./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0033fb53-5b3f-423d-a609-d2273c867fe6/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0033fb53-5b3f-423d-a609-d2273c867fe6/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0033fb53-5b3f-423d-a609-d2273c867fe6/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0033fb53-5b3f-423d-a609-d2273c867fe6/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0033fb53-5b3f-423d-a609-d2273c867fe6/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0033fb53-5b3f-423d-a609-d2273c867fe6/bin/uautomizer-uyxdKDjOR8 --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 f222d5749b9bb10b4d4c09b2c40e45ee19dec77732a8593ce917652e8ca8a43e --- 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-2329fc7 [2022-12-13 20:36:12,852 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:36:12,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:36:12,865 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:36:12,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:36:12,866 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:36:12,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:36:12,868 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:36:12,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:36:12,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:36:12,870 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:36:12,871 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:36:12,871 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:36:12,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:36:12,873 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:36:12,874 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:36:12,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:36:12,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:36:12,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:36:12,877 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:36:12,878 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:36:12,879 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:36:12,880 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:36:12,880 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:36:12,882 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:36:12,882 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:36:12,883 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:36:12,883 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:36:12,883 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:36:12,884 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:36:12,884 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:36:12,885 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:36:12,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:36:12,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:36:12,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:36:12,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:36:12,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:36:12,887 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:36:12,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:36:12,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:36:12,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:36:12,889 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0033fb53-5b3f-423d-a609-d2273c867fe6/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-12-13 20:36:12,901 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:36:12,901 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:36:12,902 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:36:12,902 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:36:12,902 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:36:12,902 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:36:12,903 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:36:12,903 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:36:12,903 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:36:12,903 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:36:12,903 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:36:12,903 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 20:36:12,903 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:36:12,903 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:36:12,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:36:12,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 20:36:12,904 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:36:12,904 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 20:36:12,904 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-13 20:36:12,904 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:36:12,904 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 20:36:12,904 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:36:12,904 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 20:36:12,904 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:36:12,904 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:36:12,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:36:12,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:36:12,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:36:12,905 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:36:12,905 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 20:36:12,905 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:36:12,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 20:36:12,905 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:36:12,905 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 20:36:12,905 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:36:12,905 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:36:12,905 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:36:12,905 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0033fb53-5b3f-423d-a609-d2273c867fe6/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0033fb53-5b3f-423d-a609-d2273c867fe6/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f222d5749b9bb10b4d4c09b2c40e45ee19dec77732a8593ce917652e8ca8a43e [2022-12-13 20:36:13,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:36:13,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:36:13,101 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:36:13,102 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:36:13,102 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:36:13,103 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0033fb53-5b3f-423d-a609-d2273c867fe6/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2022-12-13 20:36:15,647 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:36:15,831 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:36:15,831 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0033fb53-5b3f-423d-a609-d2273c867fe6/sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2022-12-13 20:36:15,839 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0033fb53-5b3f-423d-a609-d2273c867fe6/bin/uautomizer-uyxdKDjOR8/data/7b4ac26f0/874c21cb698d489c8424bb5e844f0cc5/FLAG9beaa3cb2 [2022-12-13 20:36:16,218 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0033fb53-5b3f-423d-a609-d2273c867fe6/bin/uautomizer-uyxdKDjOR8/data/7b4ac26f0/874c21cb698d489c8424bb5e844f0cc5 [2022-12-13 20:36:16,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:36:16,223 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:36:16,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:36:16,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:36:16,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:36:16,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:36:16" (1/1) ... [2022-12-13 20:36:16,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7750c402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:36:16, skipping insertion in model container [2022-12-13 20:36:16,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:36:16" (1/1) ... [2022-12-13 20:36:16,239 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:36:16,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:36:16,468 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0033fb53-5b3f-423d-a609-d2273c867fe6/sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i[30176,30189] [2022-12-13 20:36:16,485 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:36:16,494 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:36:16,516 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0033fb53-5b3f-423d-a609-d2273c867fe6/sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i[30176,30189] [2022-12-13 20:36:16,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:36:16,547 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:36:16,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:36:16 WrapperNode [2022-12-13 20:36:16,547 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:36:16,548 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:36:16,548 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:36:16,548 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:36:16,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:36:16" (1/1) ... [2022-12-13 20:36:16,563 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:36:16" (1/1) ... [2022-12-13 20:36:16,579 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 106 [2022-12-13 20:36:16,579 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:36:16,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:36:16,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:36:16,580 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:36:16,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:36:16" (1/1) ... [2022-12-13 20:36:16,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:36:16" (1/1) ... [2022-12-13 20:36:16,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:36:16" (1/1) ... [2022-12-13 20:36:16,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:36:16" (1/1) ... [2022-12-13 20:36:16,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:36:16" (1/1) ... [2022-12-13 20:36:16,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:36:16" (1/1) ... [2022-12-13 20:36:16,599 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:36:16" (1/1) ... [2022-12-13 20:36:16,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:36:16" (1/1) ... [2022-12-13 20:36:16,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:36:16,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:36:16,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:36:16,603 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:36:16,603 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:36:16" (1/1) ... [2022-12-13 20:36:16,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:36:16,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0033fb53-5b3f-423d-a609-d2273c867fe6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:36:16,625 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0033fb53-5b3f-423d-a609-d2273c867fe6/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:36:16,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0033fb53-5b3f-423d-a609-d2273c867fe6/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:36:16,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 20:36:16,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 20:36:16,651 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 20:36:16,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:36:16,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 20:36:16,651 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 20:36:16,651 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 20:36:16,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 20:36:16,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 20:36:16,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:36:16,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:36:16,652 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 20:36:16,744 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:36:16,746 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:36:17,009 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:36:17,015 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:36:17,015 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-12-13 20:36:17,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:36:17 BoogieIcfgContainer [2022-12-13 20:36:17,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:36:17,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:36:17,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:36:17,031 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:36:17,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:36:16" (1/3) ... [2022-12-13 20:36:17,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e5280e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:36:17, skipping insertion in model container [2022-12-13 20:36:17,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:36:16" (2/3) ... [2022-12-13 20:36:17,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e5280e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:36:17, skipping insertion in model container [2022-12-13 20:36:17,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:36:17" (3/3) ... [2022-12-13 20:36:17,034 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_51-mutexptr_racefree.i [2022-12-13 20:36:17,042 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 20:36:17,052 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:36:17,053 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-12-13 20:36:17,053 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 20:36:17,123 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 20:36:17,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 185 transitions, 378 flow [2022-12-13 20:36:17,230 INFO L130 PetriNetUnfolder]: 17/241 cut-off events. [2022-12-13 20:36:17,231 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 20:36:17,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 241 events. 17/241 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 709 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 130. Up to 4 conditions per place. [2022-12-13 20:36:17,237 INFO L82 GeneralOperation]: Start removeDead. Operand has 176 places, 185 transitions, 378 flow [2022-12-13 20:36:17,243 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 185 transitions, 378 flow [2022-12-13 20:36:17,247 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:36:17,258 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 176 places, 185 transitions, 378 flow [2022-12-13 20:36:17,261 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 176 places, 185 transitions, 378 flow [2022-12-13 20:36:17,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 185 transitions, 378 flow [2022-12-13 20:36:17,311 INFO L130 PetriNetUnfolder]: 17/241 cut-off events. [2022-12-13 20:36:17,312 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 20:36:17,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 241 events. 17/241 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 709 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 130. Up to 4 conditions per place. [2022-12-13 20:36:17,318 INFO L119 LiptonReduction]: Number of co-enabled transitions 8556 [2022-12-13 20:36:20,346 INFO L134 LiptonReduction]: Checked pairs total: 45070 [2022-12-13 20:36:20,347 INFO L136 LiptonReduction]: Total number of compositions: 122 [2022-12-13 20:36:20,357 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:36:20,361 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;@73c11e34, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:36:20,361 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-12-13 20:36:20,362 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 20:36:20,363 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:36:20,363 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:36:20,363 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 20:36:20,363 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2022-12-13 20:36:20,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:36:20,367 INFO L85 PathProgramCache]: Analyzing trace with hash 644, now seen corresponding path program 1 times [2022-12-13 20:36:20,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:36:20,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914617625] [2022-12-13 20:36:20,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:36:20,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:36:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:36:20,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:36:20,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:36:20,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914617625] [2022-12-13 20:36:20,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914617625] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:36:20,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:36:20,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 20:36:20,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878985207] [2022-12-13 20:36:20,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:36:20,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 20:36:20,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:36:20,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 20:36:20,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 20:36:20,472 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 307 [2022-12-13 20:36:20,474 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 82 transitions, 172 flow. Second operand has 2 states, 2 states have (on average 171.5) internal successors, (343), 2 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:20,474 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:36:20,474 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 307 [2022-12-13 20:36:20,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:36:20,585 INFO L130 PetriNetUnfolder]: 155/662 cut-off events. [2022-12-13 20:36:20,585 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 20:36:20,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1020 conditions, 662 events. 155/662 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3618 event pairs, 154 based on Foata normal form. 28/622 useless extension candidates. Maximal degree in co-relation 960. Up to 348 conditions per place. [2022-12-13 20:36:20,589 INFO L137 encePairwiseOnDemand]: 298/307 looper letters, 29 selfloop transitions, 0 changer transitions 0/73 dead transitions. [2022-12-13 20:36:20,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 73 transitions, 212 flow [2022-12-13 20:36:20,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 20:36:20,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 20:36:20,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 380 transitions. [2022-12-13 20:36:20,599 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6188925081433225 [2022-12-13 20:36:20,600 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 380 transitions. [2022-12-13 20:36:20,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 380 transitions. [2022-12-13 20:36:20,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:36:20,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 380 transitions. [2022-12-13 20:36:20,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 190.0) internal successors, (380), 2 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:20,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 307.0) internal successors, (921), 3 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:20,610 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 307.0) internal successors, (921), 3 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:20,611 INFO L175 Difference]: Start difference. First operand has 76 places, 82 transitions, 172 flow. Second operand 2 states and 380 transitions. [2022-12-13 20:36:20,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 73 transitions, 212 flow [2022-12-13 20:36:20,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 73 transitions, 212 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:36:20,616 INFO L231 Difference]: Finished difference. Result has 76 places, 73 transitions, 154 flow [2022-12-13 20:36:20,617 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=154, PETRI_PLACES=76, PETRI_TRANSITIONS=73} [2022-12-13 20:36:20,620 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 0 predicate places. [2022-12-13 20:36:20,620 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 73 transitions, 154 flow [2022-12-13 20:36:20,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 171.5) internal successors, (343), 2 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:20,620 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:36:20,621 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 20:36:20,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 20:36:20,621 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2022-12-13 20:36:20,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:36:20,622 INFO L85 PathProgramCache]: Analyzing trace with hash 638319, now seen corresponding path program 1 times [2022-12-13 20:36:20,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:36:20,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674127964] [2022-12-13 20:36:20,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:36:20,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:36:20,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:36:20,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:36:20,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:36:20,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674127964] [2022-12-13 20:36:20,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674127964] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:36:20,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:36:20,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:36:20,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809074152] [2022-12-13 20:36:20,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:36:20,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:36:20,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:36:20,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:36:20,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:36:20,716 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 307 [2022-12-13 20:36:20,717 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 73 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:20,717 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:36:20,717 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 307 [2022-12-13 20:36:20,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:36:20,827 INFO L130 PetriNetUnfolder]: 154/667 cut-off events. [2022-12-13 20:36:20,827 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 20:36:20,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1016 conditions, 667 events. 154/667 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3555 event pairs, 130 based on Foata normal form. 0/598 useless extension candidates. Maximal degree in co-relation 1012. Up to 324 conditions per place. [2022-12-13 20:36:20,831 INFO L137 encePairwiseOnDemand]: 304/307 looper letters, 42 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2022-12-13 20:36:20,832 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 88 transitions, 272 flow [2022-12-13 20:36:20,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:36:20,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:36:20,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 546 transitions. [2022-12-13 20:36:20,834 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5928338762214984 [2022-12-13 20:36:20,834 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 546 transitions. [2022-12-13 20:36:20,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 546 transitions. [2022-12-13 20:36:20,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:36:20,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 546 transitions. [2022-12-13 20:36:20,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:20,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:20,838 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:20,838 INFO L175 Difference]: Start difference. First operand has 76 places, 73 transitions, 154 flow. Second operand 3 states and 546 transitions. [2022-12-13 20:36:20,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 88 transitions, 272 flow [2022-12-13 20:36:20,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 88 transitions, 272 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:36:20,840 INFO L231 Difference]: Finished difference. Result has 79 places, 73 transitions, 162 flow [2022-12-13 20:36:20,840 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=79, PETRI_TRANSITIONS=73} [2022-12-13 20:36:20,841 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 3 predicate places. [2022-12-13 20:36:20,841 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 162 flow [2022-12-13 20:36:20,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:20,841 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:36:20,841 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 20:36:20,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 20:36:20,842 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2022-12-13 20:36:20,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:36:20,842 INFO L85 PathProgramCache]: Analyzing trace with hash 614424177, now seen corresponding path program 1 times [2022-12-13 20:36:20,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:36:20,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325860161] [2022-12-13 20:36:20,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:36:20,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:36:20,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:36:20,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:36:20,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:36:20,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325860161] [2022-12-13 20:36:20,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325860161] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:36:20,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:36:20,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:36:20,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45327510] [2022-12-13 20:36:20,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:36:20,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:36:20,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:36:20,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:36:20,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:36:20,904 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 307 [2022-12-13 20:36:20,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 73 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:20,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:36:20,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 307 [2022-12-13 20:36:20,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:36:21,013 INFO L130 PetriNetUnfolder]: 208/765 cut-off events. [2022-12-13 20:36:21,013 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2022-12-13 20:36:21,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1279 conditions, 765 events. 208/765 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3994 event pairs, 165 based on Foata normal form. 0/726 useless extension candidates. Maximal degree in co-relation 1273. Up to 447 conditions per place. [2022-12-13 20:36:21,018 INFO L137 encePairwiseOnDemand]: 301/307 looper letters, 35 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2022-12-13 20:36:21,018 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 73 transitions, 241 flow [2022-12-13 20:36:21,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:36:21,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:36:21,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 515 transitions. [2022-12-13 20:36:21,020 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5591748099891423 [2022-12-13 20:36:21,020 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 515 transitions. [2022-12-13 20:36:21,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 515 transitions. [2022-12-13 20:36:21,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:36:21,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 515 transitions. [2022-12-13 20:36:21,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:21,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:21,023 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:21,023 INFO L175 Difference]: Start difference. First operand has 79 places, 73 transitions, 162 flow. Second operand 3 states and 515 transitions. [2022-12-13 20:36:21,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 73 transitions, 241 flow [2022-12-13 20:36:21,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 73 transitions, 235 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:36:21,025 INFO L231 Difference]: Finished difference. Result has 76 places, 71 transitions, 166 flow [2022-12-13 20:36:21,025 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=76, PETRI_TRANSITIONS=71} [2022-12-13 20:36:21,026 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 0 predicate places. [2022-12-13 20:36:21,026 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 71 transitions, 166 flow [2022-12-13 20:36:21,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:21,026 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:36:21,026 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 20:36:21,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 20:36:21,026 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2022-12-13 20:36:21,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:36:21,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1867293318, now seen corresponding path program 1 times [2022-12-13 20:36:21,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:36:21,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051739125] [2022-12-13 20:36:21,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:36:21,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:36:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:36:21,046 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:36:21,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:36:21,070 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:36:21,070 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 20:36:21,071 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2022-12-13 20:36:21,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2022-12-13 20:36:21,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2022-12-13 20:36:21,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2022-12-13 20:36:21,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2022-12-13 20:36:21,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2022-12-13 20:36:21,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2022-12-13 20:36:21,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2022-12-13 20:36:21,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2022-12-13 20:36:21,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2022-12-13 20:36:21,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2022-12-13 20:36:21,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2022-12-13 20:36:21,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2022-12-13 20:36:21,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2022-12-13 20:36:21,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2022-12-13 20:36:21,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2022-12-13 20:36:21,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2022-12-13 20:36:21,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2022-12-13 20:36:21,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 20:36:21,075 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-13 20:36:21,077 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 20:36:21,077 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 20:36:21,105 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 20:36:21,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 256 transitions, 530 flow [2022-12-13 20:36:21,149 INFO L130 PetriNetUnfolder]: 31/399 cut-off events. [2022-12-13 20:36:21,149 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 20:36:21,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 413 conditions, 399 events. 31/399 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1556 event pairs, 0 based on Foata normal form. 0/338 useless extension candidates. Maximal degree in co-relation 243. Up to 8 conditions per place. [2022-12-13 20:36:21,150 INFO L82 GeneralOperation]: Start removeDead. Operand has 242 places, 256 transitions, 530 flow [2022-12-13 20:36:21,153 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 242 places, 256 transitions, 530 flow [2022-12-13 20:36:21,153 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:36:21,153 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 242 places, 256 transitions, 530 flow [2022-12-13 20:36:21,153 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 242 places, 256 transitions, 530 flow [2022-12-13 20:36:21,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 256 transitions, 530 flow [2022-12-13 20:36:21,194 INFO L130 PetriNetUnfolder]: 31/399 cut-off events. [2022-12-13 20:36:21,194 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 20:36:21,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 413 conditions, 399 events. 31/399 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1556 event pairs, 0 based on Foata normal form. 0/338 useless extension candidates. Maximal degree in co-relation 243. Up to 8 conditions per place. [2022-12-13 20:36:21,205 INFO L119 LiptonReduction]: Number of co-enabled transitions 28152 [2022-12-13 20:36:23,803 INFO L134 LiptonReduction]: Checked pairs total: 147429 [2022-12-13 20:36:23,803 INFO L136 LiptonReduction]: Total number of compositions: 144 [2022-12-13 20:36:23,805 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:36:23,806 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;@73c11e34, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:36:23,806 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2022-12-13 20:36:23,807 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-12-13 20:36:23,807 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:36:23,807 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:36:23,807 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 20:36:23,807 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-12-13 20:36:23,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:36:23,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1116, now seen corresponding path program 1 times [2022-12-13 20:36:23,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:36:23,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574950528] [2022-12-13 20:36:23,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:36:23,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:36:23,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:36:23,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:36:23,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:36:23,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574950528] [2022-12-13 20:36:23,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574950528] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:36:23,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:36:23,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 20:36:23,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441399265] [2022-12-13 20:36:23,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:36:23,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 20:36:23,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:36:23,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 20:36:23,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 20:36:23,817 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 400 [2022-12-13 20:36:23,818 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 133 transitions, 284 flow. Second operand has 2 states, 2 states have (on average 234.5) internal successors, (469), 2 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:23,818 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:36:23,818 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 400 [2022-12-13 20:36:23,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:36:25,134 INFO L130 PetriNetUnfolder]: 5778/14543 cut-off events. [2022-12-13 20:36:25,135 INFO L131 PetriNetUnfolder]: For 94/94 co-relation queries the response was YES. [2022-12-13 20:36:25,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23777 conditions, 14543 events. 5778/14543 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 135987 event pairs, 5760 based on Foata normal form. 1066/14193 useless extension candidates. Maximal degree in co-relation 15278. Up to 9135 conditions per place. [2022-12-13 20:36:25,227 INFO L137 encePairwiseOnDemand]: 385/400 looper letters, 47 selfloop transitions, 0 changer transitions 0/118 dead transitions. [2022-12-13 20:36:25,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 118 transitions, 348 flow [2022-12-13 20:36:25,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 20:36:25,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 20:36:25,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 530 transitions. [2022-12-13 20:36:25,229 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6625 [2022-12-13 20:36:25,229 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 530 transitions. [2022-12-13 20:36:25,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 530 transitions. [2022-12-13 20:36:25,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:36:25,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 530 transitions. [2022-12-13 20:36:25,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 265.0) internal successors, (530), 2 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:25,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 400.0) internal successors, (1200), 3 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:25,232 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 400.0) internal successors, (1200), 3 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:25,232 INFO L175 Difference]: Start difference. First operand has 122 places, 133 transitions, 284 flow. Second operand 2 states and 530 transitions. [2022-12-13 20:36:25,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 118 transitions, 348 flow [2022-12-13 20:36:25,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 118 transitions, 348 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:36:25,235 INFO L231 Difference]: Finished difference. Result has 122 places, 118 transitions, 254 flow [2022-12-13 20:36:25,236 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=400, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=254, PETRI_PLACES=122, PETRI_TRANSITIONS=118} [2022-12-13 20:36:25,236 INFO L288 CegarLoopForPetriNet]: 122 programPoint places, 0 predicate places. [2022-12-13 20:36:25,236 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 118 transitions, 254 flow [2022-12-13 20:36:25,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 234.5) internal successors, (469), 2 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:25,237 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:36:25,237 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 20:36:25,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 20:36:25,238 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-12-13 20:36:25,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:36:25,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1105960, now seen corresponding path program 1 times [2022-12-13 20:36:25,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:36:25,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225791855] [2022-12-13 20:36:25,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:36:25,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:36:25,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:36:25,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:36:25,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:36:25,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225791855] [2022-12-13 20:36:25,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225791855] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:36:25,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:36:25,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:36:25,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100059228] [2022-12-13 20:36:25,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:36:25,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:36:25,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:36:25,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:36:25,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:36:25,276 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 400 [2022-12-13 20:36:25,278 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 118 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 230.66666666666666) internal successors, (692), 3 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:25,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:36:25,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 400 [2022-12-13 20:36:25,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:36:26,380 INFO L130 PetriNetUnfolder]: 5777/14526 cut-off events. [2022-12-13 20:36:26,380 INFO L131 PetriNetUnfolder]: For 84/84 co-relation queries the response was YES. [2022-12-13 20:36:26,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23754 conditions, 14526 events. 5777/14526 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 136262 event pairs, 4933 based on Foata normal form. 0/13114 useless extension candidates. Maximal degree in co-relation 23749. Up to 9110 conditions per place. [2022-12-13 20:36:26,421 INFO L137 encePairwiseOnDemand]: 397/400 looper letters, 62 selfloop transitions, 2 changer transitions 0/135 dead transitions. [2022-12-13 20:36:26,421 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 135 transitions, 416 flow [2022-12-13 20:36:26,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:36:26,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:36:26,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 755 transitions. [2022-12-13 20:36:26,424 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6291666666666667 [2022-12-13 20:36:26,424 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 755 transitions. [2022-12-13 20:36:26,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 755 transitions. [2022-12-13 20:36:26,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:36:26,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 755 transitions. [2022-12-13 20:36:26,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:26,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 400.0) internal successors, (1600), 4 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:26,428 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 400.0) internal successors, (1600), 4 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:26,428 INFO L175 Difference]: Start difference. First operand has 122 places, 118 transitions, 254 flow. Second operand 3 states and 755 transitions. [2022-12-13 20:36:26,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 135 transitions, 416 flow [2022-12-13 20:36:26,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 135 transitions, 416 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:36:26,431 INFO L231 Difference]: Finished difference. Result has 125 places, 119 transitions, 266 flow [2022-12-13 20:36:26,432 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=400, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=125, PETRI_TRANSITIONS=119} [2022-12-13 20:36:26,433 INFO L288 CegarLoopForPetriNet]: 122 programPoint places, 3 predicate places. [2022-12-13 20:36:26,433 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 119 transitions, 266 flow [2022-12-13 20:36:26,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 230.66666666666666) internal successors, (692), 3 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:26,433 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:36:26,433 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 20:36:26,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 20:36:26,434 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-12-13 20:36:26,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:36:26,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1064117251, now seen corresponding path program 1 times [2022-12-13 20:36:26,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:36:26,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267469972] [2022-12-13 20:36:26,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:36:26,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:36:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:36:26,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:36:26,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:36:26,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267469972] [2022-12-13 20:36:26,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267469972] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:36:26,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:36:26,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:36:26,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041634126] [2022-12-13 20:36:26,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:36:26,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:36:26,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:36:26,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:36:26,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:36:26,471 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 400 [2022-12-13 20:36:26,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 119 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:26,472 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:36:26,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 400 [2022-12-13 20:36:26,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:36:27,823 INFO L130 PetriNetUnfolder]: 7650/17103 cut-off events. [2022-12-13 20:36:27,824 INFO L131 PetriNetUnfolder]: For 706/706 co-relation queries the response was YES. [2022-12-13 20:36:27,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29856 conditions, 17103 events. 7650/17103 cut-off events. For 706/706 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 152046 event pairs, 6745 based on Foata normal form. 0/16225 useless extension candidates. Maximal degree in co-relation 29849. Up to 12017 conditions per place. [2022-12-13 20:36:27,873 INFO L137 encePairwiseOnDemand]: 391/400 looper letters, 56 selfloop transitions, 3 changer transitions 0/120 dead transitions. [2022-12-13 20:36:27,874 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 120 transitions, 398 flow [2022-12-13 20:36:27,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:36:27,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:36:27,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 708 transitions. [2022-12-13 20:36:27,875 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.59 [2022-12-13 20:36:27,875 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 708 transitions. [2022-12-13 20:36:27,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 708 transitions. [2022-12-13 20:36:27,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:36:27,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 708 transitions. [2022-12-13 20:36:27,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:27,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 400.0) internal successors, (1600), 4 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:27,879 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 400.0) internal successors, (1600), 4 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:27,879 INFO L175 Difference]: Start difference. First operand has 125 places, 119 transitions, 266 flow. Second operand 3 states and 708 transitions. [2022-12-13 20:36:27,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 120 transitions, 398 flow [2022-12-13 20:36:27,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 120 transitions, 395 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:36:27,881 INFO L231 Difference]: Finished difference. Result has 121 places, 116 transitions, 275 flow [2022-12-13 20:36:27,881 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=400, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=121, PETRI_TRANSITIONS=116} [2022-12-13 20:36:27,882 INFO L288 CegarLoopForPetriNet]: 122 programPoint places, -1 predicate places. [2022-12-13 20:36:27,882 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 116 transitions, 275 flow [2022-12-13 20:36:27,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:27,882 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:36:27,882 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 20:36:27,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 20:36:27,882 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-12-13 20:36:27,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:36:27,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1552890653, now seen corresponding path program 1 times [2022-12-13 20:36:27,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:36:27,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652321250] [2022-12-13 20:36:27,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:36:27,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:36:27,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:36:27,895 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:36:27,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:36:27,907 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:36:27,908 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 20:36:27,908 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 24 remaining) [2022-12-13 20:36:27,908 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (22 of 24 remaining) [2022-12-13 20:36:27,908 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (21 of 24 remaining) [2022-12-13 20:36:27,908 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (20 of 24 remaining) [2022-12-13 20:36:27,908 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 24 remaining) [2022-12-13 20:36:27,908 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (18 of 24 remaining) [2022-12-13 20:36:27,908 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 24 remaining) [2022-12-13 20:36:27,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (16 of 24 remaining) [2022-12-13 20:36:27,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (15 of 24 remaining) [2022-12-13 20:36:27,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (14 of 24 remaining) [2022-12-13 20:36:27,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (13 of 24 remaining) [2022-12-13 20:36:27,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (12 of 24 remaining) [2022-12-13 20:36:27,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 24 remaining) [2022-12-13 20:36:27,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (10 of 24 remaining) [2022-12-13 20:36:27,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 24 remaining) [2022-12-13 20:36:27,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 24 remaining) [2022-12-13 20:36:27,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 24 remaining) [2022-12-13 20:36:27,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (6 of 24 remaining) [2022-12-13 20:36:27,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 24 remaining) [2022-12-13 20:36:27,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (4 of 24 remaining) [2022-12-13 20:36:27,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 24 remaining) [2022-12-13 20:36:27,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 24 remaining) [2022-12-13 20:36:27,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 24 remaining) [2022-12-13 20:36:27,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (0 of 24 remaining) [2022-12-13 20:36:27,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 20:36:27,910 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-13 20:36:27,911 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 20:36:27,911 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 20:36:27,937 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 20:36:27,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 308 places, 327 transitions, 684 flow [2022-12-13 20:36:28,004 INFO L130 PetriNetUnfolder]: 50/602 cut-off events. [2022-12-13 20:36:28,004 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 20:36:28,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 630 conditions, 602 events. 50/602 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2655 event pairs, 1 based on Foata normal form. 0/509 useless extension candidates. Maximal degree in co-relation 407. Up to 16 conditions per place. [2022-12-13 20:36:28,008 INFO L82 GeneralOperation]: Start removeDead. Operand has 308 places, 327 transitions, 684 flow [2022-12-13 20:36:28,012 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 308 places, 327 transitions, 684 flow [2022-12-13 20:36:28,012 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:36:28,012 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 308 places, 327 transitions, 684 flow [2022-12-13 20:36:28,012 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 308 places, 327 transitions, 684 flow [2022-12-13 20:36:28,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 308 places, 327 transitions, 684 flow [2022-12-13 20:36:28,118 INFO L130 PetriNetUnfolder]: 50/602 cut-off events. [2022-12-13 20:36:28,118 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 20:36:28,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 630 conditions, 602 events. 50/602 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2655 event pairs, 1 based on Foata normal form. 0/509 useless extension candidates. Maximal degree in co-relation 407. Up to 16 conditions per place. [2022-12-13 20:36:28,136 INFO L119 LiptonReduction]: Number of co-enabled transitions 57132 [2022-12-13 20:36:30,970 INFO L134 LiptonReduction]: Checked pairs total: 391478 [2022-12-13 20:36:30,970 INFO L136 LiptonReduction]: Total number of compositions: 171 [2022-12-13 20:36:30,972 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:36:30,972 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;@73c11e34, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:36:30,972 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2022-12-13 20:36:30,973 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 20:36:30,973 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:36:30,973 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:36:30,973 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 20:36:30,973 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-12-13 20:36:30,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:36:30,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1684, now seen corresponding path program 1 times [2022-12-13 20:36:30,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:36:30,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516430425] [2022-12-13 20:36:30,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:36:30,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:36:30,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:36:30,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:36:30,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:36:30,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516430425] [2022-12-13 20:36:30,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516430425] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:36:30,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:36:30,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 20:36:30,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333536982] [2022-12-13 20:36:30,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:36:30,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 20:36:30,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:36:30,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 20:36:30,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 20:36:30,981 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 498 [2022-12-13 20:36:30,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 182 transitions, 394 flow. Second operand has 2 states, 2 states have (on average 297.5) internal successors, (595), 2 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:30,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:36:30,982 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 498 [2022-12-13 20:36:30,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:36:54,709 INFO L130 PetriNetUnfolder]: 144863/281699 cut-off events. [2022-12-13 20:36:54,709 INFO L131 PetriNetUnfolder]: For 3029/3029 co-relation queries the response was YES. [2022-12-13 20:36:55,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483528 conditions, 281699 events. 144863/281699 cut-off events. For 3029/3029 co-relation queries the response was YES. Maximal size of possible extension queue 4669. Compared 3298419 event pairs, 144556 based on Foata normal form. 24170/280345 useless extension candidates. Maximal degree in co-relation 173466. Up to 199740 conditions per place. [2022-12-13 20:36:56,124 INFO L137 encePairwiseOnDemand]: 477/498 looper letters, 64 selfloop transitions, 0 changer transitions 0/161 dead transitions. [2022-12-13 20:36:56,124 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 161 transitions, 480 flow [2022-12-13 20:36:56,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 20:36:56,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 20:36:56,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 679 transitions. [2022-12-13 20:36:56,127 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6817269076305221 [2022-12-13 20:36:56,127 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 679 transitions. [2022-12-13 20:36:56,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 679 transitions. [2022-12-13 20:36:56,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:36:56,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 679 transitions. [2022-12-13 20:36:56,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 339.5) internal successors, (679), 2 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:56,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 498.0) internal successors, (1494), 3 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:56,132 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 498.0) internal successors, (1494), 3 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:56,132 INFO L175 Difference]: Start difference. First operand has 166 places, 182 transitions, 394 flow. Second operand 2 states and 679 transitions. [2022-12-13 20:36:56,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 161 transitions, 480 flow [2022-12-13 20:36:56,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 161 transitions, 480 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:36:56,137 INFO L231 Difference]: Finished difference. Result has 166 places, 161 transitions, 352 flow [2022-12-13 20:36:56,138 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=498, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=352, PETRI_PLACES=166, PETRI_TRANSITIONS=161} [2022-12-13 20:36:56,138 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 0 predicate places. [2022-12-13 20:36:56,138 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 161 transitions, 352 flow [2022-12-13 20:36:56,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 297.5) internal successors, (595), 2 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:56,139 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:36:56,139 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 20:36:56,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 20:36:56,139 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-12-13 20:36:56,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:36:56,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1670476, now seen corresponding path program 1 times [2022-12-13 20:36:56,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:36:56,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897523103] [2022-12-13 20:36:56,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:36:56,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:36:56,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:36:56,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:36:56,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:36:56,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897523103] [2022-12-13 20:36:56,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897523103] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:36:56,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:36:56,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:36:56,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67671418] [2022-12-13 20:36:56,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:36:56,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:36:56,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:36:56,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:36:56,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:36:56,171 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 498 [2022-12-13 20:36:56,172 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 161 transitions, 352 flow. Second operand has 3 states, 3 states have (on average 293.6666666666667) internal successors, (881), 3 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:56,172 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:36:56,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 498 [2022-12-13 20:36:56,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:37:17,478 INFO L130 PetriNetUnfolder]: 144862/281586 cut-off events. [2022-12-13 20:37:17,478 INFO L131 PetriNetUnfolder]: For 3015/3015 co-relation queries the response was YES. [2022-12-13 20:37:17,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483409 conditions, 281586 events. 144862/281586 cut-off events. For 3015/3015 co-relation queries the response was YES. Maximal size of possible extension queue 4691. Compared 3297162 event pairs, 131121 based on Foata normal form. 0/255689 useless extension candidates. Maximal degree in co-relation 483403. Up to 199715 conditions per place. [2022-12-13 20:37:18,906 INFO L137 encePairwiseOnDemand]: 495/498 looper letters, 79 selfloop transitions, 2 changer transitions 0/178 dead transitions. [2022-12-13 20:37:18,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 178 transitions, 548 flow [2022-12-13 20:37:18,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:37:18,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:37:18,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 961 transitions. [2022-12-13 20:37:18,909 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.643239625167336 [2022-12-13 20:37:18,909 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 961 transitions. [2022-12-13 20:37:18,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 961 transitions. [2022-12-13 20:37:18,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:37:18,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 961 transitions. [2022-12-13 20:37:18,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 320.3333333333333) internal successors, (961), 3 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:37:18,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 498.0) internal successors, (1992), 4 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:37:18,914 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 498.0) internal successors, (1992), 4 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:37:18,914 INFO L175 Difference]: Start difference. First operand has 166 places, 161 transitions, 352 flow. Second operand 3 states and 961 transitions. [2022-12-13 20:37:18,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 178 transitions, 548 flow [2022-12-13 20:37:18,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 178 transitions, 548 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:37:18,918 INFO L231 Difference]: Finished difference. Result has 169 places, 162 transitions, 364 flow [2022-12-13 20:37:18,919 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=498, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=364, PETRI_PLACES=169, PETRI_TRANSITIONS=162} [2022-12-13 20:37:18,919 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 3 predicate places. [2022-12-13 20:37:18,919 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 162 transitions, 364 flow [2022-12-13 20:37:18,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 293.6666666666667) internal successors, (881), 3 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:37:18,920 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:37:18,920 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 20:37:18,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 20:37:18,920 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-12-13 20:37:18,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:37:18,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1606432976, now seen corresponding path program 1 times [2022-12-13 20:37:18,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:37:18,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35456107] [2022-12-13 20:37:18,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:37:18,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:37:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:37:18,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:37:18,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:37:18,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35456107] [2022-12-13 20:37:18,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35456107] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:37:18,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:37:18,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:37:18,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904284388] [2022-12-13 20:37:18,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:37:18,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:37:18,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:37:18,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:37:18,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:37:18,963 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 498 [2022-12-13 20:37:18,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 162 transitions, 364 flow. Second operand has 3 states, 3 states have (on average 273.6666666666667) internal successors, (821), 3 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:37:18,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:37:18,964 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 498 [2022-12-13 20:37:18,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:37:47,476 INFO L130 PetriNetUnfolder]: 202535/352904 cut-off events. [2022-12-13 20:37:47,476 INFO L131 PetriNetUnfolder]: For 13714/13714 co-relation queries the response was YES. [2022-12-13 20:37:48,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 643913 conditions, 352904 events. 202535/352904 cut-off events. For 13714/13714 co-relation queries the response was YES. Maximal size of possible extension queue 5670. Compared 3765190 event pairs, 186730 based on Foata normal form. 0/336676 useless extension candidates. Maximal degree in co-relation 643905. Up to 278350 conditions per place. [2022-12-13 20:37:49,483 INFO L137 encePairwiseOnDemand]: 486/498 looper letters, 75 selfloop transitions, 4 changer transitions 0/163 dead transitions. [2022-12-13 20:37:49,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 163 transitions, 543 flow [2022-12-13 20:37:49,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:37:49,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:37:49,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 901 transitions. [2022-12-13 20:37:49,485 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6030789825970548 [2022-12-13 20:37:49,485 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 901 transitions. [2022-12-13 20:37:49,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 901 transitions. [2022-12-13 20:37:49,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:37:49,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 901 transitions. [2022-12-13 20:37:49,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 300.3333333333333) internal successors, (901), 3 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:37:49,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 498.0) internal successors, (1992), 4 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:37:49,490 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 498.0) internal successors, (1992), 4 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:37:49,490 INFO L175 Difference]: Start difference. First operand has 169 places, 162 transitions, 364 flow. Second operand 3 states and 901 transitions. [2022-12-13 20:37:49,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 163 transitions, 543 flow [2022-12-13 20:37:49,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 163 transitions, 540 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:37:49,499 INFO L231 Difference]: Finished difference. Result has 163 places, 158 transitions, 376 flow [2022-12-13 20:37:49,499 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=498, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=376, PETRI_PLACES=163, PETRI_TRANSITIONS=158} [2022-12-13 20:37:49,500 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, -3 predicate places. [2022-12-13 20:37:49,500 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 158 transitions, 376 flow [2022-12-13 20:37:49,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.6666666666667) internal successors, (821), 3 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:37:49,500 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:37:49,500 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:37:49,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 20:37:49,501 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-12-13 20:37:49,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:37:49,501 INFO L85 PathProgramCache]: Analyzing trace with hash -8539002, now seen corresponding path program 1 times [2022-12-13 20:37:49,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:37:49,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332226674] [2022-12-13 20:37:49,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:37:49,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:37:49,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:37:49,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:37:49,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:37:49,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332226674] [2022-12-13 20:37:49,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332226674] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:37:49,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:37:49,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 20:37:49,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901500271] [2022-12-13 20:37:49,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:37:49,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 20:37:49,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:37:49,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 20:37:49,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:37:50,197 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 498 [2022-12-13 20:37:50,198 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 158 transitions, 376 flow. Second operand has 6 states, 6 states have (on average 226.0) internal successors, (1356), 6 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:37:50,198 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:37:50,198 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 498 [2022-12-13 20:37:50,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand