./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_06-tricky_address1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_06-tricky_address1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS --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 99f794c04b6feffb38c1e5c415a278bf34dda5287d389b184a9a7d818ab0b70e --- 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-4e7fbc6 [2022-11-23 02:31:03,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:31:03,243 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:31:03,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:31:03,281 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:31:03,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:31:03,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:31:03,294 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:31:03,297 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:31:03,302 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:31:03,304 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:31:03,306 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:31:03,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:31:03,310 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:31:03,314 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:31:03,316 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:31:03,318 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:31:03,320 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:31:03,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:31:03,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:31:03,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:31:03,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:31:03,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:31:03,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:31:03,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:31:03,339 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:31:03,339 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:31:03,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:31:03,341 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:31:03,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:31:03,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:31:03,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:31:03,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:31:03,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:31:03,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:31:03,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:31:03,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:31:03,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:31:03,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:31:03,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:31:03,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:31:03,351 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-23 02:31:03,376 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:31:03,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:31:03,377 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:31:03,377 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:31:03,378 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 02:31:03,378 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 02:31:03,379 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:31:03,380 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:31:03,380 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:31:03,380 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:31:03,381 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 02:31:03,381 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 02:31:03,381 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 02:31:03,381 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 02:31:03,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:31:03,382 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 02:31:03,382 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 02:31:03,383 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 02:31:03,383 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-23 02:31:03,383 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 02:31:03,383 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 02:31:03,384 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:31:03,384 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 02:31:03,384 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:31:03,385 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:31:03,385 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 02:31:03,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:31:03,386 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:31:03,386 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 02:31:03,386 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 02:31:03,386 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 02:31:03,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 02:31:03,387 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 02:31:03,387 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 02:31:03,388 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 02:31:03,388 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 02:31:03,388 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_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 99f794c04b6feffb38c1e5c415a278bf34dda5287d389b184a9a7d818ab0b70e [2022-11-23 02:31:03,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:31:03,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:31:03,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:31:03,727 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:31:03,727 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:31:03,729 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/goblint-regression/06-symbeq_06-tricky_address1.i [2022-11-23 02:31:06,980 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:31:07,329 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:31:07,330 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/sv-benchmarks/c/goblint-regression/06-symbeq_06-tricky_address1.i [2022-11-23 02:31:07,350 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/data/56e9a8f14/259902d1076d44b5b6bc8bd5ca52cdd7/FLAG5f8a54a02 [2022-11-23 02:31:07,373 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/data/56e9a8f14/259902d1076d44b5b6bc8bd5ca52cdd7 [2022-11-23 02:31:07,379 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:31:07,382 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:31:07,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:31:07,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:31:07,392 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:31:07,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:31:07" (1/1) ... [2022-11-23 02:31:07,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6003ebfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:07, skipping insertion in model container [2022-11-23 02:31:07,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:31:07" (1/1) ... [2022-11-23 02:31:07,406 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:31:07,476 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:31:08,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:31:08,082 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 02:31:08,162 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:31:08,244 INFO L208 MainTranslator]: Completed translation [2022-11-23 02:31:08,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:08 WrapperNode [2022-11-23 02:31:08,246 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:31:08,247 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 02:31:08,247 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 02:31:08,247 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 02:31:08,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:08" (1/1) ... [2022-11-23 02:31:08,282 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:08" (1/1) ... [2022-11-23 02:31:08,309 INFO L138 Inliner]: procedures = 264, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 88 [2022-11-23 02:31:08,310 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 02:31:08,310 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 02:31:08,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 02:31:08,311 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 02:31:08,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:08" (1/1) ... [2022-11-23 02:31:08,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:08" (1/1) ... [2022-11-23 02:31:08,326 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:08" (1/1) ... [2022-11-23 02:31:08,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:08" (1/1) ... [2022-11-23 02:31:08,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:08" (1/1) ... [2022-11-23 02:31:08,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:08" (1/1) ... [2022-11-23 02:31:08,343 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:08" (1/1) ... [2022-11-23 02:31:08,345 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:08" (1/1) ... [2022-11-23 02:31:08,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 02:31:08,349 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 02:31:08,349 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 02:31:08,349 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 02:31:08,351 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:08" (1/1) ... [2022-11-23 02:31:08,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:31:08,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:31:08,390 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 02:31:08,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 02:31:08,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 02:31:08,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 02:31:08,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 02:31:08,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 02:31:08,454 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-23 02:31:08,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 02:31:08,454 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-23 02:31:08,454 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-23 02:31:08,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 02:31:08,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 02:31:08,457 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 02:31:08,690 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 02:31:08,693 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 02:31:08,938 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 02:31:08,947 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 02:31:08,947 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 02:31:08,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:31:08 BoogieIcfgContainer [2022-11-23 02:31:08,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 02:31:08,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 02:31:08,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 02:31:08,956 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 02:31:08,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:31:07" (1/3) ... [2022-11-23 02:31:08,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79734b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:31:08, skipping insertion in model container [2022-11-23 02:31:08,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:08" (2/3) ... [2022-11-23 02:31:08,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79734b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:31:08, skipping insertion in model container [2022-11-23 02:31:08,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:31:08" (3/3) ... [2022-11-23 02:31:08,960 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_06-tricky_address1.i [2022-11-23 02:31:08,973 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 02:31:08,984 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 02:31:08,984 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-23 02:31:08,985 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 02:31:09,085 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-23 02:31:09,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 103 transitions, 211 flow [2022-11-23 02:31:09,199 INFO L130 PetriNetUnfolder]: 4/102 cut-off events. [2022-11-23 02:31:09,199 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:31:09,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 102 events. 4/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 84 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2022-11-23 02:31:09,205 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 103 transitions, 211 flow [2022-11-23 02:31:09,210 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 102 transitions, 207 flow [2022-11-23 02:31:09,215 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 02:31:09,233 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 102 transitions, 207 flow [2022-11-23 02:31:09,236 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 102 transitions, 207 flow [2022-11-23 02:31:09,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 102 transitions, 207 flow [2022-11-23 02:31:09,274 INFO L130 PetriNetUnfolder]: 4/102 cut-off events. [2022-11-23 02:31:09,274 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:31:09,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 102 events. 4/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 84 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2022-11-23 02:31:09,277 INFO L119 LiptonReduction]: Number of co-enabled transitions 2220 [2022-11-23 02:31:12,551 INFO L134 LiptonReduction]: Checked pairs total: 10908 [2022-11-23 02:31:12,551 INFO L136 LiptonReduction]: Total number of compositions: 82 [2022-11-23 02:31:12,569 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:31:12,577 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;@56a544d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:31:12,577 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-23 02:31:12,582 INFO L130 PetriNetUnfolder]: 1/9 cut-off events. [2022-11-23 02:31:12,583 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:31:12,583 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:31:12,584 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 02:31:12,584 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-23 02:31:12,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:31:12,591 INFO L85 PathProgramCache]: Analyzing trace with hash 351199677, now seen corresponding path program 1 times [2022-11-23 02:31:12,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:31:12,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365374510] [2022-11-23 02:31:12,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:12,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:31:12,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:12,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:31:12,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:31:12,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365374510] [2022-11-23 02:31:12,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365374510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:31:12,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:31:12,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:31:12,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096971324] [2022-11-23 02:31:12,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:31:12,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:31:12,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:31:12,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:31:12,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:31:13,014 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 185 [2022-11-23 02:31:13,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:31:13,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:31:13,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 185 [2022-11-23 02:31:13,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:31:13,164 INFO L130 PetriNetUnfolder]: 37/165 cut-off events. [2022-11-23 02:31:13,164 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:31:13,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 165 events. 37/165 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 626 event pairs, 36 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 244. Up to 89 conditions per place. [2022-11-23 02:31:13,167 INFO L137 encePairwiseOnDemand]: 181/185 looper letters, 15 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2022-11-23 02:31:13,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 37 transitions, 111 flow [2022-11-23 02:31:13,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:31:13,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:31:13,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2022-11-23 02:31:13,196 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5477477477477477 [2022-11-23 02:31:13,197 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 304 transitions. [2022-11-23 02:31:13,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 304 transitions. [2022-11-23 02:31:13,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:31:13,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 304 transitions. [2022-11-23 02:31:13,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:31:13,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:31:13,224 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:31:13,227 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 77 flow. Second operand 3 states and 304 transitions. [2022-11-23 02:31:13,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 37 transitions, 111 flow [2022-11-23 02:31:13,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 37 transitions, 110 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:31:13,234 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 86 flow [2022-11-23 02:31:13,236 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2022-11-23 02:31:13,241 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2022-11-23 02:31:13,241 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 86 flow [2022-11-23 02:31:13,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:31:13,242 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:31:13,242 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:31:13,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 02:31:13,243 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-23 02:31:13,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:31:13,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1003474694, now seen corresponding path program 1 times [2022-11-23 02:31:13,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:31:13,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761865921] [2022-11-23 02:31:13,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:13,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:31:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:13,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:31:13,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:31:13,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761865921] [2022-11-23 02:31:13,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761865921] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:31:13,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669160064] [2022-11-23 02:31:13,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:13,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:31:13,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:31:13,474 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:31:13,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 02:31:13,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:13,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:31:13,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:31:13,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:31:13,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:31:13,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:31:13,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669160064] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:31:13,648 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:31:13,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-23 02:31:13,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987732921] [2022-11-23 02:31:13,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:31:13,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:31:13,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:31:13,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:31:13,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:31:13,683 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 185 [2022-11-23 02:31:13,685 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 86 flow. Second operand has 7 states, 7 states have (on average 95.57142857142857) internal successors, (669), 7 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:31:13,685 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:31:13,685 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 185 [2022-11-23 02:31:13,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:31:13,784 INFO L130 PetriNetUnfolder]: 37/168 cut-off events. [2022-11-23 02:31:13,784 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:31:13,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 168 events. 37/168 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 626 event pairs, 36 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 263. Up to 89 conditions per place. [2022-11-23 02:31:13,787 INFO L137 encePairwiseOnDemand]: 182/185 looper letters, 15 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2022-11-23 02:31:13,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 138 flow [2022-11-23 02:31:13,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:31:13,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 02:31:13,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 587 transitions. [2022-11-23 02:31:13,790 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5288288288288289 [2022-11-23 02:31:13,791 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 587 transitions. [2022-11-23 02:31:13,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 587 transitions. [2022-11-23 02:31:13,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:31:13,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 587 transitions. [2022-11-23 02:31:13,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 97.83333333333333) internal successors, (587), 6 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:31:13,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:31:13,798 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:31:13,798 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 86 flow. Second operand 6 states and 587 transitions. [2022-11-23 02:31:13,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 138 flow [2022-11-23 02:31:13,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 40 transitions, 134 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-23 02:31:13,800 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 118 flow [2022-11-23 02:31:13,800 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=118, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2022-11-23 02:31:13,801 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 9 predicate places. [2022-11-23 02:31:13,802 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 118 flow [2022-11-23 02:31:13,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 95.57142857142857) internal successors, (669), 7 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:31:13,803 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:31:13,803 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:31:13,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 02:31:14,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-23 02:31:14,010 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-23 02:31:14,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:31:14,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1344525785, now seen corresponding path program 2 times [2022-11-23 02:31:14,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:31:14,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25103077] [2022-11-23 02:31:14,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:14,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:31:14,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:14,470 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 02:31:14,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:31:14,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25103077] [2022-11-23 02:31:14,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25103077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:31:14,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:31:14,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 02:31:14,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639192553] [2022-11-23 02:31:14,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:31:14,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:31:14,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:31:14,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:31:14,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:31:14,771 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 185 [2022-11-23 02:31:14,772 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 118 flow. Second operand has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:31:14,773 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:31:14,773 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 185 [2022-11-23 02:31:14,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:31:15,120 INFO L130 PetriNetUnfolder]: 176/425 cut-off events. [2022-11-23 02:31:15,121 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-23 02:31:15,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 841 conditions, 425 events. 176/425 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1822 event pairs, 82 based on Foata normal form. 0/419 useless extension candidates. Maximal degree in co-relation 808. Up to 282 conditions per place. [2022-11-23 02:31:15,133 INFO L137 encePairwiseOnDemand]: 174/185 looper letters, 57 selfloop transitions, 22 changer transitions 0/86 dead transitions. [2022-11-23 02:31:15,133 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 86 transitions, 368 flow [2022-11-23 02:31:15,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:31:15,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 02:31:15,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 562 transitions. [2022-11-23 02:31:15,137 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5063063063063064 [2022-11-23 02:31:15,138 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 562 transitions. [2022-11-23 02:31:15,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 562 transitions. [2022-11-23 02:31:15,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:31:15,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 562 transitions. [2022-11-23 02:31:15,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.66666666666667) internal successors, (562), 6 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:31:15,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:31:15,147 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:31:15,147 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 118 flow. Second operand 6 states and 562 transitions. [2022-11-23 02:31:15,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 86 transitions, 368 flow [2022-11-23 02:31:15,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 86 transitions, 354 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-23 02:31:15,154 INFO L231 Difference]: Finished difference. Result has 57 places, 61 transitions, 254 flow [2022-11-23 02:31:15,154 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=254, PETRI_PLACES=57, PETRI_TRANSITIONS=61} [2022-11-23 02:31:15,156 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 18 predicate places. [2022-11-23 02:31:15,156 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 61 transitions, 254 flow [2022-11-23 02:31:15,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:31:15,157 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:31:15,158 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:31:15,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 02:31:15,158 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-23 02:31:15,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:31:15,159 INFO L85 PathProgramCache]: Analyzing trace with hash -319056528, now seen corresponding path program 1 times [2022-11-23 02:31:15,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:31:15,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734777219] [2022-11-23 02:31:15,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:15,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:31:15,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:15,563 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 02:31:15,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:31:15,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734777219] [2022-11-23 02:31:15,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734777219] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:31:15,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:31:15,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 02:31:15,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865640306] [2022-11-23 02:31:15,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:31:15,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:31:15,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:31:15,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:31:15,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:31:15,780 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 185 [2022-11-23 02:31:15,781 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 61 transitions, 254 flow. Second operand has 6 states, 6 states have (on average 84.83333333333333) internal successors, (509), 6 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:31:15,781 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:31:15,781 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 185 [2022-11-23 02:31:15,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:31:16,094 INFO L130 PetriNetUnfolder]: 204/497 cut-off events. [2022-11-23 02:31:16,096 INFO L131 PetriNetUnfolder]: For 119/122 co-relation queries the response was YES. [2022-11-23 02:31:16,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1166 conditions, 497 events. 204/497 cut-off events. For 119/122 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2315 event pairs, 76 based on Foata normal form. 0/487 useless extension candidates. Maximal degree in co-relation 1135. Up to 327 conditions per place. [2022-11-23 02:31:16,106 INFO L137 encePairwiseOnDemand]: 174/185 looper letters, 65 selfloop transitions, 26 changer transitions 0/103 dead transitions. [2022-11-23 02:31:16,106 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 103 transitions, 538 flow [2022-11-23 02:31:16,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:31:16,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 02:31:16,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 569 transitions. [2022-11-23 02:31:16,109 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5126126126126126 [2022-11-23 02:31:16,109 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 569 transitions. [2022-11-23 02:31:16,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 569 transitions. [2022-11-23 02:31:16,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:31:16,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 569 transitions. [2022-11-23 02:31:16,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.83333333333333) internal successors, (569), 6 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:31:16,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:31:16,116 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:31:16,117 INFO L175 Difference]: Start difference. First operand has 57 places, 61 transitions, 254 flow. Second operand 6 states and 569 transitions. [2022-11-23 02:31:16,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 103 transitions, 538 flow [2022-11-23 02:31:16,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 103 transitions, 538 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 02:31:16,128 INFO L231 Difference]: Finished difference. Result has 67 places, 82 transitions, 438 flow [2022-11-23 02:31:16,128 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=438, PETRI_PLACES=67, PETRI_TRANSITIONS=82} [2022-11-23 02:31:16,130 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 28 predicate places. [2022-11-23 02:31:16,131 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 82 transitions, 438 flow [2022-11-23 02:31:16,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.83333333333333) internal successors, (509), 6 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:31:16,131 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:31:16,131 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:31:16,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 02:31:16,132 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-23 02:31:16,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:31:16,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1242229187, now seen corresponding path program 1 times [2022-11-23 02:31:16,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:31:16,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762455951] [2022-11-23 02:31:16,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:16,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:31:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:16,265 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:31:16,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:31:16,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762455951] [2022-11-23 02:31:16,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762455951] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:31:16,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242010586] [2022-11-23 02:31:16,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:16,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:31:16,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:31:16,275 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:31:16,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 02:31:16,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:16,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 02:31:16,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:31:16,429 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:31:16,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:31:16,529 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:31:16,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242010586] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:31:16,530 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:31:16,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-23 02:31:16,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665854662] [2022-11-23 02:31:16,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:31:16,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 02:31:16,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:31:16,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 02:31:16,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-23 02:31:16,596 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 185 [2022-11-23 02:31:16,598 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 82 transitions, 438 flow. Second operand has 13 states, 13 states have (on average 95.46153846153847) internal successors, (1241), 13 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:31:16,598 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:31:16,599 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 185 [2022-11-23 02:31:16,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:31:16,741 INFO L130 PetriNetUnfolder]: 124/387 cut-off events. [2022-11-23 02:31:16,742 INFO L131 PetriNetUnfolder]: For 239/246 co-relation queries the response was YES. [2022-11-23 02:31:16,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1002 conditions, 387 events. 124/387 cut-off events. For 239/246 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1949 event pairs, 46 based on Foata normal form. 6/385 useless extension candidates. Maximal degree in co-relation 942. Up to 152 conditions per place. [2022-11-23 02:31:16,745 INFO L137 encePairwiseOnDemand]: 182/185 looper letters, 21 selfloop transitions, 11 changer transitions 0/88 dead transitions. [2022-11-23 02:31:16,746 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 88 transitions, 538 flow [2022-11-23 02:31:16,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 02:31:16,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-23 02:31:16,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1160 transitions. [2022-11-23 02:31:16,750 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5225225225225225 [2022-11-23 02:31:16,750 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1160 transitions. [2022-11-23 02:31:16,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1160 transitions. [2022-11-23 02:31:16,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:31:16,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1160 transitions. [2022-11-23 02:31:16,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 96.66666666666667) internal successors, (1160), 12 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:31:16,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 185.0) internal successors, (2405), 13 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:31:16,759 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 185.0) internal successors, (2405), 13 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:31:16,759 INFO L175 Difference]: Start difference. First operand has 67 places, 82 transitions, 438 flow. Second operand 12 states and 1160 transitions. [2022-11-23 02:31:16,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 88 transitions, 538 flow [2022-11-23 02:31:16,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 88 transitions, 538 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 02:31:16,764 INFO L231 Difference]: Finished difference. Result has 84 places, 88 transitions, 522 flow [2022-11-23 02:31:16,764 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=522, PETRI_PLACES=84, PETRI_TRANSITIONS=88} [2022-11-23 02:31:16,765 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 45 predicate places. [2022-11-23 02:31:16,765 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 88 transitions, 522 flow [2022-11-23 02:31:16,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 95.46153846153847) internal successors, (1241), 13 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:31:16,767 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:31:16,767 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:31:16,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 02:31:16,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:31:16,979 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-23 02:31:16,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:31:16,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1349268835, now seen corresponding path program 2 times [2022-11-23 02:31:16,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:31:16,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122327935] [2022-11-23 02:31:16,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:16,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:31:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:17,426 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-23 02:31:17,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:31:17,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122327935] [2022-11-23 02:31:17,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122327935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:31:17,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:31:17,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 02:31:17,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660380582] [2022-11-23 02:31:17,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:31:17,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:31:17,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:31:17,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:31:17,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:31:17,605 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 185 [2022-11-23 02:31:17,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 88 transitions, 522 flow. Second operand has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:31:17,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:31:17,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 185 [2022-11-23 02:31:17,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:31:18,013 INFO L130 PetriNetUnfolder]: 323/726 cut-off events. [2022-11-23 02:31:18,013 INFO L131 PetriNetUnfolder]: For 538/544 co-relation queries the response was YES. [2022-11-23 02:31:18,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2237 conditions, 726 events. 323/726 cut-off events. For 538/544 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3335 event pairs, 129 based on Foata normal form. 0/708 useless extension candidates. Maximal degree in co-relation 2152. Up to 604 conditions per place. [2022-11-23 02:31:18,021 INFO L137 encePairwiseOnDemand]: 171/185 looper letters, 95 selfloop transitions, 49 changer transitions 8/155 dead transitions. [2022-11-23 02:31:18,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 155 transitions, 1098 flow [2022-11-23 02:31:18,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:31:18,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 02:31:18,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 544 transitions. [2022-11-23 02:31:18,024 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4900900900900901 [2022-11-23 02:31:18,024 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 544 transitions. [2022-11-23 02:31:18,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 544 transitions. [2022-11-23 02:31:18,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:31:18,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 544 transitions. [2022-11-23 02:31:18,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.66666666666667) internal successors, (544), 6 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:31:18,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:31:18,029 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:31:18,030 INFO L175 Difference]: Start difference. First operand has 84 places, 88 transitions, 522 flow. Second operand 6 states and 544 transitions. [2022-11-23 02:31:18,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 155 transitions, 1098 flow [2022-11-23 02:31:18,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 155 transitions, 1050 flow, removed 19 selfloop flow, removed 5 redundant places. [2022-11-23 02:31:18,039 INFO L231 Difference]: Finished difference. Result has 88 places, 131 transitions, 869 flow [2022-11-23 02:31:18,039 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=869, PETRI_PLACES=88, PETRI_TRANSITIONS=131} [2022-11-23 02:31:18,040 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 49 predicate places. [2022-11-23 02:31:18,040 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 131 transitions, 869 flow [2022-11-23 02:31:18,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:31:18,041 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:31:18,041 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:31:18,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 02:31:18,041 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-23 02:31:18,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:31:18,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1680051093, now seen corresponding path program 1 times [2022-11-23 02:31:18,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:31:18,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796554377] [2022-11-23 02:31:18,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:18,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:31:18,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:18,424 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-23 02:31:18,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:31:18,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796554377] [2022-11-23 02:31:18,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796554377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:31:18,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:31:18,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 02:31:18,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593075284] [2022-11-23 02:31:18,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:31:18,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:31:18,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:31:18,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:31:18,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:31:18,559 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 185 [2022-11-23 02:31:18,560 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 131 transitions, 869 flow. Second operand has 6 states, 6 states have (on average 79.83333333333333) internal successors, (479), 6 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:31:18,560 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:31:18,560 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 185 [2022-11-23 02:31:18,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:31:18,884 INFO L130 PetriNetUnfolder]: 377/850 cut-off events. [2022-11-23 02:31:18,884 INFO L131 PetriNetUnfolder]: For 1041/1055 co-relation queries the response was YES. [2022-11-23 02:31:18,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3003 conditions, 850 events. 377/850 cut-off events. For 1041/1055 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4193 event pairs, 102 based on Foata normal form. 0/826 useless extension candidates. Maximal degree in co-relation 2938. Up to 659 conditions per place. [2022-11-23 02:31:18,894 INFO L137 encePairwiseOnDemand]: 170/185 looper letters, 124 selfloop transitions, 61 changer transitions 12/202 dead transitions. [2022-11-23 02:31:18,894 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 202 transitions, 1614 flow [2022-11-23 02:31:18,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:31:18,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 02:31:18,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 552 transitions. [2022-11-23 02:31:18,897 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4972972972972973 [2022-11-23 02:31:18,897 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 552 transitions. [2022-11-23 02:31:18,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 552 transitions. [2022-11-23 02:31:18,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:31:18,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 552 transitions. [2022-11-23 02:31:18,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 92.0) internal successors, (552), 6 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:31:18,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:31:18,902 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:31:18,902 INFO L175 Difference]: Start difference. First operand has 88 places, 131 transitions, 869 flow. Second operand 6 states and 552 transitions. [2022-11-23 02:31:18,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 202 transitions, 1614 flow [2022-11-23 02:31:18,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 202 transitions, 1550 flow, removed 32 selfloop flow, removed 0 redundant places. [2022-11-23 02:31:18,919 INFO L231 Difference]: Finished difference. Result has 98 places, 178 transitions, 1371 flow [2022-11-23 02:31:18,919 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=805, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1371, PETRI_PLACES=98, PETRI_TRANSITIONS=178} [2022-11-23 02:31:18,920 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 59 predicate places. [2022-11-23 02:31:18,920 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 178 transitions, 1371 flow [2022-11-23 02:31:18,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 79.83333333333333) internal successors, (479), 6 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:31:18,921 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:31:18,921 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:31:18,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 02:31:18,921 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-23 02:31:18,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:31:18,922 INFO L85 PathProgramCache]: Analyzing trace with hash 79275462, now seen corresponding path program 1 times [2022-11-23 02:31:18,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:31:18,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756125609] [2022-11-23 02:31:18,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:18,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:31:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:20,802 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-23 02:31:20,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:31:20,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756125609] [2022-11-23 02:31:20,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756125609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:31:20,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:31:20,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 02:31:20,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086254129] [2022-11-23 02:31:20,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:31:20,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 02:31:20,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:31:20,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 02:31:20,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:31:21,409 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 185 [2022-11-23 02:31:21,410 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 178 transitions, 1371 flow. Second operand has 9 states, 9 states have (on average 77.66666666666667) internal successors, (699), 9 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:31:21,410 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:31:21,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 185 [2022-11-23 02:31:21,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:31:22,453 INFO L130 PetriNetUnfolder]: 643/1511 cut-off events. [2022-11-23 02:31:22,454 INFO L131 PetriNetUnfolder]: For 3319/3370 co-relation queries the response was YES. [2022-11-23 02:31:22,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6279 conditions, 1511 events. 643/1511 cut-off events. For 3319/3370 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 9594 event pairs, 41 based on Foata normal form. 13/1519 useless extension candidates. Maximal degree in co-relation 6209. Up to 485 conditions per place. [2022-11-23 02:31:22,472 INFO L137 encePairwiseOnDemand]: 170/185 looper letters, 278 selfloop transitions, 64 changer transitions 51/424 dead transitions. [2022-11-23 02:31:22,473 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 424 transitions, 3945 flow [2022-11-23 02:31:22,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 02:31:22,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-23 02:31:22,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1272 transitions. [2022-11-23 02:31:22,478 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45837837837837836 [2022-11-23 02:31:22,478 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1272 transitions. [2022-11-23 02:31:22,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1272 transitions. [2022-11-23 02:31:22,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:31:22,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1272 transitions. [2022-11-23 02:31:22,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 84.8) internal successors, (1272), 15 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:31:22,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 185.0) internal successors, (2960), 16 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:31:22,490 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 185.0) internal successors, (2960), 16 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:31:22,490 INFO L175 Difference]: Start difference. First operand has 98 places, 178 transitions, 1371 flow. Second operand 15 states and 1272 transitions. [2022-11-23 02:31:22,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 424 transitions, 3945 flow [2022-11-23 02:31:22,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 424 transitions, 3803 flow, removed 71 selfloop flow, removed 0 redundant places. [2022-11-23 02:31:22,533 INFO L231 Difference]: Finished difference. Result has 125 places, 231 transitions, 2081 flow [2022-11-23 02:31:22,534 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=1297, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2081, PETRI_PLACES=125, PETRI_TRANSITIONS=231} [2022-11-23 02:31:22,537 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 86 predicate places. [2022-11-23 02:31:22,538 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 231 transitions, 2081 flow [2022-11-23 02:31:22,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 77.66666666666667) internal successors, (699), 9 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:31:22,538 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:31:22,539 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:31:22,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 02:31:22,539 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-23 02:31:22,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:31:22,540 INFO L85 PathProgramCache]: Analyzing trace with hash 2116782910, now seen corresponding path program 2 times [2022-11-23 02:31:22,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:31:22,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897431224] [2022-11-23 02:31:22,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:22,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:31:22,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:42,930 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:31:42,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:31:42,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897431224] [2022-11-23 02:31:42,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897431224] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:31:42,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984550184] [2022-11-23 02:31:42,931 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 02:31:42,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:31:42,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:31:42,932 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:31:42,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 02:31:43,066 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-23 02:31:43,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:31:43,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-23 02:31:43,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:31:43,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 02:31:43,268 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 02:31:43,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-23 02:31:43,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-23 02:31:43,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2022-11-23 02:31:43,692 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-23 02:31:43,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 15 [2022-11-23 02:31:43,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:31:43,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:31:43,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:31:43,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 58 [2022-11-23 02:31:43,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:31:43,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:31:43,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:31:43,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:31:43,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 59 [2022-11-23 02:31:43,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:31:43,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:31:43,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:31:43,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:31:43,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 59 [2022-11-23 02:31:44,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:31:44,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:31:44,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:31:44,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:31:44,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 59 [2022-11-23 02:31:44,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:31:44,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:31:44,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:31:44,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:31:44,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:31:44,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:31:44,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:31:44,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:31:44,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:31:44,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:31:44,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:31:44,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:31:44,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:31:44,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:31:44,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:31:44,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:31:44,415 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 02:31:44,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 29 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 106 treesize of output 123 [2022-11-23 02:32:02,656 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-23 02:32:02,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:32:02,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984550184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:32:02,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:32:02,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [20] total 29 [2022-11-23 02:32:02,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986937614] [2022-11-23 02:32:02,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:32:02,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 02:32:02,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:32:02,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 02:32:02,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=745, Unknown=8, NotChecked=0, Total=870 [2022-11-23 02:32:04,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:32:06,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:32:08,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:32:10,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:32:12,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:32:14,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:32:16,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:32:18,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:32:20,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:32:22,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:32:24,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:32:27,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:32:29,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:32:31,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:32:33,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:32:35,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:32:37,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:32:39,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:32:41,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:32:43,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:32:45,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:32:47,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:32:47,320 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 185 [2022-11-23 02:32:47,321 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 231 transitions, 2081 flow. Second operand has 11 states, 11 states have (on average 61.81818181818182) internal successors, (680), 11 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:32:47,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:32:47,321 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 185 [2022-11-23 02:32:47,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:32:51,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:32:53,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:32:55,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:32:57,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:33:02,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:33:04,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:33:06,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:33:10,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:33:12,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:33:14,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:33:21,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:33:21,552 INFO L130 PetriNetUnfolder]: 992/2160 cut-off events. [2022-11-23 02:33:21,552 INFO L131 PetriNetUnfolder]: For 7579/7579 co-relation queries the response was YES. [2022-11-23 02:33:21,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10257 conditions, 2160 events. 992/2160 cut-off events. For 7579/7579 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 13878 event pairs, 107 based on Foata normal form. 11/2093 useless extension candidates. Maximal degree in co-relation 10174. Up to 1154 conditions per place. [2022-11-23 02:33:21,583 INFO L137 encePairwiseOnDemand]: 168/185 looper letters, 266 selfloop transitions, 126 changer transitions 35/427 dead transitions. [2022-11-23 02:33:21,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 427 transitions, 4621 flow [2022-11-23 02:33:21,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 02:33:21,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-23 02:33:21,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 837 transitions. [2022-11-23 02:33:21,587 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4113022113022113 [2022-11-23 02:33:21,588 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 837 transitions. [2022-11-23 02:33:21,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 837 transitions. [2022-11-23 02:33:21,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:33:21,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 837 transitions. [2022-11-23 02:33:21,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 76.0909090909091) internal successors, (837), 11 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:21,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 185.0) internal successors, (2220), 12 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:21,595 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 185.0) internal successors, (2220), 12 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:21,595 INFO L175 Difference]: Start difference. First operand has 125 places, 231 transitions, 2081 flow. Second operand 11 states and 837 transitions. [2022-11-23 02:33:21,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 427 transitions, 4621 flow [2022-11-23 02:33:21,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 427 transitions, 4555 flow, removed 33 selfloop flow, removed 4 redundant places. [2022-11-23 02:33:21,707 INFO L231 Difference]: Finished difference. Result has 135 places, 288 transitions, 3319 flow [2022-11-23 02:33:21,708 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=2061, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3319, PETRI_PLACES=135, PETRI_TRANSITIONS=288} [2022-11-23 02:33:21,708 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 96 predicate places. [2022-11-23 02:33:21,708 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 288 transitions, 3319 flow [2022-11-23 02:33:21,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 61.81818181818182) internal successors, (680), 11 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:21,709 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:33:21,709 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:33:21,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 02:33:21,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:33:21,915 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-23 02:33:21,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:33:21,916 INFO L85 PathProgramCache]: Analyzing trace with hash -13393197, now seen corresponding path program 1 times [2022-11-23 02:33:21,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:33:21,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404051650] [2022-11-23 02:33:21,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:33:21,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:33:21,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:23,694 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-23 02:33:23,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:33:23,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404051650] [2022-11-23 02:33:23,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404051650] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:33:23,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:33:23,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-23 02:33:23,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593155761] [2022-11-23 02:33:23,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:33:23,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 02:33:23,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:33:23,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 02:33:23,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-11-23 02:33:24,524 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 185 [2022-11-23 02:33:24,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 288 transitions, 3319 flow. Second operand has 11 states, 11 states have (on average 74.54545454545455) internal successors, (820), 11 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:24,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:33:24,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 185 [2022-11-23 02:33:24,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:33:26,030 INFO L130 PetriNetUnfolder]: 833/1964 cut-off events. [2022-11-23 02:33:26,030 INFO L131 PetriNetUnfolder]: For 10398/10487 co-relation queries the response was YES. [2022-11-23 02:33:26,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10311 conditions, 1964 events. 833/1964 cut-off events. For 10398/10487 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 13471 event pairs, 106 based on Foata normal form. 28/1991 useless extension candidates. Maximal degree in co-relation 10223. Up to 1197 conditions per place. [2022-11-23 02:33:26,057 INFO L137 encePairwiseOnDemand]: 169/185 looper letters, 247 selfloop transitions, 88 changer transitions 44/419 dead transitions. [2022-11-23 02:33:26,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 419 transitions, 5169 flow [2022-11-23 02:33:26,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 02:33:26,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-23 02:33:26,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1088 transitions. [2022-11-23 02:33:26,062 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4523908523908524 [2022-11-23 02:33:26,062 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1088 transitions. [2022-11-23 02:33:26,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1088 transitions. [2022-11-23 02:33:26,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:33:26,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1088 transitions. [2022-11-23 02:33:26,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 83.6923076923077) internal successors, (1088), 13 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:26,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 185.0) internal successors, (2590), 14 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:26,071 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 185.0) internal successors, (2590), 14 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:26,072 INFO L175 Difference]: Start difference. First operand has 135 places, 288 transitions, 3319 flow. Second operand 13 states and 1088 transitions. [2022-11-23 02:33:26,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 419 transitions, 5169 flow [2022-11-23 02:33:26,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 419 transitions, 5119 flow, removed 7 selfloop flow, removed 2 redundant places. [2022-11-23 02:33:26,149 INFO L231 Difference]: Finished difference. Result has 156 places, 316 transitions, 4009 flow [2022-11-23 02:33:26,149 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=3292, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4009, PETRI_PLACES=156, PETRI_TRANSITIONS=316} [2022-11-23 02:33:26,150 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 117 predicate places. [2022-11-23 02:33:26,150 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 316 transitions, 4009 flow [2022-11-23 02:33:26,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 74.54545454545455) internal successors, (820), 11 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:26,151 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:33:26,151 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:33:26,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 02:33:26,152 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-23 02:33:26,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:33:26,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1052110214, now seen corresponding path program 3 times [2022-11-23 02:33:26,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:33:26,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164373078] [2022-11-23 02:33:26,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:33:26,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:33:26,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:27,535 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-23 02:33:27,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:33:27,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164373078] [2022-11-23 02:33:27,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164373078] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:33:27,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:33:27,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 02:33:27,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41560127] [2022-11-23 02:33:27,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:33:27,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 02:33:27,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:33:27,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 02:33:27,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:33:28,296 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 185 [2022-11-23 02:33:28,297 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 316 transitions, 4009 flow. Second operand has 10 states, 10 states have (on average 75.7) internal successors, (757), 10 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:28,297 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:33:28,297 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 185 [2022-11-23 02:33:28,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:33:29,719 INFO L130 PetriNetUnfolder]: 879/2070 cut-off events. [2022-11-23 02:33:29,720 INFO L131 PetriNetUnfolder]: For 15106/15177 co-relation queries the response was YES. [2022-11-23 02:33:29,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11913 conditions, 2070 events. 879/2070 cut-off events. For 15106/15177 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 14314 event pairs, 99 based on Foata normal form. 12/2078 useless extension candidates. Maximal degree in co-relation 11816. Up to 689 conditions per place. [2022-11-23 02:33:29,759 INFO L137 encePairwiseOnDemand]: 168/185 looper letters, 405 selfloop transitions, 118 changer transitions 16/559 dead transitions. [2022-11-23 02:33:29,759 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 559 transitions, 7396 flow [2022-11-23 02:33:29,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 02:33:29,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-23 02:33:29,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 878 transitions. [2022-11-23 02:33:29,765 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4745945945945946 [2022-11-23 02:33:29,765 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 878 transitions. [2022-11-23 02:33:29,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 878 transitions. [2022-11-23 02:33:29,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:33:29,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 878 transitions. [2022-11-23 02:33:29,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 87.8) internal successors, (878), 10 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:29,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 185.0) internal successors, (2035), 11 states have internal predecessors, (2035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:29,773 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 185.0) internal successors, (2035), 11 states have internal predecessors, (2035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:29,773 INFO L175 Difference]: Start difference. First operand has 156 places, 316 transitions, 4009 flow. Second operand 10 states and 878 transitions. [2022-11-23 02:33:29,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 559 transitions, 7396 flow [2022-11-23 02:33:29,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 559 transitions, 7296 flow, removed 13 selfloop flow, removed 4 redundant places. [2022-11-23 02:33:29,890 INFO L231 Difference]: Finished difference. Result has 168 places, 352 transitions, 4875 flow [2022-11-23 02:33:29,891 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=3953, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4875, PETRI_PLACES=168, PETRI_TRANSITIONS=352} [2022-11-23 02:33:29,892 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 129 predicate places. [2022-11-23 02:33:29,892 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 352 transitions, 4875 flow [2022-11-23 02:33:29,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 75.7) internal successors, (757), 10 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:29,893 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:33:29,893 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:33:29,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 02:33:29,893 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-23 02:33:29,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:33:29,894 INFO L85 PathProgramCache]: Analyzing trace with hash 130773951, now seen corresponding path program 2 times [2022-11-23 02:33:29,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:33:29,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718735729] [2022-11-23 02:33:29,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:33:29,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:33:29,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:31,036 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-23 02:33:31,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:33:31,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718735729] [2022-11-23 02:33:31,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718735729] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:33:31,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:33:31,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 02:33:31,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815401026] [2022-11-23 02:33:31,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:33:31,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 02:33:31,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:33:31,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 02:33:31,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:33:31,701 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 185 [2022-11-23 02:33:31,702 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 352 transitions, 4875 flow. Second operand has 10 states, 10 states have (on average 75.7) internal successors, (757), 10 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:31,702 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:33:31,702 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 185 [2022-11-23 02:33:31,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:33:32,761 INFO L130 PetriNetUnfolder]: 870/2069 cut-off events. [2022-11-23 02:33:32,761 INFO L131 PetriNetUnfolder]: For 18552/18658 co-relation queries the response was YES. [2022-11-23 02:33:32,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12581 conditions, 2069 events. 870/2069 cut-off events. For 18552/18658 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 14353 event pairs, 112 based on Foata normal form. 34/2099 useless extension candidates. Maximal degree in co-relation 12476. Up to 679 conditions per place. [2022-11-23 02:33:32,795 INFO L137 encePairwiseOnDemand]: 168/185 looper letters, 427 selfloop transitions, 103 changer transitions 17/600 dead transitions. [2022-11-23 02:33:32,795 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 600 transitions, 8326 flow [2022-11-23 02:33:32,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 02:33:32,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-23 02:33:32,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 955 transitions. [2022-11-23 02:33:32,801 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4692874692874693 [2022-11-23 02:33:32,801 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 955 transitions. [2022-11-23 02:33:32,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 955 transitions. [2022-11-23 02:33:32,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:33:32,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 955 transitions. [2022-11-23 02:33:32,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 86.81818181818181) internal successors, (955), 11 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:32,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 185.0) internal successors, (2220), 12 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:32,810 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 185.0) internal successors, (2220), 12 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:32,810 INFO L175 Difference]: Start difference. First operand has 168 places, 352 transitions, 4875 flow. Second operand 11 states and 955 transitions. [2022-11-23 02:33:32,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 600 transitions, 8326 flow [2022-11-23 02:33:32,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 600 transitions, 8207 flow, removed 55 selfloop flow, removed 1 redundant places. [2022-11-23 02:33:32,941 INFO L231 Difference]: Finished difference. Result has 184 places, 413 transitions, 5959 flow [2022-11-23 02:33:32,941 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=4770, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5959, PETRI_PLACES=184, PETRI_TRANSITIONS=413} [2022-11-23 02:33:32,942 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 145 predicate places. [2022-11-23 02:33:32,942 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 413 transitions, 5959 flow [2022-11-23 02:33:32,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 75.7) internal successors, (757), 10 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:32,943 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:33:32,945 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:33:32,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 02:33:32,945 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-23 02:33:32,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:33:32,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1835578481, now seen corresponding path program 3 times [2022-11-23 02:33:32,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:33:32,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477877633] [2022-11-23 02:33:32,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:33:32,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:33:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:39,600 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:33:39,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:33:39,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477877633] [2022-11-23 02:33:39,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477877633] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:33:39,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494929028] [2022-11-23 02:33:39,601 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 02:33:39,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:33:39,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:33:39,602 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:33:39,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 02:33:39,758 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-23 02:33:39,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:33:39,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-23 02:33:39,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:33:39,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 02:33:39,906 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-23 02:33:39,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 15 [2022-11-23 02:33:40,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-23 02:33:40,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-23 02:33:40,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2022-11-23 02:33:40,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 57 [2022-11-23 02:33:40,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:33:40,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:33:40,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:33:40,410 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 02:33:40,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 67 [2022-11-23 02:33:46,838 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-23 02:33:46,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:33:46,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494929028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:33:46,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:33:46,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [19] total 27 [2022-11-23 02:33:46,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126804063] [2022-11-23 02:33:46,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:33:46,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 02:33:46,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:33:46,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 02:33:46,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=631, Unknown=2, NotChecked=0, Total=756 [2022-11-23 02:33:49,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:33:49,623 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 185 [2022-11-23 02:33:49,624 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 413 transitions, 5959 flow. Second operand has 9 states, 9 states have (on average 76.77777777777777) internal successors, (691), 9 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:49,624 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:33:49,625 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 185 [2022-11-23 02:33:49,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:33:52,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:33:52,935 INFO L130 PetriNetUnfolder]: 824/1994 cut-off events. [2022-11-23 02:33:52,935 INFO L131 PetriNetUnfolder]: For 20252/20335 co-relation queries the response was YES. [2022-11-23 02:33:52,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12642 conditions, 1994 events. 824/1994 cut-off events. For 20252/20335 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 13972 event pairs, 115 based on Foata normal form. 28/2011 useless extension candidates. Maximal degree in co-relation 12530. Up to 711 conditions per place. [2022-11-23 02:33:52,959 INFO L137 encePairwiseOnDemand]: 175/185 looper letters, 414 selfloop transitions, 56 changer transitions 34/579 dead transitions. [2022-11-23 02:33:52,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 579 transitions, 8375 flow [2022-11-23 02:33:52,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 02:33:52,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-23 02:33:52,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1093 transitions. [2022-11-23 02:33:52,962 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4544698544698545 [2022-11-23 02:33:52,963 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1093 transitions. [2022-11-23 02:33:52,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1093 transitions. [2022-11-23 02:33:52,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:33:52,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1093 transitions. [2022-11-23 02:33:52,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 84.07692307692308) internal successors, (1093), 13 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:52,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 185.0) internal successors, (2590), 14 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:52,971 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 185.0) internal successors, (2590), 14 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:52,971 INFO L175 Difference]: Start difference. First operand has 184 places, 413 transitions, 5959 flow. Second operand 13 states and 1093 transitions. [2022-11-23 02:33:52,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 579 transitions, 8375 flow [2022-11-23 02:33:53,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 579 transitions, 8349 flow, removed 13 selfloop flow, removed 0 redundant places. [2022-11-23 02:33:53,099 INFO L231 Difference]: Finished difference. Result has 198 places, 413 transitions, 6077 flow [2022-11-23 02:33:53,100 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=5935, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6077, PETRI_PLACES=198, PETRI_TRANSITIONS=413} [2022-11-23 02:33:53,100 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 159 predicate places. [2022-11-23 02:33:53,100 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 413 transitions, 6077 flow [2022-11-23 02:33:53,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 76.77777777777777) internal successors, (691), 9 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:53,101 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:33:53,101 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:33:53,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 02:33:53,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-23 02:33:53,301 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-23 02:33:53,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:33:53,302 INFO L85 PathProgramCache]: Analyzing trace with hash -22493556, now seen corresponding path program 4 times [2022-11-23 02:33:53,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:33:53,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610654956] [2022-11-23 02:33:53,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:33:53,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:33:53,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:54,675 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-23 02:33:54,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:33:54,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610654956] [2022-11-23 02:33:54,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610654956] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:33:54,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:33:54,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 02:33:54,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48629867] [2022-11-23 02:33:54,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:33:54,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 02:33:54,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:33:54,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 02:33:54,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:33:55,294 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 185 [2022-11-23 02:33:55,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 413 transitions, 6077 flow. Second operand has 9 states, 9 states have (on average 77.66666666666667) internal successors, (699), 9 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:55,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:33:55,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 185 [2022-11-23 02:33:55,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:33:56,412 INFO L130 PetriNetUnfolder]: 933/2199 cut-off events. [2022-11-23 02:33:56,412 INFO L131 PetriNetUnfolder]: For 24346/24466 co-relation queries the response was YES. [2022-11-23 02:33:56,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14280 conditions, 2199 events. 933/2199 cut-off events. For 24346/24466 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 15546 event pairs, 104 based on Foata normal form. 34/2219 useless extension candidates. Maximal degree in co-relation 14165. Up to 737 conditions per place. [2022-11-23 02:33:56,435 INFO L137 encePairwiseOnDemand]: 170/185 looper letters, 303 selfloop transitions, 172 changer transitions 24/563 dead transitions. [2022-11-23 02:33:56,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 563 transitions, 8975 flow [2022-11-23 02:33:56,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 02:33:56,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-23 02:33:56,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 792 transitions. [2022-11-23 02:33:56,437 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4756756756756757 [2022-11-23 02:33:56,437 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 792 transitions. [2022-11-23 02:33:56,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 792 transitions. [2022-11-23 02:33:56,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:33:56,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 792 transitions. [2022-11-23 02:33:56,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 88.0) internal successors, (792), 9 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:56,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 185.0) internal successors, (1850), 10 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:56,443 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 185.0) internal successors, (1850), 10 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:56,443 INFO L175 Difference]: Start difference. First operand has 198 places, 413 transitions, 6077 flow. Second operand 9 states and 792 transitions. [2022-11-23 02:33:56,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 563 transitions, 8975 flow [2022-11-23 02:33:56,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 563 transitions, 8847 flow, removed 1 selfloop flow, removed 8 redundant places. [2022-11-23 02:33:56,597 INFO L231 Difference]: Finished difference. Result has 200 places, 463 transitions, 7492 flow [2022-11-23 02:33:56,598 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=5967, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7492, PETRI_PLACES=200, PETRI_TRANSITIONS=463} [2022-11-23 02:33:56,598 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 161 predicate places. [2022-11-23 02:33:56,598 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 463 transitions, 7492 flow [2022-11-23 02:33:56,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 77.66666666666667) internal successors, (699), 9 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:56,599 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:33:56,599 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:33:56,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 02:33:56,599 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-23 02:33:56,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:33:56,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1901363542, now seen corresponding path program 1 times [2022-11-23 02:33:56,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:33:56,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121750136] [2022-11-23 02:33:56,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:33:56,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:33:56,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:34:36,656 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:34:36,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:34:36,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121750136] [2022-11-23 02:34:36,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121750136] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:34:36,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222100269] [2022-11-23 02:34:36,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:34:36,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:34:36,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:34:36,659 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:34:36,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 02:34:36,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:34:36,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-23 02:34:36,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:34:37,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 02:34:37,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 02:34:37,249 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-23 02:34:37,249 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 15 [2022-11-23 02:34:37,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-23 02:34:37,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-23 02:34:37,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2022-11-23 02:34:37,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:37,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:37,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:37,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:37,721 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 02:34:37,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 55 treesize of output 63 [2022-11-23 02:34:37,734 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-23 02:34:37,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:34:39,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-11-23 02:34:39,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 12 [2022-11-23 02:34:39,760 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-23 02:34:39,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222100269] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-23 02:34:39,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-23 02:34:39,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [19, 13] total 37 [2022-11-23 02:34:39,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660327056] [2022-11-23 02:34:39,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:34:39,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 02:34:39,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:34:39,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 02:34:39,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1218, Unknown=0, NotChecked=0, Total=1406 [2022-11-23 02:34:41,986 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 185 [2022-11-23 02:34:41,987 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 463 transitions, 7492 flow. Second operand has 9 states, 9 states have (on average 72.22222222222223) internal successors, (650), 9 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:34:41,987 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:34:41,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 185 [2022-11-23 02:34:41,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:34:45,299 INFO L130 PetriNetUnfolder]: 1077/2479 cut-off events. [2022-11-23 02:34:45,299 INFO L131 PetriNetUnfolder]: For 31460/31521 co-relation queries the response was YES. [2022-11-23 02:34:45,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17027 conditions, 2479 events. 1077/2479 cut-off events. For 31460/31521 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 17221 event pairs, 204 based on Foata normal form. 9/2485 useless extension candidates. Maximal degree in co-relation 16907. Up to 1583 conditions per place. [2022-11-23 02:34:45,324 INFO L137 encePairwiseOnDemand]: 165/185 looper letters, 352 selfloop transitions, 178 changer transitions 43/589 dead transitions. [2022-11-23 02:34:45,325 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 589 transitions, 10002 flow [2022-11-23 02:34:45,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 02:34:45,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-23 02:34:45,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 817 transitions. [2022-11-23 02:34:45,327 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4416216216216216 [2022-11-23 02:34:45,327 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 817 transitions. [2022-11-23 02:34:45,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 817 transitions. [2022-11-23 02:34:45,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:34:45,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 817 transitions. [2022-11-23 02:34:45,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 81.7) internal successors, (817), 10 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:34:45,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 185.0) internal successors, (2035), 11 states have internal predecessors, (2035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:34:45,333 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 185.0) internal successors, (2035), 11 states have internal predecessors, (2035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:34:45,333 INFO L175 Difference]: Start difference. First operand has 200 places, 463 transitions, 7492 flow. Second operand 10 states and 817 transitions. [2022-11-23 02:34:45,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 589 transitions, 10002 flow [2022-11-23 02:34:45,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 589 transitions, 9882 flow, removed 48 selfloop flow, removed 1 redundant places. [2022-11-23 02:34:45,544 INFO L231 Difference]: Finished difference. Result has 215 places, 497 transitions, 8546 flow [2022-11-23 02:34:45,545 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=7392, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8546, PETRI_PLACES=215, PETRI_TRANSITIONS=497} [2022-11-23 02:34:45,545 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 176 predicate places. [2022-11-23 02:34:45,545 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 497 transitions, 8546 flow [2022-11-23 02:34:45,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 72.22222222222223) internal successors, (650), 9 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:34:45,546 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:34:45,546 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:34:45,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 02:34:45,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-23 02:34:45,752 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-23 02:34:45,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:34:45,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1277112382, now seen corresponding path program 5 times [2022-11-23 02:34:45,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:34:45,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191972783] [2022-11-23 02:34:45,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:34:45,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:34:45,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:34:47,030 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-23 02:34:47,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:34:47,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191972783] [2022-11-23 02:34:47,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191972783] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:34:47,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:34:47,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 02:34:47,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252914584] [2022-11-23 02:34:47,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:34:47,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 02:34:47,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:34:47,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 02:34:47,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:34:47,623 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 185 [2022-11-23 02:34:47,625 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 497 transitions, 8546 flow. Second operand has 9 states, 9 states have (on average 76.66666666666667) internal successors, (690), 9 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:34:47,625 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:34:47,625 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 185 [2022-11-23 02:34:47,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:34:48,939 INFO L130 PetriNetUnfolder]: 922/2200 cut-off events. [2022-11-23 02:34:48,939 INFO L131 PetriNetUnfolder]: For 31908/32029 co-relation queries the response was YES. [2022-11-23 02:34:48,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15931 conditions, 2200 events. 922/2200 cut-off events. For 31908/32029 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 15592 event pairs, 126 based on Foata normal form. 51/2234 useless extension candidates. Maximal degree in co-relation 15804. Up to 636 conditions per place. [2022-11-23 02:34:48,966 INFO L137 encePairwiseOnDemand]: 170/185 looper letters, 401 selfloop transitions, 141 changer transitions 28/648 dead transitions. [2022-11-23 02:34:48,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 648 transitions, 11156 flow [2022-11-23 02:34:48,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 02:34:48,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-23 02:34:48,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 783 transitions. [2022-11-23 02:34:48,969 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4702702702702703 [2022-11-23 02:34:48,969 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 783 transitions. [2022-11-23 02:34:48,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 783 transitions. [2022-11-23 02:34:48,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:34:48,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 783 transitions. [2022-11-23 02:34:48,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 87.0) internal successors, (783), 9 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:34:48,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 185.0) internal successors, (1850), 10 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:34:48,975 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 185.0) internal successors, (1850), 10 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:34:48,976 INFO L175 Difference]: Start difference. First operand has 215 places, 497 transitions, 8546 flow. Second operand 9 states and 783 transitions. [2022-11-23 02:34:48,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 648 transitions, 11156 flow [2022-11-23 02:34:49,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 648 transitions, 10903 flow, removed 60 selfloop flow, removed 2 redundant places. [2022-11-23 02:34:49,211 INFO L231 Difference]: Finished difference. Result has 221 places, 491 transitions, 8590 flow [2022-11-23 02:34:49,211 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=8308, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8590, PETRI_PLACES=221, PETRI_TRANSITIONS=491} [2022-11-23 02:34:49,212 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 182 predicate places. [2022-11-23 02:34:49,212 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 491 transitions, 8590 flow [2022-11-23 02:34:49,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 76.66666666666667) internal successors, (690), 9 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:34:49,212 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:34:49,213 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:34:49,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-23 02:34:49,213 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-23 02:34:49,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:34:49,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1882956809, now seen corresponding path program 4 times [2022-11-23 02:34:49,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:34:49,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19577754] [2022-11-23 02:34:49,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:34:49,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:34:49,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:34:53,434 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:34:53,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:34:53,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19577754] [2022-11-23 02:34:53,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19577754] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:34:53,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910741505] [2022-11-23 02:34:53,435 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 02:34:53,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:34:53,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:34:53,436 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:34:53,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 02:34:53,603 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 02:34:53,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:34:53,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-23 02:34:53,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:34:53,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-23 02:34:53,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-23 02:34:54,018 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-23 02:34:54,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 15 [2022-11-23 02:34:54,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-23 02:34:54,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:54,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-23 02:34:54,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:54,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-23 02:34:54,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:54,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-23 02:34:54,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:54,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:54,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:54,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:54,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:54,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:54,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 63 [2022-11-23 02:34:54,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:54,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:54,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:54,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:54,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:54,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:54,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:54,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:54,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:54,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 78 [2022-11-23 02:34:54,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:54,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:54,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:54,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:54,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:54,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:54,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:54,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:54,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:54,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:54,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:54,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:54,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 93 [2022-11-23 02:34:55,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:55,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:55,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:55,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:55,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:55,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:55,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:55,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:55,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:55,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:55,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:55,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:55,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:55,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:55,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:34:55,073 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 02:34:55,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 86 treesize of output 103 [2022-11-23 02:35:01,230 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-23 02:35:01,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:35:13,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 71 [2022-11-23 02:35:13,523 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-23 02:35:13,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910741505] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-23 02:35:13,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-23 02:35:13,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [19, 18] total 47 [2022-11-23 02:35:13,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728227732] [2022-11-23 02:35:13,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:35:13,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 02:35:13,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:35:13,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 02:35:13,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=2006, Unknown=2, NotChecked=0, Total=2256 [2022-11-23 02:35:25,181 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 185 [2022-11-23 02:35:25,182 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 491 transitions, 8590 flow. Second operand has 13 states, 13 states have (on average 72.46153846153847) internal successors, (942), 13 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:35:25,182 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:35:25,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 185 [2022-11-23 02:35:25,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:35:43,621 INFO L130 PetriNetUnfolder]: 1158/2674 cut-off events. [2022-11-23 02:35:43,621 INFO L131 PetriNetUnfolder]: For 40203/40272 co-relation queries the response was YES. [2022-11-23 02:35:43,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19750 conditions, 2674 events. 1158/2674 cut-off events. For 40203/40272 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 19153 event pairs, 147 based on Foata normal form. 32/2703 useless extension candidates. Maximal degree in co-relation 19623. Up to 1600 conditions per place. [2022-11-23 02:35:43,657 INFO L137 encePairwiseOnDemand]: 169/185 looper letters, 471 selfloop transitions, 183 changer transitions 16/685 dead transitions. [2022-11-23 02:35:43,658 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 685 transitions, 12643 flow [2022-11-23 02:35:43,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 02:35:43,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-23 02:35:43,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 931 transitions. [2022-11-23 02:35:43,661 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4574938574938575 [2022-11-23 02:35:43,661 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 931 transitions. [2022-11-23 02:35:43,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 931 transitions. [2022-11-23 02:35:43,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:35:43,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 931 transitions. [2022-11-23 02:35:43,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 84.63636363636364) internal successors, (931), 11 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:35:43,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 185.0) internal successors, (2220), 12 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:35:43,668 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 185.0) internal successors, (2220), 12 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:35:43,668 INFO L175 Difference]: Start difference. First operand has 221 places, 491 transitions, 8590 flow. Second operand 11 states and 931 transitions. [2022-11-23 02:35:43,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 685 transitions, 12643 flow [2022-11-23 02:35:43,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 685 transitions, 12384 flow, removed 10 selfloop flow, removed 6 redundant places. [2022-11-23 02:35:44,011 INFO L231 Difference]: Finished difference. Result has 234 places, 559 transitions, 10310 flow [2022-11-23 02:35:44,012 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=8364, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10310, PETRI_PLACES=234, PETRI_TRANSITIONS=559} [2022-11-23 02:35:44,012 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 195 predicate places. [2022-11-23 02:35:44,012 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 559 transitions, 10310 flow [2022-11-23 02:35:44,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 72.46153846153847) internal successors, (942), 13 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:35:44,013 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:35:44,013 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:35:44,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 02:35:44,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-23 02:35:44,220 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-23 02:35:44,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:35:44,221 INFO L85 PathProgramCache]: Analyzing trace with hash -391253495, now seen corresponding path program 5 times [2022-11-23 02:35:44,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:35:44,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636076130] [2022-11-23 02:35:44,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:35:44,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:35:44,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:47,696 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:35:47,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:35:47,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636076130] [2022-11-23 02:35:47,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636076130] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:35:47,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514698932] [2022-11-23 02:35:47,697 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-23 02:35:47,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:35:47,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:35:47,699 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:35:47,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 02:35:47,940 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-23 02:35:47,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:35:47,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-23 02:35:47,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:35:47,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-23 02:35:48,020 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-23 02:35:48,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 15 [2022-11-23 02:35:48,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-23 02:35:48,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-23 02:35:48,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2022-11-23 02:35:48,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 57 [2022-11-23 02:35:48,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:35:48,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:35:48,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:35:48,667 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 02:35:48,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 67 [2022-11-23 02:35:54,827 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-23 02:35:54,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:35:54,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514698932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:35:54,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:35:54,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [19] total 27 [2022-11-23 02:35:54,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464649065] [2022-11-23 02:35:54,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:35:54,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 02:35:54,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:35:54,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 02:35:54,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=651, Unknown=2, NotChecked=0, Total=756 [2022-11-23 02:35:55,831 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 185 [2022-11-23 02:35:55,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 559 transitions, 10310 flow. Second operand has 9 states, 9 states have (on average 77.77777777777777) internal successors, (700), 9 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:35:55,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:35:55,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 185 [2022-11-23 02:35:55,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:35:58,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:35:59,527 INFO L130 PetriNetUnfolder]: 1033/2471 cut-off events. [2022-11-23 02:35:59,527 INFO L131 PetriNetUnfolder]: For 43603/43689 co-relation queries the response was YES. [2022-11-23 02:35:59,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19132 conditions, 2471 events. 1033/2471 cut-off events. For 43603/43689 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 18081 event pairs, 203 based on Foata normal form. 34/2481 useless extension candidates. Maximal degree in co-relation 18996. Up to 1053 conditions per place. [2022-11-23 02:35:59,562 INFO L137 encePairwiseOnDemand]: 174/185 looper letters, 534 selfloop transitions, 98 changer transitions 32/752 dead transitions. [2022-11-23 02:35:59,563 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 752 transitions, 14031 flow [2022-11-23 02:35:59,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 02:35:59,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-23 02:35:59,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 797 transitions. [2022-11-23 02:35:59,565 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4786786786786787 [2022-11-23 02:35:59,566 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 797 transitions. [2022-11-23 02:35:59,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 797 transitions. [2022-11-23 02:35:59,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:35:59,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 797 transitions. [2022-11-23 02:35:59,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 88.55555555555556) internal successors, (797), 9 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:35:59,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 185.0) internal successors, (1850), 10 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:35:59,572 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 185.0) internal successors, (1850), 10 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:35:59,572 INFO L175 Difference]: Start difference. First operand has 234 places, 559 transitions, 10310 flow. Second operand 9 states and 797 transitions. [2022-11-23 02:35:59,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 752 transitions, 14031 flow [2022-11-23 02:35:59,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 752 transitions, 13887 flow, removed 72 selfloop flow, removed 0 redundant places. [2022-11-23 02:35:59,926 INFO L231 Difference]: Finished difference. Result has 247 places, 586 transitions, 11108 flow [2022-11-23 02:35:59,926 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=10204, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11108, PETRI_PLACES=247, PETRI_TRANSITIONS=586} [2022-11-23 02:35:59,927 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 208 predicate places. [2022-11-23 02:35:59,927 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 586 transitions, 11108 flow [2022-11-23 02:35:59,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 77.77777777777777) internal successors, (700), 9 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:35:59,928 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:35:59,928 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:35:59,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 02:36:00,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-23 02:36:00,138 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-23 02:36:00,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:36:00,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1056192776, now seen corresponding path program 1 times [2022-11-23 02:36:00,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:36:00,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074513704] [2022-11-23 02:36:00,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:36:00,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:36:00,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:36:00,975 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-23 02:36:00,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:36:00,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074513704] [2022-11-23 02:36:00,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074513704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:36:00,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:36:00,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 02:36:00,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190901046] [2022-11-23 02:36:00,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:36:00,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 02:36:00,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:36:00,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 02:36:00,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:36:01,704 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 185 [2022-11-23 02:36:01,705 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 586 transitions, 11108 flow. Second operand has 9 states, 9 states have (on average 72.22222222222223) internal successors, (650), 9 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:36:01,705 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:36:01,705 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 185 [2022-11-23 02:36:01,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:36:03,651 INFO L130 PetriNetUnfolder]: 1281/2864 cut-off events. [2022-11-23 02:36:03,651 INFO L131 PetriNetUnfolder]: For 53143/53181 co-relation queries the response was YES. [2022-11-23 02:36:03,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22545 conditions, 2864 events. 1281/2864 cut-off events. For 53143/53181 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 19960 event pairs, 344 based on Foata normal form. 7/2784 useless extension candidates. Maximal degree in co-relation 22403. Up to 1379 conditions per place. [2022-11-23 02:36:03,693 INFO L137 encePairwiseOnDemand]: 169/185 looper letters, 593 selfloop transitions, 129 changer transitions 23/748 dead transitions. [2022-11-23 02:36:03,694 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 748 transitions, 14392 flow [2022-11-23 02:36:03,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 02:36:03,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-23 02:36:03,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 771 transitions. [2022-11-23 02:36:03,697 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46306306306306305 [2022-11-23 02:36:03,697 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 771 transitions. [2022-11-23 02:36:03,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 771 transitions. [2022-11-23 02:36:03,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:36:03,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 771 transitions. [2022-11-23 02:36:03,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 85.66666666666667) internal successors, (771), 9 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:36:03,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 185.0) internal successors, (1850), 10 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:36:03,704 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 185.0) internal successors, (1850), 10 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:36:03,704 INFO L175 Difference]: Start difference. First operand has 247 places, 586 transitions, 11108 flow. Second operand 9 states and 771 transitions. [2022-11-23 02:36:03,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 748 transitions, 14392 flow [2022-11-23 02:36:04,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 748 transitions, 14283 flow, removed 36 selfloop flow, removed 3 redundant places. [2022-11-23 02:36:04,141 INFO L231 Difference]: Finished difference. Result has 256 places, 628 transitions, 11851 flow [2022-11-23 02:36:04,142 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=10999, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=586, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11851, PETRI_PLACES=256, PETRI_TRANSITIONS=628} [2022-11-23 02:36:04,142 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 217 predicate places. [2022-11-23 02:36:04,143 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 628 transitions, 11851 flow [2022-11-23 02:36:04,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 72.22222222222223) internal successors, (650), 9 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:36:04,143 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:36:04,143 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:36:04,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-23 02:36:04,144 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-23 02:36:04,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:36:04,144 INFO L85 PathProgramCache]: Analyzing trace with hash 29679784, now seen corresponding path program 2 times [2022-11-23 02:36:04,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:36:04,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281540053] [2022-11-23 02:36:04,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:36:04,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:36:04,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:36:04,816 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-23 02:36:04,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:36:04,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281540053] [2022-11-23 02:36:04,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281540053] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:36:04,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:36:04,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 02:36:04,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131294937] [2022-11-23 02:36:04,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:36:04,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 02:36:04,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:36:04,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 02:36:04,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:36:05,568 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 185 [2022-11-23 02:36:05,569 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 628 transitions, 11851 flow. Second operand has 9 states, 9 states have (on average 72.22222222222223) internal successors, (650), 9 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:36:05,569 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:36:05,570 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 185 [2022-11-23 02:36:05,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:36:07,677 INFO L130 PetriNetUnfolder]: 1187/2734 cut-off events. [2022-11-23 02:36:07,677 INFO L131 PetriNetUnfolder]: For 52489/52564 co-relation queries the response was YES. [2022-11-23 02:36:07,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22120 conditions, 2734 events. 1187/2734 cut-off events. For 52489/52564 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 19427 event pairs, 287 based on Foata normal form. 20/2749 useless extension candidates. Maximal degree in co-relation 21975. Up to 1223 conditions per place. [2022-11-23 02:36:07,714 INFO L137 encePairwiseOnDemand]: 169/185 looper letters, 557 selfloop transitions, 153 changer transitions 20/753 dead transitions. [2022-11-23 02:36:07,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 753 transitions, 14630 flow [2022-11-23 02:36:07,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 02:36:07,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-23 02:36:07,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 910 transitions. [2022-11-23 02:36:07,717 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44717444717444715 [2022-11-23 02:36:07,717 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 910 transitions. [2022-11-23 02:36:07,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 910 transitions. [2022-11-23 02:36:07,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:36:07,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 910 transitions. [2022-11-23 02:36:07,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 82.72727272727273) internal successors, (910), 11 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:36:07,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 185.0) internal successors, (2220), 12 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:36:07,723 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 185.0) internal successors, (2220), 12 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:36:07,724 INFO L175 Difference]: Start difference. First operand has 256 places, 628 transitions, 11851 flow. Second operand 11 states and 910 transitions. [2022-11-23 02:36:07,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 753 transitions, 14630 flow [2022-11-23 02:36:08,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 753 transitions, 14580 flow, removed 20 selfloop flow, removed 1 redundant places. [2022-11-23 02:36:08,124 INFO L231 Difference]: Finished difference. Result has 271 places, 667 transitions, 12847 flow [2022-11-23 02:36:08,125 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=11801, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12847, PETRI_PLACES=271, PETRI_TRANSITIONS=667} [2022-11-23 02:36:08,125 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 232 predicate places. [2022-11-23 02:36:08,125 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 667 transitions, 12847 flow [2022-11-23 02:36:08,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 72.22222222222223) internal successors, (650), 9 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:36:08,126 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:36:08,126 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:36:08,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-23 02:36:08,126 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-23 02:36:08,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:36:08,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1405334577, now seen corresponding path program 6 times [2022-11-23 02:36:08,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:36:08,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552654327] [2022-11-23 02:36:08,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:36:08,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:36:08,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:36:14,583 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:36:14,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:36:14,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552654327] [2022-11-23 02:36:14,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552654327] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:36:14,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601965911] [2022-11-23 02:36:14,584 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-23 02:36:14,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:36:14,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:36:14,585 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:36:14,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 02:36:14,766 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-11-23 02:36:14,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:36:14,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-23 02:36:14,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:36:14,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-23 02:36:14,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-23 02:36:14,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-23 02:36:14,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2022-11-23 02:36:15,096 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-23 02:36:15,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 15 [2022-11-23 02:36:15,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:36:15,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:36:15,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 52 [2022-11-23 02:36:15,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:36:15,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:36:15,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:36:15,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 54 [2022-11-23 02:36:15,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:36:15,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:36:15,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:36:15,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 54 [2022-11-23 02:36:15,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:36:15,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:36:15,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:36:15,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 54 [2022-11-23 02:36:15,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 57 [2022-11-23 02:36:15,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:36:15,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:36:15,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:36:15,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:36:15,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:36:15,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:36:15,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:36:15,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:36:15,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:36:15,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:36:15,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:36:15,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:36:15,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:36:15,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:36:15,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:36:15,823 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 02:36:15,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 86 treesize of output 103 [2022-11-23 02:36:23,992 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-23 02:36:23,992 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:36:23,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601965911] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:36:23,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:36:23,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [20] total 29 [2022-11-23 02:36:23,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648932641] [2022-11-23 02:36:23,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:36:23,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 02:36:23,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:36:23,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 02:36:23,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=761, Unknown=3, NotChecked=0, Total=870 [2022-11-23 02:36:26,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:36:28,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:36:30,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:36:32,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:36:34,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:36:36,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:36:37,262 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 185 [2022-11-23 02:36:37,263 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 667 transitions, 12847 flow. Second operand has 10 states, 10 states have (on average 70.6) internal successors, (706), 10 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:36:37,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:36:37,264 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 185 [2022-11-23 02:36:37,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:36:41,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:36:43,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:36:47,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:36:48,115 INFO L130 PetriNetUnfolder]: 1244/2809 cut-off events. [2022-11-23 02:36:48,115 INFO L131 PetriNetUnfolder]: For 63649/63746 co-relation queries the response was YES. [2022-11-23 02:36:48,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23832 conditions, 2809 events. 1244/2809 cut-off events. For 63649/63746 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 20298 event pairs, 179 based on Foata normal form. 49/2755 useless extension candidates. Maximal degree in co-relation 23682. Up to 1790 conditions per place. [2022-11-23 02:36:48,167 INFO L137 encePairwiseOnDemand]: 169/185 looper letters, 481 selfloop transitions, 212 changer transitions 31/816 dead transitions. [2022-11-23 02:36:48,167 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 816 transitions, 16929 flow [2022-11-23 02:36:48,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 02:36:48,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-23 02:36:48,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 745 transitions. [2022-11-23 02:36:48,170 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44744744744744747 [2022-11-23 02:36:48,171 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 745 transitions. [2022-11-23 02:36:48,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 745 transitions. [2022-11-23 02:36:48,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:36:48,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 745 transitions. [2022-11-23 02:36:48,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 82.77777777777777) internal successors, (745), 9 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:36:48,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 185.0) internal successors, (1850), 10 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:36:48,177 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 185.0) internal successors, (1850), 10 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:36:48,178 INFO L175 Difference]: Start difference. First operand has 271 places, 667 transitions, 12847 flow. Second operand 9 states and 745 transitions. [2022-11-23 02:36:48,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 816 transitions, 16929 flow [2022-11-23 02:36:48,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 816 transitions, 16825 flow, removed 47 selfloop flow, removed 1 redundant places. [2022-11-23 02:36:48,716 INFO L231 Difference]: Finished difference. Result has 282 places, 714 transitions, 14856 flow [2022-11-23 02:36:48,717 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=12763, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=667, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14856, PETRI_PLACES=282, PETRI_TRANSITIONS=714} [2022-11-23 02:36:48,718 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 243 predicate places. [2022-11-23 02:36:48,718 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 714 transitions, 14856 flow [2022-11-23 02:36:48,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 70.6) internal successors, (706), 10 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:36:48,718 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:36:48,718 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:36:48,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-23 02:36:48,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640588c1-6984-4e68-8d0a-4565e6cfaf79/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:36:48,919 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-23 02:36:48,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:36:48,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1002845712, now seen corresponding path program 3 times [2022-11-23 02:36:48,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:36:48,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299528245] [2022-11-23 02:36:48,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:36:48,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:36:49,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat