./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_16-arrayloop_rc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ba5aab-bdda-4267-b6b4-2523865fe6f4/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ba5aab-bdda-4267-b6b4-2523865fe6f4/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ba5aab-bdda-4267-b6b4-2523865fe6f4/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ba5aab-bdda-4267-b6b4-2523865fe6f4/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_16-arrayloop_rc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ba5aab-bdda-4267-b6b4-2523865fe6f4/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ba5aab-bdda-4267-b6b4-2523865fe6f4/bin/uautomizer-verify-WvqO1wxjHP --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 5810bf8f90e8e4e20451fbc06dd5039f754e5765485d12699b814c2e1d4badb7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:02:37,357 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:02:37,434 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ba5aab-bdda-4267-b6b4-2523865fe6f4/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-06 23:02:37,439 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:02:37,439 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:02:37,468 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:02:37,469 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:02:37,470 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:02:37,470 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:02:37,471 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:02:37,472 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:02:37,473 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:02:37,473 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:02:37,474 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:02:37,475 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:02:37,475 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:02:37,476 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:02:37,477 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:02:37,477 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:02:37,478 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:02:37,478 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:02:37,479 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:02:37,480 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-06 23:02:37,480 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 23:02:37,481 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:02:37,481 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:02:37,481 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:02:37,482 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:02:37,482 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:02:37,483 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:02:37,483 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:02:37,484 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:02:37,484 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:02:37,485 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:02:37,485 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:02:37,486 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:02:37,486 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:02:37,487 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:02:37,487 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:02:37,487 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:02:37,488 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:02:37,488 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ba5aab-bdda-4267-b6b4-2523865fe6f4/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ba5aab-bdda-4267-b6b4-2523865fe6f4/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5810bf8f90e8e4e20451fbc06dd5039f754e5765485d12699b814c2e1d4badb7 [2023-11-06 23:02:37,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:02:37,799 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:02:37,802 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:02:37,803 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:02:37,804 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:02:37,806 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ba5aab-bdda-4267-b6b4-2523865fe6f4/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/goblint-regression/09-regions_16-arrayloop_rc.i [2023-11-06 23:02:40,985 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:02:41,314 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:02:41,315 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ba5aab-bdda-4267-b6b4-2523865fe6f4/sv-benchmarks/c/goblint-regression/09-regions_16-arrayloop_rc.i [2023-11-06 23:02:41,341 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ba5aab-bdda-4267-b6b4-2523865fe6f4/bin/uautomizer-verify-WvqO1wxjHP/data/47f61f0b6/0fd65d80f0714305ba8c32c66fbaf4bf/FLAG79d390645 [2023-11-06 23:02:41,357 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ba5aab-bdda-4267-b6b4-2523865fe6f4/bin/uautomizer-verify-WvqO1wxjHP/data/47f61f0b6/0fd65d80f0714305ba8c32c66fbaf4bf [2023-11-06 23:02:41,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:02:41,362 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:02:41,363 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:02:41,364 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:02:41,369 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:02:41,370 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:02:41" (1/1) ... [2023-11-06 23:02:41,372 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73cd66ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:41, skipping insertion in model container [2023-11-06 23:02:41,372 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:02:41" (1/1) ... [2023-11-06 23:02:41,447 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:02:42,213 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:02:42,230 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:02:42,288 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:02:42,426 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:02:42,427 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:42 WrapperNode [2023-11-06 23:02:42,427 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:02:42,429 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:02:42,429 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:02:42,429 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:02:42,437 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:42" (1/1) ... [2023-11-06 23:02:42,474 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:42" (1/1) ... [2023-11-06 23:02:42,526 INFO L138 Inliner]: procedures = 368, calls = 28, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 231 [2023-11-06 23:02:42,528 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:02:42,529 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:02:42,529 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:02:42,529 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:02:42,539 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:42" (1/1) ... [2023-11-06 23:02:42,539 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:42" (1/1) ... [2023-11-06 23:02:42,554 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:42" (1/1) ... [2023-11-06 23:02:42,563 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:42" (1/1) ... [2023-11-06 23:02:42,603 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:42" (1/1) ... [2023-11-06 23:02:42,614 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:42" (1/1) ... [2023-11-06 23:02:42,617 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:42" (1/1) ... [2023-11-06 23:02:42,630 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:42" (1/1) ... [2023-11-06 23:02:42,636 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:02:42,637 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:02:42,637 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:02:42,637 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:02:42,638 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:42" (1/1) ... [2023-11-06 23:02:42,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:02:42,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ba5aab-bdda-4267-b6b4-2523865fe6f4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:02:42,668 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ba5aab-bdda-4267-b6b4-2523865fe6f4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:02:42,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ba5aab-bdda-4267-b6b4-2523865fe6f4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:02:42,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:02:42,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 23:02:42,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:02:42,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 23:02:42,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 23:02:42,713 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 23:02:42,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 23:02:42,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:02:42,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 23:02:42,714 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-06 23:02:42,714 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-06 23:02:42,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:02:42,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:02:42,716 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 23:02:42,936 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:02:42,938 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:02:43,545 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:02:43,558 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:02:43,558 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-06 23:02:43,561 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:02:43 BoogieIcfgContainer [2023-11-06 23:02:43,561 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:02:43,564 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:02:43,570 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:02:43,573 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:02:43,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:02:41" (1/3) ... [2023-11-06 23:02:43,578 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@185283d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:02:43, skipping insertion in model container [2023-11-06 23:02:43,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:42" (2/3) ... [2023-11-06 23:02:43,579 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@185283d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:02:43, skipping insertion in model container [2023-11-06 23:02:43,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:02:43" (3/3) ... [2023-11-06 23:02:43,581 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_16-arrayloop_rc.i [2023-11-06 23:02:43,592 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 23:02:43,601 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:02:43,602 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-06 23:02:43,602 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 23:02:43,764 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 23:02:43,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 263 places, 265 transitions, 534 flow [2023-11-06 23:02:43,915 INFO L124 PetriNetUnfolderBase]: 6/264 cut-off events. [2023-11-06 23:02:43,915 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:02:43,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 264 events. 6/264 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 426 event pairs, 0 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 200. Up to 2 conditions per place. [2023-11-06 23:02:43,924 INFO L82 GeneralOperation]: Start removeDead. Operand has 263 places, 265 transitions, 534 flow [2023-11-06 23:02:43,933 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 262 places, 264 transitions, 531 flow [2023-11-06 23:02:43,937 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:02:43,947 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 262 places, 264 transitions, 531 flow [2023-11-06 23:02:43,950 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 262 places, 264 transitions, 531 flow [2023-11-06 23:02:43,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 262 places, 264 transitions, 531 flow [2023-11-06 23:02:44,020 INFO L124 PetriNetUnfolderBase]: 6/264 cut-off events. [2023-11-06 23:02:44,020 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:02:44,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 264 events. 6/264 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 426 event pairs, 0 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 200. Up to 2 conditions per place. [2023-11-06 23:02:44,039 INFO L119 LiptonReduction]: Number of co-enabled transitions 19550 [2023-11-06 23:03:12,871 WARN L293 SmtUtils]: Spent 8.65s on a formula simplification that was a NOOP. DAG size: 142 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 23:03:14,553 INFO L134 LiptonReduction]: Checked pairs total: 98205 [2023-11-06 23:03:14,554 INFO L136 LiptonReduction]: Total number of compositions: 158 [2023-11-06 23:03:14,595 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:03:14,602 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;@2c161b50, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:03:14,602 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-11-06 23:03:14,605 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:03:14,606 INFO L124 PetriNetUnfolderBase]: 1/3 cut-off events. [2023-11-06 23:03:14,606 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:03:14,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:03:14,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 23:03:14,607 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-06 23:03:14,615 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:14,615 INFO L85 PathProgramCache]: Analyzing trace with hash 26591, now seen corresponding path program 1 times [2023-11-06 23:03:14,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:14,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624913090] [2023-11-06 23:03:14,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:14,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:14,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:14,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:03:14,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:14,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624913090] [2023-11-06 23:03:14,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624913090] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:14,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:03:14,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:03:14,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887101527] [2023-11-06 23:03:14,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:14,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 23:03:14,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:14,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 23:03:14,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 23:03:14,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 423 [2023-11-06 23:03:14,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 122 transitions, 247 flow. Second operand has 2 states, 2 states have (on average 262.0) internal successors, (524), 2 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:14,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:03:14,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 423 [2023-11-06 23:03:14,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:03:15,522 INFO L124 PetriNetUnfolderBase]: 393/1743 cut-off events. [2023-11-06 23:03:15,523 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:03:15,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2534 conditions, 1743 events. 393/1743 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 11174 event pairs, 352 based on Foata normal form. 0/1656 useless extension candidates. Maximal degree in co-relation 2521. Up to 787 conditions per place. [2023-11-06 23:03:15,539 INFO L140 encePairwiseOnDemand]: 420/423 looper letters, 44 selfloop transitions, 0 changer transitions 0/119 dead transitions. [2023-11-06 23:03:15,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 119 transitions, 329 flow [2023-11-06 23:03:15,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 23:03:15,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 23:03:15,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 569 transitions. [2023-11-06 23:03:15,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6725768321513003 [2023-11-06 23:03:15,570 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 569 transitions. [2023-11-06 23:03:15,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 569 transitions. [2023-11-06 23:03:15,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:03:15,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 569 transitions. [2023-11-06 23:03:15,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 284.5) internal successors, (569), 2 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:15,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 423.0) internal successors, (1269), 3 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:15,592 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 423.0) internal successors, (1269), 3 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:15,594 INFO L175 Difference]: Start difference. First operand has 123 places, 122 transitions, 247 flow. Second operand 2 states and 569 transitions. [2023-11-06 23:03:15,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 119 transitions, 329 flow [2023-11-06 23:03:15,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 119 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:03:15,604 INFO L231 Difference]: Finished difference. Result has 120 places, 119 transitions, 240 flow [2023-11-06 23:03:15,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=240, PETRI_PLACES=120, PETRI_TRANSITIONS=119} [2023-11-06 23:03:15,612 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, -3 predicate places. [2023-11-06 23:03:15,613 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 119 transitions, 240 flow [2023-11-06 23:03:15,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 262.0) internal successors, (524), 2 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:15,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:03:15,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:03:15,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:03:15,614 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-06 23:03:15,615 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:15,615 INFO L85 PathProgramCache]: Analyzing trace with hash -504281898, now seen corresponding path program 1 times [2023-11-06 23:03:15,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:15,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10522631] [2023-11-06 23:03:15,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:15,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:15,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:15,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:03:15,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:15,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10522631] [2023-11-06 23:03:15,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10522631] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:15,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:03:15,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:03:15,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507640482] [2023-11-06 23:03:15,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:15,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:03:15,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:15,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:03:15,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:03:15,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 423 [2023-11-06 23:03:15,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 119 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:15,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:03:15,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 423 [2023-11-06 23:03:15,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:03:16,890 INFO L124 PetriNetUnfolderBase]: 750/3203 cut-off events. [2023-11-06 23:03:16,891 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:03:16,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4709 conditions, 3203 events. 750/3203 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 21485 event pairs, 540 based on Foata normal form. 0/3053 useless extension candidates. Maximal degree in co-relation 4706. Up to 787 conditions per place. [2023-11-06 23:03:16,917 INFO L140 encePairwiseOnDemand]: 417/423 looper letters, 79 selfloop transitions, 4 changer transitions 0/158 dead transitions. [2023-11-06 23:03:16,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 158 transitions, 484 flow [2023-11-06 23:03:16,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:03:16,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:03:16,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 841 transitions. [2023-11-06 23:03:16,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6627265563435776 [2023-11-06 23:03:16,925 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 841 transitions. [2023-11-06 23:03:16,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 841 transitions. [2023-11-06 23:03:16,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:03:16,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 841 transitions. [2023-11-06 23:03:16,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 280.3333333333333) internal successors, (841), 3 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) [2023-11-06 23:03:16,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 423.0) internal successors, (1692), 4 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:16,941 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 423.0) internal successors, (1692), 4 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:16,945 INFO L175 Difference]: Start difference. First operand has 120 places, 119 transitions, 240 flow. Second operand 3 states and 841 transitions. [2023-11-06 23:03:16,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 158 transitions, 484 flow [2023-11-06 23:03:16,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 158 transitions, 484 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 23:03:16,954 INFO L231 Difference]: Finished difference. Result has 123 places, 121 transitions, 264 flow [2023-11-06 23:03:16,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=264, PETRI_PLACES=123, PETRI_TRANSITIONS=121} [2023-11-06 23:03:16,957 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, 0 predicate places. [2023-11-06 23:03:16,958 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 121 transitions, 264 flow [2023-11-06 23:03:16,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:16,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:03:16,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:03:16,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 23:03:16,967 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-06 23:03:16,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:16,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1007286033, now seen corresponding path program 1 times [2023-11-06 23:03:16,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:16,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744841024] [2023-11-06 23:03:16,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:16,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:17,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:17,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:03:17,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:17,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744841024] [2023-11-06 23:03:17,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744841024] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:03:17,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814353086] [2023-11-06 23:03:17,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:17,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:03:17,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ba5aab-bdda-4267-b6b4-2523865fe6f4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:17,196 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ba5aab-bdda-4267-b6b4-2523865fe6f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:03:17,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ba5aab-bdda-4267-b6b4-2523865fe6f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 23:03:17,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:17,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:03:17,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:03:17,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:03:17,414 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:03:17,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:03:17,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814353086] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:03:17,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:03:17,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-06 23:03:17,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375936487] [2023-11-06 23:03:17,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:03:17,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:03:17,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:17,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:03:17,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:03:17,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 423 [2023-11-06 23:03:17,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 121 transitions, 264 flow. Second operand has 7 states, 7 states have (on average 252.0) internal successors, (1764), 7 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:17,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:03:17,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 423 [2023-11-06 23:03:17,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:03:19,882 INFO L124 PetriNetUnfolderBase]: 1481/6198 cut-off events. [2023-11-06 23:03:19,882 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2023-11-06 23:03:19,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9298 conditions, 6198 events. 1481/6198 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 42616 event pairs, 240 based on Foata normal form. 51/6057 useless extension candidates. Maximal degree in co-relation 9293. Up to 732 conditions per place. [2023-11-06 23:03:19,929 INFO L140 encePairwiseOnDemand]: 416/423 looper letters, 169 selfloop transitions, 11 changer transitions 0/255 dead transitions. [2023-11-06 23:03:19,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 255 transitions, 902 flow [2023-11-06 23:03:19,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:03:19,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:03:19,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1686 transitions. [2023-11-06 23:03:19,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6643026004728132 [2023-11-06 23:03:19,936 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1686 transitions. [2023-11-06 23:03:19,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1686 transitions. [2023-11-06 23:03:19,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:03:19,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1686 transitions. [2023-11-06 23:03:19,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:19,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 423.0) internal successors, (2961), 7 states have internal predecessors, (2961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:19,953 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 423.0) internal successors, (2961), 7 states have internal predecessors, (2961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:19,953 INFO L175 Difference]: Start difference. First operand has 123 places, 121 transitions, 264 flow. Second operand 6 states and 1686 transitions. [2023-11-06 23:03:19,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 255 transitions, 902 flow [2023-11-06 23:03:19,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 255 transitions, 898 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:03:19,960 INFO L231 Difference]: Finished difference. Result has 131 places, 127 transitions, 338 flow [2023-11-06 23:03:19,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=338, PETRI_PLACES=131, PETRI_TRANSITIONS=127} [2023-11-06 23:03:19,961 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, 8 predicate places. [2023-11-06 23:03:19,962 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 127 transitions, 338 flow [2023-11-06 23:03:19,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 252.0) internal successors, (1764), 7 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:19,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:03:19,964 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:03:19,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ba5aab-bdda-4267-b6b4-2523865fe6f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 23:03:20,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ba5aab-bdda-4267-b6b4-2523865fe6f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:03:20,170 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-06 23:03:20,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:20,171 INFO L85 PathProgramCache]: Analyzing trace with hash 225071544, now seen corresponding path program 1 times [2023-11-06 23:03:20,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:20,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131656430] [2023-11-06 23:03:20,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:20,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:20,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:20,519 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:03:20,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:20,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131656430] [2023-11-06 23:03:20,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131656430] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:03:20,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682241774] [2023-11-06 23:03:20,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:20,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:03:20,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ba5aab-bdda-4267-b6b4-2523865fe6f4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:20,521 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ba5aab-bdda-4267-b6b4-2523865fe6f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:03:20,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ba5aab-bdda-4267-b6b4-2523865fe6f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 23:03:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:20,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 23:03:20,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:03:20,838 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:03:20,838 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:03:20,930 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:03:20,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682241774] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:03:20,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:03:20,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-06 23:03:20,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219566735] [2023-11-06 23:03:20,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:03:20,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 23:03:20,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:20,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 23:03:20,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-06 23:03:21,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 423 [2023-11-06 23:03:21,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 127 transitions, 338 flow. Second operand has 13 states, 13 states have (on average 251.46153846153845) internal successors, (3269), 13 states have internal predecessors, (3269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:21,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:03:21,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 423 [2023-11-06 23:03:21,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:03:27,999 INFO L124 PetriNetUnfolderBase]: 3623/15078 cut-off events. [2023-11-06 23:03:27,999 INFO L125 PetriNetUnfolderBase]: For 876/876 co-relation queries the response was YES. [2023-11-06 23:03:28,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23294 conditions, 15078 events. 3623/15078 cut-off events. For 876/876 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 105451 event pairs, 240 based on Foata normal form. 108/14767 useless extension candidates. Maximal degree in co-relation 23286. Up to 732 conditions per place. [2023-11-06 23:03:28,096 INFO L140 encePairwiseOnDemand]: 416/423 looper letters, 391 selfloop transitions, 23 changer transitions 0/489 dead transitions. [2023-11-06 23:03:28,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 489 transitions, 1980 flow [2023-11-06 23:03:28,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 23:03:28,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 23:03:28,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3426 transitions. [2023-11-06 23:03:28,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6749408983451537 [2023-11-06 23:03:28,109 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3426 transitions. [2023-11-06 23:03:28,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3426 transitions. [2023-11-06 23:03:28,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:03:28,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3426 transitions. [2023-11-06 23:03:28,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 285.5) internal successors, (3426), 12 states have internal predecessors, (3426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:28,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 423.0) internal successors, (5499), 13 states have internal predecessors, (5499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:28,222 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 423.0) internal successors, (5499), 13 states have internal predecessors, (5499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:28,223 INFO L175 Difference]: Start difference. First operand has 131 places, 127 transitions, 338 flow. Second operand 12 states and 3426 transitions. [2023-11-06 23:03:28,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 489 transitions, 1980 flow [2023-11-06 23:03:28,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 489 transitions, 1952 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-11-06 23:03:28,248 INFO L231 Difference]: Finished difference. Result has 148 places, 140 transitions, 504 flow [2023-11-06 23:03:28,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=504, PETRI_PLACES=148, PETRI_TRANSITIONS=140} [2023-11-06 23:03:28,251 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, 25 predicate places. [2023-11-06 23:03:28,252 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 140 transitions, 504 flow [2023-11-06 23:03:28,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 251.46153846153845) internal successors, (3269), 13 states have internal predecessors, (3269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:28,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:03:28,254 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:03:28,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ba5aab-bdda-4267-b6b4-2523865fe6f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 23:03:28,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ba5aab-bdda-4267-b6b4-2523865fe6f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:03:28,462 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-06 23:03:28,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:28,463 INFO L85 PathProgramCache]: Analyzing trace with hash -265154600, now seen corresponding path program 2 times [2023-11-06 23:03:28,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:28,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603721922] [2023-11-06 23:03:28,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:28,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:30,419 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 23:03:30,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:30,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603721922] [2023-11-06 23:03:30,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603721922] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:30,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:03:30,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 23:03:30,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758072891] [2023-11-06 23:03:30,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:30,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:03:30,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:30,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:03:30,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:03:31,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 423 [2023-11-06 23:03:31,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 140 transitions, 504 flow. Second operand has 6 states, 6 states have (on average 188.16666666666666) internal successors, (1129), 6 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:31,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:03:31,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 423 [2023-11-06 23:03:31,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:03:47,201 INFO L124 PetriNetUnfolderBase]: 21697/47852 cut-off events. [2023-11-06 23:03:47,201 INFO L125 PetriNetUnfolderBase]: For 3882/3882 co-relation queries the response was YES. [2023-11-06 23:03:47,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94341 conditions, 47852 events. 21697/47852 cut-off events. For 3882/3882 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 310947 event pairs, 16798 based on Foata normal form. 0/46373 useless extension candidates. Maximal degree in co-relation 94326. Up to 40501 conditions per place. [2023-11-06 23:03:47,493 INFO L140 encePairwiseOnDemand]: 381/423 looper letters, 240 selfloop transitions, 149 changer transitions 0/412 dead transitions. [2023-11-06 23:03:47,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 412 transitions, 2290 flow [2023-11-06 23:03:47,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:03:47,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:03:47,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1441 transitions. [2023-11-06 23:03:47,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5677698975571316 [2023-11-06 23:03:47,500 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1441 transitions. [2023-11-06 23:03:47,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1441 transitions. [2023-11-06 23:03:47,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:03:47,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1441 transitions. [2023-11-06 23:03:47,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 240.16666666666666) internal successors, (1441), 6 states have internal predecessors, (1441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:47,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 423.0) internal successors, (2961), 7 states have internal predecessors, (2961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:47,511 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 423.0) internal successors, (2961), 7 states have internal predecessors, (2961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:47,511 INFO L175 Difference]: Start difference. First operand has 148 places, 140 transitions, 504 flow. Second operand 6 states and 1441 transitions. [2023-11-06 23:03:47,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 412 transitions, 2290 flow [2023-11-06 23:03:47,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 412 transitions, 2240 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-11-06 23:03:47,536 INFO L231 Difference]: Finished difference. Result has 154 places, 288 transitions, 1306 flow [2023-11-06 23:03:47,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1306, PETRI_PLACES=154, PETRI_TRANSITIONS=288} [2023-11-06 23:03:47,539 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, 31 predicate places. [2023-11-06 23:03:47,539 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 288 transitions, 1306 flow [2023-11-06 23:03:47,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 188.16666666666666) internal successors, (1129), 6 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:47,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:03:47,540 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:03:47,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 23:03:47,541 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-06 23:03:47,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:47,541 INFO L85 PathProgramCache]: Analyzing trace with hash -563005002, now seen corresponding path program 2 times [2023-11-06 23:03:47,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:47,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627313419] [2023-11-06 23:03:47,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:47,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:48,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:48,943 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 23:03:48,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:48,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627313419] [2023-11-06 23:03:48,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627313419] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:48,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:03:48,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 23:03:48,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448452960] [2023-11-06 23:03:48,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:48,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:03:48,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:48,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:03:48,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:03:49,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 423 [2023-11-06 23:03:49,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 288 transitions, 1306 flow. Second operand has 6 states, 6 states have (on average 185.16666666666666) internal successors, (1111), 6 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:49,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:03:49,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 423 [2023-11-06 23:03:49,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:04:09,143 INFO L124 PetriNetUnfolderBase]: 23757/53681 cut-off events. [2023-11-06 23:04:09,143 INFO L125 PetriNetUnfolderBase]: For 10340/10878 co-relation queries the response was YES. [2023-11-06 23:04:09,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129403 conditions, 53681 events. 23757/53681 cut-off events. For 10340/10878 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 352540 event pairs, 16642 based on Foata normal form. 0/52238 useless extension candidates. Maximal degree in co-relation 129383. Up to 45113 conditions per place. [2023-11-06 23:04:09,576 INFO L140 encePairwiseOnDemand]: 393/423 looper letters, 304 selfloop transitions, 105 changer transitions 0/448 dead transitions. [2023-11-06 23:04:09,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 448 transitions, 2494 flow [2023-11-06 23:04:09,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:04:09,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:04:09,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1355 transitions. [2023-11-06 23:04:09,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338849487785658 [2023-11-06 23:04:09,585 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1355 transitions. [2023-11-06 23:04:09,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1355 transitions. [2023-11-06 23:04:09,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:04:09,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1355 transitions. [2023-11-06 23:04:09,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 225.83333333333334) internal successors, (1355), 6 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:09,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 423.0) internal successors, (2961), 7 states have internal predecessors, (2961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:09,599 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 423.0) internal successors, (2961), 7 states have internal predecessors, (2961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:09,599 INFO L175 Difference]: Start difference. First operand has 154 places, 288 transitions, 1306 flow. Second operand 6 states and 1355 transitions. [2023-11-06 23:04:09,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 448 transitions, 2494 flow [2023-11-06 23:04:09,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 448 transitions, 2494 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 23:04:09,820 INFO L231 Difference]: Finished difference. Result has 163 places, 388 transitions, 1924 flow [2023-11-06 23:04:09,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=1306, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1924, PETRI_PLACES=163, PETRI_TRANSITIONS=388} [2023-11-06 23:04:09,824 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, 40 predicate places. [2023-11-06 23:04:09,824 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 388 transitions, 1924 flow [2023-11-06 23:04:09,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 185.16666666666666) internal successors, (1111), 6 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:09,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:04:09,825 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:04:09,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 23:04:09,826 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-06 23:04:09,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:04:09,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1906269861, now seen corresponding path program 1 times [2023-11-06 23:04:09,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:04:09,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419218317] [2023-11-06 23:04:09,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:09,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:04:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:04:11,854 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 23:04:11,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:04:11,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419218317] [2023-11-06 23:04:11,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419218317] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:04:11,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:04:11,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 23:04:11,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68161405] [2023-11-06 23:04:11,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:04:11,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 23:04:11,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:04:11,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 23:04:11,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:04:13,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 423 [2023-11-06 23:04:13,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 388 transitions, 1924 flow. Second operand has 9 states, 9 states have (on average 181.0) internal successors, (1629), 9 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:13,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:04:13,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 423 [2023-11-06 23:04:13,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand