11-16 11:50:37,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 275.0) internal successors, (825), 3 states have internal predecessors, (825), 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) [2022-11-16 11:50:37,109 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:37,109 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] [2022-11-16 11:50:37,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 11:50:37,109 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-11-16 11:50:37,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:37,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1785499533, now seen corresponding path program 1 times [2022-11-16 11:50:37,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:37,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127177098] [2022-11-16 11:50:37,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:37,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:37,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:37,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:50:37,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:37,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127177098] [2022-11-16 11:50:37,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127177098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:37,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:37,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:50:37,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098588013] [2022-11-16 11:50:37,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:37,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:50:37,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:37,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:50:37,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:50:37,155 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 311 [2022-11-16 11:50:37,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 284 transitions, 609 flow. Second operand has 3 states, 3 states have (on average 261.6666666666667) internal successors, (785), 3 states have internal predecessors, (785), 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) [2022-11-16 11:50:37,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:37,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 311 [2022-11-16 11:50:37,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:38,115 INFO L130 PetriNetUnfolder]: 381/5340 cut-off events. [2022-11-16 11:50:38,116 INFO L131 PetriNetUnfolder]: For 608/683 co-relation queries the response was YES. [2022-11-16 11:50:38,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6235 conditions, 5340 events. 381/5340 cut-off events. For 608/683 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 51658 event pairs, 310 based on Foata normal form. 0/4877 useless extension candidates. Maximal degree in co-relation 6191. Up to 623 conditions per place. [2022-11-16 11:50:38,155 INFO L137 encePairwiseOnDemand]: 302/311 looper letters, 22 selfloop transitions, 3 changer transitions 0/283 dead transitions. [2022-11-16 11:50:38,155 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 283 transitions, 669 flow [2022-11-16 11:50:38,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:50:38,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:50:38,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 811 transitions. [2022-11-16 11:50:38,157 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8692390139335477 [2022-11-16 11:50:38,158 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 811 transitions. [2022-11-16 11:50:38,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 811 transitions. [2022-11-16 11:50:38,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:38,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 811 transitions. [2022-11-16 11:50:38,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 270.3333333333333) internal successors, (811), 3 states have internal predecessors, (811), 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) [2022-11-16 11:50:38,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 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) [2022-11-16 11:50:38,163 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 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) [2022-11-16 11:50:38,163 INFO L175 Difference]: Start difference. First operand has 291 places, 284 transitions, 609 flow. Second operand 3 states and 811 transitions. [2022-11-16 11:50:38,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 283 transitions, 669 flow [2022-11-16 11:50:38,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 283 transitions, 667 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:50:38,169 INFO L231 Difference]: Finished difference. Result has 287 places, 281 transitions, 616 flow [2022-11-16 11:50:38,169 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=595, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=616, PETRI_PLACES=287, PETRI_TRANSITIONS=281} [2022-11-16 11:50:38,170 INFO L288 CegarLoopForPetriNet]: 292 programPoint places, -5 predicate places. [2022-11-16 11:50:38,170 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 281 transitions, 616 flow [2022-11-16 11:50:38,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.6666666666667) internal successors, (785), 3 states have internal predecessors, (785), 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) [2022-11-16 11:50:38,170 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:38,171 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] [2022-11-16 11:50:38,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 11:50:38,171 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-11-16 11:50:38,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:38,171 INFO L85 PathProgramCache]: Analyzing trace with hash 767248475, now seen corresponding path program 1 times [2022-11-16 11:50:38,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:38,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75945085] [2022-11-16 11:50:38,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:38,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:38,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:38,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:50:38,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:38,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75945085] [2022-11-16 11:50:38,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75945085] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:38,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:38,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:50:38,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421013344] [2022-11-16 11:50:38,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:38,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:50:38,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:38,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:50:38,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:50:38,483 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 311 [2022-11-16 11:50:38,484 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 281 transitions, 616 flow. Second operand has 6 states, 6 states have (on average 184.5) internal successors, (1107), 6 states have internal predecessors, (1107), 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) [2022-11-16 11:50:38,484 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:38,484 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 311 [2022-11-16 11:50:38,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand