./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d657c-fb49-42fb-aa6f-8179337bbf9a/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d657c-fb49-42fb-aa6f-8179337bbf9a/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d657c-fb49-42fb-aa6f-8179337bbf9a/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d657c-fb49-42fb-aa6f-8179337bbf9a/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d657c-fb49-42fb-aa6f-8179337bbf9a/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d657c-fb49-42fb-aa6f-8179337bbf9a/bin/uautomizer-J5u9QxTXDZ --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 c18dd13658bb5739ed2db8c4c80ae330682b7c3cebd2ad85657518c27ca325b9 --- 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-dbf71c6-m [2022-10-17 10:10:58,219 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:10:58,225 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:10:58,280 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:10:58,281 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:10:58,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:10:58,288 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:10:58,294 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:10:58,297 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:10:58,302 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:10:58,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:10:58,306 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:10:58,306 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:10:58,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:10:58,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:10:58,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:10:58,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:10:58,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:10:58,318 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:10:58,328 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:10:58,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:10:58,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:10:58,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:10:58,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:10:58,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:10:58,347 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:10:58,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:10:58,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:10:58,350 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:10:58,352 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:10:58,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:10:58,353 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:10:58,355 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:10:58,356 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:10:58,358 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:10:58,359 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:10:58,359 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:10:58,360 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:10:58,360 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:10:58,361 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:10:58,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:10:58,362 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d657c-fb49-42fb-aa6f-8179337bbf9a/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-10-17 10:10:58,400 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:10:58,400 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:10:58,401 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:10:58,401 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:10:58,402 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:10:58,402 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:10:58,403 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:10:58,403 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:10:58,404 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:10:58,404 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:10:58,405 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:10:58,405 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 10:10:58,405 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:10:58,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:10:58,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:10:58,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:10:58,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:10:58,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:10:58,407 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-10-17 10:10:58,407 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:10:58,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:10:58,407 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:10:58,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:10:58,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:10:58,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:10:58,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:10:58,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:10:58,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:10:58,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:10:58,410 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:10:58,411 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:10:58,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:10:58,411 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:10:58,411 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:10:58,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:10:58,412 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_7f4d657c-fb49-42fb-aa6f-8179337bbf9a/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d657c-fb49-42fb-aa6f-8179337bbf9a/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c18dd13658bb5739ed2db8c4c80ae330682b7c3cebd2ad85657518c27ca325b9 [2022-10-17 10:10:58,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:10:58,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:10:58,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:10:58,716 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:10:58,717 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:10:58,718 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d657c-fb49-42fb-aa6f-8179337bbf9a/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i [2022-10-17 10:10:58,790 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d657c-fb49-42fb-aa6f-8179337bbf9a/bin/uautomizer-J5u9QxTXDZ/data/3edf3d599/b1a09b27b05c494aa8a72f1ce86120a0/FLAG1f7383e13 [2022-10-17 10:10:59,308 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:10:59,309 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d657c-fb49-42fb-aa6f-8179337bbf9a/sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i [2022-10-17 10:10:59,345 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d657c-fb49-42fb-aa6f-8179337bbf9a/bin/uautomizer-J5u9QxTXDZ/data/3edf3d599/b1a09b27b05c494aa8a72f1ce86120a0/FLAG1f7383e13 [2022-10-17 10:10:59,589 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d657c-fb49-42fb-aa6f-8179337bbf9a/bin/uautomizer-J5u9QxTXDZ/data/3edf3d599/b1a09b27b05c494aa8a72f1ce86120a0 [2022-10-17 10:10:59,592 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:10:59,595 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:10:59,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:10:59,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:10:59,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:10:59,603 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:10:59" (1/1) ... [2022-10-17 10:10:59,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36abd94d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:10:59, skipping insertion in model container [2022-10-17 10:10:59,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:10:59" (1/1) ... [2022-10-17 10:10:59,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:10:59,677 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:11:00,230 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:11:00,255 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:11:00,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:11:00,365 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:11:00,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:00 WrapperNode [2022-10-17 10:11:00,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:11:00,367 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:11:00,367 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:11:00,368 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:11:00,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:00" (1/1) ... [2022-10-17 10:11:00,393 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:00" (1/1) ... [2022-10-17 10:11:00,421 INFO L138 Inliner]: procedures = 264, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 88 [2022-10-17 10:11:00,422 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:11:00,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:11:00,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:11:00,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:11:00,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:00" (1/1) ... [2022-10-17 10:11:00,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:00" (1/1) ... [2022-10-17 10:11:00,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:00" (1/1) ... [2022-10-17 10:11:00,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:00" (1/1) ... [2022-10-17 10:11:00,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:00" (1/1) ... [2022-10-17 10:11:00,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:00" (1/1) ... [2022-10-17 10:11:00,452 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:00" (1/1) ... [2022-10-17 10:11:00,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:00" (1/1) ... [2022-10-17 10:11:00,457 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:11:00,458 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:11:00,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:11:00,458 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:11:00,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:00" (1/1) ... [2022-10-17 10:11:00,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:11:00,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d657c-fb49-42fb-aa6f-8179337bbf9a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:11:00,487 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d657c-fb49-42fb-aa6f-8179337bbf9a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:11:00,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d657c-fb49-42fb-aa6f-8179337bbf9a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:11:00,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:11:00,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:11:00,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:11:00,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:11:00,538 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-10-17 10:11:00,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:11:00,539 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-10-17 10:11:00,539 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-10-17 10:11:00,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:11:00,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:11:00,540 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 10:11:00,684 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:11:00,686 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:11:01,072 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:11:01,080 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:11:01,080 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:11:01,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:11:01 BoogieIcfgContainer [2022-10-17 10:11:01,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:11:01,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:11:01,098 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:11:01,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:11:01,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:10:59" (1/3) ... [2022-10-17 10:11:01,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44f69446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:11:01, skipping insertion in model container [2022-10-17 10:11:01,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:00" (2/3) ... [2022-10-17 10:11:01,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44f69446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:11:01, skipping insertion in model container [2022-10-17 10:11:01,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:11:01" (3/3) ... [2022-10-17 10:11:01,104 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_07-tricky_address2.i [2022-10-17 10:11:01,113 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:11:01,124 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:11:01,124 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-10-17 10:11:01,124 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:11:01,199 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 10:11:01,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 103 transitions, 211 flow [2022-10-17 10:11:01,292 INFO L130 PetriNetUnfolder]: 4/102 cut-off events. [2022-10-17 10:11:01,293 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:11:01,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 102 events. 4/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 84 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2022-10-17 10:11:01,297 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 103 transitions, 211 flow [2022-10-17 10:11:01,302 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 102 transitions, 207 flow [2022-10-17 10:11:01,313 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:11:01,320 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;@4378d731, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:11:01,320 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-10-17 10:11:01,339 INFO L130 PetriNetUnfolder]: 4/56 cut-off events. [2022-10-17 10:11:01,339 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:11:01,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:11:01,340 INFO L208 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] [2022-10-17 10:11:01,341 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:11:01,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:01,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1298122157, now seen corresponding path program 1 times [2022-10-17 10:11:01,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:01,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709315527] [2022-10-17 10:11:01,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:01,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:01,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:01,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:11:01,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:01,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709315527] [2022-10-17 10:11:01,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709315527] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:11:01,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:11:01,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:11:01,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980461822] [2022-10-17 10:11:01,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:11:01,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:11:01,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:01,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:11:01,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:11:01,673 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 103 [2022-10-17 10:11:01,678 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 102 transitions, 207 flow. Second operand has 2 states, 2 states have (on average 100.0) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:01,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:11:01,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 103 [2022-10-17 10:11:01,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:11:01,721 INFO L130 PetriNetUnfolder]: 1/99 cut-off events. [2022-10-17 10:11:01,722 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-10-17 10:11:01,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 99 events. 1/99 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 83 event pairs, 0 based on Foata normal form. 3/95 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2022-10-17 10:11:01,723 INFO L137 encePairwiseOnDemand]: 100/103 looper letters, 1 selfloop transitions, 0 changer transitions 1/99 dead transitions. [2022-10-17 10:11:01,724 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 99 transitions, 203 flow [2022-10-17 10:11:01,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:11:01,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-10-17 10:11:01,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 202 transitions. [2022-10-17 10:11:01,737 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9805825242718447 [2022-10-17 10:11:01,738 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 202 transitions. [2022-10-17 10:11:01,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 202 transitions. [2022-10-17 10:11:01,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:11:01,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 202 transitions. [2022-10-17 10:11:01,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 101.0) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:01,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:01,750 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:01,752 INFO L175 Difference]: Start difference. First operand has 102 places, 102 transitions, 207 flow. Second operand 2 states and 202 transitions. [2022-10-17 10:11:01,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 99 transitions, 203 flow [2022-10-17 10:11:01,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 99 transitions, 202 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-10-17 10:11:01,760 INFO L231 Difference]: Finished difference. Result has 102 places, 98 transitions, 198 flow [2022-10-17 10:11:01,763 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=198, PETRI_PLACES=102, PETRI_TRANSITIONS=98} [2022-10-17 10:11:01,767 INFO L287 CegarLoopForPetriNet]: 102 programPoint places, 0 predicate places. [2022-10-17 10:11:01,767 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 98 transitions, 198 flow [2022-10-17 10:11:01,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 100.0) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:01,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:11:01,768 INFO L208 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] [2022-10-17 10:11:01,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:11:01,770 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)] === [2022-10-17 10:11:01,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:01,772 INFO L85 PathProgramCache]: Analyzing trace with hash -779087186, now seen corresponding path program 1 times [2022-10-17 10:11:01,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:01,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332341441] [2022-10-17 10:11:01,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:01,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:01,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:01,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:11:01,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:01,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332341441] [2022-10-17 10:11:01,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332341441] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:11:01,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:11:01,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:11:01,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773768796] [2022-10-17 10:11:01,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:11:01,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:11:01,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:01,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:11:01,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:11:01,965 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 103 [2022-10-17 10:11:01,966 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 98 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:01,966 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:11:01,966 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 103 [2022-10-17 10:11:01,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:11:02,054 INFO L130 PetriNetUnfolder]: 1/102 cut-off events. [2022-10-17 10:11:02,055 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:11:02,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 102 events. 1/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 79 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 116. Up to 9 conditions per place. [2022-10-17 10:11:02,061 INFO L137 encePairwiseOnDemand]: 100/103 looper letters, 10 selfloop transitions, 2 changer transitions 0/102 dead transitions. [2022-10-17 10:11:02,061 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 102 transitions, 230 flow [2022-10-17 10:11:02,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:11:02,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:11:02,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 289 transitions. [2022-10-17 10:11:02,065 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9352750809061489 [2022-10-17 10:11:02,065 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 289 transitions. [2022-10-17 10:11:02,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 289 transitions. [2022-10-17 10:11:02,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:11:02,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 289 transitions. [2022-10-17 10:11:02,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2022-10-17 10:11:02,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:02,071 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:02,072 INFO L175 Difference]: Start difference. First operand has 102 places, 98 transitions, 198 flow. Second operand 3 states and 289 transitions. [2022-10-17 10:11:02,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 102 transitions, 230 flow [2022-10-17 10:11:02,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 102 transitions, 230 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-10-17 10:11:02,076 INFO L231 Difference]: Finished difference. Result has 104 places, 99 transitions, 210 flow [2022-10-17 10:11:02,076 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=210, PETRI_PLACES=104, PETRI_TRANSITIONS=99} [2022-10-17 10:11:02,077 INFO L287 CegarLoopForPetriNet]: 102 programPoint places, 2 predicate places. [2022-10-17 10:11:02,077 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 99 transitions, 210 flow [2022-10-17 10:11:02,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:02,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:11:02,078 INFO L208 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, 1, 1] [2022-10-17 10:11:02,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:11:02,079 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)] === [2022-10-17 10:11:02,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:02,080 INFO L85 PathProgramCache]: Analyzing trace with hash 624473633, now seen corresponding path program 1 times [2022-10-17 10:11:02,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:02,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37839731] [2022-10-17 10:11:02,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:02,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:02,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:02,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:11:02,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:02,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37839731] [2022-10-17 10:11:02,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37839731] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:11:02,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492587594] [2022-10-17 10:11:02,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:02,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:11:02,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d657c-fb49-42fb-aa6f-8179337bbf9a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:11:02,256 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d657c-fb49-42fb-aa6f-8179337bbf9a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:11:02,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d657c-fb49-42fb-aa6f-8179337bbf9a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:11:02,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:02,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:11:02,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:11:02,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:11:02,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:11:02,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:11:02,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492587594] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:11:02,539 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:11:02,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-10-17 10:11:02,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025666857] [2022-10-17 10:11:02,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:11:02,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 10:11:02,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:02,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 10:11:02,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:11:02,548 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 103 [2022-10-17 10:11:02,551 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 99 transitions, 210 flow. Second operand has 10 states, 10 states have (on average 93.1) internal successors, (931), 10 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:02,552 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:11:02,553 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 103 [2022-10-17 10:11:02,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:11:02,695 INFO L130 PetriNetUnfolder]: 1/109 cut-off events. [2022-10-17 10:11:02,695 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-10-17 10:11:02,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 109 events. 1/109 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 2/106 useless extension candidates. Maximal degree in co-relation 137. Up to 6 conditions per place. [2022-10-17 10:11:02,696 INFO L137 encePairwiseOnDemand]: 97/103 looper letters, 11 selfloop transitions, 9 changer transitions 0/109 dead transitions. [2022-10-17 10:11:02,696 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 109 transitions, 272 flow [2022-10-17 10:11:02,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:11:02,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:11:02,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 841 transitions. [2022-10-17 10:11:02,701 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9072276159654801 [2022-10-17 10:11:02,701 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 841 transitions. [2022-10-17 10:11:02,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 841 transitions. [2022-10-17 10:11:02,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:11:02,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 841 transitions. [2022-10-17 10:11:02,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 93.44444444444444) internal successors, (841), 9 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:02,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 103.0) internal successors, (1030), 10 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:02,711 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 103.0) internal successors, (1030), 10 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:02,712 INFO L175 Difference]: Start difference. First operand has 104 places, 99 transitions, 210 flow. Second operand 9 states and 841 transitions. [2022-10-17 10:11:02,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 109 transitions, 272 flow [2022-10-17 10:11:02,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 109 transitions, 270 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-10-17 10:11:02,716 INFO L231 Difference]: Finished difference. Result has 114 places, 105 transitions, 258 flow [2022-10-17 10:11:02,716 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=258, PETRI_PLACES=114, PETRI_TRANSITIONS=105} [2022-10-17 10:11:02,717 INFO L287 CegarLoopForPetriNet]: 102 programPoint places, 12 predicate places. [2022-10-17 10:11:02,718 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 105 transitions, 258 flow [2022-10-17 10:11:02,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 93.1) internal successors, (931), 10 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:02,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:11:02,719 INFO L208 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, 1, 1] [2022-10-17 10:11:02,743 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d657c-fb49-42fb-aa6f-8179337bbf9a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-10-17 10:11:02,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d657c-fb49-42fb-aa6f-8179337bbf9a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:11:02,943 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)] === [2022-10-17 10:11:02,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:02,944 INFO L85 PathProgramCache]: Analyzing trace with hash 653292097, now seen corresponding path program 2 times [2022-10-17 10:11:02,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:02,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821950286] [2022-10-17 10:11:02,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:02,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:03,153 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:11:03,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:03,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821950286] [2022-10-17 10:11:03,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821950286] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:11:03,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738104606] [2022-10-17 10:11:03,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:11:03,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:11:03,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d657c-fb49-42fb-aa6f-8179337bbf9a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:11:03,155 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d657c-fb49-42fb-aa6f-8179337bbf9a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:11:03,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d657c-fb49-42fb-aa6f-8179337bbf9a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 10:11:03,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-17 10:11:03,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:11:03,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-17 10:11:03,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:11:03,287 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-10-17 10:11:03,307 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 28 treesize of output 27 [2022-10-17 10:11:03,337 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 10:11:03,338 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 40 treesize of output 42 [2022-10-17 10:11:03,377 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 10:11:03,377 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 52 treesize of output 57 [2022-10-17 10:11:03,411 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-17 10:11:03,411 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:11:03,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738104606] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:11:03,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:11:03,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2022-10-17 10:11:03,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612736773] [2022-10-17 10:11:03,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:11:03,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:11:03,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:03,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:11:03,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-10-17 10:11:03,415 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 103 [2022-10-17 10:11:03,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 105 transitions, 258 flow. Second operand has 6 states, 6 states have (on average 64.33333333333333) internal successors, (386), 6 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:03,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:11:03,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 103 [2022-10-17 10:11:03,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:11:03,956 INFO L130 PetriNetUnfolder]: 308/1005 cut-off events. [2022-10-17 10:11:03,956 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-10-17 10:11:03,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1714 conditions, 1005 events. 308/1005 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 6228 event pairs, 128 based on Foata normal form. 0/909 useless extension candidates. Maximal degree in co-relation 1707. Up to 393 conditions per place. [2022-10-17 10:11:03,969 INFO L137 encePairwiseOnDemand]: 92/103 looper letters, 97 selfloop transitions, 22 changer transitions 0/186 dead transitions. [2022-10-17 10:11:03,969 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 186 transitions, 658 flow [2022-10-17 10:11:03,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:11:03,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-10-17 10:11:03,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 492 transitions. [2022-10-17 10:11:03,972 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7961165048543689 [2022-10-17 10:11:03,972 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 492 transitions. [2022-10-17 10:11:03,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 492 transitions. [2022-10-17 10:11:03,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:11:03,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 492 transitions. [2022-10-17 10:11:03,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:03,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 103.0) internal successors, (721), 7 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:03,977 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 103.0) internal successors, (721), 7 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:03,977 INFO L175 Difference]: Start difference. First operand has 114 places, 105 transitions, 258 flow. Second operand 6 states and 492 transitions. [2022-10-17 10:11:03,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 186 transitions, 658 flow [2022-10-17 10:11:03,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 186 transitions, 652 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-10-17 10:11:03,985 INFO L231 Difference]: Finished difference. Result has 122 places, 127 transitions, 398 flow [2022-10-17 10:11:03,986 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=398, PETRI_PLACES=122, PETRI_TRANSITIONS=127} [2022-10-17 10:11:03,988 INFO L287 CegarLoopForPetriNet]: 102 programPoint places, 20 predicate places. [2022-10-17 10:11:03,988 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 127 transitions, 398 flow [2022-10-17 10:11:03,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 64.33333333333333) internal successors, (386), 6 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:03,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:11:03,990 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:11:04,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d657c-fb49-42fb-aa6f-8179337bbf9a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:11:04,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d657c-fb49-42fb-aa6f-8179337bbf9a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:11:04,204 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:11:04,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:04,205 INFO L85 PathProgramCache]: Analyzing trace with hash -406389930, now seen corresponding path program 1 times [2022-10-17 10:11:04,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:04,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532309535] [2022-10-17 10:11:04,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:04,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:04,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:04,411 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:11:04,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:04,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532309535] [2022-10-17 10:11:04,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532309535] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:11:04,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042863576] [2022-10-17 10:11:04,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:04,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:11:04,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d657c-fb49-42fb-aa6f-8179337bbf9a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:11:04,419 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d657c-fb49-42fb-aa6f-8179337bbf9a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:11:04,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d657c-fb49-42fb-aa6f-8179337bbf9a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 10:11:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:04,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 10:11:04,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:11:04,601 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:11:04,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:11:04,705 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:11:04,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042863576] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:11:04,705 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:11:04,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-10-17 10:11:04,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940704922] [2022-10-17 10:11:04,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:11:04,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-17 10:11:04,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:04,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-17 10:11:04,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-10-17 10:11:04,713 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 103 [2022-10-17 10:11:04,715 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 127 transitions, 398 flow. Second operand has 18 states, 18 states have (on average 93.27777777777777) internal successors, (1679), 18 states have internal predecessors, (1679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:04,715 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:11:04,715 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 103 [2022-10-17 10:11:04,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:11:05,002 INFO L130 PetriNetUnfolder]: 34/376 cut-off events. [2022-10-17 10:11:05,002 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2022-10-17 10:11:05,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 640 conditions, 376 events. 34/376 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1765 event pairs, 9 based on Foata normal form. 4/356 useless extension candidates. Maximal degree in co-relation 628. Up to 53 conditions per place. [2022-10-17 10:11:05,006 INFO L137 encePairwiseOnDemand]: 97/103 looper letters, 19 selfloop transitions, 21 changer transitions 0/151 dead transitions. [2022-10-17 10:11:05,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 151 transitions, 578 flow [2022-10-17 10:11:05,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-10-17 10:11:05,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-10-17 10:11:05,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1955 transitions. [2022-10-17 10:11:05,014 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.903837263060564 [2022-10-17 10:11:05,014 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1955 transitions. [2022-10-17 10:11:05,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1955 transitions. [2022-10-17 10:11:05,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:11:05,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1955 transitions. [2022-10-17 10:11:05,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 93.0952380952381) internal successors, (1955), 21 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:05,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 103.0) internal successors, (2266), 22 states have internal predecessors, (2266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:05,031 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 103.0) internal successors, (2266), 22 states have internal predecessors, (2266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:05,032 INFO L175 Difference]: Start difference. First operand has 122 places, 127 transitions, 398 flow. Second operand 21 states and 1955 transitions. [2022-10-17 10:11:05,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 151 transitions, 578 flow [2022-10-17 10:11:05,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 151 transitions, 578 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-10-17 10:11:05,045 INFO L231 Difference]: Finished difference. Result has 147 places, 140 transitions, 528 flow [2022-10-17 10:11:05,045 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=528, PETRI_PLACES=147, PETRI_TRANSITIONS=140} [2022-10-17 10:11:05,049 INFO L287 CegarLoopForPetriNet]: 102 programPoint places, 45 predicate places. [2022-10-17 10:11:05,049 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 140 transitions, 528 flow [2022-10-17 10:11:05,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 93.27777777777777) internal successors, (1679), 18 states have internal predecessors, (1679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:05,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:11:05,050 INFO L208 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, 1, 1] [2022-10-17 10:11:05,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d657c-fb49-42fb-aa6f-8179337bbf9a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:11:05,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d657c-fb49-42fb-aa6f-8179337bbf9a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:11:05,276 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:11:05,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:05,277 INFO L85 PathProgramCache]: Analyzing trace with hash 232143766, now seen corresponding path program 2 times [2022-10-17 10:11:05,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:05,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719221128] [2022-10-17 10:11:05,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:05,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:05,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:05,742 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:11:05,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:05,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719221128] [2022-10-17 10:11:05,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719221128] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:11:05,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277136770] [2022-10-17 10:11:05,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:11:05,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:11:05,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d657c-fb49-42fb-aa6f-8179337bbf9a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:11:05,748 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d657c-fb49-42fb-aa6f-8179337bbf9a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:11:05,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d657c-fb49-42fb-aa6f-8179337bbf9a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 10:11:05,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-17 10:11:05,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:11:05,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-17 10:11:05,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:11:05,874 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-10-17 10:11:05,900 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 28 treesize of output 27 [2022-10-17 10:11:05,939 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 10:11:05,940 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 40 treesize of output 42 [2022-10-17 10:11:05,988 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 10:11:05,989 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 52 treesize of output 57 [2022-10-17 10:11:06,024 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-10-17 10:11:06,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:11:06,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277136770] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:11:06,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:11:06,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 21 [2022-10-17 10:11:06,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057733323] [2022-10-17 10:11:06,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:11:06,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:11:06,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:06,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:11:06,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-10-17 10:11:06,028 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 103 [2022-10-17 10:11:06,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 140 transitions, 528 flow. Second operand has 6 states, 6 states have (on average 63.5) internal successors, (381), 6 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:06,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:11:06,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 103 [2022-10-17 10:11:06,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:11:06,643 INFO L130 PetriNetUnfolder]: 509/1633 cut-off events. [2022-10-17 10:11:06,643 INFO L131 PetriNetUnfolder]: For 383/385 co-relation queries the response was YES. [2022-10-17 10:11:06,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3331 conditions, 1633 events. 509/1633 cut-off events. For 383/385 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 11340 event pairs, 224 based on Foata normal form. 2/1489 useless extension candidates. Maximal degree in co-relation 3314. Up to 756 conditions per place. [2022-10-17 10:11:06,657 INFO L137 encePairwiseOnDemand]: 88/103 looper letters, 102 selfloop transitions, 36 changer transitions 2/217 dead transitions. [2022-10-17 10:11:06,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 217 transitions, 1000 flow [2022-10-17 10:11:06,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:11:06,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-10-17 10:11:06,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 478 transitions. [2022-10-17 10:11:06,663 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7734627831715211 [2022-10-17 10:11:06,663 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 478 transitions. [2022-10-17 10:11:06,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 478 transitions. [2022-10-17 10:11:06,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:11:06,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 478 transitions. [2022-10-17 10:11:06,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 79.66666666666667) internal successors, (478), 6 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:06,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 103.0) internal successors, (721), 7 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:06,669 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 103.0) internal successors, (721), 7 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:06,669 INFO L175 Difference]: Start difference. First operand has 147 places, 140 transitions, 528 flow. Second operand 6 states and 478 transitions. [2022-10-17 10:11:06,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 217 transitions, 1000 flow [2022-10-17 10:11:06,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 217 transitions, 976 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-10-17 10:11:06,679 INFO L231 Difference]: Finished difference. Result has 150 places, 172 transitions, 756 flow [2022-10-17 10:11:06,680 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=756, PETRI_PLACES=150, PETRI_TRANSITIONS=172} [2022-10-17 10:11:06,682 INFO L287 CegarLoopForPetriNet]: 102 programPoint places, 48 predicate places. [2022-10-17 10:11:06,683 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 172 transitions, 756 flow [2022-10-17 10:11:06,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.5) internal successors, (381), 6 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:06,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:11:06,683 INFO L208 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, 1, 1, 1] [2022-10-17 10:11:06,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d657c-fb49-42fb-aa6f-8179337bbf9a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:11:06,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d657c-fb49-42fb-aa6f-8179337bbf9a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:11:06,901 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:11:06,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:06,902 INFO L85 PathProgramCache]: Analyzing trace with hash -109360466, now seen corresponding path program 1 times [2022-10-17 10:11:06,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:06,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331172849] [2022-10-17 10:11:06,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:06,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:06,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:07,243 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:11:07,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:07,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331172849] [2022-10-17 10:11:07,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331172849] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:11:07,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755179037] [2022-10-17 10:11:07,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:07,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:11:07,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d657c-fb49-42fb-aa6f-8179337bbf9a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:11:07,248 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d657c-fb49-42fb-aa6f-8179337bbf9a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:11:07,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d657c-fb49-42fb-aa6f-8179337bbf9a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-17 10:11:07,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:07,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-17 10:11:07,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:11:07,418 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:11:07,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:11:07,626 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:11:07,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755179037] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:11:07,627 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:11:07,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-10-17 10:11:07,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081944795] [2022-10-17 10:11:07,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:11:07,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-10-17 10:11:07,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:07,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-10-17 10:11:07,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-10-17 10:11:07,632 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 103 [2022-10-17 10:11:07,635 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 172 transitions, 756 flow. Second operand has 23 states, 23 states have (on average 93.43478260869566) internal successors, (2149), 23 states have internal predecessors, (2149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:07,635 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:11:07,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 103 [2022-10-17 10:11:07,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:11:08,095 INFO L130 PetriNetUnfolder]: 111/800 cut-off events. [2022-10-17 10:11:08,095 INFO L131 PetriNetUnfolder]: For 397/407 co-relation queries the response was YES. [2022-10-17 10:11:08,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1613 conditions, 800 events. 111/800 cut-off events. For 397/407 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5445 event pairs, 26 based on Foata normal form. 11/756 useless extension candidates. Maximal degree in co-relation 1591. Up to 129 conditions per place. [2022-10-17 10:11:08,103 INFO L137 encePairwiseOnDemand]: 97/103 looper letters, 25 selfloop transitions, 30 changer transitions 0/198 dead transitions. [2022-10-17 10:11:08,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 198 transitions, 1006 flow [2022-10-17 10:11:08,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-10-17 10:11:08,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-10-17 10:11:08,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2788 transitions. [2022-10-17 10:11:08,112 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9022653721682848 [2022-10-17 10:11:08,113 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2788 transitions. [2022-10-17 10:11:08,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2788 transitions. [2022-10-17 10:11:08,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:11:08,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2788 transitions. [2022-10-17 10:11:08,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 92.93333333333334) internal successors, (2788), 30 states have internal predecessors, (2788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:08,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 103.0) internal successors, (3193), 31 states have internal predecessors, (3193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:08,134 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 103.0) internal successors, (3193), 31 states have internal predecessors, (3193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:08,134 INFO L175 Difference]: Start difference. First operand has 150 places, 172 transitions, 756 flow. Second operand 30 states and 2788 transitions. [2022-10-17 10:11:08,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 198 transitions, 1006 flow [2022-10-17 10:11:08,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 198 transitions, 982 flow, removed 12 selfloop flow, removed 0 redundant places. [2022-10-17 10:11:08,146 INFO L231 Difference]: Finished difference. Result has 182 places, 182 transitions, 884 flow [2022-10-17 10:11:08,146 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=884, PETRI_PLACES=182, PETRI_TRANSITIONS=182} [2022-10-17 10:11:08,147 INFO L287 CegarLoopForPetriNet]: 102 programPoint places, 80 predicate places. [2022-10-17 10:11:08,147 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 182 transitions, 884 flow [2022-10-17 10:11:08,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 93.43478260869566) internal successors, (2149), 23 states have internal predecessors, (2149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:08,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:11:08,149 INFO L208 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] [2022-10-17 10:11:08,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d657c-fb49-42fb-aa6f-8179337bbf9a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-17 10:11:08,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4d657c-fb49-42fb-aa6f-8179337bbf9a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:11:08,372 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:11:08,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:08,373 INFO L85 PathProgramCache]: Analyzing trace with hash 827906497, now seen corresponding path program 2 times [2022-10-17 10:11:08,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:08,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385258811] [2022-10-17 10:11:08,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:08,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:09,112 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-10-17 10:11:09,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:09,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385258811] [2022-10-17 10:11:09,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385258811] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:11:09,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:11:09,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:11:09,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440929605] [2022-10-17 10:11:09,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:11:09,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:11:09,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:09,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:11:09,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:11:09,116 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 103 [2022-10-17 10:11:09,117 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 182 transitions, 884 flow. Second operand has 6 states, 6 states have (on average 65.16666666666667) internal successors, (391), 6 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:09,117 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:11:09,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 103 [2022-10-17 10:11:09,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:11:09,775 INFO L130 PetriNetUnfolder]: 577/1990 cut-off events. [2022-10-17 10:11:09,776 INFO L131 PetriNetUnfolder]: For 1168/1168 co-relation queries the response was YES. [2022-10-17 10:11:09,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4857 conditions, 1990 events. 577/1990 cut-off events. For 1168/1168 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 14978 event pairs, 176 based on Foata normal form. 0/1886 useless extension candidates. Maximal degree in co-relation 4831. Up to 831 conditions per place. [2022-10-17 10:11:09,797 INFO L137 encePairwiseOnDemand]: 92/103 looper letters, 155 selfloop transitions, 49 changer transitions 0/298 dead transitions. [2022-10-17 10:11:09,797 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 298 transitions, 1811 flow [2022-10-17 10:11:09,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:11:09,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-10-17 10:11:09,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 497 transitions. [2022-10-17 10:11:09,800 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8042071197411004 [2022-10-17 10:11:09,800 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 497 transitions. [2022-10-17 10:11:09,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 497 transitions. [2022-10-17 10:11:09,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:11:09,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 497 transitions. [2022-10-17 10:11:09,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:09,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 103.0) internal successors, (721), 7 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:09,805 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 103.0) internal successors, (721), 7 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:09,805 INFO L175 Difference]: Start difference. First operand has 182 places, 182 transitions, 884 flow. Second operand 6 states and 497 transitions. [2022-10-17 10:11:09,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 298 transitions, 1811 flow [2022-10-17 10:11:09,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 298 transitions, 1765 flow, removed 5 selfloop flow, removed 18 redundant places. [2022-10-17 10:11:09,822 INFO L231 Difference]: Finished difference. Result has 173 places, 223 transitions, 1254 flow [2022-10-17 10:11:09,823 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1254, PETRI_PLACES=173, PETRI_TRANSITIONS=223} [2022-10-17 10:11:09,824 INFO L287 CegarLoopForPetriNet]: 102 programPoint places, 71 predicate places. [2022-10-17 10:11:09,824 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 223 transitions, 1254 flow [2022-10-17 10:11:09,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.16666666666667) internal successors, (391), 6 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:09,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:11:09,825 INFO L208 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] [2022-10-17 10:11:09,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:11:09,825 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)] === [2022-10-17 10:11:09,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:09,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1432249786, now seen corresponding path program 1 times [2022-10-17 10:11:09,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:09,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031881151] [2022-10-17 10:11:09,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:09,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:09,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:10,312 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-10-17 10:11:10,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:10,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031881151] [2022-10-17 10:11:10,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031881151] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:11:10,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:11:10,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:11:10,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162312231] [2022-10-17 10:11:10,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:11:10,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:11:10,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:10,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:11:10,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:11:10,315 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 103 [2022-10-17 10:11:10,316 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 223 transitions, 1254 flow. Second operand has 6 states, 6 states have (on average 64.33333333333333) internal successors, (386), 6 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:10,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:11:10,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 103 [2022-10-17 10:11:10,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:11:11,193 INFO L130 PetriNetUnfolder]: 872/2760 cut-off events. [2022-10-17 10:11:11,193 INFO L131 PetriNetUnfolder]: For 2483/2483 co-relation queries the response was YES. [2022-10-17 10:11:11,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7509 conditions, 2760 events. 872/2760 cut-off events. For 2483/2483 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 21969 event pairs, 305 based on Foata normal form. 0/2666 useless extension candidates. Maximal degree in co-relation 7478. Up to 1296 conditions per place. [2022-10-17 10:11:11,223 INFO L137 encePairwiseOnDemand]: 88/103 looper letters, 153 selfloop transitions, 72 changer transitions 45/361 dead transitions. [2022-10-17 10:11:11,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 361 transitions, 2510 flow [2022-10-17 10:11:11,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:11:11,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-10-17 10:11:11,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 487 transitions. [2022-10-17 10:11:11,226 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7880258899676376 [2022-10-17 10:11:11,226 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 487 transitions. [2022-10-17 10:11:11,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 487 transitions. [2022-10-17 10:11:11,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:11:11,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 487 transitions. [2022-10-17 10:11:11,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 81.16666666666667) internal successors, (487), 6 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:11,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 103.0) internal successors, (721), 7 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:11,230 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 103.0) internal successors, (721), 7 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:11,231 INFO L175 Difference]: Start difference. First operand has 173 places, 223 transitions, 1254 flow. Second operand 6 states and 487 transitions. [2022-10-17 10:11:11,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 361 transitions, 2510 flow [2022-10-17 10:11:11,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 361 transitions, 2508 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-10-17 10:11:11,260 INFO L231 Difference]: Finished difference. Result has 182 places, 265 transitions, 1792 flow [2022-10-17 10:11:11,261 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=1252, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1792, PETRI_PLACES=182, PETRI_TRANSITIONS=265} [2022-10-17 10:11:11,262 INFO L287 CegarLoopForPetriNet]: 102 programPoint places, 80 predicate places. [2022-10-17 10:11:11,262 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 265 transitions, 1792 flow [2022-10-17 10:11:11,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 64.33333333333333) internal successors, (386), 6 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:11,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:11:11,263 INFO L208 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, 1, 1, 1, 1, 1] [2022-10-17 10:11:11,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 10:11:11,264 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:11:11,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:11,264 INFO L85 PathProgramCache]: Analyzing trace with hash 255639728, now seen corresponding path program 1 times [2022-10-17 10:11:11,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:11,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819450111] [2022-10-17 10:11:11,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:11,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:11,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:12,382 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-10-17 10:11:12,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:12,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819450111] [2022-10-17 10:11:12,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819450111] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:11:12,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:11:12,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-10-17 10:11:12,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087917739] [2022-10-17 10:11:12,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:11:12,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-17 10:11:12,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:12,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 10:11:12,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:11:12,386 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 103 [2022-10-17 10:11:12,387 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 265 transitions, 1792 flow. Second operand has 11 states, 11 states have (on average 58.45454545454545) internal successors, (643), 11 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:12,388 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:11:12,388 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 103 [2022-10-17 10:11:12,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:11:14,853 INFO L130 PetriNetUnfolder]: 1800/5584 cut-off events. [2022-10-17 10:11:14,853 INFO L131 PetriNetUnfolder]: For 9390/9441 co-relation queries the response was YES. [2022-10-17 10:11:14,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17942 conditions, 5584 events. 1800/5584 cut-off events. For 9390/9441 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 52691 event pairs, 315 based on Foata normal form. 103/5679 useless extension candidates. Maximal degree in co-relation 17906. Up to 1565 conditions per place. [2022-10-17 10:11:14,920 INFO L137 encePairwiseOnDemand]: 83/103 looper letters, 432 selfloop transitions, 70 changer transitions 169/757 dead transitions. [2022-10-17 10:11:14,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 757 transitions, 6775 flow [2022-10-17 10:11:14,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-17 10:11:14,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-10-17 10:11:14,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1204 transitions. [2022-10-17 10:11:14,927 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6876070816676185 [2022-10-17 10:11:14,927 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1204 transitions. [2022-10-17 10:11:14,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1204 transitions. [2022-10-17 10:11:14,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:11:14,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1204 transitions. [2022-10-17 10:11:14,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 70.82352941176471) internal successors, (1204), 17 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:14,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 103.0) internal successors, (1854), 18 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:14,941 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 103.0) internal successors, (1854), 18 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:14,941 INFO L175 Difference]: Start difference. First operand has 182 places, 265 transitions, 1792 flow. Second operand 17 states and 1204 transitions. [2022-10-17 10:11:14,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 757 transitions, 6775 flow [2022-10-17 10:11:15,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 757 transitions, 6701 flow, removed 37 selfloop flow, removed 0 redundant places. [2022-10-17 10:11:15,042 INFO L231 Difference]: Finished difference. Result has 213 places, 331 transitions, 2783 flow [2022-10-17 10:11:15,042 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=1764, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2783, PETRI_PLACES=213, PETRI_TRANSITIONS=331} [2022-10-17 10:11:15,043 INFO L287 CegarLoopForPetriNet]: 102 programPoint places, 111 predicate places. [2022-10-17 10:11:15,043 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 331 transitions, 2783 flow [2022-10-17 10:11:15,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 58.45454545454545) internal successors, (643), 11 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:15,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:11:15,044 INFO L208 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, 1, 1, 1, 1, 1] [2022-10-17 10:11:15,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-17 10:11:15,045 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:11:15,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:15,045 INFO L85 PathProgramCache]: Analyzing trace with hash -571334816, now seen corresponding path program 2 times [2022-10-17 10:11:15,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:15,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005416122] [2022-10-17 10:11:15,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:15,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:15,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:15,935 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-10-17 10:11:15,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:15,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005416122] [2022-10-17 10:11:15,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005416122] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:11:15,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:11:15,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 10:11:15,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653072665] [2022-10-17 10:11:15,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:11:15,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 10:11:15,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:15,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 10:11:15,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:11:15,942 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 103 [2022-10-17 10:11:15,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 331 transitions, 2783 flow. Second operand has 10 states, 10 states have (on average 58.7) internal successors, (587), 10 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:15,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:11:15,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 103 [2022-10-17 10:11:15,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:11:19,181 INFO L130 PetriNetUnfolder]: 2723/8497 cut-off events. [2022-10-17 10:11:19,181 INFO L131 PetriNetUnfolder]: For 25501/25586 co-relation queries the response was YES. [2022-10-17 10:11:19,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31683 conditions, 8497 events. 2723/8497 cut-off events. For 25501/25586 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 86988 event pairs, 516 based on Foata normal form. 112/8593 useless extension candidates. Maximal degree in co-relation 31632. Up to 2447 conditions per place. [2022-10-17 10:11:19,267 INFO L137 encePairwiseOnDemand]: 82/103 looper letters, 452 selfloop transitions, 128 changer transitions 107/773 dead transitions. [2022-10-17 10:11:19,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 773 transitions, 7965 flow [2022-10-17 10:11:19,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:11:19,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:11:19,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 952 transitions. [2022-10-17 10:11:19,271 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7109783420463032 [2022-10-17 10:11:19,271 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 952 transitions. [2022-10-17 10:11:19,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 952 transitions. [2022-10-17 10:11:19,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:11:19,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 952 transitions. [2022-10-17 10:11:19,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 73.23076923076923) internal successors, (952), 13 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:19,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 103.0) internal successors, (1442), 14 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:19,279 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 103.0) internal successors, (1442), 14 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:19,279 INFO L175 Difference]: Start difference. First operand has 213 places, 331 transitions, 2783 flow. Second operand 13 states and 952 transitions. [2022-10-17 10:11:19,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 773 transitions, 7965 flow [2022-10-17 10:11:19,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 773 transitions, 7875 flow, removed 39 selfloop flow, removed 6 redundant places. [2022-10-17 10:11:19,510 INFO L231 Difference]: Finished difference. Result has 223 places, 414 transitions, 4395 flow [2022-10-17 10:11:19,511 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=2758, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4395, PETRI_PLACES=223, PETRI_TRANSITIONS=414} [2022-10-17 10:11:19,511 INFO L287 CegarLoopForPetriNet]: 102 programPoint places, 121 predicate places. [2022-10-17 10:11:19,511 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 414 transitions, 4395 flow [2022-10-17 10:11:19,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 58.7) internal successors, (587), 10 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:19,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:11:19,512 INFO L208 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, 1, 1, 1, 1, 1] [2022-10-17 10:11:19,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-17 10:11:19,513 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:11:19,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:19,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1298137290, now seen corresponding path program 3 times [2022-10-17 10:11:19,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:19,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817320042] [2022-10-17 10:11:19,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:19,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:19,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:20,497 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-10-17 10:11:20,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:20,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817320042] [2022-10-17 10:11:20,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817320042] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:11:20,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:11:20,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 10:11:20,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479286998] [2022-10-17 10:11:20,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:11:20,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 10:11:20,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:20,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 10:11:20,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:11:20,501 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 103 [2022-10-17 10:11:20,502 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 414 transitions, 4395 flow. Second operand has 10 states, 10 states have (on average 58.7) internal successors, (587), 10 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:20,502 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:11:20,502 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 103 [2022-10-17 10:11:20,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:11:23,631 INFO L130 PetriNetUnfolder]: 2687/8242 cut-off events. [2022-10-17 10:11:23,632 INFO L131 PetriNetUnfolder]: For 35766/35848 co-relation queries the response was YES. [2022-10-17 10:11:23,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34007 conditions, 8242 events. 2687/8242 cut-off events. For 35766/35848 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 83871 event pairs, 531 based on Foata normal form. 92/8318 useless extension candidates. Maximal degree in co-relation 33952. Up to 2213 conditions per place. [2022-10-17 10:11:23,716 INFO L137 encePairwiseOnDemand]: 83/103 looper letters, 396 selfloop transitions, 178 changer transitions 69/729 dead transitions. [2022-10-17 10:11:23,716 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 729 transitions, 8239 flow [2022-10-17 10:11:23,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 10:11:23,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-10-17 10:11:23,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 816 transitions. [2022-10-17 10:11:23,719 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7202118270079435 [2022-10-17 10:11:23,719 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 816 transitions. [2022-10-17 10:11:23,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 816 transitions. [2022-10-17 10:11:23,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:11:23,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 816 transitions. [2022-10-17 10:11:23,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 74.18181818181819) internal successors, (816), 11 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:23,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 103.0) internal successors, (1236), 12 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:23,725 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 103.0) internal successors, (1236), 12 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:23,725 INFO L175 Difference]: Start difference. First operand has 223 places, 414 transitions, 4395 flow. Second operand 11 states and 816 transitions. [2022-10-17 10:11:23,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 729 transitions, 8239 flow [2022-10-17 10:11:24,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 729 transitions, 8221 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-10-17 10:11:24,100 INFO L231 Difference]: Finished difference. Result has 238 places, 453 transitions, 5515 flow [2022-10-17 10:11:24,101 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=4377, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5515, PETRI_PLACES=238, PETRI_TRANSITIONS=453} [2022-10-17 10:11:24,102 INFO L287 CegarLoopForPetriNet]: 102 programPoint places, 136 predicate places. [2022-10-17 10:11:24,102 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 453 transitions, 5515 flow [2022-10-17 10:11:24,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 58.7) internal successors, (587), 10 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:24,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:11:24,103 INFO L208 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, 1, 1, 1, 1, 1] [2022-10-17 10:11:24,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-10-17 10:11:24,103 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:11:24,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:24,104 INFO L85 PathProgramCache]: Analyzing trace with hash 365125482, now seen corresponding path program 4 times [2022-10-17 10:11:24,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:24,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496299602] [2022-10-17 10:11:24,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:24,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:24,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:25,032 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-10-17 10:11:25,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:25,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496299602] [2022-10-17 10:11:25,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496299602] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:11:25,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:11:25,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 10:11:25,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975109577] [2022-10-17 10:11:25,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:11:25,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 10:11:25,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:25,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 10:11:25,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:11:25,036 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 103 [2022-10-17 10:11:25,038 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 453 transitions, 5515 flow. Second operand has 10 states, 10 states have (on average 58.7) internal successors, (587), 10 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:25,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:11:25,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 103 [2022-10-17 10:11:25,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:11:28,876 INFO L130 PetriNetUnfolder]: 2893/8736 cut-off events. [2022-10-17 10:11:28,877 INFO L131 PetriNetUnfolder]: For 56792/56885 co-relation queries the response was YES. [2022-10-17 10:11:28,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40273 conditions, 8736 events. 2893/8736 cut-off events. For 56792/56885 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 89252 event pairs, 618 based on Foata normal form. 118/8837 useless extension candidates. Maximal degree in co-relation 40210. Up to 2198 conditions per place. [2022-10-17 10:11:28,994 INFO L137 encePairwiseOnDemand]: 84/103 looper letters, 635 selfloop transitions, 112 changer transitions 73/906 dead transitions. [2022-10-17 10:11:28,994 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 906 transitions, 11199 flow [2022-10-17 10:11:28,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 10:11:28,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-10-17 10:11:28,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 913 transitions. [2022-10-17 10:11:28,997 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.738673139158576 [2022-10-17 10:11:28,998 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 913 transitions. [2022-10-17 10:11:28,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 913 transitions. [2022-10-17 10:11:28,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:11:28,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 913 transitions. [2022-10-17 10:11:29,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 76.08333333333333) internal successors, (913), 12 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:29,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 103.0) internal successors, (1339), 13 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:29,005 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 103.0) internal successors, (1339), 13 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:29,005 INFO L175 Difference]: Start difference. First operand has 238 places, 453 transitions, 5515 flow. Second operand 12 states and 913 transitions. [2022-10-17 10:11:29,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 906 transitions, 11199 flow