./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e04fb08f 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_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8 --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 ebedbc62bd44b0c214a81c07c6f99e850a5d96675b77716f8547d1b39e8b2cf8 --- 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-e04fb08 [2022-11-16 12:27:36,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:27:36,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:27:36,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:27:36,253 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:27:36,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:27:36,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:27:36,266 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:27:36,270 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:27:36,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:27:36,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:27:36,278 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:27:36,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:27:36,285 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:27:36,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:27:36,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:27:36,293 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:27:36,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:27:36,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:27:36,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:27:36,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:27:36,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:27:36,318 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:27:36,321 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:27:36,332 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:27:36,333 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:27:36,333 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:27:36,336 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:27:36,337 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:27:36,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:27:36,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:27:36,341 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:27:36,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:27:36,346 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:27:36,350 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:27:36,351 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:27:36,352 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:27:36,352 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:27:36,353 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:27:36,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:27:36,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:27:36,357 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-16 12:27:36,420 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:27:36,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:27:36,424 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:27:36,425 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:27:36,426 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:27:36,426 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:27:36,428 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:27:36,428 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:27:36,428 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:27:36,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:27:36,431 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:27:36,432 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:27:36,432 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:27:36,432 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:27:36,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:27:36,433 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:27:36,433 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:27:36,434 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:27:36,434 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-16 12:27:36,434 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:27:36,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:27:36,435 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:27:36,435 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:27:36,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:27:36,436 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:27:36,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:27:36,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:27:36,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:27:36,439 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:27:36,440 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:27:36,440 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:27:36,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:27:36,441 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:27:36,441 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:27:36,442 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:27:36,442 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebedbc62bd44b0c214a81c07c6f99e850a5d96675b77716f8547d1b39e8b2cf8 [2022-11-16 12:27:36,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:27:36,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:27:36,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:27:36,967 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:27:36,968 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:27:36,970 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i [2022-11-16 12:27:37,071 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/data/7420912f9/80b31a45ed804069b58e71ea77e946b4/FLAG6fe5ad28d [2022-11-16 12:27:37,868 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:27:37,869 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i [2022-11-16 12:27:37,890 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/data/7420912f9/80b31a45ed804069b58e71ea77e946b4/FLAG6fe5ad28d [2022-11-16 12:27:38,098 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/data/7420912f9/80b31a45ed804069b58e71ea77e946b4 [2022-11-16 12:27:38,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:27:38,105 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:27:38,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:27:38,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:27:38,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:27:38,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:27:38" (1/1) ... [2022-11-16 12:27:38,114 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67c246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:38, skipping insertion in model container [2022-11-16 12:27:38,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:27:38" (1/1) ... [2022-11-16 12:27:38,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:27:38,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:27:38,893 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:27:38,915 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:27:38,998 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:27:39,098 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:27:39,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:39 WrapperNode [2022-11-16 12:27:39,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:27:39,102 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:27:39,102 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:27:39,102 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:27:39,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:39" (1/1) ... [2022-11-16 12:27:39,147 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:39" (1/1) ... [2022-11-16 12:27:39,212 INFO L138 Inliner]: procedures = 262, calls = 13, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2022-11-16 12:27:39,214 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:27:39,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:27:39,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:27:39,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:27:39,228 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:39" (1/1) ... [2022-11-16 12:27:39,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:39" (1/1) ... [2022-11-16 12:27:39,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:39" (1/1) ... [2022-11-16 12:27:39,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:39" (1/1) ... [2022-11-16 12:27:39,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:39" (1/1) ... [2022-11-16 12:27:39,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:39" (1/1) ... [2022-11-16 12:27:39,292 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:39" (1/1) ... [2022-11-16 12:27:39,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:39" (1/1) ... [2022-11-16 12:27:39,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:27:39,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:27:39,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:27:39,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:27:39,317 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:39" (1/1) ... [2022-11-16 12:27:39,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:27:39,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:27:39,362 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:27:39,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:27:39,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:27:39,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:27:39,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:27:39,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:27:39,422 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 12:27:39,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:27:39,423 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-16 12:27:39,423 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-16 12:27:39,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:27:39,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:27:39,425 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:27:39,718 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:27:39,720 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:27:40,106 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:27:40,115 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:27:40,115 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-16 12:27:40,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:27:40 BoogieIcfgContainer [2022-11-16 12:27:40,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:27:40,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:27:40,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:27:40,131 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:27:40,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:27:38" (1/3) ... [2022-11-16 12:27:40,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@950e470 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:27:40, skipping insertion in model container [2022-11-16 12:27:40,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:39" (2/3) ... [2022-11-16 12:27:40,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@950e470 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:27:40, skipping insertion in model container [2022-11-16 12:27:40,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:27:40" (3/3) ... [2022-11-16 12:27:40,136 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_02-funloop_norace.i [2022-11-16 12:27:40,152 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:27:40,165 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:27:40,165 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-16 12:27:40,166 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:27:40,309 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 12:27:40,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 106 transitions, 217 flow [2022-11-16 12:27:40,484 INFO L130 PetriNetUnfolder]: 6/105 cut-off events. [2022-11-16 12:27:40,485 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:27:40,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 105 events. 6/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 132 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 80. Up to 2 conditions per place. [2022-11-16 12:27:40,495 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 106 transitions, 217 flow [2022-11-16 12:27:40,503 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 105 transitions, 213 flow [2022-11-16 12:27:40,528 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:27:40,538 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;@1163e839, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:27:40,538 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-16 12:27:40,587 INFO L130 PetriNetUnfolder]: 4/67 cut-off events. [2022-11-16 12:27:40,590 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:27:40,590 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:40,591 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:40,592 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)] === [2022-11-16 12:27:40,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:40,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1089390899, now seen corresponding path program 1 times [2022-11-16 12:27:40,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:40,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157083143] [2022-11-16 12:27:40,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:40,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:40,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:40,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:40,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:40,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157083143] [2022-11-16 12:27:40,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157083143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:40,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:27:40,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:27:40,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434391509] [2022-11-16 12:27:40,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:40,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:27:40,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:40,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:27:40,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:27:40,978 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 106 [2022-11-16 12:27:40,985 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 105 transitions, 213 flow. Second operand has 2 states, 2 states have (on average 103.0) internal successors, (206), 2 states have internal predecessors, (206), 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) [2022-11-16 12:27:40,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:40,986 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 106 [2022-11-16 12:27:40,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:41,072 INFO L130 PetriNetUnfolder]: 3/102 cut-off events. [2022-11-16 12:27:41,072 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 12:27:41,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 102 events. 3/102 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 131 event pairs, 0 based on Foata normal form. 3/98 useless extension candidates. Maximal degree in co-relation 78. Up to 2 conditions per place. [2022-11-16 12:27:41,077 INFO L137 encePairwiseOnDemand]: 103/106 looper letters, 1 selfloop transitions, 0 changer transitions 0/102 dead transitions. [2022-11-16 12:27:41,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 102 transitions, 209 flow [2022-11-16 12:27:41,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:27:41,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 12:27:41,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 208 transitions. [2022-11-16 12:27:41,097 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9811320754716981 [2022-11-16 12:27:41,098 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 208 transitions. [2022-11-16 12:27:41,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 208 transitions. [2022-11-16 12:27:41,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:41,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 208 transitions. [2022-11-16 12:27:41,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 104.0) internal successors, (208), 2 states have internal predecessors, (208), 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) [2022-11-16 12:27:41,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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) [2022-11-16 12:27:41,127 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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) [2022-11-16 12:27:41,130 INFO L175 Difference]: Start difference. First operand has 103 places, 105 transitions, 213 flow. Second operand 2 states and 208 transitions. [2022-11-16 12:27:41,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 102 transitions, 209 flow [2022-11-16 12:27:41,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 102 transitions, 208 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:27:41,141 INFO L231 Difference]: Finished difference. Result has 103 places, 102 transitions, 206 flow [2022-11-16 12:27:41,144 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=206, PETRI_PLACES=103, PETRI_TRANSITIONS=102} [2022-11-16 12:27:41,157 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, 0 predicate places. [2022-11-16 12:27:41,157 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 102 transitions, 206 flow [2022-11-16 12:27:41,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 103.0) internal successors, (206), 2 states have internal predecessors, (206), 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) [2022-11-16 12:27:41,158 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:41,158 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:41,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:27:41,161 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)] === [2022-11-16 12:27:41,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:41,162 INFO L85 PathProgramCache]: Analyzing trace with hash -76706158, now seen corresponding path program 1 times [2022-11-16 12:27:41,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:41,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089583237] [2022-11-16 12:27:41,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:41,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:41,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:41,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:41,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:41,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089583237] [2022-11-16 12:27:41,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089583237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:41,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:27:41,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:27:41,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004209096] [2022-11-16 12:27:41,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:41,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:27:41,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:41,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:27:41,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:27:41,384 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 106 [2022-11-16 12:27:41,385 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 102 transitions, 206 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) [2022-11-16 12:27:41,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:41,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 106 [2022-11-16 12:27:41,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:41,434 INFO L130 PetriNetUnfolder]: 3/106 cut-off events. [2022-11-16 12:27:41,435 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:27:41,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 106 events. 3/106 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 129 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 120. Up to 9 conditions per place. [2022-11-16 12:27:41,437 INFO L137 encePairwiseOnDemand]: 103/106 looper letters, 10 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2022-11-16 12:27:41,438 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 106 transitions, 238 flow [2022-11-16 12:27:41,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:27:41,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:27:41,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 298 transitions. [2022-11-16 12:27:41,441 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9371069182389937 [2022-11-16 12:27:41,442 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 298 transitions. [2022-11-16 12:27:41,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 298 transitions. [2022-11-16 12:27:41,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:41,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 298 transitions. [2022-11-16 12:27:41,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 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) [2022-11-16 12:27:41,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 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) [2022-11-16 12:27:41,459 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 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) [2022-11-16 12:27:41,460 INFO L175 Difference]: Start difference. First operand has 103 places, 102 transitions, 206 flow. Second operand 3 states and 298 transitions. [2022-11-16 12:27:41,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 106 transitions, 238 flow [2022-11-16 12:27:41,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 106 transitions, 238 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:27:41,464 INFO L231 Difference]: Finished difference. Result has 106 places, 103 transitions, 218 flow [2022-11-16 12:27:41,465 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=106, PETRI_TRANSITIONS=103} [2022-11-16 12:27:41,466 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, 3 predicate places. [2022-11-16 12:27:41,466 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 103 transitions, 218 flow [2022-11-16 12:27:41,467 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) [2022-11-16 12:27:41,467 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:41,467 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:41,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:27:41,468 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)] === [2022-11-16 12:27:41,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:41,469 INFO L85 PathProgramCache]: Analyzing trace with hash -229418693, now seen corresponding path program 1 times [2022-11-16 12:27:41,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:41,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978305621] [2022-11-16 12:27:41,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:41,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:41,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:41,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:41,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:41,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978305621] [2022-11-16 12:27:41,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978305621] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:27:41,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536987399] [2022-11-16 12:27:41,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:41,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:27:41,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:27:41,775 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:27:41,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:27:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:41,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:27:41,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:27:42,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:42,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:27:42,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:42,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536987399] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:27:42,184 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:27:42,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 12:27:42,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831398895] [2022-11-16 12:27:42,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:27:42,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:27:42,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:42,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:27:42,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:27:42,191 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 106 [2022-11-16 12:27:42,195 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 103 transitions, 218 flow. Second operand has 10 states, 10 states have (on average 96.1) internal successors, (961), 10 states have internal predecessors, (961), 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) [2022-11-16 12:27:42,195 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:42,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 106 [2022-11-16 12:27:42,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:42,375 INFO L130 PetriNetUnfolder]: 3/113 cut-off events. [2022-11-16 12:27:42,375 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 12:27:42,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 113 events. 3/113 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 124 event pairs, 0 based on Foata normal form. 2/109 useless extension candidates. Maximal degree in co-relation 141. Up to 6 conditions per place. [2022-11-16 12:27:42,384 INFO L137 encePairwiseOnDemand]: 100/106 looper letters, 11 selfloop transitions, 9 changer transitions 0/113 dead transitions. [2022-11-16 12:27:42,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 113 transitions, 280 flow [2022-11-16 12:27:42,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:27:42,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:27:42,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 868 transitions. [2022-11-16 12:27:42,395 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.909853249475891 [2022-11-16 12:27:42,396 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 868 transitions. [2022-11-16 12:27:42,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 868 transitions. [2022-11-16 12:27:42,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:42,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 868 transitions. [2022-11-16 12:27:42,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 96.44444444444444) internal successors, (868), 9 states have internal predecessors, (868), 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) [2022-11-16 12:27:42,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 106.0) internal successors, (1060), 10 states have internal predecessors, (1060), 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) [2022-11-16 12:27:42,409 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 106.0) internal successors, (1060), 10 states have internal predecessors, (1060), 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) [2022-11-16 12:27:42,409 INFO L175 Difference]: Start difference. First operand has 106 places, 103 transitions, 218 flow. Second operand 9 states and 868 transitions. [2022-11-16 12:27:42,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 113 transitions, 280 flow [2022-11-16 12:27:42,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 113 transitions, 278 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:27:42,418 INFO L231 Difference]: Finished difference. Result has 116 places, 109 transitions, 266 flow [2022-11-16 12:27:42,419 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=266, PETRI_PLACES=116, PETRI_TRANSITIONS=109} [2022-11-16 12:27:42,422 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, 13 predicate places. [2022-11-16 12:27:42,423 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 109 transitions, 266 flow [2022-11-16 12:27:42,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 96.1) internal successors, (961), 10 states have internal predecessors, (961), 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) [2022-11-16 12:27:42,424 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:42,425 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:42,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:27:42,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:27:42,634 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:27:42,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:42,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1921653659, now seen corresponding path program 2 times [2022-11-16 12:27:42,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:42,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713492777] [2022-11-16 12:27:42,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:42,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:42,976 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:42,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:42,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713492777] [2022-11-16 12:27:42,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713492777] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:27:42,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159295300] [2022-11-16 12:27:42,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:27:42,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:27:42,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:27:42,984 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:27:43,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:27:43,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:27:43,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:27:43,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 12:27:43,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:27:43,199 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 [2022-11-16 12:27:43,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 20 [2022-11-16 12:27:43,317 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:27:43,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 32 [2022-11-16 12:27:43,401 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:27:43,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-16 12:27:43,469 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 12:27:43,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:27:43,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159295300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:43,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:27:43,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2022-11-16 12:27:43,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389481559] [2022-11-16 12:27:43,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:43,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:27:43,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:43,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:27:43,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:27:43,489 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 106 [2022-11-16 12:27:43,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 109 transitions, 266 flow. Second operand has 6 states, 6 states have (on average 73.66666666666667) internal successors, (442), 6 states have internal predecessors, (442), 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) [2022-11-16 12:27:43,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:43,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 106 [2022-11-16 12:27:43,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:44,269 INFO L130 PetriNetUnfolder]: 320/1268 cut-off events. [2022-11-16 12:27:44,269 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-16 12:27:44,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1937 conditions, 1268 events. 320/1268 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 8000 event pairs, 140 based on Foata normal form. 0/1150 useless extension candidates. Maximal degree in co-relation 1930. Up to 492 conditions per place. [2022-11-16 12:27:44,285 INFO L137 encePairwiseOnDemand]: 95/106 looper letters, 63 selfloop transitions, 22 changer transitions 0/163 dead transitions. [2022-11-16 12:27:44,285 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 163 transitions, 544 flow [2022-11-16 12:27:44,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:27:44,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:27:44,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 518 transitions. [2022-11-16 12:27:44,289 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8144654088050315 [2022-11-16 12:27:44,289 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 518 transitions. [2022-11-16 12:27:44,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 518 transitions. [2022-11-16 12:27:44,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:44,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 518 transitions. [2022-11-16 12:27:44,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 86.33333333333333) internal successors, (518), 6 states have internal predecessors, (518), 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) [2022-11-16 12:27:44,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 106.0) internal successors, (742), 7 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:44,295 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 106.0) internal successors, (742), 7 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:44,295 INFO L175 Difference]: Start difference. First operand has 116 places, 109 transitions, 266 flow. Second operand 6 states and 518 transitions. [2022-11-16 12:27:44,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 163 transitions, 544 flow [2022-11-16 12:27:44,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 163 transitions, 538 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-16 12:27:44,301 INFO L231 Difference]: Finished difference. Result has 125 places, 130 transitions, 410 flow [2022-11-16 12:27:44,302 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=410, PETRI_PLACES=125, PETRI_TRANSITIONS=130} [2022-11-16 12:27:44,303 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, 22 predicate places. [2022-11-16 12:27:44,303 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 130 transitions, 410 flow [2022-11-16 12:27:44,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.66666666666667) internal successors, (442), 6 states have internal predecessors, (442), 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) [2022-11-16 12:27:44,304 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:44,304 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:44,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:27:44,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:27:44,513 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:27:44,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:44,514 INFO L85 PathProgramCache]: Analyzing trace with hash 37547901, now seen corresponding path program 1 times [2022-11-16 12:27:44,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:44,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232038479] [2022-11-16 12:27:44,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:44,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:44,701 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:44,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:44,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232038479] [2022-11-16 12:27:44,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232038479] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:27:44,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883596650] [2022-11-16 12:27:44,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:44,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:27:44,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:27:44,705 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:27:44,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:27:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:44,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:27:44,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:27:44,963 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:44,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:27:45,147 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:45,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883596650] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:27:45,148 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:27:45,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-16 12:27:45,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102681178] [2022-11-16 12:27:45,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:27:45,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:27:45,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:45,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:27:45,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:27:45,154 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 106 [2022-11-16 12:27:45,157 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 130 transitions, 410 flow. Second operand has 18 states, 18 states have (on average 96.27777777777777) internal successors, (1733), 18 states have internal predecessors, (1733), 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) [2022-11-16 12:27:45,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:45,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 106 [2022-11-16 12:27:45,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:45,563 INFO L130 PetriNetUnfolder]: 40/434 cut-off events. [2022-11-16 12:27:45,563 INFO L131 PetriNetUnfolder]: For 50/55 co-relation queries the response was YES. [2022-11-16 12:27:45,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 679 conditions, 434 events. 40/434 cut-off events. For 50/55 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1723 event pairs, 4 based on Foata normal form. 4/409 useless extension candidates. Maximal degree in co-relation 667. Up to 55 conditions per place. [2022-11-16 12:27:45,568 INFO L137 encePairwiseOnDemand]: 100/106 looper letters, 19 selfloop transitions, 21 changer transitions 0/154 dead transitions. [2022-11-16 12:27:45,568 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 154 transitions, 590 flow [2022-11-16 12:27:45,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:27:45,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 12:27:45,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2018 transitions. [2022-11-16 12:27:45,575 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9065588499550764 [2022-11-16 12:27:45,575 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2018 transitions. [2022-11-16 12:27:45,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2018 transitions. [2022-11-16 12:27:45,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:45,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2018 transitions. [2022-11-16 12:27:45,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 96.0952380952381) internal successors, (2018), 21 states have internal predecessors, (2018), 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) [2022-11-16 12:27:45,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 106.0) internal successors, (2332), 22 states have internal predecessors, (2332), 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) [2022-11-16 12:27:45,592 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 106.0) internal successors, (2332), 22 states have internal predecessors, (2332), 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) [2022-11-16 12:27:45,592 INFO L175 Difference]: Start difference. First operand has 125 places, 130 transitions, 410 flow. Second operand 21 states and 2018 transitions. [2022-11-16 12:27:45,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 154 transitions, 590 flow [2022-11-16 12:27:45,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 154 transitions, 590 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:27:45,600 INFO L231 Difference]: Finished difference. Result has 150 places, 143 transitions, 540 flow [2022-11-16 12:27:45,601 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=540, PETRI_PLACES=150, PETRI_TRANSITIONS=143} [2022-11-16 12:27:45,602 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, 47 predicate places. [2022-11-16 12:27:45,602 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 143 transitions, 540 flow [2022-11-16 12:27:45,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 96.27777777777777) internal successors, (1733), 18 states have internal predecessors, (1733), 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) [2022-11-16 12:27:45,604 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:45,604 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:45,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:27:45,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:27:45,812 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:27:45,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:45,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1221200957, now seen corresponding path program 2 times [2022-11-16 12:27:45,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:45,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202078134] [2022-11-16 12:27:45,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:45,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:45,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:46,444 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:46,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:46,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202078134] [2022-11-16 12:27:46,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202078134] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:27:46,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074788248] [2022-11-16 12:27:46,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:27:46,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:27:46,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:27:46,447 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:27:46,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:27:46,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:27:46,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:27:46,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-16 12:27:46,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:27:46,841 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 [2022-11-16 12:27:46,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:27:46,887 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 [2022-11-16 12:27:46,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:27:46,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:27:46,954 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:27:46,957 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 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-16 12:27:47,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:27:47,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:27:47,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:27:47,036 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:27:47,037 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 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-16 12:27:47,099 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-16 12:27:47,099 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:27:47,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074788248] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:47,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:27:47,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [17] total 25 [2022-11-16 12:27:47,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172193020] [2022-11-16 12:27:47,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:47,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:27:47,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:47,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:27:47,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2022-11-16 12:27:47,104 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 106 [2022-11-16 12:27:47,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 143 transitions, 540 flow. Second operand has 10 states, 10 states have (on average 63.6) internal successors, (636), 10 states have internal predecessors, (636), 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) [2022-11-16 12:27:47,106 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:47,106 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 106 [2022-11-16 12:27:47,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:48,520 INFO L130 PetriNetUnfolder]: 946/2629 cut-off events. [2022-11-16 12:27:48,521 INFO L131 PetriNetUnfolder]: For 1090/1090 co-relation queries the response was YES. [2022-11-16 12:27:48,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5702 conditions, 2629 events. 946/2629 cut-off events. For 1090/1090 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 16461 event pairs, 271 based on Foata normal form. 0/2430 useless extension candidates. Maximal degree in co-relation 5685. Up to 940 conditions per place. [2022-11-16 12:27:48,548 INFO L137 encePairwiseOnDemand]: 88/106 looper letters, 207 selfloop transitions, 33 changer transitions 0/321 dead transitions. [2022-11-16 12:27:48,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 321 transitions, 1706 flow [2022-11-16 12:27:48,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:27:48,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 12:27:48,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 930 transitions. [2022-11-16 12:27:48,553 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7311320754716981 [2022-11-16 12:27:48,553 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 930 transitions. [2022-11-16 12:27:48,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 930 transitions. [2022-11-16 12:27:48,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:48,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 930 transitions. [2022-11-16 12:27:48,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 77.5) internal successors, (930), 12 states have internal predecessors, (930), 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) [2022-11-16 12:27:48,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 106.0) internal successors, (1378), 13 states have internal predecessors, (1378), 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) [2022-11-16 12:27:48,561 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 106.0) internal successors, (1378), 13 states have internal predecessors, (1378), 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) [2022-11-16 12:27:48,562 INFO L175 Difference]: Start difference. First operand has 150 places, 143 transitions, 540 flow. Second operand 12 states and 930 transitions. [2022-11-16 12:27:48,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 321 transitions, 1706 flow [2022-11-16 12:27:48,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 321 transitions, 1682 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-11-16 12:27:48,576 INFO L231 Difference]: Finished difference. Result has 163 places, 174 transitions, 802 flow [2022-11-16 12:27:48,576 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=802, PETRI_PLACES=163, PETRI_TRANSITIONS=174} [2022-11-16 12:27:48,577 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, 60 predicate places. [2022-11-16 12:27:48,578 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 174 transitions, 802 flow [2022-11-16 12:27:48,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 63.6) internal successors, (636), 10 states have internal predecessors, (636), 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) [2022-11-16 12:27:48,579 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:48,579 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:48,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:27:48,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 12:27:48,786 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:27:48,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:48,786 INFO L85 PathProgramCache]: Analyzing trace with hash 2096745712, now seen corresponding path program 1 times [2022-11-16 12:27:48,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:48,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129201770] [2022-11-16 12:27:48,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:48,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:49,248 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:49,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:49,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129201770] [2022-11-16 12:27:49,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129201770] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:27:49,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261153159] [2022-11-16 12:27:49,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:49,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:27:49,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:27:49,252 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:27:49,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:27:49,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:49,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:27:49,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:27:49,545 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:49,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:27:49,869 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:49,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261153159] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:27:49,870 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:27:49,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-16 12:27:49,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888347914] [2022-11-16 12:27:49,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:27:49,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:27:49,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:49,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:27:49,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:27:49,878 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 106 [2022-11-16 12:27:49,881 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 174 transitions, 802 flow. Second operand has 23 states, 23 states have (on average 96.43478260869566) internal successors, (2218), 23 states have internal predecessors, (2218), 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) [2022-11-16 12:27:49,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:49,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 106 [2022-11-16 12:27:49,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:50,592 INFO L130 PetriNetUnfolder]: 163/1121 cut-off events. [2022-11-16 12:27:50,592 INFO L131 PetriNetUnfolder]: For 872/904 co-relation queries the response was YES. [2022-11-16 12:27:50,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2286 conditions, 1121 events. 163/1121 cut-off events. For 872/904 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6628 event pairs, 30 based on Foata normal form. 3/1074 useless extension candidates. Maximal degree in co-relation 2260. Up to 149 conditions per place. [2022-11-16 12:27:50,607 INFO L137 encePairwiseOnDemand]: 100/106 looper letters, 25 selfloop transitions, 30 changer transitions 0/200 dead transitions. [2022-11-16 12:27:50,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 200 transitions, 1052 flow [2022-11-16 12:27:50,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 12:27:50,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 12:27:50,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2878 transitions. [2022-11-16 12:27:50,617 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9050314465408805 [2022-11-16 12:27:50,617 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2878 transitions. [2022-11-16 12:27:50,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2878 transitions. [2022-11-16 12:27:50,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:50,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2878 transitions. [2022-11-16 12:27:50,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 95.93333333333334) internal successors, (2878), 30 states have internal predecessors, (2878), 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) [2022-11-16 12:27:50,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 106.0) internal successors, (3286), 31 states have internal predecessors, (3286), 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) [2022-11-16 12:27:50,639 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 106.0) internal successors, (3286), 31 states have internal predecessors, (3286), 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) [2022-11-16 12:27:50,640 INFO L175 Difference]: Start difference. First operand has 163 places, 174 transitions, 802 flow. Second operand 30 states and 2878 transitions. [2022-11-16 12:27:50,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 200 transitions, 1052 flow [2022-11-16 12:27:50,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 200 transitions, 1051 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:27:50,689 INFO L231 Difference]: Finished difference. Result has 195 places, 184 transitions, 953 flow [2022-11-16 12:27:50,690 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=953, PETRI_PLACES=195, PETRI_TRANSITIONS=184} [2022-11-16 12:27:50,690 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, 92 predicate places. [2022-11-16 12:27:50,690 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 184 transitions, 953 flow [2022-11-16 12:27:50,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 96.43478260869566) internal successors, (2218), 23 states have internal predecessors, (2218), 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) [2022-11-16 12:27:50,693 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:50,693 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:50,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:27:50,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 12:27:50,901 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:27:50,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:50,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1018614855, now seen corresponding path program 2 times [2022-11-16 12:27:50,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:50,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053397607] [2022-11-16 12:27:50,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:50,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:50,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:51,613 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-16 12:27:51,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:51,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053397607] [2022-11-16 12:27:51,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053397607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:51,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:27:51,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:27:51,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956937872] [2022-11-16 12:27:51,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:51,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:27:51,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:51,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:27:51,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:27:51,619 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 106 [2022-11-16 12:27:51,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 184 transitions, 953 flow. Second operand has 6 states, 6 states have (on average 72.83333333333333) internal successors, (437), 6 states have internal predecessors, (437), 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) [2022-11-16 12:27:51,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:51,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 106 [2022-11-16 12:27:51,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:52,711 INFO L130 PetriNetUnfolder]: 857/3153 cut-off events. [2022-11-16 12:27:52,711 INFO L131 PetriNetUnfolder]: For 2241/2280 co-relation queries the response was YES. [2022-11-16 12:27:52,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7464 conditions, 3153 events. 857/3153 cut-off events. For 2241/2280 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 23089 event pairs, 303 based on Foata normal form. 23/3039 useless extension candidates. Maximal degree in co-relation 7435. Up to 1471 conditions per place. [2022-11-16 12:27:52,751 INFO L137 encePairwiseOnDemand]: 91/106 looper letters, 94 selfloop transitions, 57 changer transitions 0/255 dead transitions. [2022-11-16 12:27:52,752 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 255 transitions, 1589 flow [2022-11-16 12:27:52,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:27:52,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:27:52,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 507 transitions. [2022-11-16 12:27:52,754 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7971698113207547 [2022-11-16 12:27:52,755 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 507 transitions. [2022-11-16 12:27:52,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 507 transitions. [2022-11-16 12:27:52,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:52,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 507 transitions. [2022-11-16 12:27:52,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 84.5) internal successors, (507), 6 states have internal predecessors, (507), 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) [2022-11-16 12:27:52,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 106.0) internal successors, (742), 7 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:52,760 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 106.0) internal successors, (742), 7 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:52,760 INFO L175 Difference]: Start difference. First operand has 195 places, 184 transitions, 953 flow. Second operand 6 states and 507 transitions. [2022-11-16 12:27:52,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 255 transitions, 1589 flow [2022-11-16 12:27:52,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 255 transitions, 1543 flow, removed 5 selfloop flow, removed 18 redundant places. [2022-11-16 12:27:52,781 INFO L231 Difference]: Finished difference. Result has 187 places, 235 transitions, 1441 flow [2022-11-16 12:27:52,781 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=907, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1441, PETRI_PLACES=187, PETRI_TRANSITIONS=235} [2022-11-16 12:27:52,785 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, 84 predicate places. [2022-11-16 12:27:52,786 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 235 transitions, 1441 flow [2022-11-16 12:27:52,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.83333333333333) internal successors, (437), 6 states have internal predecessors, (437), 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) [2022-11-16 12:27:52,786 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:52,787 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:52,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:27:52,787 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:27:52,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:52,788 INFO L85 PathProgramCache]: Analyzing trace with hash 920350873, now seen corresponding path program 1 times [2022-11-16 12:27:52,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:52,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559837978] [2022-11-16 12:27:52,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:52,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:52,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:53,467 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-16 12:27:53,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:53,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559837978] [2022-11-16 12:27:53,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559837978] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:53,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:27:53,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:27:53,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620669846] [2022-11-16 12:27:53,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:53,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:27:53,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:53,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:27:53,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:27:53,472 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 106 [2022-11-16 12:27:53,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 235 transitions, 1441 flow. Second operand has 6 states, 6 states have (on average 72.83333333333333) internal successors, (437), 6 states have internal predecessors, (437), 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) [2022-11-16 12:27:53,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:53,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 106 [2022-11-16 12:27:53,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:54,910 INFO L130 PetriNetUnfolder]: 1070/3524 cut-off events. [2022-11-16 12:27:54,911 INFO L131 PetriNetUnfolder]: For 6485/6552 co-relation queries the response was YES. [2022-11-16 12:27:54,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10552 conditions, 3524 events. 1070/3524 cut-off events. For 6485/6552 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 25515 event pairs, 288 based on Foata normal form. 0/3428 useless extension candidates. Maximal degree in co-relation 10518. Up to 1851 conditions per place. [2022-11-16 12:27:54,971 INFO L137 encePairwiseOnDemand]: 91/106 looper letters, 132 selfloop transitions, 71 changer transitions 0/306 dead transitions. [2022-11-16 12:27:54,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 306 transitions, 2379 flow [2022-11-16 12:27:54,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:27:54,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:27:54,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 507 transitions. [2022-11-16 12:27:54,974 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7971698113207547 [2022-11-16 12:27:54,974 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 507 transitions. [2022-11-16 12:27:54,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 507 transitions. [2022-11-16 12:27:54,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:54,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 507 transitions. [2022-11-16 12:27:54,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 84.5) internal successors, (507), 6 states have internal predecessors, (507), 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) [2022-11-16 12:27:54,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 106.0) internal successors, (742), 7 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:54,979 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 106.0) internal successors, (742), 7 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:54,980 INFO L175 Difference]: Start difference. First operand has 187 places, 235 transitions, 1441 flow. Second operand 6 states and 507 transitions. [2022-11-16 12:27:54,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 306 transitions, 2379 flow [2022-11-16 12:27:55,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 306 transitions, 2279 flow, removed 50 selfloop flow, removed 0 redundant places. [2022-11-16 12:27:55,017 INFO L231 Difference]: Finished difference. Result has 197 places, 288 transitions, 2123 flow [2022-11-16 12:27:55,018 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=1365, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2123, PETRI_PLACES=197, PETRI_TRANSITIONS=288} [2022-11-16 12:27:55,019 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, 94 predicate places. [2022-11-16 12:27:55,020 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 288 transitions, 2123 flow [2022-11-16 12:27:55,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.83333333333333) internal successors, (437), 6 states have internal predecessors, (437), 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) [2022-11-16 12:27:55,021 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:55,021 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:55,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:27:55,021 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:27:55,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:55,022 INFO L85 PathProgramCache]: Analyzing trace with hash 939476259, now seen corresponding path program 1 times [2022-11-16 12:27:55,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:55,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133462002] [2022-11-16 12:27:55,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:55,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:55,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:56,576 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-16 12:27:56,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:56,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133462002] [2022-11-16 12:27:56,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133462002] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:27:56,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738163025] [2022-11-16 12:27:56,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:56,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:27:56,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:27:56,580 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:27:56,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:27:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:56,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-16 12:27:56,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:27:57,122 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 [2022-11-16 12:27:57,208 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-16 12:27:57,208 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:27:57,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738163025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:57,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:27:57,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2022-11-16 12:27:57,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405070539] [2022-11-16 12:27:57,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:57,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:27:57,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:57,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:27:57,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:27:57,212 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 106 [2022-11-16 12:27:57,214 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 288 transitions, 2123 flow. Second operand has 10 states, 10 states have (on average 51.3) internal successors, (513), 10 states have internal predecessors, (513), 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) [2022-11-16 12:27:57,214 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:57,214 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 106 [2022-11-16 12:27:57,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:01,237 INFO L130 PetriNetUnfolder]: 3021/8095 cut-off events. [2022-11-16 12:28:01,238 INFO L131 PetriNetUnfolder]: For 18390/18390 co-relation queries the response was YES. [2022-11-16 12:28:01,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25906 conditions, 8095 events. 3021/8095 cut-off events. For 18390/18390 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 64181 event pairs, 696 based on Foata normal form. 13/7976 useless extension candidates. Maximal degree in co-relation 25867. Up to 2119 conditions per place. [2022-11-16 12:28:01,355 INFO L137 encePairwiseOnDemand]: 91/106 looper letters, 789 selfloop transitions, 36 changer transitions 0/904 dead transitions. [2022-11-16 12:28:01,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 904 transitions, 8371 flow [2022-11-16 12:28:01,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 12:28:01,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-16 12:28:01,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1292 transitions. [2022-11-16 12:28:01,360 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6415094339622641 [2022-11-16 12:28:01,361 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1292 transitions. [2022-11-16 12:28:01,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1292 transitions. [2022-11-16 12:28:01,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:01,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1292 transitions. [2022-11-16 12:28:01,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 68.0) internal successors, (1292), 19 states have internal predecessors, (1292), 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) [2022-11-16 12:28:01,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 106.0) internal successors, (2120), 20 states have internal predecessors, (2120), 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) [2022-11-16 12:28:01,373 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 106.0) internal successors, (2120), 20 states have internal predecessors, (2120), 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) [2022-11-16 12:28:01,373 INFO L175 Difference]: Start difference. First operand has 197 places, 288 transitions, 2123 flow. Second operand 19 states and 1292 transitions. [2022-11-16 12:28:01,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 904 transitions, 8371 flow [2022-11-16 12:28:01,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 904 transitions, 7861 flow, removed 255 selfloop flow, removed 0 redundant places. [2022-11-16 12:28:01,570 INFO L231 Difference]: Finished difference. Result has 230 places, 319 transitions, 2231 flow [2022-11-16 12:28:01,572 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=1953, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2231, PETRI_PLACES=230, PETRI_TRANSITIONS=319} [2022-11-16 12:28:01,573 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, 127 predicate places. [2022-11-16 12:28:01,573 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 319 transitions, 2231 flow [2022-11-16 12:28:01,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 51.3) internal successors, (513), 10 states have internal predecessors, (513), 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) [2022-11-16 12:28:01,573 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:01,574 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:01,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:01,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:01,775 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)] === [2022-11-16 12:28:01,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:01,776 INFO L85 PathProgramCache]: Analyzing trace with hash -709091671, now seen corresponding path program 2 times [2022-11-16 12:28:01,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:01,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289049004] [2022-11-16 12:28:01,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:01,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:01,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:02,887 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-16 12:28:02,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:02,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289049004] [2022-11-16 12:28:02,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289049004] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:02,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448153938] [2022-11-16 12:28:02,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:28:02,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:02,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:02,892 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:02,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:28:03,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:28:03,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:28:03,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-16 12:28:03,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:03,341 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 [2022-11-16 12:28:03,634 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-16 12:28:03,634 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:28:03,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448153938] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:03,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:28:03,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2022-11-16 12:28:03,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865553960] [2022-11-16 12:28:03,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:03,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:28:03,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:03,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:28:03,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:28:03,638 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 106 [2022-11-16 12:28:03,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 319 transitions, 2231 flow. Second operand has 10 states, 10 states have (on average 51.3) internal successors, (513), 10 states have internal predecessors, (513), 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) [2022-11-16 12:28:03,639 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:03,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 106 [2022-11-16 12:28:03,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:10,088 INFO L130 PetriNetUnfolder]: 5675/15221 cut-off events. [2022-11-16 12:28:10,089 INFO L131 PetriNetUnfolder]: For 39422/39432 co-relation queries the response was YES. [2022-11-16 12:28:10,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52488 conditions, 15221 events. 5675/15221 cut-off events. For 39422/39432 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 131532 event pairs, 1200 based on Foata normal form. 64/15227 useless extension candidates. Maximal degree in co-relation 52433. Up to 4071 conditions per place. [2022-11-16 12:28:10,341 INFO L137 encePairwiseOnDemand]: 92/106 looper letters, 757 selfloop transitions, 34 changer transitions 5/875 dead transitions. [2022-11-16 12:28:10,341 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 875 transitions, 7916 flow [2022-11-16 12:28:10,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:28:10,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 12:28:10,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 865 transitions. [2022-11-16 12:28:10,344 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6800314465408805 [2022-11-16 12:28:10,345 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 865 transitions. [2022-11-16 12:28:10,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 865 transitions. [2022-11-16 12:28:10,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:10,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 865 transitions. [2022-11-16 12:28:10,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 72.08333333333333) internal successors, (865), 12 states have internal predecessors, (865), 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) [2022-11-16 12:28:10,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 106.0) internal successors, (1378), 13 states have internal predecessors, (1378), 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) [2022-11-16 12:28:10,352 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 106.0) internal successors, (1378), 13 states have internal predecessors, (1378), 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) [2022-11-16 12:28:10,353 INFO L175 Difference]: Start difference. First operand has 230 places, 319 transitions, 2231 flow. Second operand 12 states and 865 transitions. [2022-11-16 12:28:10,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 875 transitions, 7916 flow [2022-11-16 12:28:10,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 875 transitions, 7853 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:28:10,596 INFO L231 Difference]: Finished difference. Result has 245 places, 334 transitions, 2462 flow [2022-11-16 12:28:10,596 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=2205, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2462, PETRI_PLACES=245, PETRI_TRANSITIONS=334} [2022-11-16 12:28:10,597 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, 142 predicate places. [2022-11-16 12:28:10,597 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 334 transitions, 2462 flow [2022-11-16 12:28:10,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 51.3) internal successors, (513), 10 states have internal predecessors, (513), 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) [2022-11-16 12:28:10,598 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:10,599 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:10,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:10,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:10,805 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:28:10,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:10,806 INFO L85 PathProgramCache]: Analyzing trace with hash -147027027, now seen corresponding path program 3 times [2022-11-16 12:28:10,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:10,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302803298] [2022-11-16 12:28:10,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:10,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:10,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:12,117 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-16 12:28:12,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:12,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302803298] [2022-11-16 12:28:12,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302803298] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:12,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308365331] [2022-11-16 12:28:12,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:28:12,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:12,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:12,132 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:12,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:28:12,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-16 12:28:12,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:28:12,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-16 12:28:12,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:12,776 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 [2022-11-16 12:28:12,979 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-16 12:28:12,979 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:28:12,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308365331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:12,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:28:12,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2022-11-16 12:28:12,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989999090] [2022-11-16 12:28:12,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:12,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:28:12,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:12,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:28:12,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:28:12,985 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 106 [2022-11-16 12:28:12,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 334 transitions, 2462 flow. Second operand has 10 states, 10 states have (on average 51.3) internal successors, (513), 10 states have internal predecessors, (513), 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) [2022-11-16 12:28:12,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:12,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 106 [2022-11-16 12:28:12,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:19,580 INFO L130 PetriNetUnfolder]: 6661/17117 cut-off events. [2022-11-16 12:28:19,581 INFO L131 PetriNetUnfolder]: For 54371/54393 co-relation queries the response was YES. [2022-11-16 12:28:19,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63689 conditions, 17117 events. 6661/17117 cut-off events. For 54371/54393 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 148192 event pairs, 2146 based on Foata normal form. 18/17056 useless extension candidates. Maximal degree in co-relation 63626. Up to 6051 conditions per place. [2022-11-16 12:28:19,853 INFO L137 encePairwiseOnDemand]: 92/106 looper letters, 918 selfloop transitions, 32 changer transitions 0/1029 dead transitions. [2022-11-16 12:28:19,854 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 1029 transitions, 9947 flow [2022-11-16 12:28:19,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:28:19,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 12:28:19,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 897 transitions. [2022-11-16 12:28:19,858 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7051886792452831 [2022-11-16 12:28:19,858 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 897 transitions. [2022-11-16 12:28:19,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 897 transitions. [2022-11-16 12:28:19,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:19,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 897 transitions. [2022-11-16 12:28:19,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 74.75) internal successors, (897), 12 states have internal predecessors, (897), 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) [2022-11-16 12:28:19,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 106.0) internal successors, (1378), 13 states have internal predecessors, (1378), 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) [2022-11-16 12:28:19,870 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 106.0) internal successors, (1378), 13 states have internal predecessors, (1378), 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) [2022-11-16 12:28:19,870 INFO L175 Difference]: Start difference. First operand has 245 places, 334 transitions, 2462 flow. Second operand 12 states and 897 transitions. [2022-11-16 12:28:19,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 1029 transitions, 9947 flow [2022-11-16 12:28:20,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 1029 transitions, 9810 flow, removed 68 selfloop flow, removed 1 redundant places. [2022-11-16 12:28:20,226 INFO L231 Difference]: Finished difference. Result has 264 places, 355 transitions, 2734 flow [2022-11-16 12:28:20,227 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=2413, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2734, PETRI_PLACES=264, PETRI_TRANSITIONS=355} [2022-11-16 12:28:20,228 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, 161 predicate places. [2022-11-16 12:28:20,228 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 355 transitions, 2734 flow [2022-11-16 12:28:20,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 51.3) internal successors, (513), 10 states have internal predecessors, (513), 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) [2022-11-16 12:28:20,229 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:20,229 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:20,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:20,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 12:28:20,437 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)] === [2022-11-16 12:28:20,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:20,438 INFO L85 PathProgramCache]: Analyzing trace with hash -903714676, now seen corresponding path program 1 times [2022-11-16 12:28:20,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:20,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926675126] [2022-11-16 12:28:20,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:20,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:21,663 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-16 12:28:21,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:21,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926675126] [2022-11-16 12:28:21,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926675126] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:21,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110705191] [2022-11-16 12:28:21,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:21,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:21,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:21,668 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:21,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 12:28:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:21,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-16 12:28:21,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:22,283 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 [2022-11-16 12:28:22,328 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-16 12:28:22,329 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:28:22,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110705191] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:22,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:28:22,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2022-11-16 12:28:22,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011513611] [2022-11-16 12:28:22,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:22,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:28:22,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:22,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:28:22,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:28:22,334 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 106 [2022-11-16 12:28:22,335 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 355 transitions, 2734 flow. Second operand has 10 states, 10 states have (on average 51.3) internal successors, (513), 10 states have internal predecessors, (513), 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) [2022-11-16 12:28:22,335 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:22,335 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 106 [2022-11-16 12:28:22,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:30,768 INFO L130 PetriNetUnfolder]: 6953/18565 cut-off events. [2022-11-16 12:28:30,768 INFO L131 PetriNetUnfolder]: For 63589/63631 co-relation queries the response was YES. [2022-11-16 12:28:31,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68698 conditions, 18565 events. 6953/18565 cut-off events. For 63589/63631 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 167235 event pairs, 1318 based on Foata normal form. 48/18542 useless extension candidates. Maximal degree in co-relation 68626. Up to 4245 conditions per place. [2022-11-16 12:28:31,157 INFO L137 encePairwiseOnDemand]: 91/106 looper letters, 875 selfloop transitions, 103 changer transitions 9/1066 dead transitions. [2022-11-16 12:28:31,158 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 1066 transitions, 10220 flow [2022-11-16 12:28:31,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 12:28:31,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-16 12:28:31,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1922 transitions. [2022-11-16 12:28:31,168 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5849056603773585 [2022-11-16 12:28:31,169 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1922 transitions. [2022-11-16 12:28:31,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1922 transitions. [2022-11-16 12:28:31,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:31,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1922 transitions. [2022-11-16 12:28:31,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 62.0) internal successors, (1922), 31 states have internal predecessors, (1922), 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) [2022-11-16 12:28:31,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 106.0) internal successors, (3392), 32 states have internal predecessors, (3392), 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) [2022-11-16 12:28:31,207 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 106.0) internal successors, (3392), 32 states have internal predecessors, (3392), 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) [2022-11-16 12:28:31,208 INFO L175 Difference]: Start difference. First operand has 264 places, 355 transitions, 2734 flow. Second operand 31 states and 1922 transitions. [2022-11-16 12:28:31,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 1066 transitions, 10220 flow [2022-11-16 12:28:31,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 1066 transitions, 10163 flow, removed 28 selfloop flow, removed 1 redundant places. [2022-11-16 12:28:31,693 INFO L231 Difference]: Finished difference. Result has 318 places, 412 transitions, 3745 flow [2022-11-16 12:28:31,694 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=2699, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=3745, PETRI_PLACES=318, PETRI_TRANSITIONS=412} [2022-11-16 12:28:31,695 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, 215 predicate places. [2022-11-16 12:28:31,695 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 412 transitions, 3745 flow [2022-11-16 12:28:31,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 51.3) internal successors, (513), 10 states have internal predecessors, (513), 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) [2022-11-16 12:28:31,696 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:31,696 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:31,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:31,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:31,897 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)] === [2022-11-16 12:28:31,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:31,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1953245613, now seen corresponding path program 4 times [2022-11-16 12:28:31,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:31,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312498016] [2022-11-16 12:28:31,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:31,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:33,139 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-16 12:28:33,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:33,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312498016] [2022-11-16 12:28:33,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312498016] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:33,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427738477] [2022-11-16 12:28:33,140 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 12:28:33,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:33,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:33,142 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:33,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 12:28:33,440 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 12:28:33,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:28:33,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-16 12:28:33,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:33,525 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 [2022-11-16 12:28:33,584 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 [2022-11-16 12:28:33,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:33,641 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 [2022-11-16 12:28:33,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:33,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:33,705 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 [2022-11-16 12:28:33,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:33,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:33,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:33,781 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 [2022-11-16 12:28:34,011 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:28:34,019 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 12:28:34,019 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 19 treesize of output 11 [2022-11-16 12:28:34,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:34,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:34,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:34,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2022-11-16 12:28:34,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:34,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:34,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:34,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 56 [2022-11-16 12:28:34,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:34,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:34,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:34,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 56 [2022-11-16 12:28:34,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:34,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:34,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:34,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 56 [2022-11-16 12:28:34,600 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:28:34,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 73 treesize of output 90 [2022-11-16 12:28:34,710 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-16 12:28:34,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:28:34,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427738477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:34,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:28:34,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [10] total 23 [2022-11-16 12:28:34,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997855197] [2022-11-16 12:28:34,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:34,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 12:28:34,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:34,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 12:28:34,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:28:34,715 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 106 [2022-11-16 12:28:34,717 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 412 transitions, 3745 flow. Second operand has 17 states, 17 states have (on average 50.88235294117647) internal successors, (865), 17 states have internal predecessors, (865), 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) [2022-11-16 12:28:34,717 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:34,717 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 106 [2022-11-16 12:28:34,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:44,687 INFO L130 PetriNetUnfolder]: 7111/18569 cut-off events. [2022-11-16 12:28:44,687 INFO L131 PetriNetUnfolder]: For 90589/90637 co-relation queries the response was YES. [2022-11-16 12:28:45,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74477 conditions, 18569 events. 7111/18569 cut-off events. For 90589/90637 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 165499 event pairs, 2360 based on Foata normal form. 27/18510 useless extension candidates. Maximal degree in co-relation 74380. Up to 6465 conditions per place. [2022-11-16 12:28:45,160 INFO L137 encePairwiseOnDemand]: 79/106 looper letters, 874 selfloop transitions, 136 changer transitions 0/1090 dead transitions. [2022-11-16 12:28:45,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 1090 transitions, 11513 flow [2022-11-16 12:28:45,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 12:28:45,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-16 12:28:45,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1388 transitions. [2022-11-16 12:28:45,166 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6547169811320754 [2022-11-16 12:28:45,166 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1388 transitions. [2022-11-16 12:28:45,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1388 transitions. [2022-11-16 12:28:45,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:45,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1388 transitions. [2022-11-16 12:28:45,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 69.4) internal successors, (1388), 20 states have internal predecessors, (1388), 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) [2022-11-16 12:28:45,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 106.0) internal successors, (2226), 21 states have internal predecessors, (2226), 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) [2022-11-16 12:28:45,178 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 106.0) internal successors, (2226), 21 states have internal predecessors, (2226), 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) [2022-11-16 12:28:45,178 INFO L175 Difference]: Start difference. First operand has 318 places, 412 transitions, 3745 flow. Second operand 20 states and 1388 transitions. [2022-11-16 12:28:45,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 1090 transitions, 11513 flow [2022-11-16 12:28:46,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 1090 transitions, 11114 flow, removed 138 selfloop flow, removed 6 redundant places. [2022-11-16 12:28:46,164 INFO L231 Difference]: Finished difference. Result has 349 places, 515 transitions, 5347 flow [2022-11-16 12:28:46,164 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=3419, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=5347, PETRI_PLACES=349, PETRI_TRANSITIONS=515} [2022-11-16 12:28:46,165 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, 246 predicate places. [2022-11-16 12:28:46,165 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 515 transitions, 5347 flow [2022-11-16 12:28:46,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 50.88235294117647) internal successors, (865), 17 states have internal predecessors, (865), 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) [2022-11-16 12:28:46,166 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:46,166 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:46,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:46,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 12:28:46,373 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:28:46,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:46,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1749696539, now seen corresponding path program 5 times [2022-11-16 12:28:46,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:46,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508056865] [2022-11-16 12:28:46,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:46,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:46,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:47,685 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-16 12:28:47,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:47,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508056865] [2022-11-16 12:28:47,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508056865] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:47,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355871604] [2022-11-16 12:28:47,686 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 12:28:47,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:47,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:47,688 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:47,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 12:28:47,954 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2022-11-16 12:28:47,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:28:47,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-16 12:28:47,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:48,273 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 [2022-11-16 12:28:48,454 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-16 12:28:48,455 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:28:48,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355871604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:48,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:28:48,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2022-11-16 12:28:48,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316001892] [2022-11-16 12:28:48,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:48,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:28:48,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:48,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:28:48,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:28:48,458 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 106 [2022-11-16 12:28:48,459 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 515 transitions, 5347 flow. Second operand has 10 states, 10 states have (on average 51.3) internal successors, (513), 10 states have internal predecessors, (513), 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) [2022-11-16 12:28:48,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:48,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 106 [2022-11-16 12:28:48,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:59,354 INFO L130 PetriNetUnfolder]: 8016/21456 cut-off events. [2022-11-16 12:28:59,354 INFO L131 PetriNetUnfolder]: For 136440/136528 co-relation queries the response was YES. [2022-11-16 12:28:59,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90977 conditions, 21456 events. 8016/21456 cut-off events. For 136440/136528 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 200443 event pairs, 2249 based on Foata normal form. 41/21416 useless extension candidates. Maximal degree in co-relation 90862. Up to 8240 conditions per place. [2022-11-16 12:28:59,976 INFO L137 encePairwiseOnDemand]: 92/106 looper letters, 1029 selfloop transitions, 85 changer transitions 2/1195 dead transitions. [2022-11-16 12:28:59,977 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 1195 transitions, 14185 flow [2022-11-16 12:28:59,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:28:59,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-16 12:28:59,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1041 transitions. [2022-11-16 12:28:59,981 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7014824797843666 [2022-11-16 12:28:59,981 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1041 transitions. [2022-11-16 12:28:59,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1041 transitions. [2022-11-16 12:28:59,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:59,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1041 transitions. [2022-11-16 12:28:59,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 74.35714285714286) internal successors, (1041), 14 states have internal predecessors, (1041), 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) [2022-11-16 12:28:59,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 106.0) internal successors, (1590), 15 states have internal predecessors, (1590), 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) [2022-11-16 12:28:59,989 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 106.0) internal successors, (1590), 15 states have internal predecessors, (1590), 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) [2022-11-16 12:28:59,990 INFO L175 Difference]: Start difference. First operand has 349 places, 515 transitions, 5347 flow. Second operand 14 states and 1041 transitions. [2022-11-16 12:28:59,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 1195 transitions, 14185 flow [2022-11-16 12:29:01,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 1195 transitions, 13701 flow, removed 241 selfloop flow, removed 1 redundant places. [2022-11-16 12:29:01,107 INFO L231 Difference]: Finished difference. Result has 369 places, 545 transitions, 5974 flow [2022-11-16 12:29:01,108 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=5157, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5974, PETRI_PLACES=369, PETRI_TRANSITIONS=545} [2022-11-16 12:29:01,108 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, 266 predicate places. [2022-11-16 12:29:01,108 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 545 transitions, 5974 flow [2022-11-16 12:29:01,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 51.3) internal successors, (513), 10 states have internal predecessors, (513), 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) [2022-11-16 12:29:01,109 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:29:01,109 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:01,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 12:29:01,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 12:29:01,311 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)] === [2022-11-16 12:29:01,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:01,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1835979209, now seen corresponding path program 6 times [2022-11-16 12:29:01,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:29:01,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111377773] [2022-11-16 12:29:01,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:01,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:29:01,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:02,980 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-16 12:29:02,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:29:02,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111377773] [2022-11-16 12:29:02,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111377773] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:29:02,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785751868] [2022-11-16 12:29:02,981 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 12:29:02,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:29:02,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:29:02,983 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:29:02,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 12:29:03,181 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-11-16 12:29:03,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:29:03,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-16 12:29:03,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:03,496 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 [2022-11-16 12:29:03,638 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-16 12:29:03,638 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:29:03,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785751868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:03,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:29:03,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2022-11-16 12:29:03,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401173584] [2022-11-16 12:29:03,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:03,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:29:03,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:29:03,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:29:03,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:29:03,642 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 106 [2022-11-16 12:29:03,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 545 transitions, 5974 flow. Second operand has 10 states, 10 states have (on average 51.3) internal successors, (513), 10 states have internal predecessors, (513), 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) [2022-11-16 12:29:03,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:29:03,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 106 [2022-11-16 12:29:03,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:29:14,615 INFO L130 PetriNetUnfolder]: 7954/20661 cut-off events. [2022-11-16 12:29:14,615 INFO L131 PetriNetUnfolder]: For 130869/130975 co-relation queries the response was YES. [2022-11-16 12:29:15,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89339 conditions, 20661 events. 7954/20661 cut-off events. For 130869/130975 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 188339 event pairs, 2533 based on Foata normal form. 51/20609 useless extension candidates. Maximal degree in co-relation 89216. Up to 6465 conditions per place. [2022-11-16 12:29:15,244 INFO L137 encePairwiseOnDemand]: 92/106 looper letters, 865 selfloop transitions, 91 changer transitions 0/1035 dead transitions. [2022-11-16 12:29:15,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 1035 transitions, 12137 flow [2022-11-16 12:29:15,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:29:15,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 12:29:15,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 876 transitions. [2022-11-16 12:29:15,249 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6886792452830188 [2022-11-16 12:29:15,249 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 876 transitions. [2022-11-16 12:29:15,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 876 transitions. [2022-11-16 12:29:15,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:29:15,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 876 transitions. [2022-11-16 12:29:15,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 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) [2022-11-16 12:29:15,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 106.0) internal successors, (1378), 13 states have internal predecessors, (1378), 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) [2022-11-16 12:29:15,256 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 106.0) internal successors, (1378), 13 states have internal predecessors, (1378), 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) [2022-11-16 12:29:15,256 INFO L175 Difference]: Start difference. First operand has 369 places, 545 transitions, 5974 flow. Second operand 12 states and 876 transitions. [2022-11-16 12:29:15,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 1035 transitions, 12137 flow [2022-11-16 12:29:16,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 1035 transitions, 11897 flow, removed 97 selfloop flow, removed 5 redundant places. [2022-11-16 12:29:16,201 INFO L231 Difference]: Finished difference. Result has 373 places, 520 transitions, 5671 flow [2022-11-16 12:29:16,202 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=5376, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5671, PETRI_PLACES=373, PETRI_TRANSITIONS=520} [2022-11-16 12:29:16,202 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, 270 predicate places. [2022-11-16 12:29:16,203 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 520 transitions, 5671 flow [2022-11-16 12:29:16,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 51.3) internal successors, (513), 10 states have internal predecessors, (513), 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) [2022-11-16 12:29:16,203 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:29:16,203 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:16,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 12:29:16,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 12:29:16,411 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:29:16,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:16,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1819804837, now seen corresponding path program 7 times [2022-11-16 12:29:16,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:29:16,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185994620] [2022-11-16 12:29:16,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:16,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:29:16,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:17,713 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-16 12:29:17,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:29:17,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185994620] [2022-11-16 12:29:17,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185994620] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:29:17,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190752722] [2022-11-16 12:29:17,715 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 12:29:17,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:29:17,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:29:17,716 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:29:17,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be5e68-2ef2-49fa-9699-5be3cd4e4fa5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 12:29:17,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:17,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-16 12:29:17,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:18,216 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 [2022-11-16 12:29:18,417 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-16 12:29:18,417 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:29:18,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190752722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:18,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:29:18,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2022-11-16 12:29:18,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798945359] [2022-11-16 12:29:18,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:18,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:29:18,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:29:18,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:29:18,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:29:18,423 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 106 [2022-11-16 12:29:18,424 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 520 transitions, 5671 flow. Second operand has 10 states, 10 states have (on average 51.3) internal successors, (513), 10 states have internal predecessors, (513), 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) [2022-11-16 12:29:18,424 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:29:18,424 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 106 [2022-11-16 12:29:18,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand