./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/25_stack_longer-1-race.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_8d0f4964-c439-4818-b095-461c53dab63b/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0f4964-c439-4818-b095-461c53dab63b/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_8d0f4964-c439-4818-b095-461c53dab63b/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0f4964-c439-4818-b095-461c53dab63b/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/25_stack_longer-1-race.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0f4964-c439-4818-b095-461c53dab63b/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_8d0f4964-c439-4818-b095-461c53dab63b/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 71de1c8da7c81d1cb6f2035741a17645b8c79e199c0fda7e542c1cb232593d6b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:18:25,311 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:18:25,385 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0f4964-c439-4818-b095-461c53dab63b/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-06 22:18:25,391 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:18:25,392 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:18:25,424 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:18:25,425 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:18:25,426 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:18:25,427 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:18:25,427 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:18:25,428 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:18:25,429 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:18:25,429 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:18:25,430 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:18:25,431 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:18:25,431 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:18:25,432 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:18:25,432 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:18:25,433 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:18:25,434 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:18:25,434 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:18:25,435 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:18:25,436 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-06 22:18:25,436 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:18:25,437 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:18:25,437 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:18:25,438 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:18:25,439 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:18:25,439 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:18:25,440 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:18:25,440 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:18:25,441 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:18:25,441 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:18:25,442 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:18:25,442 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:18:25,443 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:18:25,443 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:18:25,444 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:18:25,444 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:18:25,444 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:18:25,444 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:18:25,445 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_8d0f4964-c439-4818-b095-461c53dab63b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0f4964-c439-4818-b095-461c53dab63b/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71de1c8da7c81d1cb6f2035741a17645b8c79e199c0fda7e542c1cb232593d6b [2023-11-06 22:18:25,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:18:25,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:18:25,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:18:25,811 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:18:25,812 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:18:25,813 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0f4964-c439-4818-b095-461c53dab63b/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-ext/25_stack_longer-1-race.i [2023-11-06 22:18:29,158 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:18:29,561 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:18:29,565 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0f4964-c439-4818-b095-461c53dab63b/sv-benchmarks/c/pthread-ext/25_stack_longer-1-race.i [2023-11-06 22:18:29,600 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0f4964-c439-4818-b095-461c53dab63b/bin/uautomizer-verify-WvqO1wxjHP/data/9916c7b95/9168f709b18d4b88ac97d6cd4b377bf1/FLAGf36e41e6c [2023-11-06 22:18:29,625 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0f4964-c439-4818-b095-461c53dab63b/bin/uautomizer-verify-WvqO1wxjHP/data/9916c7b95/9168f709b18d4b88ac97d6cd4b377bf1 [2023-11-06 22:18:29,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:18:29,634 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:18:29,638 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:18:29,638 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:18:29,644 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:18:29,647 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:18:29" (1/1) ... [2023-11-06 22:18:29,648 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6659d538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:29, skipping insertion in model container [2023-11-06 22:18:29,648 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:18:29" (1/1) ... [2023-11-06 22:18:29,714 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:18:30,198 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:18:30,213 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:18:30,289 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:18:30,341 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:18:30,341 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:30 WrapperNode [2023-11-06 22:18:30,341 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:18:30,343 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:18:30,343 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:18:30,343 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:18:30,351 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:30" (1/1) ... [2023-11-06 22:18:30,389 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:30" (1/1) ... [2023-11-06 22:18:30,440 INFO L138 Inliner]: procedures = 177, calls = 35, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 295 [2023-11-06 22:18:30,441 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:18:30,442 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:18:30,442 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:18:30,442 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:18:30,453 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:30" (1/1) ... [2023-11-06 22:18:30,453 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:30" (1/1) ... [2023-11-06 22:18:30,470 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:30" (1/1) ... [2023-11-06 22:18:30,470 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:30" (1/1) ... [2023-11-06 22:18:30,514 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:30" (1/1) ... [2023-11-06 22:18:30,519 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:30" (1/1) ... [2023-11-06 22:18:30,522 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:30" (1/1) ... [2023-11-06 22:18:30,524 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:30" (1/1) ... [2023-11-06 22:18:30,529 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:18:30,530 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:18:30,530 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:18:30,530 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:18:30,531 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:30" (1/1) ... [2023-11-06 22:18:30,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:18:30,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0f4964-c439-4818-b095-461c53dab63b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:30,567 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0f4964-c439-4818-b095-461c53dab63b/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:18:30,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d0f4964-c439-4818-b095-461c53dab63b/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:18:30,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:18:30,621 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-06 22:18:30,621 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-06 22:18:30,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:18:30,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:18:30,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:18:30,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:18:30,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:18:30,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:18:30,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:18:30,624 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 22:18:30,820 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:18:30,823 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:18:31,445 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:18:31,861 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:18:31,862 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 22:18:31,865 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:18:31 BoogieIcfgContainer [2023-11-06 22:18:31,866 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:18:31,869 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:18:31,870 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:18:31,873 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:18:31,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:18:29" (1/3) ... [2023-11-06 22:18:31,875 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3376b627 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:18:31, skipping insertion in model container [2023-11-06 22:18:31,875 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:30" (2/3) ... [2023-11-06 22:18:31,877 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3376b627 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:18:31, skipping insertion in model container [2023-11-06 22:18:31,878 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:18:31" (3/3) ... [2023-11-06 22:18:31,879 INFO L112 eAbstractionObserver]: Analyzing ICFG 25_stack_longer-1-race.i [2023-11-06 22:18:31,888 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:18:31,899 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:18:31,899 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-11-06 22:18:31,900 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:18:32,033 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:18:32,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 156 places, 160 transitions, 324 flow [2023-11-06 22:18:32,200 INFO L124 PetriNetUnfolderBase]: 8/171 cut-off events. [2023-11-06 22:18:32,202 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:18:32,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 171 events. 8/171 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 235 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 139. Up to 4 conditions per place. [2023-11-06 22:18:32,211 INFO L82 GeneralOperation]: Start removeDead. Operand has 156 places, 160 transitions, 324 flow [2023-11-06 22:18:32,222 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 156 places, 160 transitions, 324 flow [2023-11-06 22:18:32,226 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:18:32,243 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 160 transitions, 324 flow [2023-11-06 22:18:32,246 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 156 places, 160 transitions, 324 flow [2023-11-06 22:18:32,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 156 places, 160 transitions, 324 flow [2023-11-06 22:18:32,316 INFO L124 PetriNetUnfolderBase]: 8/171 cut-off events. [2023-11-06 22:18:32,316 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:18:32,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 171 events. 8/171 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 235 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 139. Up to 4 conditions per place. [2023-11-06 22:18:32,327 INFO L119 LiptonReduction]: Number of co-enabled transitions 3528 [2023-11-06 22:18:41,189 INFO L134 LiptonReduction]: Checked pairs total: 4199 [2023-11-06 22:18:41,190 INFO L136 LiptonReduction]: Total number of compositions: 206 [2023-11-06 22:18:41,206 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:18:41,213 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;@7a616321, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:18:41,213 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2023-11-06 22:18:41,216 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:18:41,216 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-06 22:18:41,217 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:18:41,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:41,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:18:41,218 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2023-11-06 22:18:41,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:41,223 INFO L85 PathProgramCache]: Analyzing trace with hash 36989892, now seen corresponding path program 1 times [2023-11-06 22:18:41,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:41,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087270465] [2023-11-06 22:18:41,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:41,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:41,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:41,462 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 22:18:41,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:41,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087270465] [2023-11-06 22:18:41,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087270465] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:41,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:41,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:18:41,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824525880] [2023-11-06 22:18:41,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:41,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:18:41,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:41,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:18:41,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:18:41,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 366 [2023-11-06 22:18:41,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 88 flow. Second operand has 2 states, 2 states have (on average 134.0) internal successors, (268), 2 states have internal predecessors, (268), 0 states have call successors, (0), 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 22:18:41,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:41,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 366 [2023-11-06 22:18:41,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:41,625 INFO L124 PetriNetUnfolderBase]: 20/47 cut-off events. [2023-11-06 22:18:41,625 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:18:41,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 47 events. 20/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 90 event pairs, 14 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 86. Up to 47 conditions per place. [2023-11-06 22:18:41,627 INFO L140 encePairwiseOnDemand]: 338/366 looper letters, 13 selfloop transitions, 0 changer transitions 0/14 dead transitions. [2023-11-06 22:18:41,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 14 transitions, 58 flow [2023-11-06 22:18:41,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:18:41,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:18:41,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 305 transitions. [2023-11-06 22:18:41,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2023-11-06 22:18:41,654 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 305 transitions. [2023-11-06 22:18:41,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 305 transitions. [2023-11-06 22:18:41,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:41,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 305 transitions. [2023-11-06 22:18:41,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 152.5) internal successors, (305), 2 states have internal predecessors, (305), 0 states have call successors, (0), 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 22:18:41,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 366.0) internal successors, (1098), 3 states have internal predecessors, (1098), 0 states have call successors, (0), 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 22:18:41,676 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 366.0) internal successors, (1098), 3 states have internal predecessors, (1098), 0 states have call successors, (0), 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 22:18:41,679 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 88 flow. Second operand 2 states and 305 transitions. [2023-11-06 22:18:41,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 14 transitions, 58 flow [2023-11-06 22:18:41,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 14 transitions, 58 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:18:41,684 INFO L231 Difference]: Finished difference. Result has 16 places, 14 transitions, 32 flow [2023-11-06 22:18:41,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=32, PETRI_PLACES=16, PETRI_TRANSITIONS=14} [2023-11-06 22:18:41,692 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -26 predicate places. [2023-11-06 22:18:41,693 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 14 transitions, 32 flow [2023-11-06 22:18:41,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 134.0) internal successors, (268), 2 states have internal predecessors, (268), 0 states have call successors, (0), 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 22:18:41,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:41,694 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-06 22:18:41,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:18:41,695 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2023-11-06 22:18:41,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:41,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1187636844, now seen corresponding path program 1 times [2023-11-06 22:18:41,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:41,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864222524] [2023-11-06 22:18:41,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:41,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:41,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:18:41,748 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:18:41,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:18:41,806 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:18:41,806 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:18:41,809 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (52 of 53 remaining) [2023-11-06 22:18:41,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (51 of 53 remaining) [2023-11-06 22:18:41,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (50 of 53 remaining) [2023-11-06 22:18:41,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (49 of 53 remaining) [2023-11-06 22:18:41,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (48 of 53 remaining) [2023-11-06 22:18:41,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (47 of 53 remaining) [2023-11-06 22:18:41,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (46 of 53 remaining) [2023-11-06 22:18:41,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (45 of 53 remaining) [2023-11-06 22:18:41,816 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (44 of 53 remaining) [2023-11-06 22:18:41,816 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (43 of 53 remaining) [2023-11-06 22:18:41,817 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (42 of 53 remaining) [2023-11-06 22:18:41,818 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (41 of 53 remaining) [2023-11-06 22:18:41,818 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (40 of 53 remaining) [2023-11-06 22:18:41,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (39 of 53 remaining) [2023-11-06 22:18:41,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (38 of 53 remaining) [2023-11-06 22:18:41,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (37 of 53 remaining) [2023-11-06 22:18:41,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (36 of 53 remaining) [2023-11-06 22:18:41,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (35 of 53 remaining) [2023-11-06 22:18:41,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (34 of 53 remaining) [2023-11-06 22:18:41,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (33 of 53 remaining) [2023-11-06 22:18:41,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONDATA_RACE (32 of 53 remaining) [2023-11-06 22:18:41,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONDATA_RACE (31 of 53 remaining) [2023-11-06 22:18:41,829 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONDATA_RACE (30 of 53 remaining) [2023-11-06 22:18:41,829 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONDATA_RACE (29 of 53 remaining) [2023-11-06 22:18:41,830 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONDATA_RACE (28 of 53 remaining) [2023-11-06 22:18:41,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONDATA_RACE (27 of 53 remaining) [2023-11-06 22:18:41,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONDATA_RACE (26 of 53 remaining) [2023-11-06 22:18:41,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (25 of 53 remaining) [2023-11-06 22:18:41,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (24 of 53 remaining) [2023-11-06 22:18:41,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (23 of 53 remaining) [2023-11-06 22:18:41,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (22 of 53 remaining) [2023-11-06 22:18:41,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (21 of 53 remaining) [2023-11-06 22:18:41,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 53 remaining) [2023-11-06 22:18:41,836 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (19 of 53 remaining) [2023-11-06 22:18:41,837 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (18 of 53 remaining) [2023-11-06 22:18:41,837 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (17 of 53 remaining) [2023-11-06 22:18:41,838 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (16 of 53 remaining) [2023-11-06 22:18:41,839 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (15 of 53 remaining) [2023-11-06 22:18:41,839 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (14 of 53 remaining) [2023-11-06 22:18:41,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (13 of 53 remaining) [2023-11-06 22:18:41,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (12 of 53 remaining) [2023-11-06 22:18:41,841 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (11 of 53 remaining) [2023-11-06 22:18:41,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (10 of 53 remaining) [2023-11-06 22:18:41,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (9 of 53 remaining) [2023-11-06 22:18:41,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (8 of 53 remaining) [2023-11-06 22:18:41,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (7 of 53 remaining) [2023-11-06 22:18:41,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONDATA_RACE (6 of 53 remaining) [2023-11-06 22:18:41,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONDATA_RACE (5 of 53 remaining) [2023-11-06 22:18:41,849 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONDATA_RACE (4 of 53 remaining) [2023-11-06 22:18:41,851 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONDATA_RACE (3 of 53 remaining) [2023-11-06 22:18:41,851 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONDATA_RACE (2 of 53 remaining) [2023-11-06 22:18:41,851 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONDATA_RACE (1 of 53 remaining) [2023-11-06 22:18:41,852 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONDATA_RACE (0 of 53 remaining) [2023-11-06 22:18:41,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:18:41,853 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-06 22:18:41,856 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:18:41,857 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-06 22:18:41,960 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:18:41,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 279 places, 287 transitions, 584 flow [2023-11-06 22:18:42,089 INFO L124 PetriNetUnfolderBase]: 15/311 cut-off events. [2023-11-06 22:18:42,091 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:18:42,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319 conditions, 311 events. 15/311 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 885 event pairs, 0 based on Foata normal form. 0/241 useless extension candidates. Maximal degree in co-relation 265. Up to 6 conditions per place. [2023-11-06 22:18:42,098 INFO L82 GeneralOperation]: Start removeDead. Operand has 279 places, 287 transitions, 584 flow [2023-11-06 22:18:42,107 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 279 places, 287 transitions, 584 flow [2023-11-06 22:18:42,107 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:18:42,107 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 279 places, 287 transitions, 584 flow [2023-11-06 22:18:42,108 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 279 places, 287 transitions, 584 flow [2023-11-06 22:18:42,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 279 places, 287 transitions, 584 flow [2023-11-06 22:18:42,189 INFO L124 PetriNetUnfolderBase]: 15/311 cut-off events. [2023-11-06 22:18:42,189 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:18:42,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319 conditions, 311 events. 15/311 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 885 event pairs, 0 based on Foata normal form. 0/241 useless extension candidates. Maximal degree in co-relation 265. Up to 6 conditions per place. [2023-11-06 22:18:42,258 INFO L119 LiptonReduction]: Number of co-enabled transitions 39060 [2023-11-06 22:18:49,190 INFO L134 LiptonReduction]: Checked pairs total: 143103 [2023-11-06 22:18:49,195 INFO L136 LiptonReduction]: Total number of compositions: 184 [2023-11-06 22:18:49,199 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:18:49,201 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;@7a616321, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:18:49,201 INFO L358 AbstractCegarLoop]: Starting to check reachability of 79 error locations. [2023-11-06 22:18:49,204 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:18:49,205 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-06 22:18:49,205 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:18:49,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:49,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:18:49,205 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 75 more)] === [2023-11-06 22:18:49,206 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:49,206 INFO L85 PathProgramCache]: Analyzing trace with hash 56163465, now seen corresponding path program 1 times [2023-11-06 22:18:49,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:49,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527675355] [2023-11-06 22:18:49,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:49,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:49,275 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 22:18:49,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:49,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527675355] [2023-11-06 22:18:49,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527675355] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:49,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:49,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:18:49,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988858853] [2023-11-06 22:18:49,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:49,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:18:49,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:49,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:18:49,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:18:49,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 471 [2023-11-06 22:18:49,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 153 transitions, 316 flow. Second operand has 2 states, 2 states have (on average 235.0) internal successors, (470), 2 states have internal predecessors, (470), 0 states have call successors, (0), 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 22:18:49,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:49,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 471 [2023-11-06 22:18:49,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:50,134 INFO L124 PetriNetUnfolderBase]: 1555/3914 cut-off events. [2023-11-06 22:18:50,135 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2023-11-06 22:18:50,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6422 conditions, 3914 events. 1555/3914 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 32081 event pairs, 1219 based on Foata normal form. 0/3249 useless extension candidates. Maximal degree in co-relation 3762. Up to 2440 conditions per place. [2023-11-06 22:18:50,180 INFO L140 encePairwiseOnDemand]: 438/471 looper letters, 51 selfloop transitions, 0 changer transitions 0/120 dead transitions. [2023-11-06 22:18:50,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 120 transitions, 352 flow [2023-11-06 22:18:50,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:18:50,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:18:50,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 550 transitions. [2023-11-06 22:18:50,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.583864118895966 [2023-11-06 22:18:50,185 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 550 transitions. [2023-11-06 22:18:50,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 550 transitions. [2023-11-06 22:18:50,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:50,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 550 transitions. [2023-11-06 22:18:50,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 275.0) internal successors, (550), 2 states have internal predecessors, (550), 0 states have call successors, (0), 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 22:18:50,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 471.0) internal successors, (1413), 3 states have internal predecessors, (1413), 0 states have call successors, (0), 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 22:18:50,196 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 471.0) internal successors, (1413), 3 states have internal predecessors, (1413), 0 states have call successors, (0), 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 22:18:50,197 INFO L175 Difference]: Start difference. First operand has 148 places, 153 transitions, 316 flow. Second operand 2 states and 550 transitions. [2023-11-06 22:18:50,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 120 transitions, 352 flow [2023-11-06 22:18:50,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 120 transitions, 352 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:18:50,204 INFO L231 Difference]: Finished difference. Result has 118 places, 120 transitions, 250 flow [2023-11-06 22:18:50,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=471, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=250, PETRI_PLACES=118, PETRI_TRANSITIONS=120} [2023-11-06 22:18:50,206 INFO L281 CegarLoopForPetriNet]: 148 programPoint places, -30 predicate places. [2023-11-06 22:18:50,206 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 120 transitions, 250 flow [2023-11-06 22:18:50,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 235.0) internal successors, (470), 2 states have internal predecessors, (470), 0 states have call successors, (0), 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 22:18:50,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:50,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:18:50,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:18:50,208 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 75 more)] === [2023-11-06 22:18:50,208 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:50,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1861435444, now seen corresponding path program 1 times [2023-11-06 22:18:50,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:50,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105108012] [2023-11-06 22:18:50,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:50,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:50,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:50,339 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 22:18:50,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:50,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105108012] [2023-11-06 22:18:50,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105108012] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:50,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:50,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:18:50,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729222130] [2023-11-06 22:18:50,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:50,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:50,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:50,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:50,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:50,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 471 [2023-11-06 22:18:50,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 120 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 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 22:18:50,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:50,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 471 [2023-11-06 22:18:50,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:51,943 INFO L124 PetriNetUnfolderBase]: 3827/9392 cut-off events. [2023-11-06 22:18:51,947 INFO L125 PetriNetUnfolderBase]: For 118/118 co-relation queries the response was YES. [2023-11-06 22:18:51,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15555 conditions, 9392 events. 3827/9392 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 88837 event pairs, 1480 based on Foata normal form. 0/7955 useless extension candidates. Maximal degree in co-relation 15550. Up to 3125 conditions per place. [2023-11-06 22:18:52,043 INFO L140 encePairwiseOnDemand]: 463/471 looper letters, 108 selfloop transitions, 6 changer transitions 0/175 dead transitions. [2023-11-06 22:18:52,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 175 transitions, 593 flow [2023-11-06 22:18:52,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:52,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:18:52,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 791 transitions. [2023-11-06 22:18:52,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5598018400566172 [2023-11-06 22:18:52,048 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 791 transitions. [2023-11-06 22:18:52,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 791 transitions. [2023-11-06 22:18:52,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:52,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 791 transitions. [2023-11-06 22:18:52,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.6666666666667) internal successors, (791), 3 states have internal predecessors, (791), 0 states have call successors, (0), 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 22:18:52,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 471.0) internal successors, (1884), 4 states have internal predecessors, (1884), 0 states have call successors, (0), 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 22:18:52,061 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 471.0) internal successors, (1884), 4 states have internal predecessors, (1884), 0 states have call successors, (0), 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 22:18:52,062 INFO L175 Difference]: Start difference. First operand has 118 places, 120 transitions, 250 flow. Second operand 3 states and 791 transitions. [2023-11-06 22:18:52,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 175 transitions, 593 flow [2023-11-06 22:18:52,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 175 transitions, 593 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:18:52,071 INFO L231 Difference]: Finished difference. Result has 122 places, 126 transitions, 302 flow [2023-11-06 22:18:52,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=471, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=302, PETRI_PLACES=122, PETRI_TRANSITIONS=126} [2023-11-06 22:18:52,075 INFO L281 CegarLoopForPetriNet]: 148 programPoint places, -26 predicate places. [2023-11-06 22:18:52,076 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 126 transitions, 302 flow [2023-11-06 22:18:52,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 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 22:18:52,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:52,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:52,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:18:52,077 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 75 more)] === [2023-11-06 22:18:52,078 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:52,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1123809608, now seen corresponding path program 1 times [2023-11-06 22:18:52,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:52,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604349912] [2023-11-06 22:18:52,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:52,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:52,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:52,163 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 22:18:52,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:52,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604349912] [2023-11-06 22:18:52,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604349912] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:52,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:52,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:18:52,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915428344] [2023-11-06 22:18:52,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:52,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:52,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:52,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:52,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:52,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 471 [2023-11-06 22:18:52,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 126 transitions, 302 flow. Second operand has 3 states, 3 states have (on average 223.33333333333334) internal successors, (670), 3 states have internal predecessors, (670), 0 states have call successors, (0), 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 22:18:52,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:52,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 471 [2023-11-06 22:18:52,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:53,787 INFO L124 PetriNetUnfolderBase]: 3939/9384 cut-off events. [2023-11-06 22:18:53,787 INFO L125 PetriNetUnfolderBase]: For 173/173 co-relation queries the response was YES. [2023-11-06 22:18:53,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15944 conditions, 9384 events. 3939/9384 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 87227 event pairs, 2855 based on Foata normal form. 0/7819 useless extension candidates. Maximal degree in co-relation 15937. Up to 6056 conditions per place. [2023-11-06 22:18:53,866 INFO L140 encePairwiseOnDemand]: 464/471 looper letters, 77 selfloop transitions, 6 changer transitions 0/154 dead transitions. [2023-11-06 22:18:53,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 154 transitions, 529 flow [2023-11-06 22:18:53,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:53,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:18:53,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 747 transitions. [2023-11-06 22:18:53,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5286624203821656 [2023-11-06 22:18:53,871 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 747 transitions. [2023-11-06 22:18:53,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 747 transitions. [2023-11-06 22:18:53,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:53,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 747 transitions. [2023-11-06 22:18:53,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 0 states have call successors, (0), 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 22:18:53,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 471.0) internal successors, (1884), 4 states have internal predecessors, (1884), 0 states have call successors, (0), 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 22:18:53,880 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 471.0) internal successors, (1884), 4 states have internal predecessors, (1884), 0 states have call successors, (0), 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 22:18:53,880 INFO L175 Difference]: Start difference. First operand has 122 places, 126 transitions, 302 flow. Second operand 3 states and 747 transitions. [2023-11-06 22:18:53,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 154 transitions, 529 flow [2023-11-06 22:18:53,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 154 transitions, 517 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:18:53,890 INFO L231 Difference]: Finished difference. Result has 123 places, 131 transitions, 330 flow [2023-11-06 22:18:53,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=471, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=330, PETRI_PLACES=123, PETRI_TRANSITIONS=131} [2023-11-06 22:18:53,893 INFO L281 CegarLoopForPetriNet]: 148 programPoint places, -25 predicate places. [2023-11-06 22:18:53,893 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 131 transitions, 330 flow [2023-11-06 22:18:53,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 223.33333333333334) internal successors, (670), 3 states have internal predecessors, (670), 0 states have call successors, (0), 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 22:18:53,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:53,894 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-06 22:18:53,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:18:53,895 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 75 more)] === [2023-11-06 22:18:53,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:53,895 INFO L85 PathProgramCache]: Analyzing trace with hash 576210008, now seen corresponding path program 1 times [2023-11-06 22:18:53,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:53,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579784506] [2023-11-06 22:18:53,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:53,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:18:53,926 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:18:53,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:18:53,942 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:18:53,942 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:18:53,942 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (78 of 79 remaining) [2023-11-06 22:18:53,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (77 of 79 remaining) [2023-11-06 22:18:53,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (76 of 79 remaining) [2023-11-06 22:18:53,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (75 of 79 remaining) [2023-11-06 22:18:53,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (74 of 79 remaining) [2023-11-06 22:18:53,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (73 of 79 remaining) [2023-11-06 22:18:53,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (72 of 79 remaining) [2023-11-06 22:18:53,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (71 of 79 remaining) [2023-11-06 22:18:53,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (70 of 79 remaining) [2023-11-06 22:18:53,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (69 of 79 remaining) [2023-11-06 22:18:53,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (68 of 79 remaining) [2023-11-06 22:18:53,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (67 of 79 remaining) [2023-11-06 22:18:53,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (66 of 79 remaining) [2023-11-06 22:18:53,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (65 of 79 remaining) [2023-11-06 22:18:53,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (64 of 79 remaining) [2023-11-06 22:18:53,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (63 of 79 remaining) [2023-11-06 22:18:53,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (62 of 79 remaining) [2023-11-06 22:18:53,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (61 of 79 remaining) [2023-11-06 22:18:53,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (60 of 79 remaining) [2023-11-06 22:18:53,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (59 of 79 remaining) [2023-11-06 22:18:53,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONDATA_RACE (58 of 79 remaining) [2023-11-06 22:18:53,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONDATA_RACE (57 of 79 remaining) [2023-11-06 22:18:53,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONDATA_RACE (56 of 79 remaining) [2023-11-06 22:18:53,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONDATA_RACE (55 of 79 remaining) [2023-11-06 22:18:53,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONDATA_RACE (54 of 79 remaining) [2023-11-06 22:18:53,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONDATA_RACE (53 of 79 remaining) [2023-11-06 22:18:53,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONDATA_RACE (52 of 79 remaining) [2023-11-06 22:18:53,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (51 of 79 remaining) [2023-11-06 22:18:53,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (50 of 79 remaining) [2023-11-06 22:18:53,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (49 of 79 remaining) [2023-11-06 22:18:53,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (48 of 79 remaining) [2023-11-06 22:18:53,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (47 of 79 remaining) [2023-11-06 22:18:53,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (46 of 79 remaining) [2023-11-06 22:18:53,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (45 of 79 remaining) [2023-11-06 22:18:53,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (44 of 79 remaining) [2023-11-06 22:18:53,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (43 of 79 remaining) [2023-11-06 22:18:53,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (42 of 79 remaining) [2023-11-06 22:18:53,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (41 of 79 remaining) [2023-11-06 22:18:53,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (40 of 79 remaining) [2023-11-06 22:18:53,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (39 of 79 remaining) [2023-11-06 22:18:53,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (38 of 79 remaining) [2023-11-06 22:18:53,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (37 of 79 remaining) [2023-11-06 22:18:53,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (36 of 79 remaining) [2023-11-06 22:18:53,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (35 of 79 remaining) [2023-11-06 22:18:53,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (34 of 79 remaining) [2023-11-06 22:18:53,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (33 of 79 remaining) [2023-11-06 22:18:53,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONDATA_RACE (32 of 79 remaining) [2023-11-06 22:18:53,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONDATA_RACE (31 of 79 remaining) [2023-11-06 22:18:53,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONDATA_RACE (30 of 79 remaining) [2023-11-06 22:18:53,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONDATA_RACE (29 of 79 remaining) [2023-11-06 22:18:53,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONDATA_RACE (28 of 79 remaining) [2023-11-06 22:18:53,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONDATA_RACE (27 of 79 remaining) [2023-11-06 22:18:53,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONDATA_RACE (26 of 79 remaining) [2023-11-06 22:18:53,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (25 of 79 remaining) [2023-11-06 22:18:53,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (24 of 79 remaining) [2023-11-06 22:18:53,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (23 of 79 remaining) [2023-11-06 22:18:53,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (22 of 79 remaining) [2023-11-06 22:18:53,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (21 of 79 remaining) [2023-11-06 22:18:53,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 79 remaining) [2023-11-06 22:18:53,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (19 of 79 remaining) [2023-11-06 22:18:53,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (18 of 79 remaining) [2023-11-06 22:18:53,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (17 of 79 remaining) [2023-11-06 22:18:53,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (16 of 79 remaining) [2023-11-06 22:18:53,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (15 of 79 remaining) [2023-11-06 22:18:53,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (14 of 79 remaining) [2023-11-06 22:18:53,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (13 of 79 remaining) [2023-11-06 22:18:53,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (12 of 79 remaining) [2023-11-06 22:18:53,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (11 of 79 remaining) [2023-11-06 22:18:53,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (10 of 79 remaining) [2023-11-06 22:18:53,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (9 of 79 remaining) [2023-11-06 22:18:53,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (8 of 79 remaining) [2023-11-06 22:18:53,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (7 of 79 remaining) [2023-11-06 22:18:53,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONDATA_RACE (6 of 79 remaining) [2023-11-06 22:18:53,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONDATA_RACE (5 of 79 remaining) [2023-11-06 22:18:53,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONDATA_RACE (4 of 79 remaining) [2023-11-06 22:18:53,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONDATA_RACE (3 of 79 remaining) [2023-11-06 22:18:53,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONDATA_RACE (2 of 79 remaining) [2023-11-06 22:18:53,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONDATA_RACE (1 of 79 remaining) [2023-11-06 22:18:53,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONDATA_RACE (0 of 79 remaining) [2023-11-06 22:18:53,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:18:53,959 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-06 22:18:53,959 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:18:53,960 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-06 22:18:54,097 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:18:54,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 402 places, 414 transitions, 846 flow [2023-11-06 22:18:54,280 INFO L124 PetriNetUnfolderBase]: 22/451 cut-off events. [2023-11-06 22:18:54,280 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 22:18:54,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464 conditions, 451 events. 22/451 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1705 event pairs, 0 based on Foata normal form. 0/347 useless extension candidates. Maximal degree in co-relation 391. Up to 8 conditions per place. [2023-11-06 22:18:54,293 INFO L82 GeneralOperation]: Start removeDead. Operand has 402 places, 414 transitions, 846 flow [2023-11-06 22:18:54,306 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 402 places, 414 transitions, 846 flow [2023-11-06 22:18:54,306 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:18:54,306 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 402 places, 414 transitions, 846 flow [2023-11-06 22:18:54,307 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 402 places, 414 transitions, 846 flow [2023-11-06 22:18:54,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 402 places, 414 transitions, 846 flow [2023-11-06 22:18:54,485 INFO L124 PetriNetUnfolderBase]: 22/451 cut-off events. [2023-11-06 22:18:54,486 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 22:18:54,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464 conditions, 451 events. 22/451 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1705 event pairs, 0 based on Foata normal form. 0/347 useless extension candidates. Maximal degree in co-relation 391. Up to 8 conditions per place. [2023-11-06 22:18:54,546 INFO L119 LiptonReduction]: Number of co-enabled transitions 106596 [2023-11-06 22:19:04,092 INFO L134 LiptonReduction]: Checked pairs total: 458955 [2023-11-06 22:19:04,092 INFO L136 LiptonReduction]: Total number of compositions: 261 [2023-11-06 22:19:04,095 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:19:04,095 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;@7a616321, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:19:04,096 INFO L358 AbstractCegarLoop]: Starting to check reachability of 105 error locations. [2023-11-06 22:19:04,098 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:19:04,098 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-11-06 22:19:04,098 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:19:04,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:19:04,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:19:04,099 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 101 more)] === [2023-11-06 22:19:04,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:04,099 INFO L85 PathProgramCache]: Analyzing trace with hash 80833457, now seen corresponding path program 1 times [2023-11-06 22:19:04,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:04,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007058605] [2023-11-06 22:19:04,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:04,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:04,115 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 22:19:04,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:04,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007058605] [2023-11-06 22:19:04,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007058605] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:04,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:04,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:19:04,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479833006] [2023-11-06 22:19:04,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:04,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:19:04,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:04,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:19:04,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:19:04,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 334 out of 675 [2023-11-06 22:19:04,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 228 transitions, 474 flow. Second operand has 2 states, 2 states have (on average 336.0) internal successors, (672), 2 states have internal predecessors, (672), 0 states have call successors, (0), 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 22:19:04,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:19:04,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 334 of 675 [2023-11-06 22:19:04,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:19:19,593 INFO L124 PetriNetUnfolderBase]: 63633/118275 cut-off events. [2023-11-06 22:19:19,593 INFO L125 PetriNetUnfolderBase]: For 3217/3217 co-relation queries the response was YES. [2023-11-06 22:19:19,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205404 conditions, 118275 events. 63633/118275 cut-off events. For 3217/3217 co-relation queries the response was YES. Maximal size of possible extension queue 3620. Compared 1291822 event pairs, 51993 based on Foata normal form. 0/97335 useless extension candidates. Maximal degree in co-relation 47668. Up to 85038 conditions per place. [2023-11-06 22:19:21,195 INFO L140 encePairwiseOnDemand]: 626/675 looper letters, 77 selfloop transitions, 0 changer transitions 0/179 dead transitions. [2023-11-06 22:19:21,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 179 transitions, 530 flow [2023-11-06 22:19:21,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:19:21,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:19:21,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 794 transitions. [2023-11-06 22:19:21,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5881481481481482 [2023-11-06 22:19:21,203 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 794 transitions. [2023-11-06 22:19:21,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 794 transitions. [2023-11-06 22:19:21,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:19:21,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 794 transitions. [2023-11-06 22:19:21,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 397.0) internal successors, (794), 2 states have internal predecessors, (794), 0 states have call successors, (0), 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 22:19:21,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 675.0) internal successors, (2025), 3 states have internal predecessors, (2025), 0 states have call successors, (0), 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 22:19:21,214 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 675.0) internal successors, (2025), 3 states have internal predecessors, (2025), 0 states have call successors, (0), 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 22:19:21,214 INFO L175 Difference]: Start difference. First operand has 220 places, 228 transitions, 474 flow. Second operand 2 states and 794 transitions. [2023-11-06 22:19:21,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 179 transitions, 530 flow [2023-11-06 22:19:21,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 179 transitions, 528 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-06 22:19:21,232 INFO L231 Difference]: Finished difference. Result has 175 places, 179 transitions, 374 flow [2023-11-06 22:19:21,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=675, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=374, PETRI_PLACES=175, PETRI_TRANSITIONS=179} [2023-11-06 22:19:21,235 INFO L281 CegarLoopForPetriNet]: 220 programPoint places, -45 predicate places. [2023-11-06 22:19:21,235 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 179 transitions, 374 flow [2023-11-06 22:19:21,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 336.0) internal successors, (672), 2 states have internal predecessors, (672), 0 states have call successors, (0), 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 22:19:21,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:19:21,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:19:21,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:19:21,237 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 101 more)] === [2023-11-06 22:19:21,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:21,237 INFO L85 PathProgramCache]: Analyzing trace with hash 371608563, now seen corresponding path program 1 times [2023-11-06 22:19:21,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:21,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209772233] [2023-11-06 22:19:21,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:21,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:21,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:21,289 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 22:19:21,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:21,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209772233] [2023-11-06 22:19:21,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209772233] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:21,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:21,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:19:21,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688811483] [2023-11-06 22:19:21,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:21,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:19:21,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:21,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:19:21,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:19:21,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 675 [2023-11-06 22:19:21,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 179 transitions, 374 flow. Second operand has 3 states, 3 states have (on average 324.0) internal successors, (972), 3 states have internal predecessors, (972), 0 states have call successors, (0), 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 22:19:21,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:19:21,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 675 [2023-11-06 22:19:21,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand