./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 6b4ec56b 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_cf9bdcd9-b9f0-470e-a5b6-c1c481d2fb9f/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9bdcd9-b9f0-470e-a5b6-c1c481d2fb9f/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9bdcd9-b9f0-470e-a5b6-c1c481d2fb9f/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9bdcd9-b9f0-470e-a5b6-c1c481d2fb9f/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9bdcd9-b9f0-470e-a5b6-c1c481d2fb9f/bin/uautomizer-ug76WZFUDN/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9bdcd9-b9f0-470e-a5b6-c1c481d2fb9f/bin/uautomizer-ug76WZFUDN --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 9556b3eb7217f056a72a299bf0514e64606a248fa454b59dcc03e4a2e74c7c90 --- 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-6b4ec56 [2022-11-20 12:40:07,073 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:40:07,076 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:40:07,116 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:40:07,117 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:40:07,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:40:07,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:40:07,122 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:40:07,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:40:07,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:40:07,130 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:40:07,131 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:40:07,132 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:40:07,133 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:40:07,134 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:40:07,136 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:40:07,137 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:40:07,138 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:40:07,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:40:07,147 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:40:07,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:40:07,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:40:07,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:40:07,160 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:40:07,164 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:40:07,169 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:40:07,170 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:40:07,171 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:40:07,172 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:40:07,174 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:40:07,176 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:40:07,177 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:40:07,179 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:40:07,181 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:40:07,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:40:07,183 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:40:07,184 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:40:07,185 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:40:07,185 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:40:07,188 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:40:07,189 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:40:07,190 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9bdcd9-b9f0-470e-a5b6-c1c481d2fb9f/bin/uautomizer-ug76WZFUDN/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-20 12:40:07,219 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:40:07,219 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:40:07,219 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:40:07,220 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:40:07,220 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:40:07,221 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:40:07,221 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:40:07,222 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:40:07,222 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:40:07,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:40:07,222 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:40:07,223 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:40:07,223 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:40:07,223 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:40:07,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:40:07,224 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:40:07,224 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:40:07,224 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:40:07,224 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-20 12:40:07,224 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:40:07,225 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:40:07,225 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:40:07,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:40:07,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:40:07,226 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:40:07,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:40:07,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:40:07,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:40:07,227 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:40:07,227 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:40:07,227 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:40:07,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:40:07,228 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:40:07,228 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:40:07,228 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:40:07,228 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9bdcd9-b9f0-470e-a5b6-c1c481d2fb9f/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9bdcd9-b9f0-470e-a5b6-c1c481d2fb9f/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9556b3eb7217f056a72a299bf0514e64606a248fa454b59dcc03e4a2e74c7c90 [2022-11-20 12:40:07,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:40:07,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:40:07,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:40:07,566 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:40:07,567 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:40:07,568 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9bdcd9-b9f0-470e-a5b6-c1c481d2fb9f/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i [2022-11-20 12:40:11,195 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:40:11,667 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:40:11,667 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9bdcd9-b9f0-470e-a5b6-c1c481d2fb9f/sv-benchmarks/c/pthread/singleton_with-uninit-problems.i [2022-11-20 12:40:11,694 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9bdcd9-b9f0-470e-a5b6-c1c481d2fb9f/bin/uautomizer-ug76WZFUDN/data/586ceb801/fb2ad188adf0478f8560bad9accba933/FLAG3bcd788b6 [2022-11-20 12:40:11,723 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9bdcd9-b9f0-470e-a5b6-c1c481d2fb9f/bin/uautomizer-ug76WZFUDN/data/586ceb801/fb2ad188adf0478f8560bad9accba933 [2022-11-20 12:40:11,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:40:11,730 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:40:11,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:40:11,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:40:11,742 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:40:11,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:40:11" (1/1) ... [2022-11-20 12:40:11,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6534b70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:11, skipping insertion in model container [2022-11-20 12:40:11,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:40:11" (1/1) ... [2022-11-20 12:40:11,756 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:40:11,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:40:12,047 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-20 12:40:12,509 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_cf9bdcd9-b9f0-470e-a5b6-c1c481d2fb9f/sv-benchmarks/c/pthread/singleton_with-uninit-problems.i[55568,55581] [2022-11-20 12:40:12,563 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:40:12,578 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:40:12,614 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-20 12:40:12,637 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_cf9bdcd9-b9f0-470e-a5b6-c1c481d2fb9f/sv-benchmarks/c/pthread/singleton_with-uninit-problems.i[55568,55581] [2022-11-20 12:40:12,652 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:40:12,745 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:40:12,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:12 WrapperNode [2022-11-20 12:40:12,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:40:12,748 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:40:12,748 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:40:12,749 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:40:12,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:12" (1/1) ... [2022-11-20 12:40:12,797 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:12" (1/1) ... [2022-11-20 12:40:12,850 INFO L138 Inliner]: procedures = 325, calls = 53, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54 [2022-11-20 12:40:12,851 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:40:12,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:40:12,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:40:12,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:40:12,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:12" (1/1) ... [2022-11-20 12:40:12,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:12" (1/1) ... [2022-11-20 12:40:12,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:12" (1/1) ... [2022-11-20 12:40:12,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:12" (1/1) ... [2022-11-20 12:40:12,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:12" (1/1) ... [2022-11-20 12:40:12,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:12" (1/1) ... [2022-11-20 12:40:12,916 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:12" (1/1) ... [2022-11-20 12:40:12,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:12" (1/1) ... [2022-11-20 12:40:12,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:40:12,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:40:12,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:40:12,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:40:12,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:12" (1/1) ... [2022-11-20 12:40:12,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:40:12,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9bdcd9-b9f0-470e-a5b6-c1c481d2fb9f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:40:12,989 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9bdcd9-b9f0-470e-a5b6-c1c481d2fb9f/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:40:13,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9bdcd9-b9f0-470e-a5b6-c1c481d2fb9f/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:40:13,046 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 12:40:13,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:40:13,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:40:13,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 12:40:13,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:40:13,048 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2022-11-20 12:40:13,048 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2022-11-20 12:40:13,049 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 12:40:13,049 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 12:40:13,049 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 12:40:13,049 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 12:40:13,049 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 12:40:13,050 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 12:40:13,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:40:13,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:40:13,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:40:13,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:40:13,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:40:13,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:40:13,054 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 12:40:13,273 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:40:13,276 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:40:13,726 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:40:13,809 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:40:13,809 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 12:40:13,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:40:13 BoogieIcfgContainer [2022-11-20 12:40:13,812 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:40:13,822 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:40:13,822 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:40:13,826 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:40:13,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:40:11" (1/3) ... [2022-11-20 12:40:13,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac73707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:40:13, skipping insertion in model container [2022-11-20 12:40:13,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:12" (2/3) ... [2022-11-20 12:40:13,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac73707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:40:13, skipping insertion in model container [2022-11-20 12:40:13,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:40:13" (3/3) ... [2022-11-20 12:40:13,829 INFO L112 eAbstractionObserver]: Analyzing ICFG singleton_with-uninit-problems.i [2022-11-20 12:40:13,840 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:40:13,853 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:40:13,854 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2022-11-20 12:40:13,854 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:40:14,138 INFO L144 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2022-11-20 12:40:14,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 294 places, 285 transitions, 677 flow [2022-11-20 12:40:14,357 INFO L130 PetriNetUnfolder]: 7/198 cut-off events. [2022-11-20 12:40:14,357 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-20 12:40:14,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 198 events. 7/198 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 135 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 165. Up to 3 conditions per place. [2022-11-20 12:40:14,366 INFO L82 GeneralOperation]: Start removeDead. Operand has 294 places, 285 transitions, 677 flow [2022-11-20 12:40:14,403 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 177 transitions, 405 flow [2022-11-20 12:40:14,420 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:40:14,428 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;@2ed0bfdb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:40:14,429 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2022-11-20 12:40:14,439 INFO L130 PetriNetUnfolder]: 0/33 cut-off events. [2022-11-20 12:40:14,439 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:40:14,439 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:40:14,440 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:40:14,441 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2022-11-20 12:40:14,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:40:14,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1196575310, now seen corresponding path program 1 times [2022-11-20 12:40:14,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:40:14,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565522537] [2022-11-20 12:40:14,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:40:14,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:40:14,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:40:15,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:40:15,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:40:15,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565522537] [2022-11-20 12:40:15,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565522537] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:40:15,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:40:15,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:40:15,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080054855] [2022-11-20 12:40:15,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:40:15,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:40:15,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:40:15,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:40:15,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:40:15,565 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 287 [2022-11-20 12:40:15,574 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 177 transitions, 405 flow. Second operand has 6 states, 6 states have (on average 171.66666666666666) internal successors, (1030), 6 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:15,574 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:40:15,574 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 287 [2022-11-20 12:40:15,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:40:19,441 INFO L130 PetriNetUnfolder]: 6956/10930 cut-off events. [2022-11-20 12:40:19,441 INFO L131 PetriNetUnfolder]: For 553/580 co-relation queries the response was YES. [2022-11-20 12:40:19,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21601 conditions, 10930 events. 6956/10930 cut-off events. For 553/580 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 66468 event pairs, 3015 based on Foata normal form. 8/10037 useless extension candidates. Maximal degree in co-relation 21521. Up to 7339 conditions per place. [2022-11-20 12:40:19,589 INFO L137 encePairwiseOnDemand]: 269/287 looper letters, 251 selfloop transitions, 21 changer transitions 0/375 dead transitions. [2022-11-20 12:40:19,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 375 transitions, 1528 flow [2022-11-20 12:40:19,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:40:19,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:40:19,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1333 transitions. [2022-11-20 12:40:19,613 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7740998838559814 [2022-11-20 12:40:19,614 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1333 transitions. [2022-11-20 12:40:19,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1333 transitions. [2022-11-20 12:40:19,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:40:19,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1333 transitions. [2022-11-20 12:40:19,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 222.16666666666666) internal successors, (1333), 6 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:19,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 287.0) internal successors, (2009), 7 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:19,643 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 287.0) internal successors, (2009), 7 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:19,645 INFO L175 Difference]: Start difference. First operand has 191 places, 177 transitions, 405 flow. Second operand 6 states and 1333 transitions. [2022-11-20 12:40:19,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 375 transitions, 1528 flow [2022-11-20 12:40:19,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 375 transitions, 1372 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-11-20 12:40:19,682 INFO L231 Difference]: Finished difference. Result has 181 places, 189 transitions, 497 flow [2022-11-20 12:40:19,685 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=497, PETRI_PLACES=181, PETRI_TRANSITIONS=189} [2022-11-20 12:40:19,690 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, -10 predicate places. [2022-11-20 12:40:19,690 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 189 transitions, 497 flow [2022-11-20 12:40:19,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 171.66666666666666) internal successors, (1030), 6 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:19,691 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:40:19,691 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:40:19,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:40:19,692 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2022-11-20 12:40:19,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:40:19,693 INFO L85 PathProgramCache]: Analyzing trace with hash 947714976, now seen corresponding path program 1 times [2022-11-20 12:40:19,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:40:19,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712401847] [2022-11-20 12:40:19,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:40:19,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:40:19,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:40:19,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:40:19,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:40:19,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712401847] [2022-11-20 12:40:19,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712401847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:40:19,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:40:19,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:40:19,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173774259] [2022-11-20 12:40:19,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:40:19,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:40:19,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:40:19,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:40:19,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:40:19,806 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 287 [2022-11-20 12:40:19,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 189 transitions, 497 flow. Second operand has 3 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:19,808 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:40:19,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 287 [2022-11-20 12:40:19,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:40:20,402 INFO L130 PetriNetUnfolder]: 777/2173 cut-off events. [2022-11-20 12:40:20,402 INFO L131 PetriNetUnfolder]: For 1115/1300 co-relation queries the response was YES. [2022-11-20 12:40:20,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4673 conditions, 2173 events. 777/2173 cut-off events. For 1115/1300 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 13828 event pairs, 306 based on Foata normal form. 0/1981 useless extension candidates. Maximal degree in co-relation 2975. Up to 947 conditions per place. [2022-11-20 12:40:20,432 INFO L137 encePairwiseOnDemand]: 284/287 looper letters, 45 selfloop transitions, 2 changer transitions 0/188 dead transitions. [2022-11-20 12:40:20,432 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 188 transitions, 589 flow [2022-11-20 12:40:20,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:40:20,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:40:20,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 725 transitions. [2022-11-20 12:40:20,435 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8420441347270615 [2022-11-20 12:40:20,436 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 725 transitions. [2022-11-20 12:40:20,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 725 transitions. [2022-11-20 12:40:20,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:40:20,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 725 transitions. [2022-11-20 12:40:20,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:20,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:20,442 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:20,442 INFO L175 Difference]: Start difference. First operand has 181 places, 189 transitions, 497 flow. Second operand 3 states and 725 transitions. [2022-11-20 12:40:20,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 188 transitions, 589 flow [2022-11-20 12:40:20,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 188 transitions, 589 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:40:20,452 INFO L231 Difference]: Finished difference. Result has 182 places, 188 transitions, 499 flow [2022-11-20 12:40:20,453 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=499, PETRI_PLACES=182, PETRI_TRANSITIONS=188} [2022-11-20 12:40:20,453 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, -9 predicate places. [2022-11-20 12:40:20,454 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 188 transitions, 499 flow [2022-11-20 12:40:20,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:20,455 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:40:20,455 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:40:20,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:40:20,455 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread0Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2022-11-20 12:40:20,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:40:20,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1507116799, now seen corresponding path program 1 times [2022-11-20 12:40:20,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:40:20,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60115976] [2022-11-20 12:40:20,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:40:20,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:40:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:40:20,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:40:20,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:40:20,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60115976] [2022-11-20 12:40:20,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60115976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:40:20,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:40:20,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:40:20,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485493647] [2022-11-20 12:40:20,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:40:20,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:40:20,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:40:20,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:40:20,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:40:20,872 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 287 [2022-11-20 12:40:20,874 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 188 transitions, 499 flow. Second operand has 6 states, 6 states have (on average 172.66666666666666) internal successors, (1036), 6 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:20,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:40:20,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 287 [2022-11-20 12:40:20,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:40:23,625 INFO L130 PetriNetUnfolder]: 6392/11315 cut-off events. [2022-11-20 12:40:23,626 INFO L131 PetriNetUnfolder]: For 6232/6268 co-relation queries the response was YES. [2022-11-20 12:40:23,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29992 conditions, 11315 events. 6392/11315 cut-off events. For 6232/6268 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 76571 event pairs, 1683 based on Foata normal form. 24/10733 useless extension candidates. Maximal degree in co-relation 24960. Up to 8953 conditions per place. [2022-11-20 12:40:23,768 INFO L137 encePairwiseOnDemand]: 278/287 looper letters, 111 selfloop transitions, 24 changer transitions 0/236 dead transitions. [2022-11-20 12:40:23,768 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 236 transitions, 1012 flow [2022-11-20 12:40:23,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:40:23,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:40:23,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1126 transitions. [2022-11-20 12:40:23,772 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6538908246225319 [2022-11-20 12:40:23,772 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1126 transitions. [2022-11-20 12:40:23,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1126 transitions. [2022-11-20 12:40:23,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:40:23,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1126 transitions. [2022-11-20 12:40:23,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 187.66666666666666) internal successors, (1126), 6 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:23,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 287.0) internal successors, (2009), 7 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:23,783 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 287.0) internal successors, (2009), 7 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:23,783 INFO L175 Difference]: Start difference. First operand has 182 places, 188 transitions, 499 flow. Second operand 6 states and 1126 transitions. [2022-11-20 12:40:23,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 236 transitions, 1012 flow [2022-11-20 12:40:23,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 236 transitions, 1008 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:40:23,838 INFO L231 Difference]: Finished difference. Result has 185 places, 207 transitions, 714 flow [2022-11-20 12:40:23,838 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=714, PETRI_PLACES=185, PETRI_TRANSITIONS=207} [2022-11-20 12:40:23,841 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, -6 predicate places. [2022-11-20 12:40:23,842 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 207 transitions, 714 flow [2022-11-20 12:40:23,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 172.66666666666666) internal successors, (1036), 6 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:23,843 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:40:23,843 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:40:23,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:40:23,844 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2022-11-20 12:40:23,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:40:23,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1431957031, now seen corresponding path program 1 times [2022-11-20 12:40:23,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:40:23,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307229069] [2022-11-20 12:40:23,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:40:23,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:40:23,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:40:25,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:40:25,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:40:25,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307229069] [2022-11-20 12:40:25,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307229069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:40:25,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:40:25,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 12:40:25,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753620620] [2022-11-20 12:40:25,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:40:25,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:40:25,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:40:25,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:40:25,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:40:25,284 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 287 [2022-11-20 12:40:25,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 207 transitions, 714 flow. Second operand has 12 states, 12 states have (on average 144.83333333333334) internal successors, (1738), 12 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:25,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:40:25,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 287 [2022-11-20 12:40:25,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:40:31,431 INFO L130 PetriNetUnfolder]: 9736/16194 cut-off events. [2022-11-20 12:40:31,431 INFO L131 PetriNetUnfolder]: For 21265/21290 co-relation queries the response was YES. [2022-11-20 12:40:31,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51238 conditions, 16194 events. 9736/16194 cut-off events. For 21265/21290 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 105808 event pairs, 3520 based on Foata normal form. 238/15431 useless extension candidates. Maximal degree in co-relation 25681. Up to 7720 conditions per place. [2022-11-20 12:40:31,694 INFO L137 encePairwiseOnDemand]: 269/287 looper letters, 493 selfloop transitions, 92 changer transitions 0/664 dead transitions. [2022-11-20 12:40:31,695 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 664 transitions, 3427 flow [2022-11-20 12:40:31,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 12:40:31,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 12:40:31,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3079 transitions. [2022-11-20 12:40:31,707 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5960123886953155 [2022-11-20 12:40:31,707 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3079 transitions. [2022-11-20 12:40:31,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3079 transitions. [2022-11-20 12:40:31,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:40:31,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3079 transitions. [2022-11-20 12:40:31,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.05555555555554) internal successors, (3079), 18 states have internal predecessors, (3079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:31,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 287.0) internal successors, (5453), 19 states have internal predecessors, (5453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:31,732 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 287.0) internal successors, (5453), 19 states have internal predecessors, (5453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:31,732 INFO L175 Difference]: Start difference. First operand has 185 places, 207 transitions, 714 flow. Second operand 18 states and 3079 transitions. [2022-11-20 12:40:31,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 664 transitions, 3427 flow [2022-11-20 12:40:31,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 664 transitions, 3276 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:40:31,876 INFO L231 Difference]: Finished difference. Result has 213 places, 278 transitions, 1580 flow [2022-11-20 12:40:31,877 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=687, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1580, PETRI_PLACES=213, PETRI_TRANSITIONS=278} [2022-11-20 12:40:31,878 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 22 predicate places. [2022-11-20 12:40:31,878 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 278 transitions, 1580 flow [2022-11-20 12:40:31,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 144.83333333333334) internal successors, (1738), 12 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:31,879 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:40:31,879 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:40:31,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:40:31,880 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2022-11-20 12:40:31,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:40:31,881 INFO L85 PathProgramCache]: Analyzing trace with hash -993946001, now seen corresponding path program 2 times [2022-11-20 12:40:31,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:40:31,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050104868] [2022-11-20 12:40:31,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:40:31,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:40:31,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:40:32,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:40:32,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:40:32,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050104868] [2022-11-20 12:40:32,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050104868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:40:32,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:40:32,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 12:40:32,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081688669] [2022-11-20 12:40:32,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:40:32,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:40:32,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:40:32,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:40:32,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:40:32,474 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 287 [2022-11-20 12:40:32,476 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 278 transitions, 1580 flow. Second operand has 10 states, 10 states have (on average 160.9) internal successors, (1609), 10 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:32,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:40:32,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 287 [2022-11-20 12:40:32,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:40:38,541 INFO L130 PetriNetUnfolder]: 11963/20700 cut-off events. [2022-11-20 12:40:38,541 INFO L131 PetriNetUnfolder]: For 51240/51286 co-relation queries the response was YES. [2022-11-20 12:40:38,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72096 conditions, 20700 events. 11963/20700 cut-off events. For 51240/51286 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 144722 event pairs, 4135 based on Foata normal form. 247/19695 useless extension candidates. Maximal degree in co-relation 68846. Up to 7595 conditions per place. [2022-11-20 12:40:38,763 INFO L137 encePairwiseOnDemand]: 277/287 looper letters, 453 selfloop transitions, 45 changer transitions 0/594 dead transitions. [2022-11-20 12:40:38,763 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 594 transitions, 3898 flow [2022-11-20 12:40:38,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 12:40:38,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-20 12:40:38,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2877 transitions. [2022-11-20 12:40:38,771 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6265243902439024 [2022-11-20 12:40:38,772 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2877 transitions. [2022-11-20 12:40:38,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2877 transitions. [2022-11-20 12:40:38,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:40:38,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2877 transitions. [2022-11-20 12:40:38,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 179.8125) internal successors, (2877), 16 states have internal predecessors, (2877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:38,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 287.0) internal successors, (4879), 17 states have internal predecessors, (4879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:38,793 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 287.0) internal successors, (4879), 17 states have internal predecessors, (4879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:38,793 INFO L175 Difference]: Start difference. First operand has 213 places, 278 transitions, 1580 flow. Second operand 16 states and 2877 transitions. [2022-11-20 12:40:38,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 594 transitions, 3898 flow [2022-11-20 12:40:39,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 594 transitions, 3878 flow, removed 10 selfloop flow, removed 0 redundant places. [2022-11-20 12:40:39,199 INFO L231 Difference]: Finished difference. Result has 237 places, 310 transitions, 1976 flow [2022-11-20 12:40:39,200 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=1576, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1976, PETRI_PLACES=237, PETRI_TRANSITIONS=310} [2022-11-20 12:40:39,201 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 46 predicate places. [2022-11-20 12:40:39,201 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 310 transitions, 1976 flow [2022-11-20 12:40:39,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 160.9) internal successors, (1609), 10 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:39,202 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:40:39,203 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:40:39,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:40:39,203 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2022-11-20 12:40:39,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:40:39,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1294752337, now seen corresponding path program 3 times [2022-11-20 12:40:39,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:40:39,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870311323] [2022-11-20 12:40:39,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:40:39,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:40:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:40:40,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:40:40,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:40:40,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870311323] [2022-11-20 12:40:40,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870311323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:40:40,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:40:40,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 12:40:40,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80473211] [2022-11-20 12:40:40,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:40:40,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:40:40,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:40:40,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:40:40,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:40:40,480 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 287 [2022-11-20 12:40:40,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 310 transitions, 1976 flow. Second operand has 12 states, 12 states have (on average 144.83333333333334) internal successors, (1738), 12 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:40,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:40:40,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 287 [2022-11-20 12:40:40,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:40:48,175 INFO L130 PetriNetUnfolder]: 13882/23994 cut-off events. [2022-11-20 12:40:48,175 INFO L131 PetriNetUnfolder]: For 87248/87339 co-relation queries the response was YES. [2022-11-20 12:40:48,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91340 conditions, 23994 events. 13882/23994 cut-off events. For 87248/87339 co-relation queries the response was YES. Maximal size of possible extension queue 682. Compared 171718 event pairs, 5122 based on Foata normal form. 273/22790 useless extension candidates. Maximal degree in co-relation 87759. Up to 12873 conditions per place. [2022-11-20 12:40:48,454 INFO L137 encePairwiseOnDemand]: 270/287 looper letters, 504 selfloop transitions, 117 changer transitions 0/700 dead transitions. [2022-11-20 12:40:48,454 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 700 transitions, 4884 flow [2022-11-20 12:40:48,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:40:48,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 12:40:48,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2571 transitions. [2022-11-20 12:40:48,464 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.597212543554007 [2022-11-20 12:40:48,465 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2571 transitions. [2022-11-20 12:40:48,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2571 transitions. [2022-11-20 12:40:48,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:40:48,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2571 transitions. [2022-11-20 12:40:48,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 171.4) internal successors, (2571), 15 states have internal predecessors, (2571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:48,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 287.0) internal successors, (4592), 16 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:48,485 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 287.0) internal successors, (4592), 16 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:48,486 INFO L175 Difference]: Start difference. First operand has 237 places, 310 transitions, 1976 flow. Second operand 15 states and 2571 transitions. [2022-11-20 12:40:48,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 700 transitions, 4884 flow [2022-11-20 12:40:49,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 700 transitions, 4787 flow, removed 38 selfloop flow, removed 2 redundant places. [2022-11-20 12:40:49,288 INFO L231 Difference]: Finished difference. Result has 261 places, 367 transitions, 3024 flow [2022-11-20 12:40:49,289 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=1930, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3024, PETRI_PLACES=261, PETRI_TRANSITIONS=367} [2022-11-20 12:40:49,290 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 70 predicate places. [2022-11-20 12:40:49,290 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 367 transitions, 3024 flow [2022-11-20 12:40:49,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 144.83333333333334) internal successors, (1738), 12 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:49,291 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:40:49,291 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:40:49,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:40:49,292 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2022-11-20 12:40:49,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:40:49,292 INFO L85 PathProgramCache]: Analyzing trace with hash 18769545, now seen corresponding path program 4 times [2022-11-20 12:40:49,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:40:49,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288468817] [2022-11-20 12:40:49,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:40:49,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:40:49,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:40:50,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:40:50,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:40:50,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288468817] [2022-11-20 12:40:50,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288468817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:40:50,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:40:50,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 12:40:50,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481812676] [2022-11-20 12:40:50,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:40:50,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:40:50,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:40:50,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:40:50,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:40:50,112 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 287 [2022-11-20 12:40:50,114 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 367 transitions, 3024 flow. Second operand has 10 states, 10 states have (on average 160.9) internal successors, (1609), 10 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:50,114 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:40:50,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 287 [2022-11-20 12:40:50,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:41:00,322 INFO L130 PetriNetUnfolder]: 19927/34727 cut-off events. [2022-11-20 12:41:00,322 INFO L131 PetriNetUnfolder]: For 192180/192303 co-relation queries the response was YES. [2022-11-20 12:41:00,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140286 conditions, 34727 events. 19927/34727 cut-off events. For 192180/192303 co-relation queries the response was YES. Maximal size of possible extension queue 1093. Compared 268597 event pairs, 9357 based on Foata normal form. 293/32742 useless extension candidates. Maximal degree in co-relation 139623. Up to 16103 conditions per place. [2022-11-20 12:41:01,053 INFO L137 encePairwiseOnDemand]: 273/287 looper letters, 542 selfloop transitions, 108 changer transitions 0/757 dead transitions. [2022-11-20 12:41:01,053 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 757 transitions, 6515 flow [2022-11-20 12:41:01,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:41:01,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 12:41:01,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2774 transitions. [2022-11-20 12:41:01,063 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6443670150987224 [2022-11-20 12:41:01,063 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2774 transitions. [2022-11-20 12:41:01,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2774 transitions. [2022-11-20 12:41:01,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:41:01,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2774 transitions. [2022-11-20 12:41:01,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 184.93333333333334) internal successors, (2774), 15 states have internal predecessors, (2774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:01,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 287.0) internal successors, (4592), 16 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:01,085 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 287.0) internal successors, (4592), 16 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:01,085 INFO L175 Difference]: Start difference. First operand has 261 places, 367 transitions, 3024 flow. Second operand 15 states and 2774 transitions. [2022-11-20 12:41:01,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 757 transitions, 6515 flow [2022-11-20 12:41:02,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 757 transitions, 6314 flow, removed 35 selfloop flow, removed 2 redundant places. [2022-11-20 12:41:02,029 INFO L231 Difference]: Finished difference. Result has 283 places, 419 transitions, 3998 flow [2022-11-20 12:41:02,029 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=2916, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3998, PETRI_PLACES=283, PETRI_TRANSITIONS=419} [2022-11-20 12:41:02,030 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 92 predicate places. [2022-11-20 12:41:02,030 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 419 transitions, 3998 flow [2022-11-20 12:41:02,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 160.9) internal successors, (1609), 10 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:02,032 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:41:02,032 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:41:02,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:41:02,032 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2022-11-20 12:41:02,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:41:02,033 INFO L85 PathProgramCache]: Analyzing trace with hash -44735823, now seen corresponding path program 5 times [2022-11-20 12:41:02,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:41:02,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708867753] [2022-11-20 12:41:02,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:41:02,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:41:02,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:41:02,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:41:02,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:41:02,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708867753] [2022-11-20 12:41:02,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708867753] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:41:02,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:41:02,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 12:41:02,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125032782] [2022-11-20 12:41:02,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:41:02,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:41:02,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:41:02,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:41:02,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:41:02,902 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 287 [2022-11-20 12:41:02,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 419 transitions, 3998 flow. Second operand has 12 states, 12 states have (on average 144.83333333333334) internal successors, (1738), 12 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:02,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:41:02,907 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 287 [2022-11-20 12:41:02,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:41:17,530 INFO L130 PetriNetUnfolder]: 25833/45016 cut-off events. [2022-11-20 12:41:17,530 INFO L131 PetriNetUnfolder]: For 254072/254333 co-relation queries the response was YES. [2022-11-20 12:41:17,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186280 conditions, 45016 events. 25833/45016 cut-off events. For 254072/254333 co-relation queries the response was YES. Maximal size of possible extension queue 1406. Compared 364089 event pairs, 10723 based on Foata normal form. 388/42540 useless extension candidates. Maximal degree in co-relation 184546. Up to 20119 conditions per place. [2022-11-20 12:41:18,050 INFO L137 encePairwiseOnDemand]: 270/287 looper letters, 637 selfloop transitions, 184 changer transitions 0/900 dead transitions. [2022-11-20 12:41:18,050 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 900 transitions, 8206 flow [2022-11-20 12:41:18,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 12:41:18,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-20 12:41:18,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3355 transitions. [2022-11-20 12:41:18,061 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5844947735191638 [2022-11-20 12:41:18,061 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3355 transitions. [2022-11-20 12:41:18,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3355 transitions. [2022-11-20 12:41:18,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:41:18,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3355 transitions. [2022-11-20 12:41:18,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 167.75) internal successors, (3355), 20 states have internal predecessors, (3355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:18,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 287.0) internal successors, (6027), 21 states have internal predecessors, (6027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:18,087 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 287.0) internal successors, (6027), 21 states have internal predecessors, (6027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:18,087 INFO L175 Difference]: Start difference. First operand has 283 places, 419 transitions, 3998 flow. Second operand 20 states and 3355 transitions. [2022-11-20 12:41:18,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 900 transitions, 8206 flow [2022-11-20 12:41:20,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 900 transitions, 8139 flow, removed 33 selfloop flow, removed 1 redundant places. [2022-11-20 12:41:21,001 INFO L231 Difference]: Finished difference. Result has 317 places, 489 transitions, 5653 flow [2022-11-20 12:41:21,002 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=3943, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=5653, PETRI_PLACES=317, PETRI_TRANSITIONS=489} [2022-11-20 12:41:21,003 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 126 predicate places. [2022-11-20 12:41:21,003 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 489 transitions, 5653 flow [2022-11-20 12:41:21,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 144.83333333333334) internal successors, (1738), 12 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:21,004 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:41:21,004 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:41:21,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:41:21,005 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2022-11-20 12:41:21,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:41:21,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1824284082, now seen corresponding path program 1 times [2022-11-20 12:41:21,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:41:21,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59296078] [2022-11-20 12:41:21,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:41:21,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:41:21,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:41:21,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:41:21,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:41:21,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59296078] [2022-11-20 12:41:21,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59296078] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:41:21,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:41:21,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 12:41:21,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8996078] [2022-11-20 12:41:21,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:41:21,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:41:21,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:41:21,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:41:21,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:41:21,557 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 287 [2022-11-20 12:41:21,558 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 489 transitions, 5653 flow. Second operand has 10 states, 10 states have (on average 160.9) internal successors, (1609), 10 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:21,558 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:41:21,558 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 287 [2022-11-20 12:41:21,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand