./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/26_stack_cas_longest-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b20720-8702-4186-a5fb-ada76e91ee99/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b20720-8702-4186-a5fb-ada76e91ee99/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_b0b20720-8702-4186-a5fb-ada76e91ee99/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b20720-8702-4186-a5fb-ada76e91ee99/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/26_stack_cas_longest-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b20720-8702-4186-a5fb-ada76e91ee99/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_b0b20720-8702-4186-a5fb-ada76e91ee99/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 79f59481c49375d27b8409383d6d600e90e5ee29536655deda4d0ae0ca7faefc --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:10:13,693 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:10:13,808 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b20720-8702-4186-a5fb-ada76e91ee99/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-06 23:10:13,817 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:10:13,818 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:10:13,858 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:10:13,859 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:10:13,860 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:10:13,861 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:10:13,866 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:10:13,867 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:10:13,867 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:10:13,868 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:10:13,870 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:10:13,870 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:10:13,870 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:10:13,871 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:10:13,871 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:10:13,872 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:10:13,872 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:10:13,873 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:10:13,873 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:10:13,874 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-06 23:10:13,874 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 23:10:13,875 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:10:13,875 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:10:13,875 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:10:13,876 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:10:13,877 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:10:13,877 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:10:13,878 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:10:13,879 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:10:13,879 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:10:13,879 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:10:13,879 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:10:13,880 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:10:13,880 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:10:13,880 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:10:13,880 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:10:13,881 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:10:13,881 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:10:13,881 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_b0b20720-8702-4186-a5fb-ada76e91ee99/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b20720-8702-4186-a5fb-ada76e91ee99/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79f59481c49375d27b8409383d6d600e90e5ee29536655deda4d0ae0ca7faefc [2023-11-06 23:10:14,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:10:14,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:10:14,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:10:14,236 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:10:14,236 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:10:14,238 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b20720-8702-4186-a5fb-ada76e91ee99/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-ext/26_stack_cas_longest-2.i [2023-11-06 23:10:17,331 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:10:17,673 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:10:17,673 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b20720-8702-4186-a5fb-ada76e91ee99/sv-benchmarks/c/pthread-ext/26_stack_cas_longest-2.i [2023-11-06 23:10:17,693 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b20720-8702-4186-a5fb-ada76e91ee99/bin/uautomizer-verify-WvqO1wxjHP/data/82d4897d1/4c14c410a7ee4260bd222d22faee661d/FLAG2f9528d1b [2023-11-06 23:10:17,709 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b20720-8702-4186-a5fb-ada76e91ee99/bin/uautomizer-verify-WvqO1wxjHP/data/82d4897d1/4c14c410a7ee4260bd222d22faee661d [2023-11-06 23:10:17,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:10:17,717 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:10:17,719 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:10:17,719 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:10:17,730 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:10:17,731 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:10:17" (1/1) ... [2023-11-06 23:10:17,732 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67b9e84c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:17, skipping insertion in model container [2023-11-06 23:10:17,732 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:10:17" (1/1) ... [2023-11-06 23:10:17,808 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:10:18,346 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:10:18,359 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:10:18,429 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:10:18,485 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:10:18,486 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:18 WrapperNode [2023-11-06 23:10:18,486 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:10:18,488 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:10:18,488 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:10:18,488 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:10:18,496 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:18" (1/1) ... [2023-11-06 23:10:18,536 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:18" (1/1) ... [2023-11-06 23:10:18,591 INFO L138 Inliner]: procedures = 177, calls = 48, calls flagged for inlining = 17, calls inlined = 20, statements flattened = 322 [2023-11-06 23:10:18,592 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:10:18,593 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:10:18,593 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:10:18,593 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:10:18,603 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:18" (1/1) ... [2023-11-06 23:10:18,603 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:18" (1/1) ... [2023-11-06 23:10:18,619 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:18" (1/1) ... [2023-11-06 23:10:18,627 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:18" (1/1) ... [2023-11-06 23:10:18,663 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:18" (1/1) ... [2023-11-06 23:10:18,669 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:18" (1/1) ... [2023-11-06 23:10:18,671 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:18" (1/1) ... [2023-11-06 23:10:18,674 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:18" (1/1) ... [2023-11-06 23:10:18,679 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:10:18,680 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:10:18,680 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:10:18,680 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:10:18,681 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:18" (1/1) ... [2023-11-06 23:10:18,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:10:18,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b20720-8702-4186-a5fb-ada76e91ee99/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:10:18,723 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b20720-8702-4186-a5fb-ada76e91ee99/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:10:18,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b20720-8702-4186-a5fb-ada76e91ee99/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:10:18,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 23:10:18,777 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-06 23:10:18,777 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-06 23:10:18,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 23:10:18,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:10:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:10:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:10:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:10:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:10:18,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:10:18,780 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 23:10:18,995 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:10:18,997 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:10:19,753 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:10:20,076 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:10:20,077 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-06 23:10:20,079 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:10:20 BoogieIcfgContainer [2023-11-06 23:10:20,080 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:10:20,082 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:10:20,083 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:10:20,086 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:10:20,086 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:10:17" (1/3) ... [2023-11-06 23:10:20,087 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@588bb8f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:10:20, skipping insertion in model container [2023-11-06 23:10:20,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:18" (2/3) ... [2023-11-06 23:10:20,088 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@588bb8f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:10:20, skipping insertion in model container [2023-11-06 23:10:20,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:10:20" (3/3) ... [2023-11-06 23:10:20,094 INFO L112 eAbstractionObserver]: Analyzing ICFG 26_stack_cas_longest-2.i [2023-11-06 23:10:20,104 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 23:10:20,115 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:10:20,116 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-11-06 23:10:20,116 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 23:10:20,300 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 23:10:20,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 185 transitions, 374 flow [2023-11-06 23:10:20,475 INFO L124 PetriNetUnfolderBase]: 11/196 cut-off events. [2023-11-06 23:10:20,477 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:10:20,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 196 events. 11/196 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 256 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 162. Up to 4 conditions per place. [2023-11-06 23:10:20,486 INFO L82 GeneralOperation]: Start removeDead. Operand has 178 places, 185 transitions, 374 flow [2023-11-06 23:10:20,496 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 178 places, 185 transitions, 374 flow [2023-11-06 23:10:20,500 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:10:20,515 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 178 places, 185 transitions, 374 flow [2023-11-06 23:10:20,520 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 178 places, 185 transitions, 374 flow [2023-11-06 23:10:20,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 185 transitions, 374 flow [2023-11-06 23:10:20,595 INFO L124 PetriNetUnfolderBase]: 11/196 cut-off events. [2023-11-06 23:10:20,595 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:10:20,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 196 events. 11/196 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 256 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 162. Up to 4 conditions per place. [2023-11-06 23:10:20,605 INFO L119 LiptonReduction]: Number of co-enabled transitions 4172 [2023-11-06 23:10:33,387 INFO L134 LiptonReduction]: Checked pairs total: 4898 [2023-11-06 23:10:33,387 INFO L136 LiptonReduction]: Total number of compositions: 204 [2023-11-06 23:10:33,406 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:10:33,413 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;@548e78db, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:10:33,413 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2023-11-06 23:10:33,419 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:10:33,426 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-11-06 23:10:33,426 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:10:33,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:10:33,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 23:10:33,428 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2023-11-06 23:10:33,434 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:33,434 INFO L85 PathProgramCache]: Analyzing trace with hash 39844510, now seen corresponding path program 1 times [2023-11-06 23:10:33,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:33,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248659449] [2023-11-06 23:10:33,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:33,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:33,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:10:33,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:33,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248659449] [2023-11-06 23:10:33,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248659449] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:33,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:10:33,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:10:33,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097230194] [2023-11-06 23:10:33,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:33,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 23:10:33,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:33,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 23:10:33,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 23:10:33,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 389 [2023-11-06 23:10:33,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 53 transitions, 110 flow. Second operand has 2 states, 2 states have (on average 158.0) internal successors, (316), 2 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:33,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:10:33,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 389 [2023-11-06 23:10:33,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:10:33,937 INFO L124 PetriNetUnfolderBase]: 43/93 cut-off events. [2023-11-06 23:10:33,937 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:10:33,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 93 events. 43/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 196 event pairs, 28 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 174. Up to 91 conditions per place. [2023-11-06 23:10:33,939 INFO L140 encePairwiseOnDemand]: 360/389 looper letters, 23 selfloop transitions, 0 changer transitions 0/24 dead transitions. [2023-11-06 23:10:33,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 24 transitions, 98 flow [2023-11-06 23:10:33,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 23:10:33,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 23:10:33,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 364 transitions. [2023-11-06 23:10:33,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46786632390745503 [2023-11-06 23:10:33,960 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 364 transitions. [2023-11-06 23:10:33,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 364 transitions. [2023-11-06 23:10:33,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:10:33,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 364 transitions. [2023-11-06 23:10:33,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 182.0) internal successors, (364), 2 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:33,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 389.0) internal successors, (1167), 3 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:33,977 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 389.0) internal successors, (1167), 3 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:33,978 INFO L175 Difference]: Start difference. First operand has 49 places, 53 transitions, 110 flow. Second operand 2 states and 364 transitions. [2023-11-06 23:10:33,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 24 transitions, 98 flow [2023-11-06 23:10:33,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 24 transitions, 98 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 23:10:33,982 INFO L231 Difference]: Finished difference. Result has 23 places, 24 transitions, 52 flow [2023-11-06 23:10:33,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=52, PETRI_PLACES=23, PETRI_TRANSITIONS=24} [2023-11-06 23:10:33,988 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -26 predicate places. [2023-11-06 23:10:33,989 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 24 transitions, 52 flow [2023-11-06 23:10:33,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 158.0) internal successors, (316), 2 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:33,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:10:33,989 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-06 23:10:33,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:10:33,990 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 23:10:33,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:33,991 INFO L85 PathProgramCache]: Analyzing trace with hash -364030235, now seen corresponding path program 1 times [2023-11-06 23:10:33,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:33,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185475292] [2023-11-06 23:10:33,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:33,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:10:34,038 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:10:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:10:34,090 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:10:34,091 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 23:10:34,093 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (52 of 53 remaining) [2023-11-06 23:10:34,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (51 of 53 remaining) [2023-11-06 23:10:34,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (50 of 53 remaining) [2023-11-06 23:10:34,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (49 of 53 remaining) [2023-11-06 23:10:34,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (48 of 53 remaining) [2023-11-06 23:10:34,098 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (47 of 53 remaining) [2023-11-06 23:10:34,099 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (46 of 53 remaining) [2023-11-06 23:10:34,099 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (45 of 53 remaining) [2023-11-06 23:10:34,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (44 of 53 remaining) [2023-11-06 23:10:34,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (43 of 53 remaining) [2023-11-06 23:10:34,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (42 of 53 remaining) [2023-11-06 23:10:34,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (41 of 53 remaining) [2023-11-06 23:10:34,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (40 of 53 remaining) [2023-11-06 23:10:34,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (39 of 53 remaining) [2023-11-06 23:10:34,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (38 of 53 remaining) [2023-11-06 23:10:34,104 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (37 of 53 remaining) [2023-11-06 23:10:34,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (36 of 53 remaining) [2023-11-06 23:10:34,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (35 of 53 remaining) [2023-11-06 23:10:34,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (34 of 53 remaining) [2023-11-06 23:10:34,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONDATA_RACE (33 of 53 remaining) [2023-11-06 23:10:34,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (32 of 53 remaining) [2023-11-06 23:10:34,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONDATA_RACE (31 of 53 remaining) [2023-11-06 23:10:34,113 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONDATA_RACE (30 of 53 remaining) [2023-11-06 23:10:34,114 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONDATA_RACE (29 of 53 remaining) [2023-11-06 23:10:34,114 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONDATA_RACE (28 of 53 remaining) [2023-11-06 23:10:34,114 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONDATA_RACE (27 of 53 remaining) [2023-11-06 23:10:34,115 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONDATA_RACE (26 of 53 remaining) [2023-11-06 23:10:34,115 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (25 of 53 remaining) [2023-11-06 23:10:34,115 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (24 of 53 remaining) [2023-11-06 23:10:34,115 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (23 of 53 remaining) [2023-11-06 23:10:34,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (22 of 53 remaining) [2023-11-06 23:10:34,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (21 of 53 remaining) [2023-11-06 23:10:34,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 53 remaining) [2023-11-06 23:10:34,120 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (19 of 53 remaining) [2023-11-06 23:10:34,121 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (18 of 53 remaining) [2023-11-06 23:10:34,122 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (17 of 53 remaining) [2023-11-06 23:10:34,122 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (16 of 53 remaining) [2023-11-06 23:10:34,122 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (15 of 53 remaining) [2023-11-06 23:10:34,122 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (14 of 53 remaining) [2023-11-06 23:10:34,124 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (13 of 53 remaining) [2023-11-06 23:10:34,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (12 of 53 remaining) [2023-11-06 23:10:34,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (11 of 53 remaining) [2023-11-06 23:10:34,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (10 of 53 remaining) [2023-11-06 23:10:34,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (9 of 53 remaining) [2023-11-06 23:10:34,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (8 of 53 remaining) [2023-11-06 23:10:34,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONDATA_RACE (7 of 53 remaining) [2023-11-06 23:10:34,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (6 of 53 remaining) [2023-11-06 23:10:34,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONDATA_RACE (5 of 53 remaining) [2023-11-06 23:10:34,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONDATA_RACE (4 of 53 remaining) [2023-11-06 23:10:34,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONDATA_RACE (3 of 53 remaining) [2023-11-06 23:10:34,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONDATA_RACE (2 of 53 remaining) [2023-11-06 23:10:34,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONDATA_RACE (1 of 53 remaining) [2023-11-06 23:10:34,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONDATA_RACE (0 of 53 remaining) [2023-11-06 23:10:34,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 23:10:34,137 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-06 23:10:34,140 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 23:10:34,141 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-06 23:10:34,294 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 23:10:34,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 321 places, 335 transitions, 680 flow [2023-11-06 23:10:34,418 INFO L124 PetriNetUnfolderBase]: 21/359 cut-off events. [2023-11-06 23:10:34,418 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 23:10:34,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 359 events. 21/359 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 999 event pairs, 0 based on Foata normal form. 0/283 useless extension candidates. Maximal degree in co-relation 311. Up to 6 conditions per place. [2023-11-06 23:10:34,425 INFO L82 GeneralOperation]: Start removeDead. Operand has 321 places, 335 transitions, 680 flow [2023-11-06 23:10:34,435 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 321 places, 335 transitions, 680 flow [2023-11-06 23:10:34,435 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:10:34,436 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 321 places, 335 transitions, 680 flow [2023-11-06 23:10:34,436 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 321 places, 335 transitions, 680 flow [2023-11-06 23:10:34,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 321 places, 335 transitions, 680 flow [2023-11-06 23:10:34,531 INFO L124 PetriNetUnfolderBase]: 21/359 cut-off events. [2023-11-06 23:10:34,531 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 23:10:34,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 359 events. 21/359 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 999 event pairs, 0 based on Foata normal form. 0/283 useless extension candidates. Maximal degree in co-relation 311. Up to 6 conditions per place. [2023-11-06 23:10:34,575 INFO L119 LiptonReduction]: Number of co-enabled transitions 53044 [2023-11-06 23:10:42,022 INFO L134 LiptonReduction]: Checked pairs total: 199489 [2023-11-06 23:10:42,022 INFO L136 LiptonReduction]: Total number of compositions: 197 [2023-11-06 23:10:42,027 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:10:42,029 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;@548e78db, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:10:42,033 INFO L358 AbstractCegarLoop]: Starting to check reachability of 79 error locations. [2023-11-06 23:10:42,035 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:10:42,036 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-11-06 23:10:42,036 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:10:42,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:10:42,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 23:10:42,036 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 23:10:42,036 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:42,037 INFO L85 PathProgramCache]: Analyzing trace with hash 60960554, now seen corresponding path program 1 times [2023-11-06 23:10:42,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:42,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028097227] [2023-11-06 23:10:42,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:42,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:42,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:42,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:10:42,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:42,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028097227] [2023-11-06 23:10:42,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028097227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:42,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:10:42,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:10:42,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067395840] [2023-11-06 23:10:42,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:42,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 23:10:42,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:42,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 23:10:42,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 23:10:42,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 532 [2023-11-06 23:10:42,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 179 transitions, 368 flow. Second operand has 2 states, 2 states have (on average 281.0) internal successors, (562), 2 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:42,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:10:42,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 532 [2023-11-06 23:10:42,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:10:43,262 INFO L124 PetriNetUnfolderBase]: 2334/5846 cut-off events. [2023-11-06 23:10:43,262 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-11-06 23:10:43,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9563 conditions, 5846 events. 2334/5846 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 49697 event pairs, 1824 based on Foata normal form. 0/5129 useless extension candidates. Maximal degree in co-relation 6600. Up to 3637 conditions per place. [2023-11-06 23:10:43,318 INFO L140 encePairwiseOnDemand]: 497/532 looper letters, 62 selfloop transitions, 0 changer transitions 0/144 dead transitions. [2023-11-06 23:10:43,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 144 transitions, 422 flow [2023-11-06 23:10:43,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 23:10:43,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 23:10:43,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 655 transitions. [2023-11-06 23:10:43,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6156015037593985 [2023-11-06 23:10:43,324 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 655 transitions. [2023-11-06 23:10:43,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 655 transitions. [2023-11-06 23:10:43,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:10:43,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 655 transitions. [2023-11-06 23:10:43,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 327.5) internal successors, (655), 2 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:43,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 532.0) internal successors, (1596), 3 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:43,337 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 532.0) internal successors, (1596), 3 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:43,337 INFO L175 Difference]: Start difference. First operand has 170 places, 179 transitions, 368 flow. Second operand 2 states and 655 transitions. [2023-11-06 23:10:43,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 144 transitions, 422 flow [2023-11-06 23:10:43,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 144 transitions, 422 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 23:10:43,346 INFO L231 Difference]: Finished difference. Result has 140 places, 144 transitions, 298 flow [2023-11-06 23:10:43,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=532, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=298, PETRI_PLACES=140, PETRI_TRANSITIONS=144} [2023-11-06 23:10:43,348 INFO L281 CegarLoopForPetriNet]: 170 programPoint places, -30 predicate places. [2023-11-06 23:10:43,348 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 144 transitions, 298 flow [2023-11-06 23:10:43,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 281.0) internal successors, (562), 2 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:43,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:10:43,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 23:10:43,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 23:10:43,350 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 23:10:43,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:43,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1546396371, now seen corresponding path program 1 times [2023-11-06 23:10:43,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:43,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194342151] [2023-11-06 23:10:43,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:43,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:43,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:43,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:10:43,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:43,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194342151] [2023-11-06 23:10:43,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194342151] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:43,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:10:43,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:10:43,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073111208] [2023-11-06 23:10:43,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:43,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:10:43,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:43,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:10:43,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:10:43,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 532 [2023-11-06 23:10:43,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 144 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:43,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:10:43,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 532 [2023-11-06 23:10:43,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:10:45,747 INFO L124 PetriNetUnfolderBase]: 5384/13246 cut-off events. [2023-11-06 23:10:45,751 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2023-11-06 23:10:45,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21815 conditions, 13246 events. 5384/13246 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 127021 event pairs, 2069 based on Foata normal form. 0/11598 useless extension candidates. Maximal degree in co-relation 21810. Up to 4333 conditions per place. [2023-11-06 23:10:45,869 INFO L140 encePairwiseOnDemand]: 524/532 looper letters, 128 selfloop transitions, 6 changer transitions 0/209 dead transitions. [2023-11-06 23:10:45,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 209 transitions, 701 flow [2023-11-06 23:10:45,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:10:45,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:10:45,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 949 transitions. [2023-11-06 23:10:45,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5946115288220551 [2023-11-06 23:10:45,875 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 949 transitions. [2023-11-06 23:10:45,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 949 transitions. [2023-11-06 23:10:45,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:10:45,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 949 transitions. [2023-11-06 23:10:45,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 316.3333333333333) internal successors, (949), 3 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:45,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 532.0) internal successors, (2128), 4 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:45,889 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 532.0) internal successors, (2128), 4 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:45,889 INFO L175 Difference]: Start difference. First operand has 140 places, 144 transitions, 298 flow. Second operand 3 states and 949 transitions. [2023-11-06 23:10:45,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 209 transitions, 701 flow [2023-11-06 23:10:45,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 209 transitions, 701 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 23:10:45,899 INFO L231 Difference]: Finished difference. Result has 144 places, 150 transitions, 350 flow [2023-11-06 23:10:45,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=532, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=350, PETRI_PLACES=144, PETRI_TRANSITIONS=150} [2023-11-06 23:10:45,904 INFO L281 CegarLoopForPetriNet]: 170 programPoint places, -26 predicate places. [2023-11-06 23:10:45,904 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 150 transitions, 350 flow [2023-11-06 23:10:45,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:45,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:10:45,905 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-06 23:10:45,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 23:10:45,906 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 75 more)] === [2023-11-06 23:10:45,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:45,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1410036246, now seen corresponding path program 1 times [2023-11-06 23:10:45,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:45,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910303824] [2023-11-06 23:10:45,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:45,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:45,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:10:45,956 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:10:45,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:10:45,992 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:10:45,992 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 23:10:45,993 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (78 of 79 remaining) [2023-11-06 23:10:45,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (77 of 79 remaining) [2023-11-06 23:10:45,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (76 of 79 remaining) [2023-11-06 23:10:45,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (75 of 79 remaining) [2023-11-06 23:10:45,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (74 of 79 remaining) [2023-11-06 23:10:45,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (73 of 79 remaining) [2023-11-06 23:10:45,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (72 of 79 remaining) [2023-11-06 23:10:45,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (71 of 79 remaining) [2023-11-06 23:10:45,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (70 of 79 remaining) [2023-11-06 23:10:45,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (69 of 79 remaining) [2023-11-06 23:10:45,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (68 of 79 remaining) [2023-11-06 23:10:45,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (67 of 79 remaining) [2023-11-06 23:10:45,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (66 of 79 remaining) [2023-11-06 23:10:45,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (65 of 79 remaining) [2023-11-06 23:10:45,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (64 of 79 remaining) [2023-11-06 23:10:45,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (63 of 79 remaining) [2023-11-06 23:10:45,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (62 of 79 remaining) [2023-11-06 23:10:45,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (61 of 79 remaining) [2023-11-06 23:10:45,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (60 of 79 remaining) [2023-11-06 23:10:45,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONDATA_RACE (59 of 79 remaining) [2023-11-06 23:10:45,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (58 of 79 remaining) [2023-11-06 23:10:45,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONDATA_RACE (57 of 79 remaining) [2023-11-06 23:10:45,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONDATA_RACE (56 of 79 remaining) [2023-11-06 23:10:45,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONDATA_RACE (55 of 79 remaining) [2023-11-06 23:10:45,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONDATA_RACE (54 of 79 remaining) [2023-11-06 23:10:45,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONDATA_RACE (53 of 79 remaining) [2023-11-06 23:10:45,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONDATA_RACE (52 of 79 remaining) [2023-11-06 23:10:45,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (51 of 79 remaining) [2023-11-06 23:10:45,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (50 of 79 remaining) [2023-11-06 23:10:45,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (49 of 79 remaining) [2023-11-06 23:10:45,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (48 of 79 remaining) [2023-11-06 23:10:45,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (47 of 79 remaining) [2023-11-06 23:10:45,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (46 of 79 remaining) [2023-11-06 23:10:45,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (45 of 79 remaining) [2023-11-06 23:10:45,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (44 of 79 remaining) [2023-11-06 23:10:45,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (43 of 79 remaining) [2023-11-06 23:10:45,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (42 of 79 remaining) [2023-11-06 23:10:45,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (41 of 79 remaining) [2023-11-06 23:10:46,000 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (40 of 79 remaining) [2023-11-06 23:10:46,000 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (39 of 79 remaining) [2023-11-06 23:10:46,000 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (38 of 79 remaining) [2023-11-06 23:10:46,000 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (37 of 79 remaining) [2023-11-06 23:10:46,000 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (36 of 79 remaining) [2023-11-06 23:10:46,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (35 of 79 remaining) [2023-11-06 23:10:46,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (34 of 79 remaining) [2023-11-06 23:10:46,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONDATA_RACE (33 of 79 remaining) [2023-11-06 23:10:46,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (32 of 79 remaining) [2023-11-06 23:10:46,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONDATA_RACE (31 of 79 remaining) [2023-11-06 23:10:46,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONDATA_RACE (30 of 79 remaining) [2023-11-06 23:10:46,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONDATA_RACE (29 of 79 remaining) [2023-11-06 23:10:46,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONDATA_RACE (28 of 79 remaining) [2023-11-06 23:10:46,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONDATA_RACE (27 of 79 remaining) [2023-11-06 23:10:46,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONDATA_RACE (26 of 79 remaining) [2023-11-06 23:10:46,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (25 of 79 remaining) [2023-11-06 23:10:46,008 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (24 of 79 remaining) [2023-11-06 23:10:46,008 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (23 of 79 remaining) [2023-11-06 23:10:46,008 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (22 of 79 remaining) [2023-11-06 23:10:46,008 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (21 of 79 remaining) [2023-11-06 23:10:46,008 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 79 remaining) [2023-11-06 23:10:46,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (19 of 79 remaining) [2023-11-06 23:10:46,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (18 of 79 remaining) [2023-11-06 23:10:46,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (17 of 79 remaining) [2023-11-06 23:10:46,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (16 of 79 remaining) [2023-11-06 23:10:46,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (15 of 79 remaining) [2023-11-06 23:10:46,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (14 of 79 remaining) [2023-11-06 23:10:46,010 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (13 of 79 remaining) [2023-11-06 23:10:46,010 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (12 of 79 remaining) [2023-11-06 23:10:46,010 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (11 of 79 remaining) [2023-11-06 23:10:46,010 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (10 of 79 remaining) [2023-11-06 23:10:46,010 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (9 of 79 remaining) [2023-11-06 23:10:46,010 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (8 of 79 remaining) [2023-11-06 23:10:46,011 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONDATA_RACE (7 of 79 remaining) [2023-11-06 23:10:46,011 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (6 of 79 remaining) [2023-11-06 23:10:46,011 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONDATA_RACE (5 of 79 remaining) [2023-11-06 23:10:46,011 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONDATA_RACE (4 of 79 remaining) [2023-11-06 23:10:46,011 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONDATA_RACE (3 of 79 remaining) [2023-11-06 23:10:46,011 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONDATA_RACE (2 of 79 remaining) [2023-11-06 23:10:46,012 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONDATA_RACE (1 of 79 remaining) [2023-11-06 23:10:46,012 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONDATA_RACE (0 of 79 remaining) [2023-11-06 23:10:46,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 23:10:46,012 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-06 23:10:46,013 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 23:10:46,013 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-06 23:10:46,146 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 23:10:46,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 464 places, 485 transitions, 988 flow [2023-11-06 23:10:46,363 INFO L124 PetriNetUnfolderBase]: 31/522 cut-off events. [2023-11-06 23:10:46,363 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 23:10:46,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 535 conditions, 522 events. 31/522 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1960 event pairs, 0 based on Foata normal form. 0/409 useless extension candidates. Maximal degree in co-relation 460. Up to 8 conditions per place. [2023-11-06 23:10:46,380 INFO L82 GeneralOperation]: Start removeDead. Operand has 464 places, 485 transitions, 988 flow [2023-11-06 23:10:46,391 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 464 places, 485 transitions, 988 flow [2023-11-06 23:10:46,392 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:10:46,392 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 464 places, 485 transitions, 988 flow [2023-11-06 23:10:46,392 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 464 places, 485 transitions, 988 flow [2023-11-06 23:10:46,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 464 places, 485 transitions, 988 flow [2023-11-06 23:10:46,550 INFO L124 PetriNetUnfolderBase]: 31/522 cut-off events. [2023-11-06 23:10:46,550 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 23:10:46,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 535 conditions, 522 events. 31/522 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1960 event pairs, 0 based on Foata normal form. 0/409 useless extension candidates. Maximal degree in co-relation 460. Up to 8 conditions per place. [2023-11-06 23:10:46,672 INFO L119 LiptonReduction]: Number of co-enabled transitions 146616 [2023-11-06 23:11:06,071 INFO L134 LiptonReduction]: Checked pairs total: 573447 [2023-11-06 23:11:06,071 INFO L136 LiptonReduction]: Total number of compositions: 299 [2023-11-06 23:11:06,074 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:11:06,079 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;@548e78db, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:11:06,079 INFO L358 AbstractCegarLoop]: Starting to check reachability of 105 error locations. [2023-11-06 23:11:06,081 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:11:06,081 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-06 23:11:06,081 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:11:06,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:11:06,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 23:11:06,082 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 23:11:06,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:11:06,083 INFO L85 PathProgramCache]: Analyzing trace with hash 89693260, now seen corresponding path program 1 times [2023-11-06 23:11:06,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:11:06,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570584911] [2023-11-06 23:11:06,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:06,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:11:06,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:06,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:11:06,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:11:06,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570584911] [2023-11-06 23:11:06,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570584911] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:11:06,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:11:06,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:11:06,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833513182] [2023-11-06 23:11:06,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:11:06,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 23:11:06,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:11:06,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 23:11:06,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 23:11:06,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 402 out of 784 [2023-11-06 23:11:06,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 266 transitions, 550 flow. Second operand has 2 states, 2 states have (on average 404.0) internal successors, (808), 2 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:11:06,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:11:06,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 402 of 784 [2023-11-06 23:11:06,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:11:31,939 INFO L124 PetriNetUnfolderBase]: 109243/205347 cut-off events. [2023-11-06 23:11:31,939 INFO L125 PetriNetUnfolderBase]: For 4081/4081 co-relation queries the response was YES. [2023-11-06 23:11:32,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353568 conditions, 205347 events. 109243/205347 cut-off events. For 4081/4081 co-relation queries the response was YES. Maximal size of possible extension queue 4868. Compared 2329516 event pairs, 85885 based on Foata normal form. 0/174567 useless extension candidates. Maximal degree in co-relation 134636. Up to 145564 conditions per place. [2023-11-06 23:11:34,022 INFO L140 encePairwiseOnDemand]: 732/784 looper letters, 93 selfloop transitions, 0 changer transitions 0/214 dead transitions. [2023-11-06 23:11:34,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 214 transitions, 632 flow [2023-11-06 23:11:34,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 23:11:34,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 23:11:34,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 949 transitions. [2023-11-06 23:11:34,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6052295918367347 [2023-11-06 23:11:34,027 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 949 transitions. [2023-11-06 23:11:34,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 949 transitions. [2023-11-06 23:11:34,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:11:34,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 949 transitions. [2023-11-06 23:11:34,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 474.5) internal successors, (949), 2 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:11:34,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 784.0) internal successors, (2352), 3 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:11:34,039 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 784.0) internal successors, (2352), 3 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:11:34,039 INFO L175 Difference]: Start difference. First operand has 252 places, 266 transitions, 550 flow. Second operand 2 states and 949 transitions. [2023-11-06 23:11:34,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 214 transitions, 632 flow [2023-11-06 23:11:34,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 214 transitions, 630 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-06 23:11:34,056 INFO L231 Difference]: Finished difference. Result has 207 places, 214 transitions, 444 flow [2023-11-06 23:11:34,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=784, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=444, PETRI_PLACES=207, PETRI_TRANSITIONS=214} [2023-11-06 23:11:34,060 INFO L281 CegarLoopForPetriNet]: 252 programPoint places, -45 predicate places. [2023-11-06 23:11:34,060 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 214 transitions, 444 flow [2023-11-06 23:11:34,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 404.0) internal successors, (808), 2 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:11:34,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:11:34,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 23:11:34,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 23:11:34,061 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 23:11:34,062 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:11:34,062 INFO L85 PathProgramCache]: Analyzing trace with hash 295951182, now seen corresponding path program 1 times [2023-11-06 23:11:34,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:11:34,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510828664] [2023-11-06 23:11:34,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:34,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:11:34,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:34,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:11:34,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:11:34,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510828664] [2023-11-06 23:11:34,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510828664] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:11:34,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:11:34,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:11:34,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2186626] [2023-11-06 23:11:34,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:11:34,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:11:34,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:11:34,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:11:34,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:11:34,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 390 out of 784 [2023-11-06 23:11:34,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 214 transitions, 444 flow. Second operand has 3 states, 3 states have (on average 392.0) internal successors, (1176), 3 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:11:34,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:11:34,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 390 of 784 [2023-11-06 23:11:34,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand