./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b722779-ec34-4fe6-83f5-734e97fa33e6/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b722779-ec34-4fe6-83f5-734e97fa33e6/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_1b722779-ec34-4fe6-83f5-734e97fa33e6/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b722779-ec34-4fe6-83f5-734e97fa33e6/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b722779-ec34-4fe6-83f5-734e97fa33e6/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_1b722779-ec34-4fe6-83f5-734e97fa33e6/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 ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 --- 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 20:10:07,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:10:07,087 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:10:07,105 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:10:07,105 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:10:07,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:10:07,107 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:10:07,109 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:10:07,110 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:10:07,111 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:10:07,112 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:10:07,113 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:10:07,114 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:10:07,115 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:10:07,116 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:10:07,117 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:10:07,118 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:10:07,119 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:10:07,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:10:07,122 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:10:07,123 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:10:07,125 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:10:07,126 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:10:07,126 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:10:07,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:10:07,130 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:10:07,131 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:10:07,131 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:10:07,132 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:10:07,133 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:10:07,133 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:10:07,134 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:10:07,135 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:10:07,136 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:10:07,137 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:10:07,137 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:10:07,137 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:10:07,138 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:10:07,138 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:10:07,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:10:07,139 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:10:07,140 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b722779-ec34-4fe6-83f5-734e97fa33e6/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-12-13 20:10:07,162 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:10:07,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:10:07,163 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:10:07,163 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:10:07,164 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:10:07,164 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:10:07,165 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:10:07,165 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:10:07,165 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:10:07,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:10:07,165 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:10:07,166 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 20:10:07,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:10:07,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:10:07,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:10:07,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 20:10:07,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:10:07,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 20:10:07,167 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-13 20:10:07,167 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:10:07,167 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 20:10:07,167 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:10:07,168 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 20:10:07,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:10:07,168 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:10:07,168 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:10:07,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:10:07,169 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:10:07,169 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:10:07,169 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 20:10:07,169 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:10:07,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 20:10:07,170 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:10:07,170 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 20:10:07,170 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:10:07,170 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:10:07,170 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:10:07,170 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_1b722779-ec34-4fe6-83f5-734e97fa33e6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b722779-ec34-4fe6-83f5-734e97fa33e6/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 [2022-12-13 20:10:07,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:10:07,357 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:10:07,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:10:07,361 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:10:07,361 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:10:07,363 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b722779-ec34-4fe6-83f5-734e97fa33e6/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i [2022-12-13 20:10:09,897 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:10:10,089 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:10:10,089 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b722779-ec34-4fe6-83f5-734e97fa33e6/sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i [2022-12-13 20:10:10,101 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b722779-ec34-4fe6-83f5-734e97fa33e6/bin/uautomizer-uyxdKDjOR8/data/b4826557f/d41df7969faa430993e898c5da33ca91/FLAG293ce4ec8 [2022-12-13 20:10:10,111 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b722779-ec34-4fe6-83f5-734e97fa33e6/bin/uautomizer-uyxdKDjOR8/data/b4826557f/d41df7969faa430993e898c5da33ca91 [2022-12-13 20:10:10,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:10:10,115 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:10:10,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:10:10,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:10:10,119 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:10:10,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:10:10" (1/1) ... [2022-12-13 20:10:10,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@463e6add and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:10, skipping insertion in model container [2022-12-13 20:10:10,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:10:10" (1/1) ... [2022-12-13 20:10:10,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:10:10,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:10:10,342 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_1b722779-ec34-4fe6-83f5-734e97fa33e6/sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i[30176,30189] [2022-12-13 20:10:10,360 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:10:10,368 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:10:10,391 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_1b722779-ec34-4fe6-83f5-734e97fa33e6/sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i[30176,30189] [2022-12-13 20:10:10,398 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:10:10,420 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:10:10,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:10 WrapperNode [2022-12-13 20:10:10,420 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:10:10,421 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:10:10,421 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:10:10,422 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:10:10,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:10" (1/1) ... [2022-12-13 20:10:10,436 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:10" (1/1) ... [2022-12-13 20:10:10,454 INFO L138 Inliner]: procedures = 170, calls = 34, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 176 [2022-12-13 20:10:10,454 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:10:10,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:10:10,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:10:10,455 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:10:10,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:10" (1/1) ... [2022-12-13 20:10:10,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:10" (1/1) ... [2022-12-13 20:10:10,465 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:10" (1/1) ... [2022-12-13 20:10:10,466 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:10" (1/1) ... [2022-12-13 20:10:10,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:10" (1/1) ... [2022-12-13 20:10:10,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:10" (1/1) ... [2022-12-13 20:10:10,475 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:10" (1/1) ... [2022-12-13 20:10:10,476 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:10" (1/1) ... [2022-12-13 20:10:10,478 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:10:10,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:10:10,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:10:10,479 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:10:10,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:10" (1/1) ... [2022-12-13 20:10:10,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:10:10,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b722779-ec34-4fe6-83f5-734e97fa33e6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:10:10,505 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b722779-ec34-4fe6-83f5-734e97fa33e6/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:10:10,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b722779-ec34-4fe6-83f5-734e97fa33e6/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:10:10,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 20:10:10,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 20:10:10,533 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 20:10:10,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:10:10,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 20:10:10,533 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 20:10:10,534 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 20:10:10,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 20:10:10,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 20:10:10,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:10:10,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:10:10,535 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 20:10:10,633 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:10:10,635 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:10:10,850 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:10:10,859 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:10:10,859 INFO L300 CfgBuilder]: Removed 18 assume(true) statements. [2022-12-13 20:10:10,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:10:10 BoogieIcfgContainer [2022-12-13 20:10:10,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:10:10,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:10:10,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:10:10,868 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:10:10,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:10:10" (1/3) ... [2022-12-13 20:10:10,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@739a3c35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:10:10, skipping insertion in model container [2022-12-13 20:10:10,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:10" (2/3) ... [2022-12-13 20:10:10,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@739a3c35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:10:10, skipping insertion in model container [2022-12-13 20:10:10,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:10:10" (3/3) ... [2022-12-13 20:10:10,871 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_60-invariant_racefree.i [2022-12-13 20:10:10,880 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 20:10:10,890 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:10:10,891 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-12-13 20:10:10,891 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 20:10:10,962 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 20:10:11,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 191 transitions, 390 flow [2022-12-13 20:10:11,089 INFO L130 PetriNetUnfolder]: 33/273 cut-off events. [2022-12-13 20:10:11,089 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 20:10:11,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 273 events. 33/273 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1139 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 155. Up to 6 conditions per place. [2022-12-13 20:10:11,096 INFO L82 GeneralOperation]: Start removeDead. Operand has 172 places, 191 transitions, 390 flow [2022-12-13 20:10:11,103 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 172 places, 191 transitions, 390 flow [2022-12-13 20:10:11,106 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:10:11,117 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 172 places, 191 transitions, 390 flow [2022-12-13 20:10:11,119 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 172 places, 191 transitions, 390 flow [2022-12-13 20:10:11,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 191 transitions, 390 flow [2022-12-13 20:10:11,168 INFO L130 PetriNetUnfolder]: 33/273 cut-off events. [2022-12-13 20:10:11,168 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 20:10:11,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 273 events. 33/273 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1139 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 155. Up to 6 conditions per place. [2022-12-13 20:10:11,174 INFO L119 LiptonReduction]: Number of co-enabled transitions 11968 [2022-12-13 20:10:13,437 INFO L134 LiptonReduction]: Checked pairs total: 45279 [2022-12-13 20:10:13,437 INFO L136 LiptonReduction]: Total number of compositions: 128 [2022-12-13 20:10:13,452 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:10:13,459 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;@155179a9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:10:13,459 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-12-13 20:10:13,463 INFO L130 PetriNetUnfolder]: 0/16 cut-off events. [2022-12-13 20:10:13,463 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:10:13,464 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:10:13,464 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 20:10:13,465 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-12-13 20:10:13,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:10:13,470 INFO L85 PathProgramCache]: Analyzing trace with hash 664180275, now seen corresponding path program 1 times [2022-12-13 20:10:13,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:10:13,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038715598] [2022-12-13 20:10:13,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:10:13,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:10:13,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:13,671 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 20:10:13,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:10:13,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038715598] [2022-12-13 20:10:13,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038715598] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:10:13,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:10:13,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:10:13,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119722489] [2022-12-13 20:10:13,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:10:13,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:10:13,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:10:13,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:10:13,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:10:13,715 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 319 [2022-12-13 20:10:13,718 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 93 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 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 20:10:13,718 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:10:13,718 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 319 [2022-12-13 20:10:13,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:10:13,855 INFO L130 PetriNetUnfolder]: 273/875 cut-off events. [2022-12-13 20:10:13,855 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 20:10:13,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1464 conditions, 875 events. 273/875 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 5243 event pairs, 0 based on Foata normal form. 100/880 useless extension candidates. Maximal degree in co-relation 1412. Up to 549 conditions per place. [2022-12-13 20:10:13,861 INFO L137 encePairwiseOnDemand]: 298/319 looper letters, 50 selfloop transitions, 2 changer transitions 2/92 dead transitions. [2022-12-13 20:10:13,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 92 transitions, 300 flow [2022-12-13 20:10:13,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:10:13,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:10:13,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 571 transitions. [2022-12-13 20:10:13,874 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5966562173458725 [2022-12-13 20:10:13,875 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 571 transitions. [2022-12-13 20:10:13,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 571 transitions. [2022-12-13 20:10:13,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:10:13,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 571 transitions. [2022-12-13 20:10:13,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 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 20:10:13,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 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 20:10:13,890 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 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 20:10:13,892 INFO L175 Difference]: Start difference. First operand has 77 places, 93 transitions, 194 flow. Second operand 3 states and 571 transitions. [2022-12-13 20:10:13,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 92 transitions, 300 flow [2022-12-13 20:10:13,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 92 transitions, 300 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:10:13,897 INFO L231 Difference]: Finished difference. Result has 79 places, 73 transitions, 159 flow [2022-12-13 20:10:13,899 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=79, PETRI_TRANSITIONS=73} [2022-12-13 20:10:13,901 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 2 predicate places. [2022-12-13 20:10:13,901 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 159 flow [2022-12-13 20:10:13,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 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 20:10:13,902 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:10:13,902 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 20:10:13,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 20:10:13,902 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-12-13 20:10:13,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:10:13,903 INFO L85 PathProgramCache]: Analyzing trace with hash -887717468, now seen corresponding path program 1 times [2022-12-13 20:10:13,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:10:13,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102487580] [2022-12-13 20:10:13,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:10:13,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:10:13,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:13,958 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 20:10:13,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:10:13,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102487580] [2022-12-13 20:10:13,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102487580] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:10:13,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:10:13,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:10:13,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323025674] [2022-12-13 20:10:13,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:10:13,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:10:13,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:10:13,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:10:13,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:10:13,996 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 319 [2022-12-13 20:10:13,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 73 transitions, 159 flow. Second operand has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 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 20:10:13,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:10:13,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 319 [2022-12-13 20:10:13,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:10:14,185 INFO L130 PetriNetUnfolder]: 655/1735 cut-off events. [2022-12-13 20:10:14,185 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2022-12-13 20:10:14,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3214 conditions, 1735 events. 655/1735 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 10786 event pairs, 248 based on Foata normal form. 0/1627 useless extension candidates. Maximal degree in co-relation 3198. Up to 856 conditions per place. [2022-12-13 20:10:14,190 INFO L137 encePairwiseOnDemand]: 294/319 looper letters, 77 selfloop transitions, 18 changer transitions 0/116 dead transitions. [2022-12-13 20:10:14,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 116 transitions, 440 flow [2022-12-13 20:10:14,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:10:14,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:10:14,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 528 transitions. [2022-12-13 20:10:14,192 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2022-12-13 20:10:14,193 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 528 transitions. [2022-12-13 20:10:14,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 528 transitions. [2022-12-13 20:10:14,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:10:14,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 528 transitions. [2022-12-13 20:10:14,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 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 20:10:14,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 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 20:10:14,196 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 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 20:10:14,196 INFO L175 Difference]: Start difference. First operand has 79 places, 73 transitions, 159 flow. Second operand 3 states and 528 transitions. [2022-12-13 20:10:14,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 116 transitions, 440 flow [2022-12-13 20:10:14,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 116 transitions, 434 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:10:14,199 INFO L231 Difference]: Finished difference. Result has 80 places, 91 transitions, 313 flow [2022-12-13 20:10:14,199 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=313, PETRI_PLACES=80, PETRI_TRANSITIONS=91} [2022-12-13 20:10:14,200 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 3 predicate places. [2022-12-13 20:10:14,200 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 91 transitions, 313 flow [2022-12-13 20:10:14,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 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 20:10:14,200 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:10:14,200 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 20:10:14,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 20:10:14,201 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-12-13 20:10:14,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:10:14,201 INFO L85 PathProgramCache]: Analyzing trace with hash -887620746, now seen corresponding path program 1 times [2022-12-13 20:10:14,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:10:14,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507354448] [2022-12-13 20:10:14,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:10:14,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:10:14,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:10:14,228 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:10:14,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:10:14,262 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:10:14,263 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 20:10:14,264 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-12-13 20:10:14,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2022-12-13 20:10:14,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2022-12-13 20:10:14,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2022-12-13 20:10:14,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2022-12-13 20:10:14,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2022-12-13 20:10:14,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2022-12-13 20:10:14,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2022-12-13 20:10:14,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2022-12-13 20:10:14,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2022-12-13 20:10:14,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2022-12-13 20:10:14,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 19 remaining) [2022-12-13 20:10:14,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2022-12-13 20:10:14,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2022-12-13 20:10:14,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2022-12-13 20:10:14,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2022-12-13 20:10:14,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2022-12-13 20:10:14,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2022-12-13 20:10:14,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2022-12-13 20:10:14,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 20:10:14,269 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-13 20:10:14,272 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 20:10:14,272 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 20:10:14,296 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 20:10:14,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 233 places, 261 transitions, 540 flow [2022-12-13 20:10:14,340 INFO L130 PetriNetUnfolder]: 57/456 cut-off events. [2022-12-13 20:10:14,340 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 20:10:14,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 470 conditions, 456 events. 57/456 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2140 event pairs, 0 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 275. Up to 9 conditions per place. [2022-12-13 20:10:14,342 INFO L82 GeneralOperation]: Start removeDead. Operand has 233 places, 261 transitions, 540 flow [2022-12-13 20:10:14,346 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 233 places, 261 transitions, 540 flow [2022-12-13 20:10:14,346 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:10:14,346 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 233 places, 261 transitions, 540 flow [2022-12-13 20:10:14,346 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 233 places, 261 transitions, 540 flow [2022-12-13 20:10:14,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 233 places, 261 transitions, 540 flow [2022-12-13 20:10:14,403 INFO L130 PetriNetUnfolder]: 57/456 cut-off events. [2022-12-13 20:10:14,403 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 20:10:14,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 470 conditions, 456 events. 57/456 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2140 event pairs, 0 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 275. Up to 9 conditions per place. [2022-12-13 20:10:14,422 INFO L119 LiptonReduction]: Number of co-enabled transitions 34680 [2022-12-13 20:10:16,740 INFO L134 LiptonReduction]: Checked pairs total: 138283 [2022-12-13 20:10:16,740 INFO L136 LiptonReduction]: Total number of compositions: 157 [2022-12-13 20:10:16,741 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:10:16,742 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;@155179a9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:10:16,742 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-12-13 20:10:16,744 INFO L130 PetriNetUnfolder]: 0/14 cut-off events. [2022-12-13 20:10:16,744 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:10:16,744 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:10:16,744 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 20:10:16,744 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-12-13 20:10:16,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:10:16,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1130679421, now seen corresponding path program 1 times [2022-12-13 20:10:16,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:10:16,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48593704] [2022-12-13 20:10:16,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:10:16,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:10:16,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:16,783 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 20:10:16,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:10:16,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48593704] [2022-12-13 20:10:16,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48593704] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:10:16,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:10:16,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:10:16,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093553245] [2022-12-13 20:10:16,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:10:16,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:10:16,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:10:16,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:10:16,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:10:16,793 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 418 [2022-12-13 20:10:16,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 140 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 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 20:10:16,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:10:16,795 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 418 [2022-12-13 20:10:16,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:10:18,027 INFO L130 PetriNetUnfolder]: 7772/15912 cut-off events. [2022-12-13 20:10:18,028 INFO L131 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2022-12-13 20:10:18,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27942 conditions, 15912 events. 7772/15912 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 143885 event pairs, 6939 based on Foata normal form. 2696/17046 useless extension candidates. Maximal degree in co-relation 10391. Up to 11916 conditions per place. [2022-12-13 20:10:18,082 INFO L137 encePairwiseOnDemand]: 390/418 looper letters, 67 selfloop transitions, 2 changer transitions 0/132 dead transitions. [2022-12-13 20:10:18,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 132 transitions, 420 flow [2022-12-13 20:10:18,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:10:18,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:10:18,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 766 transitions. [2022-12-13 20:10:18,084 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6108452950558214 [2022-12-13 20:10:18,084 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 766 transitions. [2022-12-13 20:10:18,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 766 transitions. [2022-12-13 20:10:18,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:10:18,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 766 transitions. [2022-12-13 20:10:18,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 255.33333333333334) internal successors, (766), 3 states have internal predecessors, (766), 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 20:10:18,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 418.0) internal successors, (1672), 4 states have internal predecessors, (1672), 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 20:10:18,088 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 418.0) internal successors, (1672), 4 states have internal predecessors, (1672), 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 20:10:18,088 INFO L175 Difference]: Start difference. First operand has 117 places, 140 transitions, 298 flow. Second operand 3 states and 766 transitions. [2022-12-13 20:10:18,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 132 transitions, 420 flow [2022-12-13 20:10:18,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 132 transitions, 420 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:10:18,090 INFO L231 Difference]: Finished difference. Result has 119 places, 116 transitions, 260 flow [2022-12-13 20:10:18,091 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=418, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=119, PETRI_TRANSITIONS=116} [2022-12-13 20:10:18,091 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 2 predicate places. [2022-12-13 20:10:18,091 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 116 transitions, 260 flow [2022-12-13 20:10:18,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 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 20:10:18,092 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:10:18,092 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 20:10:18,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 20:10:18,092 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-12-13 20:10:18,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:10:18,092 INFO L85 PathProgramCache]: Analyzing trace with hash 709391439, now seen corresponding path program 1 times [2022-12-13 20:10:18,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:10:18,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211114331] [2022-12-13 20:10:18,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:10:18,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:10:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:18,113 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 20:10:18,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:10:18,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211114331] [2022-12-13 20:10:18,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211114331] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:10:18,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:10:18,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:10:18,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311205417] [2022-12-13 20:10:18,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:10:18,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:10:18,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:10:18,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:10:18,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:10:18,157 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 418 [2022-12-13 20:10:18,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 116 transitions, 260 flow. Second operand has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 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 20:10:18,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:10:18,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 418 [2022-12-13 20:10:18,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:10:22,295 INFO L130 PetriNetUnfolder]: 39278/72215 cut-off events. [2022-12-13 20:10:22,295 INFO L131 PetriNetUnfolder]: For 1640/1640 co-relation queries the response was YES. [2022-12-13 20:10:22,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135902 conditions, 72215 events. 39278/72215 cut-off events. For 1640/1640 co-relation queries the response was YES. Maximal size of possible extension queue 1498. Compared 683753 event pairs, 15676 based on Foata normal form. 0/66911 useless extension candidates. Maximal degree in co-relation 135740. Up to 37929 conditions per place. [2022-12-13 20:10:22,529 INFO L137 encePairwiseOnDemand]: 379/418 looper letters, 121 selfloop transitions, 28 changer transitions 0/184 dead transitions. [2022-12-13 20:10:22,529 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 184 transitions, 712 flow [2022-12-13 20:10:22,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:10:22,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:10:22,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 716 transitions. [2022-12-13 20:10:22,531 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5709728867623605 [2022-12-13 20:10:22,531 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 716 transitions. [2022-12-13 20:10:22,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 716 transitions. [2022-12-13 20:10:22,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:10:22,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 716 transitions. [2022-12-13 20:10:22,532 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 20:10:22,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 418.0) internal successors, (1672), 4 states have internal predecessors, (1672), 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 20:10:22,534 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 418.0) internal successors, (1672), 4 states have internal predecessors, (1672), 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 20:10:22,534 INFO L175 Difference]: Start difference. First operand has 119 places, 116 transitions, 260 flow. Second operand 3 states and 716 transitions. [2022-12-13 20:10:22,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 184 transitions, 712 flow [2022-12-13 20:10:22,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 184 transitions, 709 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:10:22,537 INFO L231 Difference]: Finished difference. Result has 122 places, 144 transitions, 504 flow [2022-12-13 20:10:22,537 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=418, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=504, PETRI_PLACES=122, PETRI_TRANSITIONS=144} [2022-12-13 20:10:22,538 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 5 predicate places. [2022-12-13 20:10:22,538 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 144 transitions, 504 flow [2022-12-13 20:10:22,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 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 20:10:22,538 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:10:22,538 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 20:10:22,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 20:10:22,539 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-12-13 20:10:22,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:10:22,539 INFO L85 PathProgramCache]: Analyzing trace with hash 504104172, now seen corresponding path program 1 times [2022-12-13 20:10:22,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:10:22,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803583232] [2022-12-13 20:10:22,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:10:22,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:10:22,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:10:22,550 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:10:22,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:10:22,561 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:10:22,562 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 20:10:22,562 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2022-12-13 20:10:22,562 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2022-12-13 20:10:22,562 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2022-12-13 20:10:22,562 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2022-12-13 20:10:22,562 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2022-12-13 20:10:22,562 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2022-12-13 20:10:22,562 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2022-12-13 20:10:22,563 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2022-12-13 20:10:22,563 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2022-12-13 20:10:22,563 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2022-12-13 20:10:22,563 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2022-12-13 20:10:22,563 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2022-12-13 20:10:22,563 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2022-12-13 20:10:22,563 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2022-12-13 20:10:22,563 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2022-12-13 20:10:22,563 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2022-12-13 20:10:22,563 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2022-12-13 20:10:22,563 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2022-12-13 20:10:22,563 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2022-12-13 20:10:22,564 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2022-12-13 20:10:22,564 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2022-12-13 20:10:22,564 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2022-12-13 20:10:22,564 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2022-12-13 20:10:22,564 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2022-12-13 20:10:22,564 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2022-12-13 20:10:22,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 20:10:22,564 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-13 20:10:22,565 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 20:10:22,565 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 20:10:22,586 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 20:10:22,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 294 places, 331 transitions, 692 flow [2022-12-13 20:10:22,661 INFO L130 PetriNetUnfolder]: 86/684 cut-off events. [2022-12-13 20:10:22,661 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 20:10:22,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 712 conditions, 684 events. 86/684 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3352 event pairs, 1 based on Foata normal form. 0/548 useless extension candidates. Maximal degree in co-relation 464. Up to 16 conditions per place. [2022-12-13 20:10:22,665 INFO L82 GeneralOperation]: Start removeDead. Operand has 294 places, 331 transitions, 692 flow [2022-12-13 20:10:22,670 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 294 places, 331 transitions, 692 flow [2022-12-13 20:10:22,671 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:10:22,671 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 294 places, 331 transitions, 692 flow [2022-12-13 20:10:22,671 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 294 places, 331 transitions, 692 flow [2022-12-13 20:10:22,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 294 places, 331 transitions, 692 flow [2022-12-13 20:10:22,742 INFO L130 PetriNetUnfolder]: 86/684 cut-off events. [2022-12-13 20:10:22,742 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 20:10:22,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 712 conditions, 684 events. 86/684 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3352 event pairs, 1 based on Foata normal form. 0/548 useless extension candidates. Maximal degree in co-relation 464. Up to 16 conditions per place. [2022-12-13 20:10:22,769 INFO L119 LiptonReduction]: Number of co-enabled transitions 66504 [2022-12-13 20:10:25,265 INFO L134 LiptonReduction]: Checked pairs total: 282837 [2022-12-13 20:10:25,265 INFO L136 LiptonReduction]: Total number of compositions: 191 [2022-12-13 20:10:25,266 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:10:25,267 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;@155179a9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:10:25,267 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-12-13 20:10:25,269 INFO L130 PetriNetUnfolder]: 0/14 cut-off events. [2022-12-13 20:10:25,269 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:10:25,269 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:10:25,269 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 20:10:25,269 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-12-13 20:10:25,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:10:25,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1695408250, now seen corresponding path program 1 times [2022-12-13 20:10:25,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:10:25,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65450203] [2022-12-13 20:10:25,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:10:25,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:10:25,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:25,294 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 20:10:25,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:10:25,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65450203] [2022-12-13 20:10:25,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65450203] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:10:25,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:10:25,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:10:25,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201921654] [2022-12-13 20:10:25,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:10:25,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:10:25,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:10:25,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:10:25,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:10:25,306 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 522 [2022-12-13 20:10:25,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 186 transitions, 402 flow. Second operand has 3 states, 3 states have (on average 280.6666666666667) internal successors, (842), 3 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:10:25,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:10:25,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 522 [2022-12-13 20:10:25,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:10:46,042 INFO L130 PetriNetUnfolder]: 179920/294318 cut-off events. [2022-12-13 20:10:46,042 INFO L131 PetriNetUnfolder]: For 2280/2280 co-relation queries the response was YES. [2022-12-13 20:10:46,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 539152 conditions, 294318 events. 179920/294318 cut-off events. For 2280/2280 co-relation queries the response was YES. Maximal size of possible extension queue 6952. Compared 3059167 event pairs, 162972 based on Foata normal form. 56882/327688 useless extension candidates. Maximal degree in co-relation 98518. Up to 243042 conditions per place. [2022-12-13 20:10:47,466 INFO L137 encePairwiseOnDemand]: 486/522 looper letters, 83 selfloop transitions, 2 changer transitions 0/169 dead transitions. [2022-12-13 20:10:47,467 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 169 transitions, 538 flow [2022-12-13 20:10:47,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:10:47,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:10:47,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 964 transitions. [2022-12-13 20:10:47,469 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6155810983397191 [2022-12-13 20:10:47,469 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 964 transitions. [2022-12-13 20:10:47,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 964 transitions. [2022-12-13 20:10:47,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:10:47,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 964 transitions. [2022-12-13 20:10:47,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 321.3333333333333) internal successors, (964), 3 states have internal predecessors, (964), 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 20:10:47,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 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 20:10:47,474 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 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 20:10:47,474 INFO L175 Difference]: Start difference. First operand has 155 places, 186 transitions, 402 flow. Second operand 3 states and 964 transitions. [2022-12-13 20:10:47,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 169 transitions, 538 flow [2022-12-13 20:10:47,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 169 transitions, 538 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:10:47,478 INFO L231 Difference]: Finished difference. Result has 157 places, 154 transitions, 348 flow [2022-12-13 20:10:47,478 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=348, PETRI_PLACES=157, PETRI_TRANSITIONS=154} [2022-12-13 20:10:47,478 INFO L288 CegarLoopForPetriNet]: 155 programPoint places, 2 predicate places. [2022-12-13 20:10:47,479 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 154 transitions, 348 flow [2022-12-13 20:10:47,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 280.6666666666667) internal successors, (842), 3 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:10:47,479 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:10:47,479 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 20:10:47,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 20:10:47,479 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-12-13 20:10:47,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:10:47,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1039076582, now seen corresponding path program 1 times [2022-12-13 20:10:47,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:10:47,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120200988] [2022-12-13 20:10:47,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:10:47,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:10:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:47,496 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 20:10:47,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:10:47,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120200988] [2022-12-13 20:10:47,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120200988] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:10:47,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:10:47,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:10:47,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710517778] [2022-12-13 20:10:47,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:10:47,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:10:47,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:10:47,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:10:47,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:10:47,554 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 522 [2022-12-13 20:10:47,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 154 transitions, 348 flow. Second operand has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 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 20:10:47,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:10:47,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 522 [2022-12-13 20:10:47,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand