./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 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_d0b2bd9c-c6bc-46d7-8b07-9d11d0568447/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b2bd9c-c6bc-46d7-8b07-9d11d0568447/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_d0b2bd9c-c6bc-46d7-8b07-9d11d0568447/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b2bd9c-c6bc-46d7-8b07-9d11d0568447/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b2bd9c-c6bc-46d7-8b07-9d11d0568447/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_d0b2bd9c-c6bc-46d7-8b07-9d11d0568447/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 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 18:55:21,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:55:21,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:55:21,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:55:21,131 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:55:21,132 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:55:21,133 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:55:21,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:55:21,136 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:55:21,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:55:21,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:55:21,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:55:21,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:55:21,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:55:21,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:55:21,142 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:55:21,143 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:55:21,144 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:55:21,146 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:55:21,147 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:55:21,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:55:21,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:55:21,151 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:55:21,152 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:55:21,155 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:55:21,155 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:55:21,155 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:55:21,156 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:55:21,157 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:55:21,158 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:55:21,158 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:55:21,159 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:55:21,159 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:55:21,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:55:21,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:55:21,161 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:55:21,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:55:21,162 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:55:21,162 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:55:21,163 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:55:21,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:55:21,164 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b2bd9c-c6bc-46d7-8b07-9d11d0568447/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-12-13 18:55:21,184 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:55:21,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:55:21,185 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:55:21,185 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:55:21,190 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:55:21,190 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:55:21,191 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:55:21,191 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:55:21,191 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:55:21,192 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:55:21,192 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:55:21,192 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 18:55:21,192 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:55:21,192 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:55:21,193 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:55:21,193 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 18:55:21,193 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:55:21,193 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 18:55:21,193 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-13 18:55:21,193 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:55:21,193 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 18:55:21,193 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:55:21,194 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 18:55:21,194 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:55:21,194 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:55:21,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:55:21,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:55:21,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:55:21,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:55:21,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 18:55:21,195 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:55:21,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:55:21,195 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:55:21,195 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 18:55:21,195 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:55:21,196 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:55:21,196 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:55:21,196 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_d0b2bd9c-c6bc-46d7-8b07-9d11d0568447/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b2bd9c-c6bc-46d7-8b07-9d11d0568447/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 [2022-12-13 18:55:21,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:55:21,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:55:21,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:55:21,408 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:55:21,408 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:55:21,409 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b2bd9c-c6bc-46d7-8b07-9d11d0568447/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i [2022-12-13 18:55:23,987 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:55:24,177 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:55:24,177 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b2bd9c-c6bc-46d7-8b07-9d11d0568447/sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i [2022-12-13 18:55:24,185 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b2bd9c-c6bc-46d7-8b07-9d11d0568447/bin/uautomizer-uyxdKDjOR8/data/77f42e479/047ec61aad9d43629ee65994ff22a52a/FLAGf3cb7b575 [2022-12-13 18:55:24,565 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b2bd9c-c6bc-46d7-8b07-9d11d0568447/bin/uautomizer-uyxdKDjOR8/data/77f42e479/047ec61aad9d43629ee65994ff22a52a [2022-12-13 18:55:24,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:55:24,569 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:55:24,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:55:24,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:55:24,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:55:24,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:55:24" (1/1) ... [2022-12-13 18:55:24,574 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b61557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:55:24, skipping insertion in model container [2022-12-13 18:55:24,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:55:24" (1/1) ... [2022-12-13 18:55:24,580 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:55:24,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:55:24,787 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_d0b2bd9c-c6bc-46d7-8b07-9d11d0568447/sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i[30176,30189] [2022-12-13 18:55:24,805 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:55:24,814 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:55:24,835 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_d0b2bd9c-c6bc-46d7-8b07-9d11d0568447/sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i[30176,30189] [2022-12-13 18:55:24,843 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:55:24,864 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:55:24,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:55:24 WrapperNode [2022-12-13 18:55:24,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:55:24,865 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:55:24,866 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:55:24,866 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:55:24,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:55:24" (1/1) ... [2022-12-13 18:55:24,880 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:55:24" (1/1) ... [2022-12-13 18:55:24,894 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 99 [2022-12-13 18:55:24,895 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:55:24,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:55:24,895 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:55:24,895 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:55:24,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:55:24" (1/1) ... [2022-12-13 18:55:24,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:55:24" (1/1) ... [2022-12-13 18:55:24,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:55:24" (1/1) ... [2022-12-13 18:55:24,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:55:24" (1/1) ... [2022-12-13 18:55:24,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:55:24" (1/1) ... [2022-12-13 18:55:24,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:55:24" (1/1) ... [2022-12-13 18:55:24,916 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:55:24" (1/1) ... [2022-12-13 18:55:24,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:55:24" (1/1) ... [2022-12-13 18:55:24,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:55:24,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:55:24,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:55:24,920 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:55:24,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:55:24" (1/1) ... [2022-12-13 18:55:24,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:55:24,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b2bd9c-c6bc-46d7-8b07-9d11d0568447/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:55:24,943 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b2bd9c-c6bc-46d7-8b07-9d11d0568447/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:55:24,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b2bd9c-c6bc-46d7-8b07-9d11d0568447/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:55:24,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 18:55:24,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 18:55:24,969 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 18:55:24,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:55:24,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 18:55:24,969 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 18:55:24,969 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 18:55:24,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 18:55:24,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:55:24,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:55:24,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:55:24,971 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 18:55:25,073 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:55:25,074 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:55:25,320 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:55:25,326 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:55:25,326 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-12-13 18:55:25,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:55:25 BoogieIcfgContainer [2022-12-13 18:55:25,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:55:25,330 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:55:25,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:55:25,333 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:55:25,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:55:24" (1/3) ... [2022-12-13 18:55:25,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e3f767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:55:25, skipping insertion in model container [2022-12-13 18:55:25,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:55:24" (2/3) ... [2022-12-13 18:55:25,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e3f767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:55:25, skipping insertion in model container [2022-12-13 18:55:25,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:55:25" (3/3) ... [2022-12-13 18:55:25,335 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_37-indirect_racing.i [2022-12-13 18:55:25,341 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 18:55:25,349 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:55:25,349 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-12-13 18:55:25,349 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 18:55:25,401 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 18:55:25,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 175 transitions, 358 flow [2022-12-13 18:55:25,494 INFO L130 PetriNetUnfolder]: 17/224 cut-off events. [2022-12-13 18:55:25,494 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 18:55:25,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 224 events. 17/224 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 653 event pairs, 0 based on Foata normal form. 0/189 useless extension candidates. Maximal degree in co-relation 120. Up to 6 conditions per place. [2022-12-13 18:55:25,500 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 175 transitions, 358 flow [2022-12-13 18:55:25,507 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 175 transitions, 358 flow [2022-12-13 18:55:25,510 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:55:25,526 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 175 transitions, 358 flow [2022-12-13 18:55:25,528 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 175 transitions, 358 flow [2022-12-13 18:55:25,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 175 transitions, 358 flow [2022-12-13 18:55:25,561 INFO L130 PetriNetUnfolder]: 17/224 cut-off events. [2022-12-13 18:55:25,562 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 18:55:25,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 224 events. 17/224 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 653 event pairs, 0 based on Foata normal form. 0/189 useless extension candidates. Maximal degree in co-relation 120. Up to 6 conditions per place. [2022-12-13 18:55:25,565 INFO L119 LiptonReduction]: Number of co-enabled transitions 7260 [2022-12-13 18:55:28,141 INFO L134 LiptonReduction]: Checked pairs total: 30463 [2022-12-13 18:55:28,141 INFO L136 LiptonReduction]: Total number of compositions: 127 [2022-12-13 18:55:28,156 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:55:28,160 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;@2146ec4b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:55:28,161 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-12-13 18:55:28,162 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 18:55:28,162 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:55:28,162 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:55:28,163 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 18:55:28,163 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-12-13 18:55:28,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:55:28,168 INFO L85 PathProgramCache]: Analyzing trace with hash 624, now seen corresponding path program 1 times [2022-12-13 18:55:28,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:55:28,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354836666] [2022-12-13 18:55:28,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:55:28,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:55:28,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:55:28,254 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 18:55:28,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:55:28,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354836666] [2022-12-13 18:55:28,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354836666] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:55:28,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:55:28,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 18:55:28,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906217453] [2022-12-13 18:55:28,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:55:28,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 18:55:28,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:55:28,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 18:55:28,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 18:55:28,282 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 302 [2022-12-13 18:55:28,284 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 74 transitions, 156 flow. Second operand has 2 states, 2 states have (on average 161.5) internal successors, (323), 2 states have internal predecessors, (323), 0 states have call successors, (0), 0 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 18:55:28,284 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:55:28,285 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 302 [2022-12-13 18:55:28,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:55:28,362 INFO L130 PetriNetUnfolder]: 97/430 cut-off events. [2022-12-13 18:55:28,362 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 18:55:28,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 430 events. 97/430 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2067 event pairs, 96 based on Foata normal form. 9/399 useless extension candidates. Maximal degree in co-relation 615. Up to 224 conditions per place. [2022-12-13 18:55:28,365 INFO L137 encePairwiseOnDemand]: 288/302 looper letters, 24 selfloop transitions, 0 changer transitions 0/60 dead transitions. [2022-12-13 18:55:28,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 60 transitions, 176 flow [2022-12-13 18:55:28,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 18:55:28,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 18:55:28,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 360 transitions. [2022-12-13 18:55:28,375 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5960264900662252 [2022-12-13 18:55:28,375 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 360 transitions. [2022-12-13 18:55:28,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 360 transitions. [2022-12-13 18:55:28,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:55:28,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 360 transitions. [2022-12-13 18:55:28,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 180.0) internal successors, (360), 2 states have internal predecessors, (360), 0 states have call successors, (0), 0 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 18:55:28,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 302.0) internal successors, (906), 3 states have internal predecessors, (906), 0 states have call successors, (0), 0 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 18:55:28,384 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 302.0) internal successors, (906), 3 states have internal predecessors, (906), 0 states have call successors, (0), 0 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 18:55:28,386 INFO L175 Difference]: Start difference. First operand has 68 places, 74 transitions, 156 flow. Second operand 2 states and 360 transitions. [2022-12-13 18:55:28,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 60 transitions, 176 flow [2022-12-13 18:55:28,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 60 transitions, 176 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:55:28,390 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 128 flow [2022-12-13 18:55:28,391 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=128, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2022-12-13 18:55:28,394 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -5 predicate places. [2022-12-13 18:55:28,394 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 128 flow [2022-12-13 18:55:28,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 161.5) internal successors, (323), 2 states have internal predecessors, (323), 0 states have call successors, (0), 0 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 18:55:28,394 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:55:28,395 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 18:55:28,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:55:28,395 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-12-13 18:55:28,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:55:28,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1305062538, now seen corresponding path program 1 times [2022-12-13 18:55:28,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:55:28,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081559260] [2022-12-13 18:55:28,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:55:28,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:55:28,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:55:28,424 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:55:28,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:55:28,452 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:55:28,452 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 18:55:28,453 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-12-13 18:55:28,455 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2022-12-13 18:55:28,455 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2022-12-13 18:55:28,455 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2022-12-13 18:55:28,455 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2022-12-13 18:55:28,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2022-12-13 18:55:28,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2022-12-13 18:55:28,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2022-12-13 18:55:28,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2022-12-13 18:55:28,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2022-12-13 18:55:28,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2022-12-13 18:55:28,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 19 remaining) [2022-12-13 18:55:28,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2022-12-13 18:55:28,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2022-12-13 18:55:28,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2022-12-13 18:55:28,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2022-12-13 18:55:28,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2022-12-13 18:55:28,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2022-12-13 18:55:28,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2022-12-13 18:55:28,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 18:55:28,458 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 18:55:28,461 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 18:55:28,461 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 18:55:28,480 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 18:55:28,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 229 places, 243 transitions, 504 flow [2022-12-13 18:55:28,521 INFO L130 PetriNetUnfolder]: 31/372 cut-off events. [2022-12-13 18:55:28,521 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 18:55:28,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386 conditions, 372 events. 31/372 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1428 event pairs, 0 based on Foata normal form. 0/312 useless extension candidates. Maximal degree in co-relation 226. Up to 9 conditions per place. [2022-12-13 18:55:28,523 INFO L82 GeneralOperation]: Start removeDead. Operand has 229 places, 243 transitions, 504 flow [2022-12-13 18:55:28,526 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 229 places, 243 transitions, 504 flow [2022-12-13 18:55:28,526 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:55:28,526 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 229 places, 243 transitions, 504 flow [2022-12-13 18:55:28,526 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 229 places, 243 transitions, 504 flow [2022-12-13 18:55:28,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 229 places, 243 transitions, 504 flow [2022-12-13 18:55:28,561 INFO L130 PetriNetUnfolder]: 31/372 cut-off events. [2022-12-13 18:55:28,561 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 18:55:28,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386 conditions, 372 events. 31/372 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1428 event pairs, 0 based on Foata normal form. 0/312 useless extension candidates. Maximal degree in co-relation 226. Up to 9 conditions per place. [2022-12-13 18:55:28,571 INFO L119 LiptonReduction]: Number of co-enabled transitions 24684 [2022-12-13 18:55:31,154 INFO L134 LiptonReduction]: Checked pairs total: 153359 [2022-12-13 18:55:31,154 INFO L136 LiptonReduction]: Total number of compositions: 141 [2022-12-13 18:55:31,157 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:55:31,158 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;@2146ec4b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:55:31,158 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-12-13 18:55:31,159 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 18:55:31,159 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:55:31,159 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:55:31,159 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 18:55:31,159 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-12-13 18:55:31,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:55:31,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1075, now seen corresponding path program 1 times [2022-12-13 18:55:31,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:55:31,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889193637] [2022-12-13 18:55:31,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:55:31,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:55:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:55:31,171 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 18:55:31,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:55:31,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889193637] [2022-12-13 18:55:31,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889193637] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:55:31,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:55:31,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 18:55:31,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537052308] [2022-12-13 18:55:31,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:55:31,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 18:55:31,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:55:31,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 18:55:31,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 18:55:31,174 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 384 [2022-12-13 18:55:31,174 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 129 transitions, 276 flow. Second operand has 2 states, 2 states have (on average 221.5) internal successors, (443), 2 states have internal predecessors, (443), 0 states have call successors, (0), 0 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 18:55:31,174 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:55:31,174 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 384 [2022-12-13 18:55:31,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:55:32,060 INFO L130 PetriNetUnfolder]: 3147/8660 cut-off events. [2022-12-13 18:55:32,061 INFO L131 PetriNetUnfolder]: For 75/75 co-relation queries the response was YES. [2022-12-13 18:55:32,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13783 conditions, 8660 events. 3147/8660 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 78827 event pairs, 3132 based on Foata normal form. 550/8332 useless extension candidates. Maximal degree in co-relation 9731. Up to 5043 conditions per place. [2022-12-13 18:55:32,113 INFO L137 encePairwiseOnDemand]: 366/384 looper letters, 39 selfloop transitions, 0 changer transitions 0/111 dead transitions. [2022-12-13 18:55:32,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 111 transitions, 318 flow [2022-12-13 18:55:32,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 18:55:32,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 18:55:32,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 499 transitions. [2022-12-13 18:55:32,117 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6497395833333334 [2022-12-13 18:55:32,117 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 499 transitions. [2022-12-13 18:55:32,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 499 transitions. [2022-12-13 18:55:32,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:55:32,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 499 transitions. [2022-12-13 18:55:32,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 249.5) internal successors, (499), 2 states have internal predecessors, (499), 0 states have call successors, (0), 0 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 18:55:32,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 384.0) internal successors, (1152), 3 states have internal predecessors, (1152), 0 states have call successors, (0), 0 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 18:55:32,123 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 384.0) internal successors, (1152), 3 states have internal predecessors, (1152), 0 states have call successors, (0), 0 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 18:55:32,123 INFO L175 Difference]: Start difference. First operand has 118 places, 129 transitions, 276 flow. Second operand 2 states and 499 transitions. [2022-12-13 18:55:32,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 111 transitions, 318 flow [2022-12-13 18:55:32,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 111 transitions, 318 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:55:32,127 INFO L231 Difference]: Finished difference. Result has 115 places, 111 transitions, 240 flow [2022-12-13 18:55:32,127 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=240, PETRI_PLACES=115, PETRI_TRANSITIONS=111} [2022-12-13 18:55:32,127 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, -3 predicate places. [2022-12-13 18:55:32,128 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 111 transitions, 240 flow [2022-12-13 18:55:32,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 221.5) internal successors, (443), 2 states have internal predecessors, (443), 0 states have call successors, (0), 0 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 18:55:32,128 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:55:32,128 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:55:32,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 18:55:32,128 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-12-13 18:55:32,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:55:32,129 INFO L85 PathProgramCache]: Analyzing trace with hash -338532669, now seen corresponding path program 1 times [2022-12-13 18:55:32,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:55:32,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668896227] [2022-12-13 18:55:32,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:55:32,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:55:32,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:55:32,207 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 18:55:32,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:55:32,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668896227] [2022-12-13 18:55:32,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668896227] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:55:32,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:55:32,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:55:32,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754175591] [2022-12-13 18:55:32,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:55:32,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:55:32,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:55:32,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:55:32,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:55:32,223 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 384 [2022-12-13 18:55:32,224 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 111 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 210.33333333333334) internal successors, (631), 3 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:55:32,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:55:32,225 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 384 [2022-12-13 18:55:32,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:55:33,093 INFO L130 PetriNetUnfolder]: 4793/11771 cut-off events. [2022-12-13 18:55:33,093 INFO L131 PetriNetUnfolder]: For 89/89 co-relation queries the response was YES. [2022-12-13 18:55:33,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19481 conditions, 11771 events. 4793/11771 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 103594 event pairs, 1833 based on Foata normal form. 0/10922 useless extension candidates. Maximal degree in co-relation 19476. Up to 7431 conditions per place. [2022-12-13 18:55:33,131 INFO L137 encePairwiseOnDemand]: 378/384 looper letters, 58 selfloop transitions, 2 changer transitions 0/122 dead transitions. [2022-12-13 18:55:33,131 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 122 transitions, 387 flow [2022-12-13 18:55:33,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:55:33,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:55:33,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 688 transitions. [2022-12-13 18:55:33,133 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5972222222222222 [2022-12-13 18:55:33,133 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 688 transitions. [2022-12-13 18:55:33,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 688 transitions. [2022-12-13 18:55:33,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:55:33,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 688 transitions. [2022-12-13 18:55:33,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 229.33333333333334) internal successors, (688), 3 states have internal predecessors, (688), 0 states have call successors, (0), 0 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 18:55:33,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 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 18:55:33,137 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 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 18:55:33,137 INFO L175 Difference]: Start difference. First operand has 115 places, 111 transitions, 240 flow. Second operand 3 states and 688 transitions. [2022-12-13 18:55:33,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 122 transitions, 387 flow [2022-12-13 18:55:33,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 122 transitions, 387 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:55:33,139 INFO L231 Difference]: Finished difference. Result has 114 places, 109 transitions, 246 flow [2022-12-13 18:55:33,139 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=114, PETRI_TRANSITIONS=109} [2022-12-13 18:55:33,140 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, -4 predicate places. [2022-12-13 18:55:33,140 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 109 transitions, 246 flow [2022-12-13 18:55:33,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.33333333333334) internal successors, (631), 3 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:55:33,140 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:55:33,141 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:55:33,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 18:55:33,141 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-12-13 18:55:33,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:55:33,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1982649348, now seen corresponding path program 1 times [2022-12-13 18:55:33,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:55:33,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426107638] [2022-12-13 18:55:33,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:55:33,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:55:33,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:55:33,188 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 18:55:33,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:55:33,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426107638] [2022-12-13 18:55:33,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426107638] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:55:33,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:55:33,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:55:33,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379629684] [2022-12-13 18:55:33,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:55:33,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:55:33,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:55:33,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:55:33,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:55:33,200 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 384 [2022-12-13 18:55:33,202 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 109 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 0 states have call successors, (0), 0 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 18:55:33,202 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:55:33,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 384 [2022-12-13 18:55:33,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:55:33,970 INFO L130 PetriNetUnfolder]: 3258/8914 cut-off events. [2022-12-13 18:55:33,970 INFO L131 PetriNetUnfolder]: For 214/214 co-relation queries the response was YES. [2022-12-13 18:55:33,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14446 conditions, 8914 events. 3258/8914 cut-off events. For 214/214 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 81663 event pairs, 2941 based on Foata normal form. 0/8194 useless extension candidates. Maximal degree in co-relation 14440. Up to 5251 conditions per place. [2022-12-13 18:55:33,995 INFO L137 encePairwiseOnDemand]: 381/384 looper letters, 52 selfloop transitions, 2 changer transitions 0/123 dead transitions. [2022-12-13 18:55:33,995 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 123 transitions, 382 flow [2022-12-13 18:55:33,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:55:33,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:55:33,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 705 transitions. [2022-12-13 18:55:33,996 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6119791666666666 [2022-12-13 18:55:33,996 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 705 transitions. [2022-12-13 18:55:33,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 705 transitions. [2022-12-13 18:55:33,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:55:33,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 705 transitions. [2022-12-13 18:55:33,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 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 18:55:33,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 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 18:55:34,000 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 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 18:55:34,000 INFO L175 Difference]: Start difference. First operand has 114 places, 109 transitions, 246 flow. Second operand 3 states and 705 transitions. [2022-12-13 18:55:34,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 123 transitions, 382 flow [2022-12-13 18:55:34,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 123 transitions, 382 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:55:34,002 INFO L231 Difference]: Finished difference. Result has 117 places, 110 transitions, 258 flow [2022-12-13 18:55:34,002 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=117, PETRI_TRANSITIONS=110} [2022-12-13 18:55:34,002 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, -1 predicate places. [2022-12-13 18:55:34,002 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 110 transitions, 258 flow [2022-12-13 18:55:34,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 0 states have call successors, (0), 0 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 18:55:34,003 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:55:34,003 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 18:55:34,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 18:55:34,003 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-12-13 18:55:34,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:55:34,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1541036089, now seen corresponding path program 1 times [2022-12-13 18:55:34,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:55:34,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262145216] [2022-12-13 18:55:34,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:55:34,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:55:34,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:55:34,018 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:55:34,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:55:34,030 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:55:34,030 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 18:55:34,030 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2022-12-13 18:55:34,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2022-12-13 18:55:34,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2022-12-13 18:55:34,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2022-12-13 18:55:34,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2022-12-13 18:55:34,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2022-12-13 18:55:34,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2022-12-13 18:55:34,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2022-12-13 18:55:34,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2022-12-13 18:55:34,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2022-12-13 18:55:34,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2022-12-13 18:55:34,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2022-12-13 18:55:34,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2022-12-13 18:55:34,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2022-12-13 18:55:34,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2022-12-13 18:55:34,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2022-12-13 18:55:34,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2022-12-13 18:55:34,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2022-12-13 18:55:34,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2022-12-13 18:55:34,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2022-12-13 18:55:34,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2022-12-13 18:55:34,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2022-12-13 18:55:34,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2022-12-13 18:55:34,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2022-12-13 18:55:34,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2022-12-13 18:55:34,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 18:55:34,033 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-13 18:55:34,033 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 18:55:34,033 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 18:55:34,061 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 18:55:34,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 292 places, 311 transitions, 652 flow [2022-12-13 18:55:34,151 INFO L130 PetriNetUnfolder]: 50/565 cut-off events. [2022-12-13 18:55:34,152 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 18:55:34,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 593 conditions, 565 events. 50/565 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2476 event pairs, 1 based on Foata normal form. 0/474 useless extension candidates. Maximal degree in co-relation 380. Up to 16 conditions per place. [2022-12-13 18:55:34,155 INFO L82 GeneralOperation]: Start removeDead. Operand has 292 places, 311 transitions, 652 flow [2022-12-13 18:55:34,158 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 292 places, 311 transitions, 652 flow [2022-12-13 18:55:34,158 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:55:34,158 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 292 places, 311 transitions, 652 flow [2022-12-13 18:55:34,158 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 292 places, 311 transitions, 652 flow [2022-12-13 18:55:34,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 292 places, 311 transitions, 652 flow [2022-12-13 18:55:34,216 INFO L130 PetriNetUnfolder]: 50/565 cut-off events. [2022-12-13 18:55:34,216 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 18:55:34,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 593 conditions, 565 events. 50/565 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2476 event pairs, 1 based on Foata normal form. 0/474 useless extension candidates. Maximal degree in co-relation 380. Up to 16 conditions per place. [2022-12-13 18:55:34,236 INFO L119 LiptonReduction]: Number of co-enabled transitions 50688 [2022-12-13 18:55:37,239 INFO L134 LiptonReduction]: Checked pairs total: 307103 [2022-12-13 18:55:37,239 INFO L136 LiptonReduction]: Total number of compositions: 166 [2022-12-13 18:55:37,241 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:55:37,241 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;@2146ec4b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:55:37,242 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-12-13 18:55:37,242 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 18:55:37,242 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:55:37,242 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:55:37,242 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 18:55:37,242 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-12-13 18:55:37,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:55:37,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1621, now seen corresponding path program 1 times [2022-12-13 18:55:37,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:55:37,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945665886] [2022-12-13 18:55:37,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:55:37,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:55:37,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:55:37,248 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 18:55:37,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:55:37,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945665886] [2022-12-13 18:55:37,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945665886] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:55:37,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:55:37,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 18:55:37,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203401779] [2022-12-13 18:55:37,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:55:37,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 18:55:37,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:55:37,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 18:55:37,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 18:55:37,250 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 477 [2022-12-13 18:55:37,251 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 178 transitions, 386 flow. Second operand has 2 states, 2 states have (on average 281.5) internal successors, (563), 2 states have internal predecessors, (563), 0 states have call successors, (0), 0 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 18:55:37,251 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:55:37,251 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 477 [2022-12-13 18:55:37,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:55:48,357 INFO L130 PetriNetUnfolder]: 65024/131175 cut-off events. [2022-12-13 18:55:48,357 INFO L131 PetriNetUnfolder]: For 1935/1935 co-relation queries the response was YES. [2022-12-13 18:55:48,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222995 conditions, 131175 events. 65024/131175 cut-off events. For 1935/1935 co-relation queries the response was YES. Maximal size of possible extension queue 2692. Compared 1484654 event pairs, 64813 based on Foata normal form. 13055/133290 useless extension candidates. Maximal degree in co-relation 120537. Up to 90463 conditions per place. [2022-12-13 18:55:49,010 INFO L137 encePairwiseOnDemand]: 453/477 looper letters, 53 selfloop transitions, 0 changer transitions 0/154 dead transitions. [2022-12-13 18:55:49,010 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 154 transitions, 444 flow [2022-12-13 18:55:49,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 18:55:49,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 18:55:49,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 639 transitions. [2022-12-13 18:55:49,012 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6698113207547169 [2022-12-13 18:55:49,012 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 639 transitions. [2022-12-13 18:55:49,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 639 transitions. [2022-12-13 18:55:49,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:55:49,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 639 transitions. [2022-12-13 18:55:49,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 319.5) internal successors, (639), 2 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:55:49,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 477.0) internal successors, (1431), 3 states have internal predecessors, (1431), 0 states have call successors, (0), 0 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 18:55:49,016 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 477.0) internal successors, (1431), 3 states have internal predecessors, (1431), 0 states have call successors, (0), 0 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 18:55:49,016 INFO L175 Difference]: Start difference. First operand has 162 places, 178 transitions, 386 flow. Second operand 2 states and 639 transitions. [2022-12-13 18:55:49,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 154 transitions, 444 flow [2022-12-13 18:55:49,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 154 transitions, 444 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:55:49,019 INFO L231 Difference]: Finished difference. Result has 159 places, 154 transitions, 338 flow [2022-12-13 18:55:49,020 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=477, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=338, PETRI_PLACES=159, PETRI_TRANSITIONS=154} [2022-12-13 18:55:49,020 INFO L288 CegarLoopForPetriNet]: 162 programPoint places, -3 predicate places. [2022-12-13 18:55:49,020 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 154 transitions, 338 flow [2022-12-13 18:55:49,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 281.5) internal successors, (563), 2 states have internal predecessors, (563), 0 states have call successors, (0), 0 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 18:55:49,021 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:55:49,021 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:55:49,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 18:55:49,021 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-12-13 18:55:49,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:55:49,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1653111570, now seen corresponding path program 1 times [2022-12-13 18:55:49,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:55:49,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682629655] [2022-12-13 18:55:49,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:55:49,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:55:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:55:49,047 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 18:55:49,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:55:49,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682629655] [2022-12-13 18:55:49,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682629655] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:55:49,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:55:49,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:55:49,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225791855] [2022-12-13 18:55:49,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:55:49,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:55:49,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:55:49,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:55:49,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:55:49,068 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 477 [2022-12-13 18:55:49,069 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 154 transitions, 338 flow. Second operand has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 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 18:55:49,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:55:49,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 477 [2022-12-13 18:55:49,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:56:05,916 INFO L130 PetriNetUnfolder]: 113278/217604 cut-off events. [2022-12-13 18:56:05,916 INFO L131 PetriNetUnfolder]: For 2642/2642 co-relation queries the response was YES. [2022-12-13 18:56:06,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376113 conditions, 217604 events. 113278/217604 cut-off events. For 2642/2642 co-relation queries the response was YES. Maximal size of possible extension queue 3861. Compared 2444598 event pairs, 60422 based on Foata normal form. 0/203004 useless extension candidates. Maximal degree in co-relation 376107. Up to 155960 conditions per place. [2022-12-13 18:56:06,997 INFO L137 encePairwiseOnDemand]: 468/477 looper letters, 77 selfloop transitions, 3 changer transitions 0/167 dead transitions. [2022-12-13 18:56:06,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 167 transitions, 536 flow [2022-12-13 18:56:06,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:56:06,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:56:06,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 872 transitions. [2022-12-13 18:56:07,000 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6093640810621943 [2022-12-13 18:56:07,000 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 872 transitions. [2022-12-13 18:56:07,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 872 transitions. [2022-12-13 18:56:07,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:56:07,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 872 transitions. [2022-12-13 18:56:07,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 0 states have call successors, (0), 0 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 18:56:07,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 477.0) internal successors, (1908), 4 states have internal predecessors, (1908), 0 states have call successors, (0), 0 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 18:56:07,007 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 477.0) internal successors, (1908), 4 states have internal predecessors, (1908), 0 states have call successors, (0), 0 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 18:56:07,007 INFO L175 Difference]: Start difference. First operand has 159 places, 154 transitions, 338 flow. Second operand 3 states and 872 transitions. [2022-12-13 18:56:07,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 167 transitions, 536 flow [2022-12-13 18:56:07,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 167 transitions, 536 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:56:07,014 INFO L231 Difference]: Finished difference. Result has 156 places, 151 transitions, 347 flow [2022-12-13 18:56:07,014 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=477, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=347, PETRI_PLACES=156, PETRI_TRANSITIONS=151} [2022-12-13 18:56:07,015 INFO L288 CegarLoopForPetriNet]: 162 programPoint places, -6 predicate places. [2022-12-13 18:56:07,015 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 151 transitions, 347 flow [2022-12-13 18:56:07,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 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 18:56:07,015 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:56:07,015 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:56:07,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 18:56:07,016 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-12-13 18:56:07,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:56:07,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1966760912, now seen corresponding path program 1 times [2022-12-13 18:56:07,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:56:07,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398845724] [2022-12-13 18:56:07,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:56:07,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:56:07,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:56:07,045 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 18:56:07,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:56:07,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398845724] [2022-12-13 18:56:07,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398845724] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:56:07,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:56:07,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:56:07,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267469972] [2022-12-13 18:56:07,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:56:07,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:56:07,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:56:07,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:56:07,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:56:07,056 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 477 [2022-12-13 18:56:07,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 151 transitions, 347 flow. Second operand has 3 states, 3 states have (on average 278.3333333333333) internal successors, (835), 3 states have internal predecessors, (835), 0 states have call successors, (0), 0 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 18:56:07,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:56:07,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 477 [2022-12-13 18:56:07,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:56:18,384 INFO L130 PetriNetUnfolder]: 71568/144118 cut-off events. [2022-12-13 18:56:18,384 INFO L131 PetriNetUnfolder]: For 4256/4256 co-relation queries the response was YES. [2022-12-13 18:56:18,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248176 conditions, 144118 events. 71568/144118 cut-off events. For 4256/4256 co-relation queries the response was YES. Maximal size of possible extension queue 2910. Compared 1648814 event pairs, 66976 based on Foata normal form. 0/133888 useless extension candidates. Maximal degree in co-relation 248169. Up to 100055 conditions per place. [2022-12-13 18:56:19,283 INFO L137 encePairwiseOnDemand]: 474/477 looper letters, 66 selfloop transitions, 2 changer transitions 0/165 dead transitions. [2022-12-13 18:56:19,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 165 transitions, 511 flow [2022-12-13 18:56:19,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:56:19,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:56:19,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 899 transitions. [2022-12-13 18:56:19,285 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6282320055904962 [2022-12-13 18:56:19,285 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 899 transitions. [2022-12-13 18:56:19,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 899 transitions. [2022-12-13 18:56:19,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:56:19,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 899 transitions. [2022-12-13 18:56:19,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 299.6666666666667) internal successors, (899), 3 states have internal predecessors, (899), 0 states have call successors, (0), 0 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 18:56:19,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 477.0) internal successors, (1908), 4 states have internal predecessors, (1908), 0 states have call successors, (0), 0 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 18:56:19,290 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 477.0) internal successors, (1908), 4 states have internal predecessors, (1908), 0 states have call successors, (0), 0 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 18:56:19,290 INFO L175 Difference]: Start difference. First operand has 156 places, 151 transitions, 347 flow. Second operand 3 states and 899 transitions. [2022-12-13 18:56:19,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 165 transitions, 511 flow [2022-12-13 18:56:19,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 165 transitions, 511 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:56:19,294 INFO L231 Difference]: Finished difference. Result has 159 places, 152 transitions, 359 flow [2022-12-13 18:56:19,294 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=477, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=359, PETRI_PLACES=159, PETRI_TRANSITIONS=152} [2022-12-13 18:56:19,295 INFO L288 CegarLoopForPetriNet]: 162 programPoint places, -3 predicate places. [2022-12-13 18:56:19,295 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 152 transitions, 359 flow [2022-12-13 18:56:19,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 278.3333333333333) internal successors, (835), 3 states have internal predecessors, (835), 0 states have call successors, (0), 0 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 18:56:19,295 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:56:19,295 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:56:19,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 18:56:19,295 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-12-13 18:56:19,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:56:19,296 INFO L85 PathProgramCache]: Analyzing trace with hash 705880449, now seen corresponding path program 1 times [2022-12-13 18:56:19,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:56:19,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575260795] [2022-12-13 18:56:19,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:56:19,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:56:19,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:56:19,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:56:19,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:56:19,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575260795] [2022-12-13 18:56:19,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575260795] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:56:19,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432323676] [2022-12-13 18:56:19,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:56:19,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:56:19,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b2bd9c-c6bc-46d7-8b07-9d11d0568447/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:56:19,337 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b2bd9c-c6bc-46d7-8b07-9d11d0568447/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:56:19,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b2bd9c-c6bc-46d7-8b07-9d11d0568447/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 18:56:19,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:56:19,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 18:56:19,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:56:19,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:56:19,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:56:19,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:56:19,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432323676] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:56:19,453 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:56:19,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 18:56:19,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963009464] [2022-12-13 18:56:19,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:56:19,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:56:19,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:56:19,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:56:19,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:56:19,469 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 477 [2022-12-13 18:56:19,470 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 152 transitions, 359 flow. Second operand has 7 states, 7 states have (on average 278.2857142857143) internal successors, (1948), 7 states have internal predecessors, (1948), 0 states have call successors, (0), 0 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 18:56:19,471 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:56:19,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 477 [2022-12-13 18:56:19,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:56:22,783 INFO L130 PetriNetUnfolder]: 18561/39971 cut-off events. [2022-12-13 18:56:22,783 INFO L131 PetriNetUnfolder]: For 7274/7274 co-relation queries the response was YES. [2022-12-13 18:56:22,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71180 conditions, 39971 events. 18561/39971 cut-off events. For 7274/7274 co-relation queries the response was YES. Maximal size of possible extension queue 845. Compared 409815 event pairs, 7341 based on Foata normal form. 2707/41954 useless extension candidates. Maximal degree in co-relation 71171. Up to 18532 conditions per place. [2022-12-13 18:56:22,972 INFO L137 encePairwiseOnDemand]: 474/477 looper letters, 118 selfloop transitions, 4 changer transitions 0/207 dead transitions. [2022-12-13 18:56:22,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 207 transitions, 714 flow [2022-12-13 18:56:22,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:56:22,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 18:56:22,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1778 transitions. [2022-12-13 18:56:22,975 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6212438853948288 [2022-12-13 18:56:22,975 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1778 transitions. [2022-12-13 18:56:22,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1778 transitions. [2022-12-13 18:56:22,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:56:22,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1778 transitions. [2022-12-13 18:56:22,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 296.3333333333333) internal successors, (1778), 6 states have internal predecessors, (1778), 0 states have call successors, (0), 0 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 18:56:22,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 477.0) internal successors, (3339), 7 states have internal predecessors, (3339), 0 states have call successors, (0), 0 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 18:56:22,982 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 477.0) internal successors, (3339), 7 states have internal predecessors, (3339), 0 states have call successors, (0), 0 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 18:56:22,982 INFO L175 Difference]: Start difference. First operand has 159 places, 152 transitions, 359 flow. Second operand 6 states and 1778 transitions. [2022-12-13 18:56:22,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 207 transitions, 714 flow [2022-12-13 18:56:22,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 207 transitions, 706 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 18:56:22,987 INFO L231 Difference]: Finished difference. Result has 143 places, 130 transitions, 306 flow [2022-12-13 18:56:22,987 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=477, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=306, PETRI_PLACES=143, PETRI_TRANSITIONS=130} [2022-12-13 18:56:22,987 INFO L288 CegarLoopForPetriNet]: 162 programPoint places, -19 predicate places. [2022-12-13 18:56:22,988 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 130 transitions, 306 flow [2022-12-13 18:56:22,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.2857142857143) internal successors, (1948), 7 states have internal predecessors, (1948), 0 states have call successors, (0), 0 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 18:56:22,989 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:56:22,989 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:56:22,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b2bd9c-c6bc-46d7-8b07-9d11d0568447/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 18:56:23,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b2bd9c-c6bc-46d7-8b07-9d11d0568447/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:56:23,190 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-12-13 18:56:23,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:56:23,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1682515257, now seen corresponding path program 1 times [2022-12-13 18:56:23,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:56:23,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437845958] [2022-12-13 18:56:23,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:56:23,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:56:23,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:56:23,450 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 18:56:23,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:56:23,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437845958] [2022-12-13 18:56:23,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437845958] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:56:23,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:56:23,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 18:56:23,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884005069] [2022-12-13 18:56:23,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:56:23,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:56:23,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:56:23,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:56:23,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:56:23,807 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 477 [2022-12-13 18:56:23,809 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 130 transitions, 306 flow. Second operand has 6 states, 6 states have (on average 214.66666666666666) internal successors, (1288), 6 states have internal predecessors, (1288), 0 states have call successors, (0), 0 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 18:56:23,809 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:56:23,809 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 477 [2022-12-13 18:56:23,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:57:33,519 INFO L130 PetriNetUnfolder]: 590126/881568 cut-off events. [2022-12-13 18:57:33,519 INFO L131 PetriNetUnfolder]: For 247097/247097 co-relation queries the response was YES. [2022-12-13 18:57:35,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1876788 conditions, 881568 events. 590126/881568 cut-off events. For 247097/247097 co-relation queries the response was YES. Maximal size of possible extension queue 10802. Compared 8033512 event pairs, 142080 based on Foata normal form. 0/850630 useless extension candidates. Maximal degree in co-relation 1876779. Up to 279054 conditions per place. [2022-12-13 18:57:38,823 INFO L137 encePairwiseOnDemand]: 411/477 looper letters, 346 selfloop transitions, 126 changer transitions 0/504 dead transitions. [2022-12-13 18:57:38,824 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 504 transitions, 2094 flow [2022-12-13 18:57:38,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:57:38,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 18:57:38,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1745 transitions. [2022-12-13 18:57:38,828 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6097134870719776 [2022-12-13 18:57:38,828 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1745 transitions. [2022-12-13 18:57:38,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1745 transitions. [2022-12-13 18:57:38,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:57:38,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1745 transitions. [2022-12-13 18:57:38,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 290.8333333333333) internal successors, (1745), 6 states have internal predecessors, (1745), 0 states have call successors, (0), 0 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 18:57:38,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 477.0) internal successors, (3339), 7 states have internal predecessors, (3339), 0 states have call successors, (0), 0 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 18:57:38,835 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 477.0) internal successors, (3339), 7 states have internal predecessors, (3339), 0 states have call successors, (0), 0 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 18:57:38,835 INFO L175 Difference]: Start difference. First operand has 143 places, 130 transitions, 306 flow. Second operand 6 states and 1745 transitions. [2022-12-13 18:57:38,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 504 transitions, 2094 flow [2022-12-13 18:57:38,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 504 transitions, 2061 flow, removed 10 selfloop flow, removed 3 redundant places. [2022-12-13 18:57:38,967 INFO L231 Difference]: Finished difference. Result has 150 places, 268 transitions, 1245 flow [2022-12-13 18:57:38,968 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=477, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1245, PETRI_PLACES=150, PETRI_TRANSITIONS=268} [2022-12-13 18:57:38,968 INFO L288 CegarLoopForPetriNet]: 162 programPoint places, -12 predicate places. [2022-12-13 18:57:38,968 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 268 transitions, 1245 flow [2022-12-13 18:57:38,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 214.66666666666666) internal successors, (1288), 6 states have internal predecessors, (1288), 0 states have call successors, (0), 0 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 18:57:38,969 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:57:38,969 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-12-13 18:57:38,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 18:57:38,969 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-12-13 18:57:38,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:57:38,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1100477508, now seen corresponding path program 1 times [2022-12-13 18:57:38,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:57:38,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417258160] [2022-12-13 18:57:38,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:57:38,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:57:38,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:57:38,982 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:57:38,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:57:38,992 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:57:38,992 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 18:57:38,993 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2022-12-13 18:57:38,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (29 of 31 remaining) [2022-12-13 18:57:38,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (28 of 31 remaining) [2022-12-13 18:57:38,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (27 of 31 remaining) [2022-12-13 18:57:38,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (26 of 31 remaining) [2022-12-13 18:57:38,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (25 of 31 remaining) [2022-12-13 18:57:38,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (24 of 31 remaining) [2022-12-13 18:57:38,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (23 of 31 remaining) [2022-12-13 18:57:38,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (22 of 31 remaining) [2022-12-13 18:57:38,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (21 of 31 remaining) [2022-12-13 18:57:38,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (20 of 31 remaining) [2022-12-13 18:57:38,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (19 of 31 remaining) [2022-12-13 18:57:38,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (18 of 31 remaining) [2022-12-13 18:57:38,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 31 remaining) [2022-12-13 18:57:38,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (16 of 31 remaining) [2022-12-13 18:57:38,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (15 of 31 remaining) [2022-12-13 18:57:38,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 31 remaining) [2022-12-13 18:57:38,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (13 of 31 remaining) [2022-12-13 18:57:38,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (12 of 31 remaining) [2022-12-13 18:57:38,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 31 remaining) [2022-12-13 18:57:38,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 31 remaining) [2022-12-13 18:57:38,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 31 remaining) [2022-12-13 18:57:38,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 31 remaining) [2022-12-13 18:57:38,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 31 remaining) [2022-12-13 18:57:38,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 31 remaining) [2022-12-13 18:57:38,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 31 remaining) [2022-12-13 18:57:38,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 31 remaining) [2022-12-13 18:57:38,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 31 remaining) [2022-12-13 18:57:38,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 31 remaining) [2022-12-13 18:57:38,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 31 remaining) [2022-12-13 18:57:38,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 31 remaining) [2022-12-13 18:57:38,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 18:57:38,995 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-12-13 18:57:38,996 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 18:57:38,996 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-12-13 18:57:39,031 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 18:57:39,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 355 places, 379 transitions, 802 flow [2022-12-13 18:57:39,204 INFO L130 PetriNetUnfolder]: 81/850 cut-off events. [2022-12-13 18:57:39,204 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 18:57:39,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 905 conditions, 850 events. 81/850 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4092 event pairs, 6 based on Foata normal form. 0/716 useless extension candidates. Maximal degree in co-relation 585. Up to 32 conditions per place. [2022-12-13 18:57:39,211 INFO L82 GeneralOperation]: Start removeDead. Operand has 355 places, 379 transitions, 802 flow [2022-12-13 18:57:39,217 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 355 places, 379 transitions, 802 flow [2022-12-13 18:57:39,217 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:57:39,217 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 355 places, 379 transitions, 802 flow [2022-12-13 18:57:39,217 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 355 places, 379 transitions, 802 flow [2022-12-13 18:57:39,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 355 places, 379 transitions, 802 flow [2022-12-13 18:57:39,380 INFO L130 PetriNetUnfolder]: 81/850 cut-off events. [2022-12-13 18:57:39,380 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 18:57:39,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 905 conditions, 850 events. 81/850 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4092 event pairs, 6 based on Foata normal form. 0/716 useless extension candidates. Maximal degree in co-relation 585. Up to 32 conditions per place. [2022-12-13 18:57:39,434 INFO L119 LiptonReduction]: Number of co-enabled transitions 85800 [2022-12-13 18:57:42,404 INFO L134 LiptonReduction]: Checked pairs total: 609038 [2022-12-13 18:57:42,404 INFO L136 LiptonReduction]: Total number of compositions: 190 [2022-12-13 18:57:42,406 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:57:42,406 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;@2146ec4b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:57:42,406 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2022-12-13 18:57:42,406 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 18:57:42,406 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:57:42,406 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:57:42,406 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 18:57:42,406 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-12-13 18:57:42,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:57:42,407 INFO L85 PathProgramCache]: Analyzing trace with hash 2257, now seen corresponding path program 1 times [2022-12-13 18:57:42,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:57:42,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74047815] [2022-12-13 18:57:42,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:57:42,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:57:42,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:57:42,410 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 18:57:42,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:57:42,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74047815] [2022-12-13 18:57:42,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74047815] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:57:42,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:57:42,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 18:57:42,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615080496] [2022-12-13 18:57:42,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:57:42,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 18:57:42,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:57:42,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 18:57:42,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 18:57:42,412 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 341 out of 569 [2022-12-13 18:57:42,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 227 transitions, 498 flow. Second operand has 2 states, 2 states have (on average 341.5) internal successors, (683), 2 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 18:57:42,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:57:42,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 341 of 569 [2022-12-13 18:57:42,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand