./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/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_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/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_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/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 2a10f98c1a89e2ac521234c9e4f0eca565cc5bc1484e9c7d67d861e216c6f9ba --- 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 19:06:14,178 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:06:14,180 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:06:14,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:06:14,198 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:06:14,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:06:14,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:06:14,202 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:06:14,203 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:06:14,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:06:14,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:06:14,206 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:06:14,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:06:14,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:06:14,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:06:14,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:06:14,210 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:06:14,211 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:06:14,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:06:14,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:06:14,215 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:06:14,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:06:14,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:06:14,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:06:14,221 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:06:14,222 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:06:14,222 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:06:14,223 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:06:14,223 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:06:14,224 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:06:14,224 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:06:14,225 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:06:14,226 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:06:14,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:06:14,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:06:14,227 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:06:14,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:06:14,228 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:06:14,228 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:06:14,229 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:06:14,230 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:06:14,230 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-12-13 19:06:14,247 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:06:14,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:06:14,247 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:06:14,248 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:06:14,248 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:06:14,248 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:06:14,249 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:06:14,249 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:06:14,249 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:06:14,249 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:06:14,249 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 19:06:14,249 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 19:06:14,249 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:06:14,249 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 19:06:14,249 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:06:14,249 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:06:14,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:06:14,250 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:06:14,250 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-13 19:06:14,250 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 19:06:14,250 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:06:14,250 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:06:14,250 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:06:14,250 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:06:14,250 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:06:14,250 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:06:14,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:06:14,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:06:14,251 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:06:14,251 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:06:14,251 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:06:14,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 19:06:14,251 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:06:14,251 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:06:14,251 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:06:14,251 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:06:14,251 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:06:14,252 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_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a10f98c1a89e2ac521234c9e4f0eca565cc5bc1484e9c7d67d861e216c6f9ba [2022-12-13 19:06:14,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:06:14,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:06:14,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:06:14,443 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:06:14,443 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:06:14,444 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i [2022-12-13 19:06:16,973 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:06:17,199 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:06:17,199 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i [2022-12-13 19:06:17,212 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/bin/uautomizer-uyxdKDjOR8/data/cd7a58c5e/643510f6296d42ce961def19b9564b27/FLAGfc1f92549 [2022-12-13 19:06:17,526 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/bin/uautomizer-uyxdKDjOR8/data/cd7a58c5e/643510f6296d42ce961def19b9564b27 [2022-12-13 19:06:17,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:06:17,530 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:06:17,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:06:17,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:06:17,534 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:06:17,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:06:17" (1/1) ... [2022-12-13 19:06:17,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c7e2d19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:06:17, skipping insertion in model container [2022-12-13 19:06:17,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:06:17" (1/1) ... [2022-12-13 19:06:17,543 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:06:17,578 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:06:17,868 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_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i[41323,41336] [2022-12-13 19:06:17,887 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:06:17,899 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:06:17,923 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_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i[41323,41336] [2022-12-13 19:06:17,934 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:06:17,970 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:06:17,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:06:17 WrapperNode [2022-12-13 19:06:17,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:06:17,972 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:06:17,972 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:06:17,972 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:06:17,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:06:17" (1/1) ... [2022-12-13 19:06:17,989 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:06:17" (1/1) ... [2022-12-13 19:06:18,009 INFO L138 Inliner]: procedures = 271, calls = 31, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 256 [2022-12-13 19:06:18,010 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:06:18,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:06:18,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:06:18,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:06:18,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:06:17" (1/1) ... [2022-12-13 19:06:18,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:06:17" (1/1) ... [2022-12-13 19:06:18,021 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:06:17" (1/1) ... [2022-12-13 19:06:18,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:06:17" (1/1) ... [2022-12-13 19:06:18,031 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:06:17" (1/1) ... [2022-12-13 19:06:18,035 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:06:17" (1/1) ... [2022-12-13 19:06:18,036 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:06:17" (1/1) ... [2022-12-13 19:06:18,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:06:17" (1/1) ... [2022-12-13 19:06:18,040 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:06:18,041 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:06:18,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:06:18,041 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:06:18,041 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:06:17" (1/1) ... [2022-12-13 19:06:18,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:06:18,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:06:18,064 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:06:18,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:06:18,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 19:06:18,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 19:06:18,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 19:06:18,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 19:06:18,097 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 19:06:18,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:06:18,098 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 19:06:18,098 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 19:06:18,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 19:06:18,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:06:18,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:06:18,100 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 19:06:18,216 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:06:18,218 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:06:18,534 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:06:18,546 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:06:18,546 INFO L300 CfgBuilder]: Removed 25 assume(true) statements. [2022-12-13 19:06:18,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:06:18 BoogieIcfgContainer [2022-12-13 19:06:18,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:06:18,552 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:06:18,552 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:06:18,555 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:06:18,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:06:17" (1/3) ... [2022-12-13 19:06:18,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae772e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:06:18, skipping insertion in model container [2022-12-13 19:06:18,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:06:17" (2/3) ... [2022-12-13 19:06:18,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae772e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:06:18, skipping insertion in model container [2022-12-13 19:06:18,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:06:18" (3/3) ... [2022-12-13 19:06:18,557 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_70-funloop_racefree.i [2022-12-13 19:06:18,566 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 19:06:18,575 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:06:18,575 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-12-13 19:06:18,575 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 19:06:18,663 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 19:06:18,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 272 transitions, 552 flow [2022-12-13 19:06:18,774 INFO L130 PetriNetUnfolder]: 49/395 cut-off events. [2022-12-13 19:06:18,774 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 19:06:18,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 395 events. 49/395 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1669 event pairs, 0 based on Foata normal form. 0/326 useless extension candidates. Maximal degree in co-relation 232. Up to 8 conditions per place. [2022-12-13 19:06:18,782 INFO L82 GeneralOperation]: Start removeDead. Operand has 242 places, 272 transitions, 552 flow [2022-12-13 19:06:18,787 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 242 places, 272 transitions, 552 flow [2022-12-13 19:06:18,790 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 19:06:18,797 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 242 places, 272 transitions, 552 flow [2022-12-13 19:06:18,799 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 242 places, 272 transitions, 552 flow [2022-12-13 19:06:18,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 272 transitions, 552 flow [2022-12-13 19:06:18,845 INFO L130 PetriNetUnfolder]: 49/395 cut-off events. [2022-12-13 19:06:18,845 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 19:06:18,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 395 events. 49/395 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1669 event pairs, 0 based on Foata normal form. 0/326 useless extension candidates. Maximal degree in co-relation 232. Up to 8 conditions per place. [2022-12-13 19:06:18,855 INFO L119 LiptonReduction]: Number of co-enabled transitions 26832 [2022-12-13 19:06:21,071 INFO L134 LiptonReduction]: Checked pairs total: 100603 [2022-12-13 19:06:21,071 INFO L136 LiptonReduction]: Total number of compositions: 164 [2022-12-13 19:06:21,085 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:06:21,091 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;@24947fa7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:06:21,092 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-12-13 19:06:21,097 INFO L130 PetriNetUnfolder]: 8/37 cut-off events. [2022-12-13 19:06:21,097 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:06:21,097 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:06:21,098 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2022-12-13 19:06:21,098 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-12-13 19:06:21,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:06:21,103 INFO L85 PathProgramCache]: Analyzing trace with hash -749241285, now seen corresponding path program 1 times [2022-12-13 19:06:21,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:06:21,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612462998] [2022-12-13 19:06:21,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:06:21,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:06:21,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:06:21,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 19:06:21,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:06:21,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612462998] [2022-12-13 19:06:21,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612462998] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:06:21,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:06:21,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:06:21,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714288072] [2022-12-13 19:06:21,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:06:21,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:06:21,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:06:21,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:06:21,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:06:21,313 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 436 [2022-12-13 19:06:21,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 136 transitions, 280 flow. Second operand has 3 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 19:06:21,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:06:21,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 436 [2022-12-13 19:06:21,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:06:21,556 INFO L130 PetriNetUnfolder]: 483/1720 cut-off events. [2022-12-13 19:06:21,557 INFO L131 PetriNetUnfolder]: For 3/9 co-relation queries the response was YES. [2022-12-13 19:06:21,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2631 conditions, 1720 events. 483/1720 cut-off events. For 3/9 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 11931 event pairs, 396 based on Foata normal form. 193/1753 useless extension candidates. Maximal degree in co-relation 2527. Up to 903 conditions per place. [2022-12-13 19:06:21,568 INFO L137 encePairwiseOnDemand]: 412/436 looper letters, 47 selfloop transitions, 2 changer transitions 0/116 dead transitions. [2022-12-13 19:06:21,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 116 transitions, 338 flow [2022-12-13 19:06:21,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:06:21,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:06:21,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 782 transitions. [2022-12-13 19:06:21,584 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5978593272171254 [2022-12-13 19:06:21,585 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 782 transitions. [2022-12-13 19:06:21,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 782 transitions. [2022-12-13 19:06:21,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:06:21,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 782 transitions. [2022-12-13 19:06:21,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 260.6666666666667) internal successors, (782), 3 states have internal predecessors, (782), 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 19:06:21,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 436.0) internal successors, (1744), 4 states have internal predecessors, (1744), 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 19:06:21,603 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 436.0) internal successors, (1744), 4 states have internal predecessors, (1744), 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 19:06:21,604 INFO L175 Difference]: Start difference. First operand has 112 places, 136 transitions, 280 flow. Second operand 3 states and 782 transitions. [2022-12-13 19:06:21,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 116 transitions, 338 flow [2022-12-13 19:06:21,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 116 transitions, 338 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 19:06:21,611 INFO L231 Difference]: Finished difference. Result has 115 places, 116 transitions, 250 flow [2022-12-13 19:06:21,613 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=436, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=112, 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=250, PETRI_PLACES=115, PETRI_TRANSITIONS=116} [2022-12-13 19:06:21,617 INFO L288 CegarLoopForPetriNet]: 112 programPoint places, 3 predicate places. [2022-12-13 19:06:21,617 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 116 transitions, 250 flow [2022-12-13 19:06:21,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 19:06:21,618 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:06:21,618 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-13 19:06:21,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 19:06:21,618 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-12-13 19:06:21,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:06:21,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1279760876, now seen corresponding path program 1 times [2022-12-13 19:06:21,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:06:21,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228772295] [2022-12-13 19:06:21,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:06:21,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:06:21,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:06:21,702 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 19:06:21,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:06:21,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228772295] [2022-12-13 19:06:21,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228772295] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:06:21,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668225506] [2022-12-13 19:06:21,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:06:21,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:06:21,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:06:21,704 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:06:21,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 19:06:21,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:06:21,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:06:21,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:06:21,804 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 19:06:21,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:06:21,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 19:06:21,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668225506] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:06:21,819 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:06:21,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-12-13 19:06:21,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286196571] [2022-12-13 19:06:21,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:06:21,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:06:21,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:06:21,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:06:21,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:06:21,837 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 436 [2022-12-13 19:06:21,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 116 transitions, 250 flow. Second operand has 6 states, 6 states have (on average 237.5) internal successors, (1425), 6 states have internal predecessors, (1425), 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 19:06:21,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:06:21,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 436 [2022-12-13 19:06:21,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:06:22,126 INFO L130 PetriNetUnfolder]: 483/1723 cut-off events. [2022-12-13 19:06:22,126 INFO L131 PetriNetUnfolder]: For 3/9 co-relation queries the response was YES. [2022-12-13 19:06:22,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2647 conditions, 1723 events. 483/1723 cut-off events. For 3/9 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 11941 event pairs, 396 based on Foata normal form. 0/1563 useless extension candidates. Maximal degree in co-relation 2635. Up to 903 conditions per place. [2022-12-13 19:06:22,135 INFO L137 encePairwiseOnDemand]: 433/436 looper letters, 47 selfloop transitions, 5 changer transitions 0/119 dead transitions. [2022-12-13 19:06:22,135 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 119 transitions, 366 flow [2022-12-13 19:06:22,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:06:22,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 19:06:22,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1471 transitions. [2022-12-13 19:06:22,140 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5623088685015291 [2022-12-13 19:06:22,140 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1471 transitions. [2022-12-13 19:06:22,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1471 transitions. [2022-12-13 19:06:22,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:06:22,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1471 transitions. [2022-12-13 19:06:22,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 245.16666666666666) internal successors, (1471), 6 states have internal predecessors, (1471), 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 19:06:22,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 436.0) internal successors, (3052), 7 states have internal predecessors, (3052), 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 19:06:22,162 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 436.0) internal successors, (3052), 7 states have internal predecessors, (3052), 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 19:06:22,162 INFO L175 Difference]: Start difference. First operand has 115 places, 116 transitions, 250 flow. Second operand 6 states and 1471 transitions. [2022-12-13 19:06:22,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 119 transitions, 366 flow [2022-12-13 19:06:22,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 119 transitions, 362 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 19:06:22,166 INFO L231 Difference]: Finished difference. Result has 122 places, 119 transitions, 282 flow [2022-12-13 19:06:22,166 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=436, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=282, PETRI_PLACES=122, PETRI_TRANSITIONS=119} [2022-12-13 19:06:22,167 INFO L288 CegarLoopForPetriNet]: 112 programPoint places, 10 predicate places. [2022-12-13 19:06:22,167 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 119 transitions, 282 flow [2022-12-13 19:06:22,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 237.5) internal successors, (1425), 6 states have internal predecessors, (1425), 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 19:06:22,168 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:06:22,168 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2022-12-13 19:06:22,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 19:06:22,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:06:22,369 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-12-13 19:06:22,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:06:22,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1656102789, now seen corresponding path program 2 times [2022-12-13 19:06:22,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:06:22,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296517056] [2022-12-13 19:06:22,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:06:22,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:06:22,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:06:22,586 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 19:06:22,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:06:22,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296517056] [2022-12-13 19:06:22,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296517056] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:06:22,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215741784] [2022-12-13 19:06:22,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:06:22,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:06:22,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:06:22,588 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:06:22,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 19:06:22,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 19:06:22,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:06:22,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 19:06:22,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:06:22,662 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 19:06:22,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:06:22,704 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 19:06:22,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215741784] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:06:22,704 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:06:22,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-12-13 19:06:22,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015907148] [2022-12-13 19:06:22,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:06:22,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 19:06:22,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:06:22,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 19:06:22,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-12-13 19:06:22,733 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 436 [2022-12-13 19:06:22,737 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 119 transitions, 282 flow. Second operand has 12 states, 12 states have (on average 237.25) internal successors, (2847), 12 states have internal predecessors, (2847), 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 19:06:22,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:06:22,737 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 436 [2022-12-13 19:06:22,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:06:23,024 INFO L130 PetriNetUnfolder]: 483/1729 cut-off events. [2022-12-13 19:06:23,024 INFO L131 PetriNetUnfolder]: For 23/29 co-relation queries the response was YES. [2022-12-13 19:06:23,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2684 conditions, 1729 events. 483/1729 cut-off events. For 23/29 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 11923 event pairs, 396 based on Foata normal form. 6/1576 useless extension candidates. Maximal degree in co-relation 2626. Up to 903 conditions per place. [2022-12-13 19:06:23,029 INFO L137 encePairwiseOnDemand]: 433/436 looper letters, 47 selfloop transitions, 11 changer transitions 0/125 dead transitions. [2022-12-13 19:06:23,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 125 transitions, 434 flow [2022-12-13 19:06:23,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 19:06:23,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 19:06:23,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2896 transitions. [2022-12-13 19:06:23,033 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5535168195718655 [2022-12-13 19:06:23,033 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2896 transitions. [2022-12-13 19:06:23,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2896 transitions. [2022-12-13 19:06:23,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:06:23,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2896 transitions. [2022-12-13 19:06:23,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 241.33333333333334) internal successors, (2896), 12 states have internal predecessors, (2896), 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 19:06:23,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 436.0) internal successors, (5668), 13 states have internal predecessors, (5668), 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 19:06:23,047 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 436.0) internal successors, (5668), 13 states have internal predecessors, (5668), 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 19:06:23,047 INFO L175 Difference]: Start difference. First operand has 122 places, 119 transitions, 282 flow. Second operand 12 states and 2896 transitions. [2022-12-13 19:06:23,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 125 transitions, 434 flow [2022-12-13 19:06:23,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 125 transitions, 420 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-13 19:06:23,051 INFO L231 Difference]: Finished difference. Result has 138 places, 125 transitions, 352 flow [2022-12-13 19:06:23,052 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=436, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=352, PETRI_PLACES=138, PETRI_TRANSITIONS=125} [2022-12-13 19:06:23,052 INFO L288 CegarLoopForPetriNet]: 112 programPoint places, 26 predicate places. [2022-12-13 19:06:23,052 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 125 transitions, 352 flow [2022-12-13 19:06:23,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 237.25) internal successors, (2847), 12 states have internal predecessors, (2847), 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 19:06:23,054 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:06:23,054 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2022-12-13 19:06:23,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 19:06:23,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:06:23,255 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-12-13 19:06:23,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:06:23,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1030470363, now seen corresponding path program 3 times [2022-12-13 19:06:23,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:06:23,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326462794] [2022-12-13 19:06:23,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:06:23,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:06:23,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:06:23,287 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:06:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:06:23,323 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:06:23,323 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 19:06:23,324 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-12-13 19:06:23,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2022-12-13 19:06:23,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2022-12-13 19:06:23,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2022-12-13 19:06:23,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2022-12-13 19:06:23,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2022-12-13 19:06:23,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2022-12-13 19:06:23,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2022-12-13 19:06:23,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2022-12-13 19:06:23,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2022-12-13 19:06:23,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2022-12-13 19:06:23,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2022-12-13 19:06:23,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2022-12-13 19:06:23,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2022-12-13 19:06:23,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2022-12-13 19:06:23,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2022-12-13 19:06:23,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2022-12-13 19:06:23,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 19:06:23,329 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2022-12-13 19:06:23,331 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 19:06:23,331 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 19:06:23,375 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 19:06:23,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 335 places, 378 transitions, 774 flow [2022-12-13 19:06:23,461 INFO L130 PetriNetUnfolder]: 82/655 cut-off events. [2022-12-13 19:06:23,461 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 19:06:23,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 669 conditions, 655 events. 82/655 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3465 event pairs, 0 based on Foata normal form. 0/540 useless extension candidates. Maximal degree in co-relation 397. Up to 12 conditions per place. [2022-12-13 19:06:23,465 INFO L82 GeneralOperation]: Start removeDead. Operand has 335 places, 378 transitions, 774 flow [2022-12-13 19:06:23,469 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 335 places, 378 transitions, 774 flow [2022-12-13 19:06:23,469 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 19:06:23,469 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 335 places, 378 transitions, 774 flow [2022-12-13 19:06:23,469 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 335 places, 378 transitions, 774 flow [2022-12-13 19:06:23,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 335 places, 378 transitions, 774 flow [2022-12-13 19:06:23,552 INFO L130 PetriNetUnfolder]: 82/655 cut-off events. [2022-12-13 19:06:23,552 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 19:06:23,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 669 conditions, 655 events. 82/655 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3465 event pairs, 0 based on Foata normal form. 0/540 useless extension candidates. Maximal degree in co-relation 397. Up to 12 conditions per place. [2022-12-13 19:06:23,596 INFO L119 LiptonReduction]: Number of co-enabled transitions 77584 [2022-12-13 19:06:26,428 INFO L134 LiptonReduction]: Checked pairs total: 297622 [2022-12-13 19:06:26,428 INFO L136 LiptonReduction]: Total number of compositions: 218 [2022-12-13 19:06:26,431 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:06:26,432 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;@24947fa7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:06:26,432 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-12-13 19:06:26,436 INFO L130 PetriNetUnfolder]: 13/65 cut-off events. [2022-12-13 19:06:26,437 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 19:06:26,437 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:06:26,437 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:06:26,437 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-12-13 19:06:26,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:06:26,437 INFO L85 PathProgramCache]: Analyzing trace with hash 372292872, now seen corresponding path program 1 times [2022-12-13 19:06:26,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:06:26,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590056919] [2022-12-13 19:06:26,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:06:26,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:06:26,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:06:26,464 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 19:06:26,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:06:26,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590056919] [2022-12-13 19:06:26,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590056919] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:06:26,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:06:26,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:06:26,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502584245] [2022-12-13 19:06:26,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:06:26,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:06:26,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:06:26,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:06:26,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:06:26,476 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 596 [2022-12-13 19:06:26,477 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 199 transitions, 416 flow. Second operand has 3 states, 3 states have (on average 329.6666666666667) internal successors, (989), 3 states have internal predecessors, (989), 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 19:06:26,478 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:06:26,478 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 596 [2022-12-13 19:06:26,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:06:29,585 INFO L130 PetriNetUnfolder]: 18367/42020 cut-off events. [2022-12-13 19:06:29,585 INFO L131 PetriNetUnfolder]: For 187/260 co-relation queries the response was YES. [2022-12-13 19:06:29,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68180 conditions, 42020 events. 18367/42020 cut-off events. For 187/260 co-relation queries the response was YES. Maximal size of possible extension queue 974. Compared 444837 event pairs, 15876 based on Foata normal form. 5026/42510 useless extension candidates. Maximal degree in co-relation 30348. Up to 26041 conditions per place. [2022-12-13 19:06:29,847 INFO L137 encePairwiseOnDemand]: 562/596 looper letters, 68 selfloop transitions, 2 changer transitions 0/169 dead transitions. [2022-12-13 19:06:29,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 169 transitions, 496 flow [2022-12-13 19:06:29,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:06:29,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:06:29,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1086 transitions. [2022-12-13 19:06:29,850 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6073825503355704 [2022-12-13 19:06:29,850 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1086 transitions. [2022-12-13 19:06:29,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1086 transitions. [2022-12-13 19:06:29,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:06:29,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1086 transitions. [2022-12-13 19:06:29,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 362.0) internal successors, (1086), 3 states have internal predecessors, (1086), 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 19:06:29,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 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 19:06:29,856 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 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 19:06:29,856 INFO L175 Difference]: Start difference. First operand has 164 places, 199 transitions, 416 flow. Second operand 3 states and 1086 transitions. [2022-12-13 19:06:29,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 169 transitions, 496 flow [2022-12-13 19:06:29,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 169 transitions, 496 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 19:06:29,862 INFO L231 Difference]: Finished difference. Result has 167 places, 169 transitions, 366 flow [2022-12-13 19:06:29,863 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=366, PETRI_PLACES=167, PETRI_TRANSITIONS=169} [2022-12-13 19:06:29,864 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 3 predicate places. [2022-12-13 19:06:29,864 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 169 transitions, 366 flow [2022-12-13 19:06:29,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 329.6666666666667) internal successors, (989), 3 states have internal predecessors, (989), 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 19:06:29,865 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:06:29,865 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:06:29,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 19:06:29,865 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-12-13 19:06:29,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:06:29,866 INFO L85 PathProgramCache]: Analyzing trace with hash 462991830, now seen corresponding path program 1 times [2022-12-13 19:06:29,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:06:29,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359730951] [2022-12-13 19:06:29,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:06:29,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:06:29,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:06:29,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:06:29,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:06:29,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359730951] [2022-12-13 19:06:29,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359730951] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:06:29,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111525300] [2022-12-13 19:06:29,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:06:29,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:06:29,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:06:29,904 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:06:29,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 19:06:29,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:06:29,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 19:06:29,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:06:29,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:06:29,972 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:06:29,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111525300] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:06:29,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:06:29,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-12-13 19:06:29,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038165502] [2022-12-13 19:06:29,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:06:29,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:06:29,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:06:29,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:06:29,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:06:29,983 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 596 [2022-12-13 19:06:29,985 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 169 transitions, 366 flow. Second operand has 3 states, 3 states have (on average 330.0) internal successors, (990), 3 states have internal predecessors, (990), 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 19:06:29,985 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:06:29,985 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 596 [2022-12-13 19:06:29,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:06:33,343 INFO L130 PetriNetUnfolder]: 17982/41793 cut-off events. [2022-12-13 19:06:33,343 INFO L131 PetriNetUnfolder]: For 158/278 co-relation queries the response was YES. [2022-12-13 19:06:33,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67963 conditions, 41793 events. 17982/41793 cut-off events. For 158/278 co-relation queries the response was YES. Maximal size of possible extension queue 965. Compared 451127 event pairs, 7596 based on Foata normal form. 0/37365 useless extension candidates. Maximal degree in co-relation 67950. Up to 26001 conditions per place. [2022-12-13 19:06:33,565 INFO L137 encePairwiseOnDemand]: 593/596 looper letters, 89 selfloop transitions, 2 changer transitions 0/190 dead transitions. [2022-12-13 19:06:33,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 190 transitions, 590 flow [2022-12-13 19:06:33,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:06:33,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:06:33,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1075 transitions. [2022-12-13 19:06:33,568 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6012304250559284 [2022-12-13 19:06:33,568 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1075 transitions. [2022-12-13 19:06:33,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1075 transitions. [2022-12-13 19:06:33,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:06:33,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1075 transitions. [2022-12-13 19:06:33,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 358.3333333333333) internal successors, (1075), 3 states have internal predecessors, (1075), 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 19:06:33,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 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 19:06:33,572 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 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 19:06:33,573 INFO L175 Difference]: Start difference. First operand has 167 places, 169 transitions, 366 flow. Second operand 3 states and 1075 transitions. [2022-12-13 19:06:33,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 190 transitions, 590 flow [2022-12-13 19:06:33,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 190 transitions, 586 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 19:06:33,578 INFO L231 Difference]: Finished difference. Result has 169 places, 170 transitions, 374 flow [2022-12-13 19:06:33,578 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=374, PETRI_PLACES=169, PETRI_TRANSITIONS=170} [2022-12-13 19:06:33,579 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 5 predicate places. [2022-12-13 19:06:33,579 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 170 transitions, 374 flow [2022-12-13 19:06:33,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 330.0) internal successors, (990), 3 states have internal predecessors, (990), 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 19:06:33,580 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:06:33,580 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 19:06:33,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 19:06:33,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:06:33,781 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-12-13 19:06:33,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:06:33,782 INFO L85 PathProgramCache]: Analyzing trace with hash 139111209, now seen corresponding path program 1 times [2022-12-13 19:06:33,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:06:33,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892518924] [2022-12-13 19:06:33,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:06:33,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:06:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:06:33,880 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 19:06:33,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:06:33,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892518924] [2022-12-13 19:06:33,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892518924] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:06:33,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809470509] [2022-12-13 19:06:33,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:06:33,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:06:33,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:06:33,883 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:06:33,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 19:06:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:06:33,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:06:33,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:06:33,967 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 19:06:33,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:06:33,979 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 19:06:33,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809470509] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:06:33,980 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:06:33,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 19:06:33,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939328541] [2022-12-13 19:06:33,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:06:33,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:06:33,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:06:33,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:06:33,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:06:33,999 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 596 [2022-12-13 19:06:34,002 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 170 transitions, 374 flow. Second operand has 7 states, 7 states have (on average 328.7142857142857) internal successors, (2301), 7 states have internal predecessors, (2301), 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 19:06:34,003 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:06:34,003 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 596 [2022-12-13 19:06:34,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:06:37,074 INFO L130 PetriNetUnfolder]: 18400/42149 cut-off events. [2022-12-13 19:06:37,074 INFO L131 PetriNetUnfolder]: For 940/1016 co-relation queries the response was YES. [2022-12-13 19:06:37,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69082 conditions, 42149 events. 18400/42149 cut-off events. For 940/1016 co-relation queries the response was YES. Maximal size of possible extension queue 972. Compared 447798 event pairs, 15876 based on Foata normal form. 3/37920 useless extension candidates. Maximal degree in co-relation 69054. Up to 26022 conditions per place. [2022-12-13 19:06:37,217 INFO L137 encePairwiseOnDemand]: 593/596 looper letters, 69 selfloop transitions, 5 changer transitions 0/173 dead transitions. [2022-12-13 19:06:37,217 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 173 transitions, 534 flow [2022-12-13 19:06:37,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:06:37,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 19:06:37,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2038 transitions. [2022-12-13 19:06:37,221 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.569910514541387 [2022-12-13 19:06:37,221 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2038 transitions. [2022-12-13 19:06:37,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2038 transitions. [2022-12-13 19:06:37,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:06:37,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2038 transitions. [2022-12-13 19:06:37,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 339.6666666666667) internal successors, (2038), 6 states have internal predecessors, (2038), 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 19:06:37,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 596.0) internal successors, (4172), 7 states have internal predecessors, (4172), 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 19:06:37,228 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 596.0) internal successors, (4172), 7 states have internal predecessors, (4172), 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 19:06:37,228 INFO L175 Difference]: Start difference. First operand has 169 places, 170 transitions, 374 flow. Second operand 6 states and 2038 transitions. [2022-12-13 19:06:37,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 173 transitions, 534 flow [2022-12-13 19:06:37,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 173 transitions, 532 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:06:37,231 INFO L231 Difference]: Finished difference. Result has 176 places, 173 transitions, 408 flow [2022-12-13 19:06:37,232 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=408, PETRI_PLACES=176, PETRI_TRANSITIONS=173} [2022-12-13 19:06:37,232 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 12 predicate places. [2022-12-13 19:06:37,232 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 173 transitions, 408 flow [2022-12-13 19:06:37,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 328.7142857142857) internal successors, (2301), 7 states have internal predecessors, (2301), 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 19:06:37,234 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:06:37,234 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1] [2022-12-13 19:06:37,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-13 19:06:37,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 19:06:37,435 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-12-13 19:06:37,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:06:37,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1721264805, now seen corresponding path program 2 times [2022-12-13 19:06:37,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:06:37,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393336006] [2022-12-13 19:06:37,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:06:37,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:06:37,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:06:37,520 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 19:06:37,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:06:37,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393336006] [2022-12-13 19:06:37,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393336006] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:06:37,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113837835] [2022-12-13 19:06:37,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:06:37,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:06:37,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:06:37,522 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:06:37,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 19:06:37,577 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 19:06:37,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:06:37,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 19:06:37,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:06:37,589 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 19:06:37,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:06:37,624 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 19:06:37,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113837835] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:06:37,624 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:06:37,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-13 19:06:37,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275243754] [2022-12-13 19:06:37,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:06:37,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 19:06:37,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:06:37,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 19:06:37,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 19:06:37,647 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 596 [2022-12-13 19:06:37,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 173 transitions, 408 flow. Second operand has 13 states, 13 states have (on average 328.38461538461536) internal successors, (4269), 13 states have internal predecessors, (4269), 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 19:06:37,652 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:06:37,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 596 [2022-12-13 19:06:37,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:06:42,007 INFO L130 PetriNetUnfolder]: 18400/42155 cut-off events. [2022-12-13 19:06:42,007 INFO L131 PetriNetUnfolder]: For 974/1050 co-relation queries the response was YES. [2022-12-13 19:06:42,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69102 conditions, 42155 events. 18400/42155 cut-off events. For 974/1050 co-relation queries the response was YES. Maximal size of possible extension queue 972. Compared 447617 event pairs, 15876 based on Foata normal form. 6/37929 useless extension candidates. Maximal degree in co-relation 69042. Up to 26022 conditions per place. [2022-12-13 19:06:42,174 INFO L137 encePairwiseOnDemand]: 593/596 looper letters, 69 selfloop transitions, 11 changer transitions 0/179 dead transitions. [2022-12-13 19:06:42,174 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 179 transitions, 604 flow [2022-12-13 19:06:42,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 19:06:42,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 19:06:42,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4009 transitions. [2022-12-13 19:06:42,179 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5605425055928411 [2022-12-13 19:06:42,179 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4009 transitions. [2022-12-13 19:06:42,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4009 transitions. [2022-12-13 19:06:42,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:06:42,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4009 transitions. [2022-12-13 19:06:42,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 334.0833333333333) internal successors, (4009), 12 states have internal predecessors, (4009), 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 19:06:42,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 596.0) internal successors, (7748), 13 states have internal predecessors, (7748), 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 19:06:42,191 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 596.0) internal successors, (7748), 13 states have internal predecessors, (7748), 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 19:06:42,192 INFO L175 Difference]: Start difference. First operand has 176 places, 173 transitions, 408 flow. Second operand 12 states and 4009 transitions. [2022-12-13 19:06:42,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 179 transitions, 604 flow [2022-12-13 19:06:42,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 179 transitions, 590 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-13 19:06:42,195 INFO L231 Difference]: Finished difference. Result has 192 places, 179 transitions, 478 flow [2022-12-13 19:06:42,195 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=478, PETRI_PLACES=192, PETRI_TRANSITIONS=179} [2022-12-13 19:06:42,195 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 28 predicate places. [2022-12-13 19:06:42,195 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 179 transitions, 478 flow [2022-12-13 19:06:42,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 328.38461538461536) internal successors, (4269), 13 states have internal predecessors, (4269), 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 19:06:42,196 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:06:42,196 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2022-12-13 19:06:42,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-13 19:06:42,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:06:42,398 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-12-13 19:06:42,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:06:42,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1602346341, now seen corresponding path program 3 times [2022-12-13 19:06:42,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:06:42,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197491246] [2022-12-13 19:06:42,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:06:42,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:06:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:06:42,444 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:06:42,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:06:42,458 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:06:42,459 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 19:06:42,459 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-12-13 19:06:42,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2022-12-13 19:06:42,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2022-12-13 19:06:42,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2022-12-13 19:06:42,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2022-12-13 19:06:42,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2022-12-13 19:06:42,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2022-12-13 19:06:42,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2022-12-13 19:06:42,460 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2022-12-13 19:06:42,460 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2022-12-13 19:06:42,460 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2022-12-13 19:06:42,460 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2022-12-13 19:06:42,460 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2022-12-13 19:06:42,460 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2022-12-13 19:06:42,460 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2022-12-13 19:06:42,460 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2022-12-13 19:06:42,460 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2022-12-13 19:06:42,461 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2022-12-13 19:06:42,461 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2022-12-13 19:06:42,461 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2022-12-13 19:06:42,461 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2022-12-13 19:06:42,461 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2022-12-13 19:06:42,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 19:06:42,461 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2022-12-13 19:06:42,462 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 19:06:42,462 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 19:06:42,500 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 19:06:42,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 428 places, 484 transitions, 998 flow [2022-12-13 19:06:42,633 INFO L130 PetriNetUnfolder]: 120/960 cut-off events. [2022-12-13 19:06:42,634 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 19:06:42,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 988 conditions, 960 events. 120/960 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5655 event pairs, 1 based on Foata normal form. 0/793 useless extension candidates. Maximal degree in co-relation 663. Up to 16 conditions per place. [2022-12-13 19:06:42,643 INFO L82 GeneralOperation]: Start removeDead. Operand has 428 places, 484 transitions, 998 flow [2022-12-13 19:06:42,651 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 428 places, 484 transitions, 998 flow [2022-12-13 19:06:42,651 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 19:06:42,651 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 428 places, 484 transitions, 998 flow [2022-12-13 19:06:42,651 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 428 places, 484 transitions, 998 flow [2022-12-13 19:06:42,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 428 places, 484 transitions, 998 flow [2022-12-13 19:06:42,814 INFO L130 PetriNetUnfolder]: 120/960 cut-off events. [2022-12-13 19:06:42,814 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 19:06:42,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 988 conditions, 960 events. 120/960 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5655 event pairs, 1 based on Foata normal form. 0/793 useless extension candidates. Maximal degree in co-relation 663. Up to 16 conditions per place. [2022-12-13 19:06:42,872 INFO L119 LiptonReduction]: Number of co-enabled transitions 149760 [2022-12-13 19:06:45,570 INFO L134 LiptonReduction]: Checked pairs total: 581227 [2022-12-13 19:06:45,570 INFO L136 LiptonReduction]: Total number of compositions: 271 [2022-12-13 19:06:45,571 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:06:45,571 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;@24947fa7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:06:45,571 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-12-13 19:06:45,574 INFO L130 PetriNetUnfolder]: 13/65 cut-off events. [2022-12-13 19:06:45,574 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 19:06:45,574 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:06:45,574 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:06:45,574 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-12-13 19:06:45,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:06:45,575 INFO L85 PathProgramCache]: Analyzing trace with hash 2017145632, now seen corresponding path program 1 times [2022-12-13 19:06:45,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:06:45,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356095256] [2022-12-13 19:06:45,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:06:45,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:06:45,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:06:45,591 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 19:06:45,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:06:45,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356095256] [2022-12-13 19:06:45,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356095256] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:06:45,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:06:45,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:06:45,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676211929] [2022-12-13 19:06:45,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:06:45,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:06:45,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:06:45,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:06:45,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:06:45,599 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 419 out of 755 [2022-12-13 19:06:45,600 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 263 transitions, 556 flow. Second operand has 3 states, 3 states have (on average 420.6666666666667) internal successors, (1262), 3 states have internal predecessors, (1262), 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 19:06:45,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:06:45,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 419 of 755 [2022-12-13 19:06:45,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:08:05,157 INFO L130 PetriNetUnfolder]: 555627/1029618 cut-off events. [2022-12-13 19:08:05,157 INFO L131 PetriNetUnfolder]: For 7465/8609 co-relation queries the response was YES. [2022-12-13 19:08:07,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1742401 conditions, 1029618 events. 555627/1029618 cut-off events. For 7465/8609 co-relation queries the response was YES. Maximal size of possible extension queue 18869. Compared 13430283 event pairs, 488721 based on Foata normal form. 174678/1081662 useless extension candidates. Maximal degree in co-relation 264376. Up to 709566 conditions per place. [2022-12-13 19:08:11,478 INFO L137 encePairwiseOnDemand]: 710/755 looper letters, 90 selfloop transitions, 2 changer transitions 0/222 dead transitions. [2022-12-13 19:08:11,478 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 222 transitions, 658 flow [2022-12-13 19:08:11,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:08:11,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:08:11,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1392 transitions. [2022-12-13 19:08:11,481 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.614569536423841 [2022-12-13 19:08:11,481 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1392 transitions. [2022-12-13 19:08:11,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1392 transitions. [2022-12-13 19:08:11,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:08:11,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1392 transitions. [2022-12-13 19:08:11,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 464.0) internal successors, (1392), 3 states have internal predecessors, (1392), 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 19:08:11,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 755.0) internal successors, (3020), 4 states have internal predecessors, (3020), 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 19:08:11,486 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 755.0) internal successors, (3020), 4 states have internal predecessors, (3020), 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 19:08:11,487 INFO L175 Difference]: Start difference. First operand has 216 places, 263 transitions, 556 flow. Second operand 3 states and 1392 transitions. [2022-12-13 19:08:11,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 222 transitions, 658 flow [2022-12-13 19:08:11,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 222 transitions, 658 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 19:08:11,492 INFO L231 Difference]: Finished difference. Result has 219 places, 222 transitions, 484 flow [2022-12-13 19:08:11,492 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=755, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=484, PETRI_PLACES=219, PETRI_TRANSITIONS=222} [2022-12-13 19:08:11,493 INFO L288 CegarLoopForPetriNet]: 216 programPoint places, 3 predicate places. [2022-12-13 19:08:11,493 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 222 transitions, 484 flow [2022-12-13 19:08:11,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 420.6666666666667) internal successors, (1262), 3 states have internal predecessors, (1262), 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 19:08:11,493 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:08:11,493 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:08:11,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 19:08:11,494 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-12-13 19:08:11,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:08:11,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1770091896, now seen corresponding path program 1 times [2022-12-13 19:08:11,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:08:11,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993704219] [2022-12-13 19:08:11,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:08:11,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:08:11,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:11,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:08:11,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:08:11,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993704219] [2022-12-13 19:08:11,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993704219] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:08:11,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767971607] [2022-12-13 19:08:11,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:08:11,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:08:11,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:08:11,524 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:08:11,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0fcfc7c-a7e3-4f85-b59c-37dc745eb1b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 19:08:11,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:08:11,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 19:08:11,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:08:11,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:08:11,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:08:11,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767971607] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:08:11,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:08:11,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-12-13 19:08:11,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425295475] [2022-12-13 19:08:11,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:08:11,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:08:11,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:08:11,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:08:11,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:08:11,602 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 419 out of 755 [2022-12-13 19:08:11,603 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 222 transitions, 484 flow. Second operand has 3 states, 3 states have (on average 421.0) internal successors, (1263), 3 states have internal predecessors, (1263), 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 19:08:11,603 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:08:11,603 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 419 of 755 [2022-12-13 19:08:11,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand