./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f5c43f-4098-4d6d-8cdd-82d60980ebaa/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f5c43f-4098-4d6d-8cdd-82d60980ebaa/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f5c43f-4098-4d6d-8cdd-82d60980ebaa/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f5c43f-4098-4d6d-8cdd-82d60980ebaa/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f5c43f-4098-4d6d-8cdd-82d60980ebaa/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f5c43f-4098-4d6d-8cdd-82d60980ebaa/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 20:13:38,791 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:13:38,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:13:38,806 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:13:38,806 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:13:38,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:13:38,808 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:13:38,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:13:38,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:13:38,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:13:38,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:13:38,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:13:38,812 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:13:38,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:13:38,814 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:13:38,815 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:13:38,815 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:13:38,816 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:13:38,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:13:38,818 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:13:38,819 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:13:38,820 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:13:38,821 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:13:38,822 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:13:38,824 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:13:38,825 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:13:38,825 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:13:38,826 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:13:38,826 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:13:38,827 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:13:38,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:13:38,827 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:13:38,828 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:13:38,828 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:13:38,829 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:13:38,829 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:13:38,830 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:13:38,830 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:13:38,830 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:13:38,831 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:13:38,831 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:13:38,832 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f5c43f-4098-4d6d-8cdd-82d60980ebaa/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-12-13 20:13:38,847 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:13:38,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:13:38,848 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:13:38,848 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:13:38,848 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:13:38,848 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:13:38,849 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:13:38,849 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:13:38,849 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:13:38,849 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:13:38,849 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:13:38,850 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 20:13:38,850 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:13:38,850 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:13:38,850 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:13:38,850 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 20:13:38,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:13:38,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 20:13:38,850 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-13 20:13:38,850 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:13:38,851 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 20:13:38,851 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:13:38,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 20:13:38,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:13:38,851 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:13:38,851 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:13:38,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:13:38,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:13:38,852 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:13:38,852 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 20:13:38,852 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:13:38,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 20:13:38,852 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:13:38,852 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 20:13:38,852 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:13:38,852 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:13:38,852 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:13:38,852 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f5c43f-4098-4d6d-8cdd-82d60980ebaa/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f5c43f-4098-4d6d-8cdd-82d60980ebaa/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 [2022-12-13 20:13:39,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:13:39,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:13:39,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:13:39,085 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:13:39,086 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:13:39,087 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f5c43f-4098-4d6d-8cdd-82d60980ebaa/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i [2022-12-13 20:13:41,602 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:13:41,802 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:13:41,802 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f5c43f-4098-4d6d-8cdd-82d60980ebaa/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i [2022-12-13 20:13:41,811 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f5c43f-4098-4d6d-8cdd-82d60980ebaa/bin/uautomizer-uyxdKDjOR8/data/c2020d7fa/0a0a8d59add543a4a8e165a1e531f82a/FLAG0ad54ce44 [2022-12-13 20:13:41,822 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f5c43f-4098-4d6d-8cdd-82d60980ebaa/bin/uautomizer-uyxdKDjOR8/data/c2020d7fa/0a0a8d59add543a4a8e165a1e531f82a [2022-12-13 20:13:41,824 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:13:41,826 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:13:41,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:13:41,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:13:41,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:13:41,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:13:41" (1/1) ... [2022-12-13 20:13:41,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@528647ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:13:41, skipping insertion in model container [2022-12-13 20:13:41,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:13:41" (1/1) ... [2022-12-13 20:13:41,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:13:41,864 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:13:42,150 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_e8f5c43f-4098-4d6d-8cdd-82d60980ebaa/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i[41322,41335] [2022-12-13 20:13:42,167 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:13:42,176 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:13:42,198 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_e8f5c43f-4098-4d6d-8cdd-82d60980ebaa/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i[41322,41335] [2022-12-13 20:13:42,204 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:13:42,237 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:13:42,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:13:42 WrapperNode [2022-12-13 20:13:42,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:13:42,238 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:13:42,238 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:13:42,238 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:13:42,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:13:42" (1/1) ... [2022-12-13 20:13:42,255 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:13:42" (1/1) ... [2022-12-13 20:13:42,270 INFO L138 Inliner]: procedures = 270, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 96 [2022-12-13 20:13:42,271 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:13:42,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:13:42,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:13:42,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:13:42,279 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:13:42" (1/1) ... [2022-12-13 20:13:42,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:13:42" (1/1) ... [2022-12-13 20:13:42,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:13:42" (1/1) ... [2022-12-13 20:13:42,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:13:42" (1/1) ... [2022-12-13 20:13:42,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:13:42" (1/1) ... [2022-12-13 20:13:42,289 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:13:42" (1/1) ... [2022-12-13 20:13:42,291 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:13:42" (1/1) ... [2022-12-13 20:13:42,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:13:42" (1/1) ... [2022-12-13 20:13:42,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:13:42,294 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:13:42,294 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:13:42,294 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:13:42,295 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:13:42" (1/1) ... [2022-12-13 20:13:42,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:13:42,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f5c43f-4098-4d6d-8cdd-82d60980ebaa/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:13:42,324 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f5c43f-4098-4d6d-8cdd-82d60980ebaa/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:13:42,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f5c43f-4098-4d6d-8cdd-82d60980ebaa/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:13:42,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 20:13:42,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 20:13:42,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 20:13:42,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 20:13:42,369 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 20:13:42,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:13:42,369 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 20:13:42,369 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 20:13:42,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 20:13:42,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:13:42,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:13:42,371 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 20:13:42,496 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:13:42,498 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:13:42,705 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:13:42,713 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:13:42,713 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-12-13 20:13:42,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:13:42 BoogieIcfgContainer [2022-12-13 20:13:42,715 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:13:42,717 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:13:42,717 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:13:42,720 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:13:42,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:13:41" (1/3) ... [2022-12-13 20:13:42,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@234792a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:13:42, skipping insertion in model container [2022-12-13 20:13:42,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:13:42" (2/3) ... [2022-12-13 20:13:42,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@234792a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:13:42, skipping insertion in model container [2022-12-13 20:13:42,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:13:42" (3/3) ... [2022-12-13 20:13:42,724 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_08-cond_racefree.i [2022-12-13 20:13:42,733 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 20:13:42,744 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:13:42,744 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-13 20:13:42,745 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 20:13:42,802 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 20:13:42,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 150 transitions, 308 flow [2022-12-13 20:13:42,889 INFO L130 PetriNetUnfolder]: 23/203 cut-off events. [2022-12-13 20:13:42,889 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 20:13:42,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 203 events. 23/203 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 573 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 102. Up to 6 conditions per place. [2022-12-13 20:13:42,895 INFO L82 GeneralOperation]: Start removeDead. Operand has 138 places, 150 transitions, 308 flow [2022-12-13 20:13:42,899 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 150 transitions, 308 flow [2022-12-13 20:13:42,902 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:13:42,910 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 138 places, 150 transitions, 308 flow [2022-12-13 20:13:42,912 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 138 places, 150 transitions, 308 flow [2022-12-13 20:13:42,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 150 transitions, 308 flow [2022-12-13 20:13:42,948 INFO L130 PetriNetUnfolder]: 23/203 cut-off events. [2022-12-13 20:13:42,949 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 20:13:42,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 203 events. 23/203 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 573 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 102. Up to 6 conditions per place. [2022-12-13 20:13:42,957 INFO L119 LiptonReduction]: Number of co-enabled transitions 5192 [2022-12-13 20:13:46,019 INFO L134 LiptonReduction]: Checked pairs total: 13459 [2022-12-13 20:13:46,019 INFO L136 LiptonReduction]: Total number of compositions: 122 [2022-12-13 20:13:46,034 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:13:46,040 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;@3f8a18c7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:13:46,040 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-12-13 20:13:46,044 INFO L130 PetriNetUnfolder]: 1/11 cut-off events. [2022-12-13 20:13:46,044 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:13:46,045 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:13:46,045 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 20:13:46,045 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-12-13 20:13:46,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:13:46,050 INFO L85 PathProgramCache]: Analyzing trace with hash 17295386, now seen corresponding path program 1 times [2022-12-13 20:13:46,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:13:46,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988755873] [2022-12-13 20:13:46,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:13:46,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:13:46,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:13:46,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:13:46,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:13:46,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988755873] [2022-12-13 20:13:46,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988755873] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:13:46,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:13:46,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:13:46,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765827034] [2022-12-13 20:13:46,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:13:46,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:13:46,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:13:46,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:13:46,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:13:46,311 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 272 [2022-12-13 20:13:46,314 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 49 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:46,314 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:13:46,314 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 272 [2022-12-13 20:13:46,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:13:46,415 INFO L130 PetriNetUnfolder]: 145/392 cut-off events. [2022-12-13 20:13:46,416 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 20:13:46,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 707 conditions, 392 events. 145/392 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1737 event pairs, 110 based on Foata normal form. 37/379 useless extension candidates. Maximal degree in co-relation 683. Up to 293 conditions per place. [2022-12-13 20:13:46,418 INFO L137 encePairwiseOnDemand]: 259/272 looper letters, 37 selfloop transitions, 2 changer transitions 2/53 dead transitions. [2022-12-13 20:13:46,418 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 53 transitions, 196 flow [2022-12-13 20:13:46,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:13:46,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:13:46,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 454 transitions. [2022-12-13 20:13:46,429 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5563725490196079 [2022-12-13 20:13:46,430 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 454 transitions. [2022-12-13 20:13:46,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 454 transitions. [2022-12-13 20:13:46,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:13:46,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 454 transitions. [2022-12-13 20:13:46,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:46,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 272.0) internal successors, (1088), 4 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:46,440 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 272.0) internal successors, (1088), 4 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:46,441 INFO L175 Difference]: Start difference. First operand has 42 places, 49 transitions, 106 flow. Second operand 3 states and 454 transitions. [2022-12-13 20:13:46,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 53 transitions, 196 flow [2022-12-13 20:13:46,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 196 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:13:46,445 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 91 flow [2022-12-13 20:13:46,446 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2022-12-13 20:13:46,449 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2022-12-13 20:13:46,449 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 91 flow [2022-12-13 20:13:46,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:46,449 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:13:46,449 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 20:13:46,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 20:13:46,450 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-12-13 20:13:46,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:13:46,450 INFO L85 PathProgramCache]: Analyzing trace with hash -584436439, now seen corresponding path program 1 times [2022-12-13 20:13:46,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:13:46,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141725499] [2022-12-13 20:13:46,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:13:46,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:13:46,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:13:46,468 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:13:46,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:13:46,492 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:13:46,492 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 20:13:46,494 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-12-13 20:13:46,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2022-12-13 20:13:46,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2022-12-13 20:13:46,496 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2022-12-13 20:13:46,496 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2022-12-13 20:13:46,496 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2022-12-13 20:13:46,496 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2022-12-13 20:13:46,496 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2022-12-13 20:13:46,496 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2022-12-13 20:13:46,496 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2022-12-13 20:13:46,497 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2022-12-13 20:13:46,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 20:13:46,497 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 20:13:46,499 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 20:13:46,499 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 20:13:46,517 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 20:13:46,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 196 transitions, 410 flow [2022-12-13 20:13:46,554 INFO L130 PetriNetUnfolder]: 40/333 cut-off events. [2022-12-13 20:13:46,555 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 20:13:46,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 333 events. 40/333 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1137 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 205. Up to 9 conditions per place. [2022-12-13 20:13:46,556 INFO L82 GeneralOperation]: Start removeDead. Operand has 179 places, 196 transitions, 410 flow [2022-12-13 20:13:46,558 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 179 places, 196 transitions, 410 flow [2022-12-13 20:13:46,558 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:13:46,558 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 179 places, 196 transitions, 410 flow [2022-12-13 20:13:46,558 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 179 places, 196 transitions, 410 flow [2022-12-13 20:13:46,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 196 transitions, 410 flow [2022-12-13 20:13:46,597 INFO L130 PetriNetUnfolder]: 40/333 cut-off events. [2022-12-13 20:13:46,597 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 20:13:46,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 333 events. 40/333 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1137 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 205. Up to 9 conditions per place. [2022-12-13 20:13:46,617 INFO L119 LiptonReduction]: Number of co-enabled transitions 15224 [2022-12-13 20:13:49,079 INFO L134 LiptonReduction]: Checked pairs total: 48340 [2022-12-13 20:13:49,079 INFO L136 LiptonReduction]: Total number of compositions: 135 [2022-12-13 20:13:49,081 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:13:49,081 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;@3f8a18c7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:13:49,082 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-12-13 20:13:49,084 INFO L130 PetriNetUnfolder]: 1/12 cut-off events. [2022-12-13 20:13:49,084 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:13:49,085 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:13:49,085 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 20:13:49,085 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-12-13 20:13:49,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:13:49,085 INFO L85 PathProgramCache]: Analyzing trace with hash 28901891, now seen corresponding path program 1 times [2022-12-13 20:13:49,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:13:49,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929727761] [2022-12-13 20:13:49,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:13:49,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:13:49,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:13:49,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:13:49,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:13:49,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929727761] [2022-12-13 20:13:49,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929727761] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:13:49,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:13:49,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:13:49,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664376794] [2022-12-13 20:13:49,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:13:49,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:13:49,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:13:49,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:13:49,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:13:49,151 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 331 [2022-12-13 20:13:49,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 84 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:49,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:13:49,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 331 [2022-12-13 20:13:49,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:13:49,724 INFO L130 PetriNetUnfolder]: 2834/5795 cut-off events. [2022-12-13 20:13:49,724 INFO L131 PetriNetUnfolder]: For 59/59 co-relation queries the response was YES. [2022-12-13 20:13:49,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10345 conditions, 5795 events. 2834/5795 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 43594 event pairs, 2394 based on Foata normal form. 694/5784 useless extension candidates. Maximal degree in co-relation 6857. Up to 4467 conditions per place. [2022-12-13 20:13:49,754 INFO L137 encePairwiseOnDemand]: 312/331 looper letters, 48 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2022-12-13 20:13:49,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 81 transitions, 280 flow [2022-12-13 20:13:49,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:13:49,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:13:49,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 583 transitions. [2022-12-13 20:13:49,758 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5871097683786506 [2022-12-13 20:13:49,758 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 583 transitions. [2022-12-13 20:13:49,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 583 transitions. [2022-12-13 20:13:49,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:13:49,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 583 transitions. [2022-12-13 20:13:49,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:49,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:49,764 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:49,764 INFO L175 Difference]: Start difference. First operand has 72 places, 84 transitions, 186 flow. Second operand 3 states and 583 transitions. [2022-12-13 20:13:49,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 81 transitions, 280 flow [2022-12-13 20:13:49,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 81 transitions, 280 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:13:49,766 INFO L231 Difference]: Finished difference. Result has 74 places, 70 transitions, 170 flow [2022-12-13 20:13:49,766 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=74, PETRI_TRANSITIONS=70} [2022-12-13 20:13:49,767 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 2 predicate places. [2022-12-13 20:13:49,767 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 70 transitions, 170 flow [2022-12-13 20:13:49,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:49,767 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:13:49,767 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:13:49,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 20:13:49,767 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-12-13 20:13:49,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:13:49,768 INFO L85 PathProgramCache]: Analyzing trace with hash -209299083, now seen corresponding path program 1 times [2022-12-13 20:13:49,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:13:49,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865583089] [2022-12-13 20:13:49,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:13:49,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:13:49,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:13:49,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:13:49,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:13:49,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865583089] [2022-12-13 20:13:49,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865583089] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:13:49,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:13:49,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:13:49,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081968038] [2022-12-13 20:13:49,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:13:49,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:13:49,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:13:49,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:13:49,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:13:49,819 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 331 [2022-12-13 20:13:49,821 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 70 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:49,821 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:13:49,821 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 331 [2022-12-13 20:13:49,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:13:50,863 INFO L130 PetriNetUnfolder]: 8865/16109 cut-off events. [2022-12-13 20:13:50,863 INFO L131 PetriNetUnfolder]: For 783/783 co-relation queries the response was YES. [2022-12-13 20:13:50,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31368 conditions, 16109 events. 8865/16109 cut-off events. For 783/783 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 123146 event pairs, 3529 based on Foata normal form. 0/14667 useless extension candidates. Maximal degree in co-relation 31262. Up to 7450 conditions per place. [2022-12-13 20:13:50,940 INFO L137 encePairwiseOnDemand]: 312/331 looper letters, 81 selfloop transitions, 14 changer transitions 0/114 dead transitions. [2022-12-13 20:13:50,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 114 transitions, 468 flow [2022-12-13 20:13:50,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:13:50,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:13:50,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 563 transitions. [2022-12-13 20:13:50,942 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5669687814702921 [2022-12-13 20:13:50,942 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 563 transitions. [2022-12-13 20:13:50,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 563 transitions. [2022-12-13 20:13:50,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:13:50,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 563 transitions. [2022-12-13 20:13:50,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:50,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:50,946 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:50,946 INFO L175 Difference]: Start difference. First operand has 74 places, 70 transitions, 170 flow. Second operand 3 states and 563 transitions. [2022-12-13 20:13:50,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 114 transitions, 468 flow [2022-12-13 20:13:50,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 114 transitions, 465 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:13:50,950 INFO L231 Difference]: Finished difference. Result has 77 places, 84 transitions, 290 flow [2022-12-13 20:13:50,950 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=290, PETRI_PLACES=77, PETRI_TRANSITIONS=84} [2022-12-13 20:13:50,950 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 5 predicate places. [2022-12-13 20:13:50,951 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 84 transitions, 290 flow [2022-12-13 20:13:50,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:50,951 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:13:50,951 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 20:13:50,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 20:13:50,951 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-12-13 20:13:50,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:13:50,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1529503301, now seen corresponding path program 1 times [2022-12-13 20:13:50,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:13:50,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885731251] [2022-12-13 20:13:50,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:13:50,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:13:50,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:13:50,968 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:13:50,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:13:50,981 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:13:50,981 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 20:13:50,981 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-12-13 20:13:50,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2022-12-13 20:13:50,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2022-12-13 20:13:50,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2022-12-13 20:13:50,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2022-12-13 20:13:50,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2022-12-13 20:13:50,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2022-12-13 20:13:50,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2022-12-13 20:13:50,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2022-12-13 20:13:50,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2022-12-13 20:13:50,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2022-12-13 20:13:50,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2022-12-13 20:13:50,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2022-12-13 20:13:50,984 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2022-12-13 20:13:50,984 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2022-12-13 20:13:50,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 20:13:50,984 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-13 20:13:50,985 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 20:13:50,985 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 20:13:51,009 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 20:13:51,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 242 transitions, 514 flow [2022-12-13 20:13:51,080 INFO L130 PetriNetUnfolder]: 62/508 cut-off events. [2022-12-13 20:13:51,080 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 20:13:51,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536 conditions, 508 events. 62/508 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1925 event pairs, 1 based on Foata normal form. 0/418 useless extension candidates. Maximal degree in co-relation 341. Up to 16 conditions per place. [2022-12-13 20:13:51,083 INFO L82 GeneralOperation]: Start removeDead. Operand has 220 places, 242 transitions, 514 flow [2022-12-13 20:13:51,086 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 220 places, 242 transitions, 514 flow [2022-12-13 20:13:51,086 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:13:51,086 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 220 places, 242 transitions, 514 flow [2022-12-13 20:13:51,087 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 220 places, 242 transitions, 514 flow [2022-12-13 20:13:51,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 242 transitions, 514 flow [2022-12-13 20:13:51,148 INFO L130 PetriNetUnfolder]: 62/508 cut-off events. [2022-12-13 20:13:51,148 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 20:13:51,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536 conditions, 508 events. 62/508 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1925 event pairs, 1 based on Foata normal form. 0/418 useless extension candidates. Maximal degree in co-relation 341. Up to 16 conditions per place. [2022-12-13 20:13:51,165 INFO L119 LiptonReduction]: Number of co-enabled transitions 29040 [2022-12-13 20:13:53,815 INFO L134 LiptonReduction]: Checked pairs total: 114806 [2022-12-13 20:13:53,815 INFO L136 LiptonReduction]: Total number of compositions: 158 [2022-12-13 20:13:53,816 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:13:53,817 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;@3f8a18c7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:13:53,817 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-12-13 20:13:53,818 INFO L130 PetriNetUnfolder]: 1/11 cut-off events. [2022-12-13 20:13:53,818 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:13:53,818 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:13:53,818 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 20:13:53,818 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 20:13:53,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:13:53,819 INFO L85 PathProgramCache]: Analyzing trace with hash 42629625, now seen corresponding path program 1 times [2022-12-13 20:13:53,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:13:53,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259704646] [2022-12-13 20:13:53,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:13:53,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:13:53,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:13:53,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:13:53,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:13:53,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259704646] [2022-12-13 20:13:53,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259704646] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:13:53,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:13:53,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:13:53,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743420319] [2022-12-13 20:13:53,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:13:53,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:13:53,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:13:53,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:13:53,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:13:53,854 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 400 [2022-12-13 20:13:53,854 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 116 transitions, 262 flow. Second operand has 3 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:53,854 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:13:53,854 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 400 [2022-12-13 20:13:53,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:13:59,257 INFO L130 PetriNetUnfolder]: 48690/84329 cut-off events. [2022-12-13 20:13:59,257 INFO L131 PetriNetUnfolder]: For 1592/1592 co-relation queries the response was YES. [2022-12-13 20:13:59,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152857 conditions, 84329 events. 48690/84329 cut-off events. For 1592/1592 co-relation queries the response was YES. Maximal size of possible extension queue 2098. Compared 797897 event pairs, 30561 based on Foata normal form. 12773/88734 useless extension candidates. Maximal degree in co-relation 10594. Up to 67428 conditions per place. [2022-12-13 20:13:59,585 INFO L137 encePairwiseOnDemand]: 374/400 looper letters, 60 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2022-12-13 20:13:59,585 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 106 transitions, 366 flow [2022-12-13 20:13:59,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:13:59,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:13:59,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 716 transitions. [2022-12-13 20:13:59,587 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5966666666666667 [2022-12-13 20:13:59,588 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 716 transitions. [2022-12-13 20:13:59,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 716 transitions. [2022-12-13 20:13:59,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:13:59,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 716 transitions. [2022-12-13 20:13:59,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.66666666666666) internal successors, (716), 3 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:59,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 400.0) internal successors, (1600), 4 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:59,591 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 400.0) internal successors, (1600), 4 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:59,591 INFO L175 Difference]: Start difference. First operand has 98 places, 116 transitions, 262 flow. Second operand 3 states and 716 transitions. [2022-12-13 20:13:59,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 106 transitions, 366 flow [2022-12-13 20:13:59,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 106 transitions, 366 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:13:59,594 INFO L231 Difference]: Finished difference. Result has 100 places, 95 transitions, 232 flow [2022-12-13 20:13:59,594 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=400, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=100, PETRI_TRANSITIONS=95} [2022-12-13 20:13:59,595 INFO L288 CegarLoopForPetriNet]: 98 programPoint places, 2 predicate places. [2022-12-13 20:13:59,595 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 95 transitions, 232 flow [2022-12-13 20:13:59,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:59,595 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:13:59,595 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:13:59,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 20:13:59,595 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 20:13:59,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:13:59,596 INFO L85 PathProgramCache]: Analyzing trace with hash -2102479326, now seen corresponding path program 1 times [2022-12-13 20:13:59,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:13:59,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909874837] [2022-12-13 20:13:59,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:13:59,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:13:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:13:59,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:13:59,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:13:59,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909874837] [2022-12-13 20:13:59,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909874837] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:13:59,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:13:59,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:13:59,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529576897] [2022-12-13 20:13:59,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:13:59,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:13:59,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:13:59,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:13:59,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:13:59,650 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 400 [2022-12-13 20:13:59,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 95 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:59,652 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:13:59,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 400 [2022-12-13 20:13:59,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:14:24,821 INFO L130 PetriNetUnfolder]: 279781/422405 cut-off events. [2022-12-13 20:14:24,822 INFO L131 PetriNetUnfolder]: For 19584/19584 co-relation queries the response was YES. [2022-12-13 20:14:25,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 837287 conditions, 422405 events. 279781/422405 cut-off events. For 19584/19584 co-relation queries the response was YES. Maximal size of possible extension queue 7600. Compared 3764323 event pairs, 115253 based on Foata normal form. 0/383289 useless extension candidates. Maximal degree in co-relation 837175. Up to 204411 conditions per place. [2022-12-13 20:14:26,839 INFO L137 encePairwiseOnDemand]: 373/400 looper letters, 109 selfloop transitions, 20 changer transitions 0/155 dead transitions. [2022-12-13 20:14:26,840 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 155 transitions, 640 flow [2022-12-13 20:14:26,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:14:26,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:14:26,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 689 transitions. [2022-12-13 20:14:26,842 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5741666666666667 [2022-12-13 20:14:26,842 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 689 transitions. [2022-12-13 20:14:26,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 689 transitions. [2022-12-13 20:14:26,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:14:26,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 689 transitions. [2022-12-13 20:14:26,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:14:26,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 400.0) internal successors, (1600), 4 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:14:26,846 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 400.0) internal successors, (1600), 4 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:14:26,846 INFO L175 Difference]: Start difference. First operand has 100 places, 95 transitions, 232 flow. Second operand 3 states and 689 transitions. [2022-12-13 20:14:26,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 155 transitions, 640 flow [2022-12-13 20:14:26,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 155 transitions, 637 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:14:26,862 INFO L231 Difference]: Finished difference. Result has 103 places, 115 transitions, 404 flow [2022-12-13 20:14:26,862 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=400, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=404, PETRI_PLACES=103, PETRI_TRANSITIONS=115} [2022-12-13 20:14:26,863 INFO L288 CegarLoopForPetriNet]: 98 programPoint places, 5 predicate places. [2022-12-13 20:14:26,863 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 115 transitions, 404 flow [2022-12-13 20:14:26,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:14:26,864 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:14:26,864 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:14:26,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 20:14:26,864 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 20:14:26,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:14:26,865 INFO L85 PathProgramCache]: Analyzing trace with hash -2072634076, now seen corresponding path program 1 times [2022-12-13 20:14:26,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:14:26,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313904211] [2022-12-13 20:14:26,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:14:26,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:14:26,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:14:26,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:14:26,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:14:26,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313904211] [2022-12-13 20:14:26,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313904211] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:14:26,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:14:26,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:14:26,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218742308] [2022-12-13 20:14:26,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:14:26,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:14:26,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:14:26,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:14:26,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:14:26,930 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 400 [2022-12-13 20:14:26,930 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 115 transitions, 404 flow. Second operand has 3 states, 3 states have (on average 197.33333333333334) internal successors, (592), 3 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:14:26,930 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:14:26,930 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 400 [2022-12-13 20:14:26,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:14:30,415 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1164] L939-16-->L939-17: Formula: (= |v_#race~global~0_12| 0) InVars {} OutVars{#race~global~0=|v_#race~global~0_12|} AuxVars[] AssignedVars[#race~global~0][89], [136#L939-4true, 60#L939-4true, Black: 225#(= |ULTIMATE.start_main_~i~1#1| 0), 80#L949-4true, t_funThread1of3ForFork0InUse, Black: 228#true, t_funThread2of3ForFork0InUse, 234#true, 230#(= |#race~global~0| 0), t_funThread3of3ForFork0InUse, 150#L939-17true]) [2022-12-13 20:14:30,416 INFO L383 tUnfolder$Statistics]: this new event has 38 ancestors and is cut-off event [2022-12-13 20:14:30,416 INFO L386 tUnfolder$Statistics]: existing Event has 38 ancestors and is cut-off event [2022-12-13 20:14:30,416 INFO L386 tUnfolder$Statistics]: existing Event has 38 ancestors and is cut-off event [2022-12-13 20:14:30,416 INFO L386 tUnfolder$Statistics]: existing Event has 38 ancestors and is cut-off event [2022-12-13 20:14:30,913 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1242] L949-4-->L949-6: Formula: (= |v_#race~global~0_64| 0) InVars {#race~global~0=|v_#race~global~0_64|} OutVars{#race~global~0=|v_#race~global~0_64|} AuxVars[] AssignedVars[][21], [136#L939-4true, 60#L939-4true, 112#L949-6true, Black: 225#(= |ULTIMATE.start_main_~i~1#1| 0), t_funThread1of3ForFork0InUse, Black: 228#true, 234#true, t_funThread2of3ForFork0InUse, 230#(= |#race~global~0| 0), t_funThread3of3ForFork0InUse, 89#L939-16true]) [2022-12-13 20:14:30,913 INFO L383 tUnfolder$Statistics]: this new event has 38 ancestors and is not cut-off event [2022-12-13 20:14:30,913 INFO L386 tUnfolder$Statistics]: existing Event has 38 ancestors and is not cut-off event [2022-12-13 20:14:30,913 INFO L386 tUnfolder$Statistics]: existing Event has 38 ancestors and is not cut-off event [2022-12-13 20:14:30,913 INFO L386 tUnfolder$Statistics]: existing Event has 38 ancestors and is not cut-off event [2022-12-13 20:14:30,913 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1164] L939-16-->L939-17: Formula: (= |v_#race~global~0_12| 0) InVars {} OutVars{#race~global~0=|v_#race~global~0_12|} AuxVars[] AssignedVars[#race~global~0][89], [136#L939-4true, 60#L939-4true, 112#L949-6true, Black: 225#(= |ULTIMATE.start_main_~i~1#1| 0), t_funThread1of3ForFork0InUse, Black: 228#true, 234#true, t_funThread2of3ForFork0InUse, 230#(= |#race~global~0| 0), t_funThread3of3ForFork0InUse, 150#L939-17true]) [2022-12-13 20:14:30,913 INFO L383 tUnfolder$Statistics]: this new event has 39 ancestors and is cut-off event [2022-12-13 20:14:30,913 INFO L386 tUnfolder$Statistics]: existing Event has 39 ancestors and is cut-off event [2022-12-13 20:14:30,913 INFO L386 tUnfolder$Statistics]: existing Event has 39 ancestors and is cut-off event [2022-12-13 20:14:30,913 INFO L386 tUnfolder$Statistics]: existing Event has 39 ancestors and is cut-off event [2022-12-13 20:14:31,457 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1164] L939-16-->L939-17: Formula: (= |v_#race~global~0_12| 0) InVars {} OutVars{#race~global~0=|v_#race~global~0_12|} AuxVars[] AssignedVars[#race~global~0][89], [60#L939-4true, 136#L939-4true, 18#L949-8true, Black: 225#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 228#true, t_funThread1of3ForFork0InUse, 234#true, t_funThread2of3ForFork0InUse, 230#(= |#race~global~0| 0), t_funThread3of3ForFork0InUse, 150#L939-17true]) [2022-12-13 20:14:31,457 INFO L383 tUnfolder$Statistics]: this new event has 40 ancestors and is cut-off event [2022-12-13 20:14:31,457 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 20:14:31,457 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 20:14:31,457 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 20:14:31,493 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1231] L939-6-->L939-8: Formula: (= |v_t_funThread2of3ForFork0_#t~nondet34_13| |v_#race~global~0_58|) InVars {} OutVars{t_funThread2of3ForFork0_#t~nondet34=|v_t_funThread2of3ForFork0_#t~nondet34_13|, #race~global~0=|v_#race~global~0_58|} AuxVars[] AssignedVars[t_funThread2of3ForFork0_#t~nondet34, #race~global~0][50], [136#L939-4true, Black: 225#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 230#(= |#race~global~0| 0), 80#L949-4true, t_funThread1of3ForFork0InUse, 198#L939-8true, t_funThread2of3ForFork0InUse, 234#true, t_funThread3of3ForFork0InUse, 228#true, 89#L939-16true]) [2022-12-13 20:14:31,493 INFO L383 tUnfolder$Statistics]: this new event has 40 ancestors and is cut-off event [2022-12-13 20:14:31,493 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 20:14:31,493 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 20:14:31,493 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 20:14:32,096 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1164] L939-16-->L939-17: Formula: (= |v_#race~global~0_12| 0) InVars {} OutVars{#race~global~0=|v_#race~global~0_12|} AuxVars[] AssignedVars[#race~global~0][89], [130#L951true, 136#L939-4true, 60#L939-4true, Black: 225#(= |ULTIMATE.start_main_~i~1#1| 0), t_funThread1of3ForFork0InUse, Black: 228#true, t_funThread2of3ForFork0InUse, 234#true, 230#(= |#race~global~0| 0), t_funThread3of3ForFork0InUse, 150#L939-17true]) [2022-12-13 20:14:32,096 INFO L383 tUnfolder$Statistics]: this new event has 41 ancestors and is cut-off event [2022-12-13 20:14:32,096 INFO L386 tUnfolder$Statistics]: existing Event has 41 ancestors and is cut-off event [2022-12-13 20:14:32,097 INFO L386 tUnfolder$Statistics]: existing Event has 41 ancestors and is cut-off event [2022-12-13 20:14:32,097 INFO L386 tUnfolder$Statistics]: existing Event has 41 ancestors and is cut-off event [2022-12-13 20:14:32,133 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1231] L939-6-->L939-8: Formula: (= |v_t_funThread2of3ForFork0_#t~nondet34_13| |v_#race~global~0_58|) InVars {} OutVars{t_funThread2of3ForFork0_#t~nondet34=|v_t_funThread2of3ForFork0_#t~nondet34_13|, #race~global~0=|v_#race~global~0_58|} AuxVars[] AssignedVars[t_funThread2of3ForFork0_#t~nondet34, #race~global~0][50], [136#L939-4true, 112#L949-6true, Black: 225#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 230#(= |#race~global~0| 0), t_funThread1of3ForFork0InUse, 198#L939-8true, 234#true, t_funThread2of3ForFork0InUse, 228#true, t_funThread3of3ForFork0InUse, 89#L939-16true]) [2022-12-13 20:14:32,133 INFO L383 tUnfolder$Statistics]: this new event has 41 ancestors and is cut-off event [2022-12-13 20:14:32,133 INFO L386 tUnfolder$Statistics]: existing Event has 41 ancestors and is cut-off event [2022-12-13 20:14:32,134 INFO L386 tUnfolder$Statistics]: existing Event has 41 ancestors and is cut-off event [2022-12-13 20:14:32,134 INFO L386 tUnfolder$Statistics]: existing Event has 41 ancestors and is cut-off event [2022-12-13 20:14:33,110 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1164] L939-16-->L939-17: Formula: (= |v_#race~global~0_12| 0) InVars {} OutVars{#race~global~0=|v_#race~global~0_12|} AuxVars[] AssignedVars[#race~global~0][89], [136#L939-4true, 60#L939-4true, Black: 225#(= |ULTIMATE.start_main_~i~1#1| 0), t_funThread1of3ForFork0InUse, Black: 228#true, t_funThread2of3ForFork0InUse, 234#true, 230#(= |#race~global~0| 0), t_funThread3of3ForFork0InUse, 81#L952-13true, 150#L939-17true]) [2022-12-13 20:14:33,110 INFO L383 tUnfolder$Statistics]: this new event has 42 ancestors and is cut-off event [2022-12-13 20:14:33,110 INFO L386 tUnfolder$Statistics]: existing Event has 37 ancestors and is cut-off event [2022-12-13 20:14:33,110 INFO L386 tUnfolder$Statistics]: existing Event has 37 ancestors and is cut-off event [2022-12-13 20:14:33,110 INFO L386 tUnfolder$Statistics]: existing Event has 37 ancestors and is cut-off event [2022-12-13 20:14:33,110 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1231] L939-6-->L939-8: Formula: (= |v_t_funThread2of3ForFork0_#t~nondet34_13| |v_#race~global~0_58|) InVars {} OutVars{t_funThread2of3ForFork0_#t~nondet34=|v_t_funThread2of3ForFork0_#t~nondet34_13|, #race~global~0=|v_#race~global~0_58|} AuxVars[] AssignedVars[t_funThread2of3ForFork0_#t~nondet34, #race~global~0][50], [136#L939-4true, Black: 225#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 230#(= |#race~global~0| 0), t_funThread1of3ForFork0InUse, 198#L939-8true, t_funThread2of3ForFork0InUse, 234#true, t_funThread3of3ForFork0InUse, 228#true, 81#L952-13true, 89#L939-16true]) [2022-12-13 20:14:33,110 INFO L383 tUnfolder$Statistics]: this new event has 44 ancestors and is cut-off event [2022-12-13 20:14:33,110 INFO L386 tUnfolder$Statistics]: existing Event has 39 ancestors and is cut-off event [2022-12-13 20:14:33,110 INFO L386 tUnfolder$Statistics]: existing Event has 39 ancestors and is cut-off event [2022-12-13 20:14:33,111 INFO L386 tUnfolder$Statistics]: existing Event has 39 ancestors and is cut-off event [2022-12-13 20:14:33,127 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1231] L939-6-->L939-8: Formula: (= |v_t_funThread2of3ForFork0_#t~nondet34_13| |v_#race~global~0_58|) InVars {} OutVars{t_funThread2of3ForFork0_#t~nondet34=|v_t_funThread2of3ForFork0_#t~nondet34_13|, #race~global~0=|v_#race~global~0_58|} AuxVars[] AssignedVars[t_funThread2of3ForFork0_#t~nondet34, #race~global~0][50], [136#L939-4true, 18#L949-8true, Black: 225#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 230#(= |#race~global~0| 0), t_funThread1of3ForFork0InUse, 198#L939-8true, t_funThread2of3ForFork0InUse, 234#true, t_funThread3of3ForFork0InUse, 228#true, 89#L939-16true]) [2022-12-13 20:14:33,127 INFO L383 tUnfolder$Statistics]: this new event has 42 ancestors and is cut-off event [2022-12-13 20:14:33,127 INFO L386 tUnfolder$Statistics]: existing Event has 42 ancestors and is cut-off event [2022-12-13 20:14:33,127 INFO L386 tUnfolder$Statistics]: existing Event has 42 ancestors and is cut-off event [2022-12-13 20:14:33,127 INFO L386 tUnfolder$Statistics]: existing Event has 42 ancestors and is cut-off event [2022-12-13 20:14:34,098 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1164] L939-16-->L939-17: Formula: (= |v_#race~global~0_12| 0) InVars {} OutVars{#race~global~0=|v_#race~global~0_12|} AuxVars[] AssignedVars[#race~global~0][89], [136#L939-4true, 60#L939-4true, Black: 225#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 228#true, t_funThread1of3ForFork0InUse, 234#true, t_funThread2of3ForFork0InUse, 230#(= |#race~global~0| 0), t_funThread3of3ForFork0InUse, 121#L952-8true, 150#L939-17true]) [2022-12-13 20:14:34,098 INFO L383 tUnfolder$Statistics]: this new event has 43 ancestors and is cut-off event [2022-12-13 20:14:34,098 INFO L386 tUnfolder$Statistics]: existing Event has 38 ancestors and is cut-off event [2022-12-13 20:14:34,098 INFO L386 tUnfolder$Statistics]: existing Event has 38 ancestors and is cut-off event [2022-12-13 20:14:34,098 INFO L386 tUnfolder$Statistics]: existing Event has 38 ancestors and is cut-off event [2022-12-13 20:14:34,098 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1231] L939-6-->L939-8: Formula: (= |v_t_funThread2of3ForFork0_#t~nondet34_13| |v_#race~global~0_58|) InVars {} OutVars{t_funThread2of3ForFork0_#t~nondet34=|v_t_funThread2of3ForFork0_#t~nondet34_13|, #race~global~0=|v_#race~global~0_58|} AuxVars[] AssignedVars[t_funThread2of3ForFork0_#t~nondet34, #race~global~0][50], [136#L939-4true, Black: 225#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 230#(= |#race~global~0| 0), t_funThread1of3ForFork0InUse, 198#L939-8true, 234#true, t_funThread2of3ForFork0InUse, 228#true, t_funThread3of3ForFork0InUse, 121#L952-8true, 89#L939-16true]) [2022-12-13 20:14:34,098 INFO L383 tUnfolder$Statistics]: this new event has 45 ancestors and is cut-off event [2022-12-13 20:14:34,098 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 20:14:34,098 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 20:14:34,098 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 20:14:34,102 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1164] L939-16-->L939-17: Formula: (= |v_#race~global~0_12| 0) InVars {} OutVars{#race~global~0=|v_#race~global~0_12|} AuxVars[] AssignedVars[#race~global~0][89], [136#L939-4true, 60#L939-4true, Black: 225#(= |ULTIMATE.start_main_~i~1#1| 0), 99#ULTIMATE.startEXITtrue, Black: 228#true, t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0InUse, 234#true, 230#(= |#race~global~0| 0), t_funThread3of3ForFork0InUse, 150#L939-17true]) [2022-12-13 20:14:34,102 INFO L383 tUnfolder$Statistics]: this new event has 43 ancestors and is cut-off event [2022-12-13 20:14:34,103 INFO L386 tUnfolder$Statistics]: existing Event has 38 ancestors and is cut-off event [2022-12-13 20:14:34,103 INFO L386 tUnfolder$Statistics]: existing Event has 38 ancestors and is cut-off event [2022-12-13 20:14:34,103 INFO L386 tUnfolder$Statistics]: existing Event has 38 ancestors and is cut-off event [2022-12-13 20:14:34,103 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1231] L939-6-->L939-8: Formula: (= |v_t_funThread2of3ForFork0_#t~nondet34_13| |v_#race~global~0_58|) InVars {} OutVars{t_funThread2of3ForFork0_#t~nondet34=|v_t_funThread2of3ForFork0_#t~nondet34_13|, #race~global~0=|v_#race~global~0_58|} AuxVars[] AssignedVars[t_funThread2of3ForFork0_#t~nondet34, #race~global~0][50], [136#L939-4true, Black: 225#(= |ULTIMATE.start_main_~i~1#1| 0), 99#ULTIMATE.startEXITtrue, Black: 230#(= |#race~global~0| 0), t_funThread1of3ForFork0InUse, 198#L939-8true, t_funThread2of3ForFork0InUse, 234#true, 228#true, t_funThread3of3ForFork0InUse, 89#L939-16true]) [2022-12-13 20:14:34,103 INFO L383 tUnfolder$Statistics]: this new event has 45 ancestors and is cut-off event [2022-12-13 20:14:34,103 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 20:14:34,103 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 20:14:34,103 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 20:14:34,124 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1231] L939-6-->L939-8: Formula: (= |v_t_funThread2of3ForFork0_#t~nondet34_13| |v_#race~global~0_58|) InVars {} OutVars{t_funThread2of3ForFork0_#t~nondet34=|v_t_funThread2of3ForFork0_#t~nondet34_13|, #race~global~0=|v_#race~global~0_58|} AuxVars[] AssignedVars[t_funThread2of3ForFork0_#t~nondet34, #race~global~0][50], [130#L951true, 136#L939-4true, Black: 225#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 230#(= |#race~global~0| 0), t_funThread1of3ForFork0InUse, 198#L939-8true, 234#true, t_funThread2of3ForFork0InUse, 228#true, t_funThread3of3ForFork0InUse, 89#L939-16true]) [2022-12-13 20:14:34,125 INFO L383 tUnfolder$Statistics]: this new event has 43 ancestors and is cut-off event [2022-12-13 20:14:34,125 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is cut-off event [2022-12-13 20:14:34,125 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is cut-off event [2022-12-13 20:14:34,125 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is cut-off event [2022-12-13 20:14:51,032 INFO L130 PetriNetUnfolder]: 245037/379033 cut-off events. [2022-12-13 20:14:51,032 INFO L131 PetriNetUnfolder]: For 202289/207829 co-relation queries the response was YES. [2022-12-13 20:14:51,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 925532 conditions, 379033 events. 245037/379033 cut-off events. For 202289/207829 co-relation queries the response was YES. Maximal size of possible extension queue 8167. Compared 3546166 event pairs, 167731 based on Foata normal form. 162/337518 useless extension candidates. Maximal degree in co-relation 251329. Up to 317013 conditions per place. [2022-12-13 20:14:53,070 INFO L137 encePairwiseOnDemand]: 388/400 looper letters, 102 selfloop transitions, 21 changer transitions 0/167 dead transitions. [2022-12-13 20:14:53,070 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 167 transitions, 840 flow [2022-12-13 20:14:53,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:14:53,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:14:53,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 683 transitions. [2022-12-13 20:14:53,072 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5691666666666667 [2022-12-13 20:14:53,072 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 683 transitions. [2022-12-13 20:14:53,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 683 transitions. [2022-12-13 20:14:53,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:14:53,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 683 transitions. [2022-12-13 20:14:53,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:14:53,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 400.0) internal successors, (1600), 4 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:14:53,075 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 400.0) internal successors, (1600), 4 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:14:53,075 INFO L175 Difference]: Start difference. First operand has 103 places, 115 transitions, 404 flow. Second operand 3 states and 683 transitions. [2022-12-13 20:14:53,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 167 transitions, 840 flow [2022-12-13 20:14:53,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 167 transitions, 780 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:14:53,296 INFO L231 Difference]: Finished difference. Result has 104 places, 134 transitions, 541 flow [2022-12-13 20:14:53,296 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=400, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=541, PETRI_PLACES=104, PETRI_TRANSITIONS=134} [2022-12-13 20:14:53,297 INFO L288 CegarLoopForPetriNet]: 98 programPoint places, 6 predicate places. [2022-12-13 20:14:53,297 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 134 transitions, 541 flow [2022-12-13 20:14:53,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 197.33333333333334) internal successors, (592), 3 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:14:53,297 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:14:53,297 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-12-13 20:14:53,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 20:14:53,298 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 20:14:53,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:14:53,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1787228877, now seen corresponding path program 1 times [2022-12-13 20:14:53,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:14:53,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817143217] [2022-12-13 20:14:53,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:14:53,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:14:53,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:14:53,309 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:14:53,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:14:53,319 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:14:53,320 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 20:14:53,320 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-12-13 20:14:53,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2022-12-13 20:14:53,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2022-12-13 20:14:53,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2022-12-13 20:14:53,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2022-12-13 20:14:53,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2022-12-13 20:14:53,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2022-12-13 20:14:53,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2022-12-13 20:14:53,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2022-12-13 20:14:53,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2022-12-13 20:14:53,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2022-12-13 20:14:53,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 19 remaining) [2022-12-13 20:14:53,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2022-12-13 20:14:53,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2022-12-13 20:14:53,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2022-12-13 20:14:53,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2022-12-13 20:14:53,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2022-12-13 20:14:53,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2022-12-13 20:14:53,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2022-12-13 20:14:53,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 20:14:53,321 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-13 20:14:53,322 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 20:14:53,322 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-12-13 20:14:53,341 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 20:14:53,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 288 transitions, 620 flow [2022-12-13 20:14:53,425 INFO L130 PetriNetUnfolder]: 96/775 cut-off events. [2022-12-13 20:14:53,425 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 20:14:53,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 830 conditions, 775 events. 96/775 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 3306 event pairs, 6 based on Foata normal form. 0/642 useless extension candidates. Maximal degree in co-relation 528. Up to 32 conditions per place. [2022-12-13 20:14:53,429 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 288 transitions, 620 flow [2022-12-13 20:14:53,433 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 261 places, 288 transitions, 620 flow [2022-12-13 20:14:53,433 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:14:53,433 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 261 places, 288 transitions, 620 flow [2022-12-13 20:14:53,433 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 261 places, 288 transitions, 620 flow [2022-12-13 20:14:53,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 288 transitions, 620 flow [2022-12-13 20:14:53,509 INFO L130 PetriNetUnfolder]: 96/775 cut-off events. [2022-12-13 20:14:53,509 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 20:14:53,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 830 conditions, 775 events. 96/775 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 3306 event pairs, 6 based on Foata normal form. 0/642 useless extension candidates. Maximal degree in co-relation 528. Up to 32 conditions per place. [2022-12-13 20:14:53,533 INFO L119 LiptonReduction]: Number of co-enabled transitions 46992 [2022-12-13 20:14:56,595 INFO L134 LiptonReduction]: Checked pairs total: 198993 [2022-12-13 20:14:56,595 INFO L136 LiptonReduction]: Total number of compositions: 174 [2022-12-13 20:14:56,596 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:14:56,597 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;@3f8a18c7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:14:56,597 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-12-13 20:14:56,598 INFO L130 PetriNetUnfolder]: 1/11 cut-off events. [2022-12-13 20:14:56,598 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:14:56,598 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:14:56,598 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 20:14:56,598 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2022-12-13 20:14:56,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:14:56,599 INFO L85 PathProgramCache]: Analyzing trace with hash 58267928, now seen corresponding path program 1 times [2022-12-13 20:14:56,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:14:56,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207294809] [2022-12-13 20:14:56,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:14:56,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:14:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:14:56,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:14:56,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:14:56,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207294809] [2022-12-13 20:14:56,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207294809] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:14:56,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:14:56,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:14:56,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871584025] [2022-12-13 20:14:56,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:14:56,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:14:56,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:14:56,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:14:56,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:14:56,628 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 462 [2022-12-13 20:14:56,629 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 146 transitions, 336 flow. Second operand has 3 states, 3 states have (on average 247.33333333333334) internal successors, (742), 3 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:14:56,629 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:14:56,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 462 [2022-12-13 20:14:56,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:16:17,679 INFO L130 PetriNetUnfolder]: 740884/1120559 cut-off events. [2022-12-13 20:16:17,679 INFO L131 PetriNetUnfolder]: For 26840/26840 co-relation queries the response was YES. [2022-12-13 20:16:20,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2089876 conditions, 1120559 events. 740884/1120559 cut-off events. For 26840/26840 co-relation queries the response was YES. Maximal size of possible extension queue 21051. Compared 11519580 event pairs, 535336 based on Foata normal form. 163598/1185651 useless extension candidates. Maximal degree in co-relation 153479. Up to 954113 conditions per place. [2022-12-13 20:16:24,903 INFO L137 encePairwiseOnDemand]: 431/462 looper letters, 72 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2022-12-13 20:16:24,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 131 transitions, 454 flow [2022-12-13 20:16:24,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:16:24,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:16:24,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 847 transitions. [2022-12-13 20:16:24,905 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2022-12-13 20:16:24,905 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 847 transitions. [2022-12-13 20:16:24,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 847 transitions. [2022-12-13 20:16:24,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:16:24,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 847 transitions. [2022-12-13 20:16:24,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 282.3333333333333) internal successors, (847), 3 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:16:24,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:16:24,909 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:16:24,909 INFO L175 Difference]: Start difference. First operand has 124 places, 146 transitions, 336 flow. Second operand 3 states and 847 transitions. [2022-12-13 20:16:24,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 131 transitions, 454 flow [2022-12-13 20:16:24,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 131 transitions, 454 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:16:24,918 INFO L231 Difference]: Finished difference. Result has 126 places, 120 transitions, 296 flow [2022-12-13 20:16:24,919 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=296, PETRI_PLACES=126, PETRI_TRANSITIONS=120} [2022-12-13 20:16:24,919 INFO L288 CegarLoopForPetriNet]: 124 programPoint places, 2 predicate places. [2022-12-13 20:16:24,919 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 120 transitions, 296 flow [2022-12-13 20:16:24,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 247.33333333333334) internal successors, (742), 3 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:16:24,920 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:16:24,920 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:16:24,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 20:16:24,920 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2022-12-13 20:16:24,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:16:24,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1750168527, now seen corresponding path program 1 times [2022-12-13 20:16:24,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:16:24,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395493991] [2022-12-13 20:16:24,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:16:24,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:16:24,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:24,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:16:24,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:16:24,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395493991] [2022-12-13 20:16:24,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395493991] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:16:24,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:16:24,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:16:24,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040325209] [2022-12-13 20:16:24,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:16:24,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:16:24,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:16:24,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:16:24,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:16:24,979 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 462 [2022-12-13 20:16:24,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 120 transitions, 296 flow. Second operand has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:16:24,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:16:24,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 462 [2022-12-13 20:16:24,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand