./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.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_f08dcf17-5d9d-4e3b-bf88-5f3bcfcf9de1/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08dcf17-5d9d-4e3b-bf88-5f3bcfcf9de1/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_f08dcf17-5d9d-4e3b-bf88-5f3bcfcf9de1/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08dcf17-5d9d-4e3b-bf88-5f3bcfcf9de1/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08dcf17-5d9d-4e3b-bf88-5f3bcfcf9de1/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_f08dcf17-5d9d-4e3b-bf88-5f3bcfcf9de1/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 830cb16a3cbc120e059f0ed7638e33ed20360a11f425952cf536aa3d659b86fc --- 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 18:09:10,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:09:10,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:09:10,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:09:10,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:09:10,139 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:09:10,139 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:09:10,140 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:09:10,141 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:09:10,142 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:09:10,142 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:09:10,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:09:10,143 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:09:10,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:09:10,144 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:09:10,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:09:10,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:09:10,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:09:10,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:09:10,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:09:10,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:09:10,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:09:10,151 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:09:10,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:09:10,153 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:09:10,154 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:09:10,154 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:09:10,154 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:09:10,155 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:09:10,155 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:09:10,155 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:09:10,156 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:09:10,156 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:09:10,157 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:09:10,157 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:09:10,157 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:09:10,158 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:09:10,158 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:09:10,158 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:09:10,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:09:10,159 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:09:10,160 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08dcf17-5d9d-4e3b-bf88-5f3bcfcf9de1/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-12-13 18:09:10,173 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:09:10,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:09:10,173 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:09:10,173 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:09:10,174 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:09:10,174 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:09:10,174 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:09:10,175 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:09:10,175 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:09:10,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:09:10,175 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:09:10,175 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 18:09:10,175 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:09:10,175 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:09:10,175 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:09:10,175 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 18:09:10,175 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:09:10,175 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 18:09:10,176 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-13 18:09:10,176 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:09:10,176 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 18:09:10,176 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:09:10,176 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 18:09:10,176 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:09:10,176 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:09:10,176 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:09:10,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:09:10,176 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:09:10,177 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:09:10,177 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 18:09:10,177 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:09:10,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:09:10,177 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:09:10,177 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 18:09:10,177 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:09:10,177 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:09:10,177 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:09:10,177 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_f08dcf17-5d9d-4e3b-bf88-5f3bcfcf9de1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08dcf17-5d9d-4e3b-bf88-5f3bcfcf9de1/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 830cb16a3cbc120e059f0ed7638e33ed20360a11f425952cf536aa3d659b86fc [2022-12-13 18:09:10,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:09:10,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:09:10,361 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:09:10,362 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:09:10,362 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:09:10,363 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08dcf17-5d9d-4e3b-bf88-5f3bcfcf9de1/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i [2022-12-13 18:09:12,974 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:09:13,172 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:09:13,173 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08dcf17-5d9d-4e3b-bf88-5f3bcfcf9de1/sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i [2022-12-13 18:09:13,186 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08dcf17-5d9d-4e3b-bf88-5f3bcfcf9de1/bin/uautomizer-uyxdKDjOR8/data/778964d9f/d77028ea07d145a6ae39528aa50f60ae/FLAG52c1ad3ea [2022-12-13 18:09:13,197 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08dcf17-5d9d-4e3b-bf88-5f3bcfcf9de1/bin/uautomizer-uyxdKDjOR8/data/778964d9f/d77028ea07d145a6ae39528aa50f60ae [2022-12-13 18:09:13,199 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:09:13,201 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:09:13,202 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:09:13,202 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:09:13,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:09:13,205 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:09:13" (1/1) ... [2022-12-13 18:09:13,206 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c50e522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:09:13, skipping insertion in model container [2022-12-13 18:09:13,206 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:09:13" (1/1) ... [2022-12-13 18:09:13,211 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:09:13,243 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:09:13,577 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_f08dcf17-5d9d-4e3b-bf88-5f3bcfcf9de1/sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i[41322,41335] [2022-12-13 18:09:13,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:09:13,609 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:09:13,642 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_f08dcf17-5d9d-4e3b-bf88-5f3bcfcf9de1/sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i[41322,41335] [2022-12-13 18:09:13,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:09:13,693 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:09:13,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:09:13 WrapperNode [2022-12-13 18:09:13,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:09:13,694 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:09:13,695 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:09:13,695 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:09:13,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:09:13" (1/1) ... [2022-12-13 18:09:13,714 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:09:13" (1/1) ... [2022-12-13 18:09:13,734 INFO L138 Inliner]: procedures = 270, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 95 [2022-12-13 18:09:13,734 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:09:13,735 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:09:13,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:09:13,735 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:09:13,742 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:09:13" (1/1) ... [2022-12-13 18:09:13,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:09:13" (1/1) ... [2022-12-13 18:09:13,746 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:09:13" (1/1) ... [2022-12-13 18:09:13,746 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:09:13" (1/1) ... [2022-12-13 18:09:13,753 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:09:13" (1/1) ... [2022-12-13 18:09:13,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:09:13" (1/1) ... [2022-12-13 18:09:13,759 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:09:13" (1/1) ... [2022-12-13 18:09:13,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:09:13" (1/1) ... [2022-12-13 18:09:13,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:09:13,763 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:09:13,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:09:13,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:09:13,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:09:13" (1/1) ... [2022-12-13 18:09:13,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:09:13,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08dcf17-5d9d-4e3b-bf88-5f3bcfcf9de1/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:09:13,791 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08dcf17-5d9d-4e3b-bf88-5f3bcfcf9de1/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:09:13,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08dcf17-5d9d-4e3b-bf88-5f3bcfcf9de1/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:09:13,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 18:09:13,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 18:09:13,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 18:09:13,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 18:09:13,819 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 18:09:13,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:09:13,819 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 18:09:13,819 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 18:09:13,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:09:13,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:09:13,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:09:13,821 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 18:09:13,911 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:09:13,913 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:09:14,104 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:09:14,116 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:09:14,116 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-12-13 18:09:14,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:09:14 BoogieIcfgContainer [2022-12-13 18:09:14,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:09:14,121 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:09:14,121 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:09:14,124 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:09:14,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:09:13" (1/3) ... [2022-12-13 18:09:14,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@255859bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:09:14, skipping insertion in model container [2022-12-13 18:09:14,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:09:13" (2/3) ... [2022-12-13 18:09:14,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@255859bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:09:14, skipping insertion in model container [2022-12-13 18:09:14,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:09:14" (3/3) ... [2022-12-13 18:09:14,127 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_06-cond_racing1.i [2022-12-13 18:09:14,133 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 18:09:14,141 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:09:14,141 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-13 18:09:14,141 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 18:09:14,201 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 18:09:14,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 148 transitions, 304 flow [2022-12-13 18:09:14,283 INFO L130 PetriNetUnfolder]: 23/201 cut-off events. [2022-12-13 18:09:14,283 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 18:09:14,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 201 events. 23/201 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 571 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 102. Up to 6 conditions per place. [2022-12-13 18:09:14,288 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 148 transitions, 304 flow [2022-12-13 18:09:14,292 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 148 transitions, 304 flow [2022-12-13 18:09:14,295 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:09:14,303 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 148 transitions, 304 flow [2022-12-13 18:09:14,305 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 148 transitions, 304 flow [2022-12-13 18:09:14,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 148 transitions, 304 flow [2022-12-13 18:09:14,336 INFO L130 PetriNetUnfolder]: 23/201 cut-off events. [2022-12-13 18:09:14,336 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 18:09:14,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 201 events. 23/201 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 571 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 102. Up to 6 conditions per place. [2022-12-13 18:09:14,339 INFO L119 LiptonReduction]: Number of co-enabled transitions 5192 [2022-12-13 18:09:16,901 INFO L134 LiptonReduction]: Checked pairs total: 12284 [2022-12-13 18:09:16,901 INFO L136 LiptonReduction]: Total number of compositions: 120 [2022-12-13 18:09:16,912 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:09:16,917 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;@35ea2973, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:09:16,917 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-12-13 18:09:16,921 INFO L130 PetriNetUnfolder]: 1/10 cut-off events. [2022-12-13 18:09:16,921 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:09:16,921 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:09:16,922 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 18:09:16,922 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-12-13 18:09:16,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:09:16,927 INFO L85 PathProgramCache]: Analyzing trace with hash 17111705, now seen corresponding path program 1 times [2022-12-13 18:09:16,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:09:16,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662347768] [2022-12-13 18:09:16,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:09:16,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:09:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:17,120 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 18:09:17,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:09:17,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662347768] [2022-12-13 18:09:17,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662347768] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:09:17,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:09:17,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:09:17,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108371768] [2022-12-13 18:09:17,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:09:17,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:09:17,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:09:17,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:09:17,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:09:17,156 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 268 [2022-12-13 18:09:17,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 49 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 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 18:09:17,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:09:17,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 268 [2022-12-13 18:09:17,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:09:17,265 INFO L130 PetriNetUnfolder]: 145/395 cut-off events. [2022-12-13 18:09:17,266 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 18:09:17,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 710 conditions, 395 events. 145/395 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1753 event pairs, 110 based on Foata normal form. 37/382 useless extension candidates. Maximal degree in co-relation 686. Up to 293 conditions per place. [2022-12-13 18:09:17,269 INFO L137 encePairwiseOnDemand]: 255/268 looper letters, 37 selfloop transitions, 2 changer transitions 2/53 dead transitions. [2022-12-13 18:09:17,269 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 53 transitions, 196 flow [2022-12-13 18:09:17,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:09:17,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:09:17,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 448 transitions. [2022-12-13 18:09:17,280 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5572139303482587 [2022-12-13 18:09:17,280 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 448 transitions. [2022-12-13 18:09:17,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 448 transitions. [2022-12-13 18:09:17,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:09:17,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 448 transitions. [2022-12-13 18:09:17,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 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 18:09:17,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 0 states have call successors, (0), 0 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 18:09:17,289 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 0 states have call successors, (0), 0 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 18:09:17,291 INFO L175 Difference]: Start difference. First operand has 42 places, 49 transitions, 106 flow. Second operand 3 states and 448 transitions. [2022-12-13 18:09:17,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 53 transitions, 196 flow [2022-12-13 18:09:17,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 196 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:09:17,294 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 91 flow [2022-12-13 18:09:17,295 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2022-12-13 18:09:17,298 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2022-12-13 18:09:17,298 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 91 flow [2022-12-13 18:09:17,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 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 18:09:17,298 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:09:17,298 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 18:09:17,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:09:17,299 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-12-13 18:09:17,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:09:17,299 INFO L85 PathProgramCache]: Analyzing trace with hash -765570838, now seen corresponding path program 1 times [2022-12-13 18:09:17,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:09:17,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085868126] [2022-12-13 18:09:17,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:09:17,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:09:17,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:09:17,320 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:09:17,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:09:17,345 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:09:17,345 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 18:09:17,346 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-12-13 18:09:17,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2022-12-13 18:09:17,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2022-12-13 18:09:17,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2022-12-13 18:09:17,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2022-12-13 18:09:17,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2022-12-13 18:09:17,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2022-12-13 18:09:17,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2022-12-13 18:09:17,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2022-12-13 18:09:17,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2022-12-13 18:09:17,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2022-12-13 18:09:17,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 18:09:17,350 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 18:09:17,351 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 18:09:17,352 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 18:09:17,370 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 18:09:17,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 194 transitions, 406 flow [2022-12-13 18:09:17,410 INFO L130 PetriNetUnfolder]: 40/331 cut-off events. [2022-12-13 18:09:17,410 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 18:09:17,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 345 conditions, 331 events. 40/331 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1137 event pairs, 0 based on Foata normal form. 0/272 useless extension candidates. Maximal degree in co-relation 203. Up to 9 conditions per place. [2022-12-13 18:09:17,412 INFO L82 GeneralOperation]: Start removeDead. Operand has 177 places, 194 transitions, 406 flow [2022-12-13 18:09:17,413 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 177 places, 194 transitions, 406 flow [2022-12-13 18:09:17,413 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:09:17,413 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 177 places, 194 transitions, 406 flow [2022-12-13 18:09:17,414 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 177 places, 194 transitions, 406 flow [2022-12-13 18:09:17,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 194 transitions, 406 flow [2022-12-13 18:09:17,445 INFO L130 PetriNetUnfolder]: 40/331 cut-off events. [2022-12-13 18:09:17,445 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 18:09:17,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 345 conditions, 331 events. 40/331 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1137 event pairs, 0 based on Foata normal form. 0/272 useless extension candidates. Maximal degree in co-relation 203. Up to 9 conditions per place. [2022-12-13 18:09:17,452 INFO L119 LiptonReduction]: Number of co-enabled transitions 15224 [2022-12-13 18:09:19,874 INFO L134 LiptonReduction]: Checked pairs total: 48492 [2022-12-13 18:09:19,874 INFO L136 LiptonReduction]: Total number of compositions: 133 [2022-12-13 18:09:19,876 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:09:19,877 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;@35ea2973, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:09:19,877 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-12-13 18:09:19,880 INFO L130 PetriNetUnfolder]: 1/11 cut-off events. [2022-12-13 18:09:19,880 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:09:19,880 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:09:19,880 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 18:09:19,880 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-12-13 18:09:19,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:09:19,881 INFO L85 PathProgramCache]: Analyzing trace with hash 28594084, now seen corresponding path program 1 times [2022-12-13 18:09:19,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:09:19,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205821490] [2022-12-13 18:09:19,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:09:19,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:09:19,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:19,929 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 18:09:19,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:09:19,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205821490] [2022-12-13 18:09:19,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205821490] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:09:19,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:09:19,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:09:19,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247780199] [2022-12-13 18:09:19,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:09:19,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:09:19,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:09:19,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:09:19,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:09:19,940 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 327 [2022-12-13 18:09:19,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 84 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 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 18:09:19,941 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:09:19,941 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 327 [2022-12-13 18:09:19,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:09:20,409 INFO L130 PetriNetUnfolder]: 2834/5913 cut-off events. [2022-12-13 18:09:20,410 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2022-12-13 18:09:20,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10477 conditions, 5913 events. 2834/5913 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 45738 event pairs, 1250 based on Foata normal form. 694/5867 useless extension candidates. Maximal degree in co-relation 905. Up to 4467 conditions per place. [2022-12-13 18:09:20,431 INFO L137 encePairwiseOnDemand]: 308/327 looper letters, 48 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2022-12-13 18:09:20,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 81 transitions, 280 flow [2022-12-13 18:09:20,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:09:20,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:09:20,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 577 transitions. [2022-12-13 18:09:20,433 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5881753312945973 [2022-12-13 18:09:20,433 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 577 transitions. [2022-12-13 18:09:20,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 577 transitions. [2022-12-13 18:09:20,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:09:20,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 577 transitions. [2022-12-13 18:09:20,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 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 18:09:20,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 0 states have call successors, (0), 0 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 18:09:20,437 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 0 states have call successors, (0), 0 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 18:09:20,437 INFO L175 Difference]: Start difference. First operand has 72 places, 84 transitions, 186 flow. Second operand 3 states and 577 transitions. [2022-12-13 18:09:20,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 81 transitions, 280 flow [2022-12-13 18:09:20,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 81 transitions, 280 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:09:20,439 INFO L231 Difference]: Finished difference. Result has 74 places, 70 transitions, 170 flow [2022-12-13 18:09:20,439 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=74, PETRI_TRANSITIONS=70} [2022-12-13 18:09:20,440 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 2 predicate places. [2022-12-13 18:09:20,440 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 70 transitions, 170 flow [2022-12-13 18:09:20,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 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 18:09:20,441 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:09:20,441 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:09:20,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 18:09:20,441 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-12-13 18:09:20,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:09:20,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1115389577, now seen corresponding path program 1 times [2022-12-13 18:09:20,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:09:20,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047750941] [2022-12-13 18:09:20,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:09:20,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:09:20,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:20,465 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 18:09:20,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:09:20,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047750941] [2022-12-13 18:09:20,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047750941] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:09:20,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:09:20,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:09:20,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420021197] [2022-12-13 18:09:20,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:09:20,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:09:20,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:09:20,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:09:20,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:09:20,492 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 327 [2022-12-13 18:09:20,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 70 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:09:20,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:09:20,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 327 [2022-12-13 18:09:20,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:09:21,670 INFO L130 PetriNetUnfolder]: 8865/16109 cut-off events. [2022-12-13 18:09:21,670 INFO L131 PetriNetUnfolder]: For 783/783 co-relation queries the response was YES. [2022-12-13 18:09:21,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31368 conditions, 16109 events. 8865/16109 cut-off events. For 783/783 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 123270 event pairs, 3529 based on Foata normal form. 0/14667 useless extension candidates. Maximal degree in co-relation 31262. Up to 7450 conditions per place. [2022-12-13 18:09:21,725 INFO L137 encePairwiseOnDemand]: 308/327 looper letters, 81 selfloop transitions, 14 changer transitions 0/114 dead transitions. [2022-12-13 18:09:21,725 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 114 transitions, 468 flow [2022-12-13 18:09:21,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:09:21,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:09:21,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 557 transitions. [2022-12-13 18:09:21,727 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5677879714576962 [2022-12-13 18:09:21,727 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 557 transitions. [2022-12-13 18:09:21,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 557 transitions. [2022-12-13 18:09:21,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:09:21,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 557 transitions. [2022-12-13 18:09:21,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 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 18:09:21,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 0 states have call successors, (0), 0 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 18:09:21,731 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 0 states have call successors, (0), 0 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 18:09:21,731 INFO L175 Difference]: Start difference. First operand has 74 places, 70 transitions, 170 flow. Second operand 3 states and 557 transitions. [2022-12-13 18:09:21,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 114 transitions, 468 flow [2022-12-13 18:09:21,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 114 transitions, 465 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:09:21,733 INFO L231 Difference]: Finished difference. Result has 77 places, 84 transitions, 290 flow [2022-12-13 18:09:21,734 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=290, PETRI_PLACES=77, PETRI_TRANSITIONS=84} [2022-12-13 18:09:21,734 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 5 predicate places. [2022-12-13 18:09:21,734 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 84 transitions, 290 flow [2022-12-13 18:09:21,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:09:21,735 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:09:21,735 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 18:09:21,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 18:09:21,735 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-12-13 18:09:21,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:09:21,736 INFO L85 PathProgramCache]: Analyzing trace with hash -152813852, now seen corresponding path program 1 times [2022-12-13 18:09:21,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:09:21,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398555307] [2022-12-13 18:09:21,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:09:21,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:09:21,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:09:21,748 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:09:21,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:09:21,760 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:09:21,760 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 18:09:21,760 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-12-13 18:09:21,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2022-12-13 18:09:21,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2022-12-13 18:09:21,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2022-12-13 18:09:21,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2022-12-13 18:09:21,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2022-12-13 18:09:21,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2022-12-13 18:09:21,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2022-12-13 18:09:21,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2022-12-13 18:09:21,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2022-12-13 18:09:21,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2022-12-13 18:09:21,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2022-12-13 18:09:21,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2022-12-13 18:09:21,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2022-12-13 18:09:21,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2022-12-13 18:09:21,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 18:09:21,762 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-13 18:09:21,763 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 18:09:21,763 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 18:09:21,783 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 18:09:21,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 240 transitions, 510 flow [2022-12-13 18:09:21,855 INFO L130 PetriNetUnfolder]: 62/506 cut-off events. [2022-12-13 18:09:21,856 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 18:09:21,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 534 conditions, 506 events. 62/506 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1926 event pairs, 1 based on Foata normal form. 0/416 useless extension candidates. Maximal degree in co-relation 339. Up to 16 conditions per place. [2022-12-13 18:09:21,859 INFO L82 GeneralOperation]: Start removeDead. Operand has 218 places, 240 transitions, 510 flow [2022-12-13 18:09:21,863 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 218 places, 240 transitions, 510 flow [2022-12-13 18:09:21,863 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:09:21,863 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 218 places, 240 transitions, 510 flow [2022-12-13 18:09:21,863 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 218 places, 240 transitions, 510 flow [2022-12-13 18:09:21,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 240 transitions, 510 flow [2022-12-13 18:09:21,922 INFO L130 PetriNetUnfolder]: 62/506 cut-off events. [2022-12-13 18:09:21,922 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 18:09:21,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 534 conditions, 506 events. 62/506 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1926 event pairs, 1 based on Foata normal form. 0/416 useless extension candidates. Maximal degree in co-relation 339. Up to 16 conditions per place. [2022-12-13 18:09:21,937 INFO L119 LiptonReduction]: Number of co-enabled transitions 29040 [2022-12-13 18:09:24,673 INFO L134 LiptonReduction]: Checked pairs total: 102110 [2022-12-13 18:09:24,673 INFO L136 LiptonReduction]: Total number of compositions: 155 [2022-12-13 18:09:24,674 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:09:24,675 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;@35ea2973, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:09:24,675 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-12-13 18:09:24,676 INFO L130 PetriNetUnfolder]: 1/11 cut-off events. [2022-12-13 18:09:24,676 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:09:24,676 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:09:24,677 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 18:09:24,677 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 18:09:24,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:09:24,677 INFO L85 PathProgramCache]: Analyzing trace with hash 42168914, now seen corresponding path program 1 times [2022-12-13 18:09:24,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:09:24,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668520606] [2022-12-13 18:09:24,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:09:24,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:09:24,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:24,705 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 18:09:24,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:09:24,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668520606] [2022-12-13 18:09:24,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668520606] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:09:24,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:09:24,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:09:24,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511010275] [2022-12-13 18:09:24,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:09:24,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:09:24,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:09:24,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:09:24,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:09:24,715 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 395 [2022-12-13 18:09:24,717 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 115 transitions, 260 flow. Second operand has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 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 18:09:24,717 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:09:24,717 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 395 [2022-12-13 18:09:24,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:09:29,694 INFO L130 PetriNetUnfolder]: 48690/81017 cut-off events. [2022-12-13 18:09:29,694 INFO L131 PetriNetUnfolder]: For 1393/1393 co-relation queries the response was YES. [2022-12-13 18:09:29,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149461 conditions, 81017 events. 48690/81017 cut-off events. For 1393/1393 co-relation queries the response was YES. Maximal size of possible extension queue 2010. Compared 729127 event pairs, 45411 based on Foata normal form. 12780/85370 useless extension candidates. Maximal degree in co-relation 71496. Up to 67428 conditions per place. [2022-12-13 18:09:30,078 INFO L137 encePairwiseOnDemand]: 370/395 looper letters, 60 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2022-12-13 18:09:30,079 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 106 transitions, 366 flow [2022-12-13 18:09:30,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:09:30,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:09:30,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 709 transitions. [2022-12-13 18:09:30,081 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5983122362869199 [2022-12-13 18:09:30,081 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 709 transitions. [2022-12-13 18:09:30,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 709 transitions. [2022-12-13 18:09:30,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:09:30,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 709 transitions. [2022-12-13 18:09:30,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 236.33333333333334) internal successors, (709), 3 states have internal predecessors, (709), 0 states have call successors, (0), 0 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 18:09:30,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 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 18:09:30,085 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 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 18:09:30,085 INFO L175 Difference]: Start difference. First operand has 98 places, 115 transitions, 260 flow. Second operand 3 states and 709 transitions. [2022-12-13 18:09:30,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 106 transitions, 366 flow [2022-12-13 18:09:30,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 106 transitions, 366 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:09:30,091 INFO L231 Difference]: Finished difference. Result has 100 places, 95 transitions, 232 flow [2022-12-13 18:09:30,091 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=100, PETRI_TRANSITIONS=95} [2022-12-13 18:09:30,092 INFO L288 CegarLoopForPetriNet]: 98 programPoint places, 2 predicate places. [2022-12-13 18:09:30,092 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 95 transitions, 232 flow [2022-12-13 18:09:30,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 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 18:09:30,092 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:09:30,092 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:09:30,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 18:09:30,093 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 18:09:30,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:09:30,093 INFO L85 PathProgramCache]: Analyzing trace with hash 281447067, now seen corresponding path program 1 times [2022-12-13 18:09:30,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:09:30,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457453687] [2022-12-13 18:09:30,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:09:30,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:09:30,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:30,125 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 18:09:30,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:09:30,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457453687] [2022-12-13 18:09:30,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457453687] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:09:30,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:09:30,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:09:30,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662970816] [2022-12-13 18:09:30,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:09:30,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:09:30,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:09:30,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:09:30,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:09:30,158 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 395 [2022-12-13 18:09:30,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 95 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 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 18:09:30,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:09:30,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 395 [2022-12-13 18:09:30,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:09:54,880 INFO L130 PetriNetUnfolder]: 279781/422405 cut-off events. [2022-12-13 18:09:54,880 INFO L131 PetriNetUnfolder]: For 19584/19584 co-relation queries the response was YES. [2022-12-13 18:09:55,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 837287 conditions, 422405 events. 279781/422405 cut-off events. For 19584/19584 co-relation queries the response was YES. Maximal size of possible extension queue 7605. Compared 3762632 event pairs, 115253 based on Foata normal form. 0/383288 useless extension candidates. Maximal degree in co-relation 837175. Up to 204411 conditions per place. [2022-12-13 18:09:56,936 INFO L137 encePairwiseOnDemand]: 368/395 looper letters, 109 selfloop transitions, 20 changer transitions 0/155 dead transitions. [2022-12-13 18:09:56,937 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 155 transitions, 640 flow [2022-12-13 18:09:56,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:09:56,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:09:56,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 683 transitions. [2022-12-13 18:09:56,939 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5763713080168776 [2022-12-13 18:09:56,939 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 683 transitions. [2022-12-13 18:09:56,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 683 transitions. [2022-12-13 18:09:56,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:09:56,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 683 transitions. [2022-12-13 18:09:56,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 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 18:09:56,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 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 18:09:56,942 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 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 18:09:56,943 INFO L175 Difference]: Start difference. First operand has 100 places, 95 transitions, 232 flow. Second operand 3 states and 683 transitions. [2022-12-13 18:09:56,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 155 transitions, 640 flow [2022-12-13 18:09:56,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 155 transitions, 637 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:09:56,959 INFO L231 Difference]: Finished difference. Result has 103 places, 115 transitions, 404 flow [2022-12-13 18:09:56,959 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=404, PETRI_PLACES=103, PETRI_TRANSITIONS=115} [2022-12-13 18:09:56,960 INFO L288 CegarLoopForPetriNet]: 98 programPoint places, 5 predicate places. [2022-12-13 18:09:56,960 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 115 transitions, 404 flow [2022-12-13 18:09:56,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 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 18:09:56,960 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:09:56,960 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:09:56,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 18:09:56,960 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 18:09:56,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:09:56,961 INFO L85 PathProgramCache]: Analyzing trace with hash -517510658, now seen corresponding path program 1 times [2022-12-13 18:09:56,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:09:56,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84099854] [2022-12-13 18:09:56,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:09:56,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:09:56,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:56,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:09:56,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:09:56,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84099854] [2022-12-13 18:09:56,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84099854] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:09:56,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:09:56,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:09:56,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512515485] [2022-12-13 18:09:56,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:09:56,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:09:56,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:09:56,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:09:56,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:09:57,021 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 395 [2022-12-13 18:09:57,022 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 115 transitions, 404 flow. Second operand has 3 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 0 states have call successors, (0), 0 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 18:09:57,022 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:09:57,022 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 395 [2022-12-13 18:09:57,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:10:00,614 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1152] L939-16-->L939-17: Formula: (= |v_#race~global~0_10| 0) InVars {} OutVars{#race~global~0=|v_#race~global~0_10|} AuxVars[] AssignedVars[#race~global~0][89], [Black: 223#(= |ULTIMATE.start_main_~i~1#1| 0), 59#L939-4true, Black: 226#true, t_funThread1of3ForFork0InUse, 79#L949-4true, t_funThread2of3ForFork0InUse, 135#L939-4true, t_funThread3of3ForFork0InUse, 149#L939-17true, 228#(= |#race~global~0| 0), 232#true]) [2022-12-13 18:10:00,614 INFO L383 tUnfolder$Statistics]: this new event has 38 ancestors and is cut-off event [2022-12-13 18:10:00,614 INFO L386 tUnfolder$Statistics]: existing Event has 38 ancestors and is cut-off event [2022-12-13 18:10:00,614 INFO L386 tUnfolder$Statistics]: existing Event has 38 ancestors and is cut-off event [2022-12-13 18:10:00,614 INFO L386 tUnfolder$Statistics]: existing Event has 38 ancestors and is cut-off event [2022-12-13 18:10:01,277 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1229] L949-4-->L949-6: Formula: (= |v_#race~global~0_64| 0) InVars {#race~global~0=|v_#race~global~0_64|} OutVars{#race~global~0=|v_#race~global~0_64|} AuxVars[] AssignedVars[][22], [111#L949-6true, Black: 223#(= |ULTIMATE.start_main_~i~1#1| 0), 59#L939-4true, Black: 226#true, t_funThread1of3ForFork0InUse, 88#L939-16true, t_funThread2of3ForFork0InUse, 135#L939-4true, t_funThread3of3ForFork0InUse, 228#(= |#race~global~0| 0), 232#true]) [2022-12-13 18:10:01,277 INFO L383 tUnfolder$Statistics]: this new event has 38 ancestors and is not cut-off event [2022-12-13 18:10:01,278 INFO L386 tUnfolder$Statistics]: existing Event has 38 ancestors and is not cut-off event [2022-12-13 18:10:01,278 INFO L386 tUnfolder$Statistics]: existing Event has 38 ancestors and is not cut-off event [2022-12-13 18:10:01,278 INFO L386 tUnfolder$Statistics]: existing Event has 38 ancestors and is not cut-off event [2022-12-13 18:10:01,278 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1152] L939-16-->L939-17: Formula: (= |v_#race~global~0_10| 0) InVars {} OutVars{#race~global~0=|v_#race~global~0_10|} AuxVars[] AssignedVars[#race~global~0][89], [111#L949-6true, Black: 223#(= |ULTIMATE.start_main_~i~1#1| 0), 59#L939-4true, Black: 226#true, t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0InUse, 135#L939-4true, t_funThread3of3ForFork0InUse, 149#L939-17true, 228#(= |#race~global~0| 0), 232#true]) [2022-12-13 18:10:01,278 INFO L383 tUnfolder$Statistics]: this new event has 39 ancestors and is cut-off event [2022-12-13 18:10:01,278 INFO L386 tUnfolder$Statistics]: existing Event has 39 ancestors and is cut-off event [2022-12-13 18:10:01,278 INFO L386 tUnfolder$Statistics]: existing Event has 39 ancestors and is cut-off event [2022-12-13 18:10:01,278 INFO L386 tUnfolder$Statistics]: existing Event has 39 ancestors and is cut-off event [2022-12-13 18:10:01,809 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1152] L939-16-->L939-17: Formula: (= |v_#race~global~0_10| 0) InVars {} OutVars{#race~global~0=|v_#race~global~0_10|} AuxVars[] AssignedVars[#race~global~0][89], [17#L949-8true, Black: 223#(= |ULTIMATE.start_main_~i~1#1| 0), 59#L939-4true, Black: 226#true, t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0InUse, 135#L939-4true, 149#L939-17true, t_funThread3of3ForFork0InUse, 228#(= |#race~global~0| 0), 232#true]) [2022-12-13 18:10:01,809 INFO L383 tUnfolder$Statistics]: this new event has 40 ancestors and is cut-off event [2022-12-13 18:10:01,809 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 18:10:01,809 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 18:10:01,809 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 18:10:01,839 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1218] L939-6-->L939-8: Formula: (= |v_t_funThread2of3ForFork0_#t~nondet34_13| |v_#race~global~0_58|) InVars {} OutVars{t_funThread2of3ForFork0_#t~nondet34=|v_t_funThread2of3ForFork0_#t~nondet34_13|, #race~global~0=|v_#race~global~0_58|} AuxVars[] AssignedVars[t_funThread2of3ForFork0_#t~nondet34, #race~global~0][50], [Black: 223#(= |ULTIMATE.start_main_~i~1#1| 0), t_funThread1of3ForFork0InUse, Black: 228#(= |#race~global~0| 0), 88#L939-16true, 79#L949-4true, t_funThread2of3ForFork0InUse, 135#L939-4true, t_funThread3of3ForFork0InUse, 226#true, 196#L939-8true, 232#true]) [2022-12-13 18:10:01,839 INFO L383 tUnfolder$Statistics]: this new event has 40 ancestors and is cut-off event [2022-12-13 18:10:01,839 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 18:10:01,839 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 18:10:01,839 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 18:10:02,404 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1152] L939-16-->L939-17: Formula: (= |v_#race~global~0_10| 0) InVars {} OutVars{#race~global~0=|v_#race~global~0_10|} AuxVars[] AssignedVars[#race~global~0][89], [Black: 223#(= |ULTIMATE.start_main_~i~1#1| 0), 59#L939-4true, Black: 226#true, t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0InUse, 135#L939-4true, 149#L939-17true, 129#L951true, t_funThread3of3ForFork0InUse, 228#(= |#race~global~0| 0), 232#true]) [2022-12-13 18:10:02,404 INFO L383 tUnfolder$Statistics]: this new event has 41 ancestors and is cut-off event [2022-12-13 18:10:02,404 INFO L386 tUnfolder$Statistics]: existing Event has 41 ancestors and is cut-off event [2022-12-13 18:10:02,404 INFO L386 tUnfolder$Statistics]: existing Event has 41 ancestors and is cut-off event [2022-12-13 18:10:02,404 INFO L386 tUnfolder$Statistics]: existing Event has 41 ancestors and is cut-off event [2022-12-13 18:10:02,430 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1218] L939-6-->L939-8: Formula: (= |v_t_funThread2of3ForFork0_#t~nondet34_13| |v_#race~global~0_58|) InVars {} OutVars{t_funThread2of3ForFork0_#t~nondet34=|v_t_funThread2of3ForFork0_#t~nondet34_13|, #race~global~0=|v_#race~global~0_58|} AuxVars[] AssignedVars[t_funThread2of3ForFork0_#t~nondet34, #race~global~0][50], [111#L949-6true, Black: 223#(= |ULTIMATE.start_main_~i~1#1| 0), t_funThread1of3ForFork0InUse, Black: 228#(= |#race~global~0| 0), 88#L939-16true, t_funThread2of3ForFork0InUse, 135#L939-4true, t_funThread3of3ForFork0InUse, 226#true, 196#L939-8true, 232#true]) [2022-12-13 18:10:02,430 INFO L383 tUnfolder$Statistics]: this new event has 41 ancestors and is cut-off event [2022-12-13 18:10:02,430 INFO L386 tUnfolder$Statistics]: existing Event has 41 ancestors and is cut-off event [2022-12-13 18:10:02,431 INFO L386 tUnfolder$Statistics]: existing Event has 41 ancestors and is cut-off event [2022-12-13 18:10:02,431 INFO L386 tUnfolder$Statistics]: existing Event has 41 ancestors and is cut-off event [2022-12-13 18:10:03,046 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1218] L939-6-->L939-8: Formula: (= |v_t_funThread2of3ForFork0_#t~nondet34_13| |v_#race~global~0_58|) InVars {} OutVars{t_funThread2of3ForFork0_#t~nondet34=|v_t_funThread2of3ForFork0_#t~nondet34_13|, #race~global~0=|v_#race~global~0_58|} AuxVars[] AssignedVars[t_funThread2of3ForFork0_#t~nondet34, #race~global~0][50], [Black: 223#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 228#(= |#race~global~0| 0), t_funThread1of3ForFork0InUse, 88#L939-16true, 80#L952-13true, t_funThread2of3ForFork0InUse, 135#L939-4true, t_funThread3of3ForFork0InUse, 226#true, 196#L939-8true, 232#true]) [2022-12-13 18:10:03,046 INFO L383 tUnfolder$Statistics]: this new event has 44 ancestors and is cut-off event [2022-12-13 18:10:03,046 INFO L386 tUnfolder$Statistics]: existing Event has 39 ancestors and is cut-off event [2022-12-13 18:10:03,046 INFO L386 tUnfolder$Statistics]: existing Event has 39 ancestors and is cut-off event [2022-12-13 18:10:03,046 INFO L386 tUnfolder$Statistics]: existing Event has 39 ancestors and is cut-off event [2022-12-13 18:10:03,046 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1152] L939-16-->L939-17: Formula: (= |v_#race~global~0_10| 0) InVars {} OutVars{#race~global~0=|v_#race~global~0_10|} AuxVars[] AssignedVars[#race~global~0][89], [Black: 223#(= |ULTIMATE.start_main_~i~1#1| 0), 59#L939-4true, Black: 226#true, t_funThread1of3ForFork0InUse, 80#L952-13true, t_funThread2of3ForFork0InUse, 135#L939-4true, 149#L939-17true, t_funThread3of3ForFork0InUse, 228#(= |#race~global~0| 0), 232#true]) [2022-12-13 18:10:03,047 INFO L383 tUnfolder$Statistics]: this new event has 42 ancestors and is cut-off event [2022-12-13 18:10:03,047 INFO L386 tUnfolder$Statistics]: existing Event has 37 ancestors and is cut-off event [2022-12-13 18:10:03,047 INFO L386 tUnfolder$Statistics]: existing Event has 37 ancestors and is cut-off event [2022-12-13 18:10:03,047 INFO L386 tUnfolder$Statistics]: existing Event has 37 ancestors and is cut-off event [2022-12-13 18:10:03,059 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1218] L939-6-->L939-8: Formula: (= |v_t_funThread2of3ForFork0_#t~nondet34_13| |v_#race~global~0_58|) InVars {} OutVars{t_funThread2of3ForFork0_#t~nondet34=|v_t_funThread2of3ForFork0_#t~nondet34_13|, #race~global~0=|v_#race~global~0_58|} AuxVars[] AssignedVars[t_funThread2of3ForFork0_#t~nondet34, #race~global~0][50], [17#L949-8true, Black: 223#(= |ULTIMATE.start_main_~i~1#1| 0), t_funThread1of3ForFork0InUse, Black: 228#(= |#race~global~0| 0), 88#L939-16true, t_funThread2of3ForFork0InUse, 135#L939-4true, t_funThread3of3ForFork0InUse, 226#true, 196#L939-8true, 232#true]) [2022-12-13 18:10:03,059 INFO L383 tUnfolder$Statistics]: this new event has 42 ancestors and is cut-off event [2022-12-13 18:10:03,059 INFO L386 tUnfolder$Statistics]: existing Event has 42 ancestors and is cut-off event [2022-12-13 18:10:03,059 INFO L386 tUnfolder$Statistics]: existing Event has 42 ancestors and is cut-off event [2022-12-13 18:10:03,059 INFO L386 tUnfolder$Statistics]: existing Event has 42 ancestors and is cut-off event [2022-12-13 18:10:03,871 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1218] L939-6-->L939-8: Formula: (= |v_t_funThread2of3ForFork0_#t~nondet34_13| |v_#race~global~0_58|) InVars {} OutVars{t_funThread2of3ForFork0_#t~nondet34=|v_t_funThread2of3ForFork0_#t~nondet34_13|, #race~global~0=|v_#race~global~0_58|} AuxVars[] AssignedVars[t_funThread2of3ForFork0_#t~nondet34, #race~global~0][50], [120#L952-8true, Black: 223#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 228#(= |#race~global~0| 0), t_funThread1of3ForFork0InUse, 88#L939-16true, t_funThread2of3ForFork0InUse, 135#L939-4true, t_funThread3of3ForFork0InUse, 226#true, 196#L939-8true, 232#true]) [2022-12-13 18:10:03,871 INFO L383 tUnfolder$Statistics]: this new event has 45 ancestors and is cut-off event [2022-12-13 18:10:03,871 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 18:10:03,871 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 18:10:03,871 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 18:10:03,871 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1152] L939-16-->L939-17: Formula: (= |v_#race~global~0_10| 0) InVars {} OutVars{#race~global~0=|v_#race~global~0_10|} AuxVars[] AssignedVars[#race~global~0][89], [120#L952-8true, Black: 223#(= |ULTIMATE.start_main_~i~1#1| 0), 59#L939-4true, Black: 226#true, t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0InUse, 135#L939-4true, 149#L939-17true, t_funThread3of3ForFork0InUse, 228#(= |#race~global~0| 0), 232#true]) [2022-12-13 18:10:03,871 INFO L383 tUnfolder$Statistics]: this new event has 43 ancestors and is cut-off event [2022-12-13 18:10:03,872 INFO L386 tUnfolder$Statistics]: existing Event has 38 ancestors and is cut-off event [2022-12-13 18:10:03,872 INFO L386 tUnfolder$Statistics]: existing Event has 38 ancestors and is cut-off event [2022-12-13 18:10:03,872 INFO L386 tUnfolder$Statistics]: existing Event has 38 ancestors and is cut-off event [2022-12-13 18:10:03,875 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1218] L939-6-->L939-8: Formula: (= |v_t_funThread2of3ForFork0_#t~nondet34_13| |v_#race~global~0_58|) InVars {} OutVars{t_funThread2of3ForFork0_#t~nondet34=|v_t_funThread2of3ForFork0_#t~nondet34_13|, #race~global~0=|v_#race~global~0_58|} AuxVars[] AssignedVars[t_funThread2of3ForFork0_#t~nondet34, #race~global~0][50], [Black: 223#(= |ULTIMATE.start_main_~i~1#1| 0), t_funThread1of3ForFork0InUse, 88#L939-16true, Black: 228#(= |#race~global~0| 0), t_funThread2of3ForFork0InUse, 135#L939-4true, 98#ULTIMATE.startEXITtrue, t_funThread3of3ForFork0InUse, 226#true, 196#L939-8true, 232#true]) [2022-12-13 18:10:03,875 INFO L383 tUnfolder$Statistics]: this new event has 45 ancestors and is cut-off event [2022-12-13 18:10:03,875 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 18:10:03,875 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 18:10:03,875 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 18:10:03,875 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1152] L939-16-->L939-17: Formula: (= |v_#race~global~0_10| 0) InVars {} OutVars{#race~global~0=|v_#race~global~0_10|} AuxVars[] AssignedVars[#race~global~0][89], [Black: 223#(= |ULTIMATE.start_main_~i~1#1| 0), 59#L939-4true, Black: 226#true, t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0InUse, 135#L939-4true, 98#ULTIMATE.startEXITtrue, t_funThread3of3ForFork0InUse, 149#L939-17true, 228#(= |#race~global~0| 0), 232#true]) [2022-12-13 18:10:03,876 INFO L383 tUnfolder$Statistics]: this new event has 43 ancestors and is cut-off event [2022-12-13 18:10:03,876 INFO L386 tUnfolder$Statistics]: existing Event has 38 ancestors and is cut-off event [2022-12-13 18:10:03,876 INFO L386 tUnfolder$Statistics]: existing Event has 38 ancestors and is cut-off event [2022-12-13 18:10:03,876 INFO L386 tUnfolder$Statistics]: existing Event has 38 ancestors and is cut-off event [2022-12-13 18:10:03,895 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1218] L939-6-->L939-8: Formula: (= |v_t_funThread2of3ForFork0_#t~nondet34_13| |v_#race~global~0_58|) InVars {} OutVars{t_funThread2of3ForFork0_#t~nondet34=|v_t_funThread2of3ForFork0_#t~nondet34_13|, #race~global~0=|v_#race~global~0_58|} AuxVars[] AssignedVars[t_funThread2of3ForFork0_#t~nondet34, #race~global~0][50], [Black: 223#(= |ULTIMATE.start_main_~i~1#1| 0), 88#L939-16true, t_funThread1of3ForFork0InUse, Black: 228#(= |#race~global~0| 0), t_funThread2of3ForFork0InUse, 135#L939-4true, 129#L951true, t_funThread3of3ForFork0InUse, 226#true, 196#L939-8true, 232#true]) [2022-12-13 18:10:03,895 INFO L383 tUnfolder$Statistics]: this new event has 43 ancestors and is cut-off event [2022-12-13 18:10:03,895 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is cut-off event [2022-12-13 18:10:03,896 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is cut-off event [2022-12-13 18:10:03,896 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is cut-off event [2022-12-13 18:10:20,752 INFO L130 PetriNetUnfolder]: 245037/379033 cut-off events. [2022-12-13 18:10:20,752 INFO L131 PetriNetUnfolder]: For 200774/206301 co-relation queries the response was YES. [2022-12-13 18:10:21,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 925532 conditions, 379033 events. 245037/379033 cut-off events. For 200774/206301 co-relation queries the response was YES. Maximal size of possible extension queue 8188. Compared 3545673 event pairs, 167731 based on Foata normal form. 162/337530 useless extension candidates. Maximal degree in co-relation 251329. Up to 317013 conditions per place. [2022-12-13 18:10:22,662 INFO L137 encePairwiseOnDemand]: 383/395 looper letters, 102 selfloop transitions, 21 changer transitions 0/167 dead transitions. [2022-12-13 18:10:22,662 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 167 transitions, 840 flow [2022-12-13 18:10:22,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:10:22,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:10:22,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 677 transitions. [2022-12-13 18:10:22,664 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5713080168776371 [2022-12-13 18:10:22,664 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 677 transitions. [2022-12-13 18:10:22,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 677 transitions. [2022-12-13 18:10:22,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:10:22,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 677 transitions. [2022-12-13 18:10:22,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 0 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 18:10:22,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 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 18:10:22,669 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 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 18:10:22,669 INFO L175 Difference]: Start difference. First operand has 103 places, 115 transitions, 404 flow. Second operand 3 states and 677 transitions. [2022-12-13 18:10:22,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 167 transitions, 840 flow [2022-12-13 18:10:22,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 167 transitions, 780 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:10:22,870 INFO L231 Difference]: Finished difference. Result has 104 places, 134 transitions, 541 flow [2022-12-13 18:10:22,871 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=541, PETRI_PLACES=104, PETRI_TRANSITIONS=134} [2022-12-13 18:10:22,871 INFO L288 CegarLoopForPetriNet]: 98 programPoint places, 6 predicate places. [2022-12-13 18:10:22,871 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 134 transitions, 541 flow [2022-12-13 18:10:22,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 0 states have call successors, (0), 0 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 18:10:22,872 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:10:22,872 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-12-13 18:10:22,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 18:10:22,872 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 18:10:22,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:10:22,872 INFO L85 PathProgramCache]: Analyzing trace with hash 752590674, now seen corresponding path program 1 times [2022-12-13 18:10:22,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:10:22,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113031697] [2022-12-13 18:10:22,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:10:22,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:10:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:10:22,886 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:10:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:10:22,898 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:10:22,898 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 18:10:22,898 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-12-13 18:10:22,898 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2022-12-13 18:10:22,898 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2022-12-13 18:10:22,898 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2022-12-13 18:10:22,898 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2022-12-13 18:10:22,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2022-12-13 18:10:22,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2022-12-13 18:10:22,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2022-12-13 18:10:22,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2022-12-13 18:10:22,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2022-12-13 18:10:22,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2022-12-13 18:10:22,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 19 remaining) [2022-12-13 18:10:22,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2022-12-13 18:10:22,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2022-12-13 18:10:22,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2022-12-13 18:10:22,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2022-12-13 18:10:22,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2022-12-13 18:10:22,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2022-12-13 18:10:22,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2022-12-13 18:10:22,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 18:10:22,900 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-13 18:10:22,901 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 18:10:22,901 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-12-13 18:10:22,917 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 18:10:22,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 259 places, 286 transitions, 616 flow [2022-12-13 18:10:23,114 INFO L130 PetriNetUnfolder]: 96/773 cut-off events. [2022-12-13 18:10:23,114 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 18:10:23,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 828 conditions, 773 events. 96/773 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 3348 event pairs, 6 based on Foata normal form. 0/640 useless extension candidates. Maximal degree in co-relation 526. Up to 32 conditions per place. [2022-12-13 18:10:23,118 INFO L82 GeneralOperation]: Start removeDead. Operand has 259 places, 286 transitions, 616 flow [2022-12-13 18:10:23,122 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 259 places, 286 transitions, 616 flow [2022-12-13 18:10:23,122 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:10:23,122 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 259 places, 286 transitions, 616 flow [2022-12-13 18:10:23,122 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 259 places, 286 transitions, 616 flow [2022-12-13 18:10:23,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 259 places, 286 transitions, 616 flow [2022-12-13 18:10:23,199 INFO L130 PetriNetUnfolder]: 96/773 cut-off events. [2022-12-13 18:10:23,199 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 18:10:23,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 828 conditions, 773 events. 96/773 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 3348 event pairs, 6 based on Foata normal form. 0/640 useless extension candidates. Maximal degree in co-relation 526. Up to 32 conditions per place. [2022-12-13 18:10:23,222 INFO L119 LiptonReduction]: Number of co-enabled transitions 46992 [2022-12-13 18:10:26,123 INFO L134 LiptonReduction]: Checked pairs total: 178855 [2022-12-13 18:10:26,123 INFO L136 LiptonReduction]: Total number of compositions: 173 [2022-12-13 18:10:26,125 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:10:26,126 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;@35ea2973, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:10:26,126 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-12-13 18:10:26,128 INFO L130 PetriNetUnfolder]: 1/11 cut-off events. [2022-12-13 18:10:26,128 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:10:26,128 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:10:26,128 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 18:10:26,128 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2022-12-13 18:10:26,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:10:26,128 INFO L85 PathProgramCache]: Analyzing trace with hash 57684985, now seen corresponding path program 1 times [2022-12-13 18:10:26,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:10:26,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155012570] [2022-12-13 18:10:26,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:10:26,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:10:26,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:10:26,148 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 18:10:26,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:10:26,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155012570] [2022-12-13 18:10:26,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155012570] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:10:26,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:10:26,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:10:26,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115395764] [2022-12-13 18:10:26,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:10:26,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:10:26,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:10:26,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:10:26,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:10:26,159 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 459 [2022-12-13 18:10:26,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 147 transitions, 338 flow. Second operand has 3 states, 3 states have (on average 245.33333333333334) internal successors, (736), 3 states have internal predecessors, (736), 0 states have call successors, (0), 0 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 18:10:26,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:10:26,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 459 [2022-12-13 18:10:26,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:11:44,138 INFO L130 PetriNetUnfolder]: 740884/1104613 cut-off events. [2022-12-13 18:11:44,139 INFO L131 PetriNetUnfolder]: For 25170/25170 co-relation queries the response was YES. [2022-12-13 18:11:46,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2073330 conditions, 1104613 events. 740884/1104613 cut-off events. For 25170/25170 co-relation queries the response was YES. Maximal size of possible extension queue 20401. Compared 11062167 event pairs, 685376 based on Foata normal form. 163616/1169570 useless extension candidates. Maximal degree in co-relation 485908. Up to 954113 conditions per place. [2022-12-13 18:11:51,318 INFO L137 encePairwiseOnDemand]: 427/459 looper letters, 72 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2022-12-13 18:11:51,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 131 transitions, 454 flow [2022-12-13 18:11:51,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:11:51,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:11:51,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 842 transitions. [2022-12-13 18:11:51,321 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6114742193173566 [2022-12-13 18:11:51,321 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 842 transitions. [2022-12-13 18:11:51,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 842 transitions. [2022-12-13 18:11:51,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:11:51,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 842 transitions. [2022-12-13 18:11:51,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 280.6666666666667) internal successors, (842), 3 states have internal predecessors, (842), 0 states have call successors, (0), 0 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 18:11:51,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 459.0) internal successors, (1836), 4 states have internal predecessors, (1836), 0 states have call successors, (0), 0 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 18:11:51,326 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 459.0) internal successors, (1836), 4 states have internal predecessors, (1836), 0 states have call successors, (0), 0 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 18:11:51,326 INFO L175 Difference]: Start difference. First operand has 124 places, 147 transitions, 338 flow. Second operand 3 states and 842 transitions. [2022-12-13 18:11:51,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 131 transitions, 454 flow [2022-12-13 18:11:51,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 131 transitions, 454 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:11:51,335 INFO L231 Difference]: Finished difference. Result has 126 places, 120 transitions, 296 flow [2022-12-13 18:11:51,335 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=459, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=296, PETRI_PLACES=126, PETRI_TRANSITIONS=120} [2022-12-13 18:11:51,336 INFO L288 CegarLoopForPetriNet]: 124 programPoint places, 2 predicate places. [2022-12-13 18:11:51,336 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 120 transitions, 296 flow [2022-12-13 18:11:51,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 245.33333333333334) internal successors, (736), 3 states have internal predecessors, (736), 0 states have call successors, (0), 0 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 18:11:51,336 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:11:51,337 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:11:51,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 18:11:51,337 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2022-12-13 18:11:51,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:11:51,337 INFO L85 PathProgramCache]: Analyzing trace with hash 2082560868, now seen corresponding path program 1 times [2022-12-13 18:11:51,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:11:51,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519768826] [2022-12-13 18:11:51,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:11:51,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:11:51,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:11:51,357 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 18:11:51,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:11:51,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519768826] [2022-12-13 18:11:51,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519768826] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:11:51,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:11:51,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:11:51,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982244701] [2022-12-13 18:11:51,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:11:51,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:11:51,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:11:51,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:11:51,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:11:51,392 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 459 [2022-12-13 18:11:51,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 120 transitions, 296 flow. Second operand has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 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 18:11:51,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:11:51,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 459 [2022-12-13 18:11:51,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand