./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/12_fmaxsymopt_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d9d655-0a54-462b-a753-1a6737ae564c/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d9d655-0a54-462b-a753-1a6737ae564c/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_82d9d655-0a54-462b-a753-1a6737ae564c/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d9d655-0a54-462b-a753-1a6737ae564c/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/12_fmaxsymopt_cas.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d9d655-0a54-462b-a753-1a6737ae564c/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_82d9d655-0a54-462b-a753-1a6737ae564c/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 7a0803bc25bdee4cec741e6286f7294c3704d91bb65e5684830693d517eafafb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:53:17,881 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:53:17,994 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d9d655-0a54-462b-a753-1a6737ae564c/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-06 22:53:18,002 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:53:18,003 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:53:18,065 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:53:18,069 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:53:18,070 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:53:18,071 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:53:18,076 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:53:18,077 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:53:18,077 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:53:18,078 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:53:18,080 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:53:18,080 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:53:18,080 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:53:18,081 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:53:18,081 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:53:18,082 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:53:18,082 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:53:18,083 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:53:18,083 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:53:18,084 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-06 22:53:18,084 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:53:18,084 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:53:18,085 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:53:18,085 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:53:18,086 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:53:18,087 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:53:18,087 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:53:18,089 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:53:18,089 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:53:18,089 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:53:18,089 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:53:18,090 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:53:18,090 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:53:18,090 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:53:18,090 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:53:18,109 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:53:18,109 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:53:18,110 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:53:18,110 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_82d9d655-0a54-462b-a753-1a6737ae564c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d9d655-0a54-462b-a753-1a6737ae564c/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a0803bc25bdee4cec741e6286f7294c3704d91bb65e5684830693d517eafafb [2023-11-06 22:53:18,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:53:18,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:53:18,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:53:18,521 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:53:18,522 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:53:18,524 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d9d655-0a54-462b-a753-1a6737ae564c/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-ext/12_fmaxsymopt_cas.i [2023-11-06 22:53:21,663 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:53:22,032 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:53:22,037 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d9d655-0a54-462b-a753-1a6737ae564c/sv-benchmarks/c/pthread-ext/12_fmaxsymopt_cas.i [2023-11-06 22:53:22,054 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d9d655-0a54-462b-a753-1a6737ae564c/bin/uautomizer-verify-WvqO1wxjHP/data/aaa1e86f1/a3b0b697031449c0bce8d60b113a958d/FLAG2f816a0c2 [2023-11-06 22:53:22,079 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d9d655-0a54-462b-a753-1a6737ae564c/bin/uautomizer-verify-WvqO1wxjHP/data/aaa1e86f1/a3b0b697031449c0bce8d60b113a958d [2023-11-06 22:53:22,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:53:22,090 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:53:22,095 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:53:22,095 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:53:22,101 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:53:22,101 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:53:22" (1/1) ... [2023-11-06 22:53:22,103 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6962f397 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:22, skipping insertion in model container [2023-11-06 22:53:22,103 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:53:22" (1/1) ... [2023-11-06 22:53:22,168 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:53:22,555 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:53:22,567 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:53:22,648 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:53:22,703 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:53:22,703 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:22 WrapperNode [2023-11-06 22:53:22,704 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:53:22,705 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:53:22,705 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:53:22,705 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:53:22,714 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:22" (1/1) ... [2023-11-06 22:53:22,748 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:22" (1/1) ... [2023-11-06 22:53:22,788 INFO L138 Inliner]: procedures = 170, calls = 33, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 150 [2023-11-06 22:53:22,788 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:53:22,789 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:53:22,789 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:53:22,790 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:53:22,800 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:22" (1/1) ... [2023-11-06 22:53:22,800 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:22" (1/1) ... [2023-11-06 22:53:22,804 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:22" (1/1) ... [2023-11-06 22:53:22,804 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:22" (1/1) ... [2023-11-06 22:53:22,817 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:22" (1/1) ... [2023-11-06 22:53:22,822 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:22" (1/1) ... [2023-11-06 22:53:22,824 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:22" (1/1) ... [2023-11-06 22:53:22,826 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:22" (1/1) ... [2023-11-06 22:53:22,830 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:53:22,831 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:53:22,831 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:53:22,831 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:53:22,832 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:22" (1/1) ... [2023-11-06 22:53:22,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:53:22,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d9d655-0a54-462b-a753-1a6737ae564c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:53:22,879 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d9d655-0a54-462b-a753-1a6737ae564c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:53:22,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d9d655-0a54-462b-a753-1a6737ae564c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:53:22,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:53:22,920 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-06 22:53:22,920 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-06 22:53:22,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:53:22,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:53:22,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:53:22,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:53:22,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:53:22,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:53:22,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:53:22,924 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:53:23,066 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:53:23,069 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:53:23,461 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:53:23,722 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:53:23,723 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-06 22:53:23,725 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:53:23 BoogieIcfgContainer [2023-11-06 22:53:23,725 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:53:23,728 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:53:23,728 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:53:23,732 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:53:23,733 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:53:22" (1/3) ... [2023-11-06 22:53:23,733 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13278f3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:53:23, skipping insertion in model container [2023-11-06 22:53:23,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:22" (2/3) ... [2023-11-06 22:53:23,736 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13278f3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:53:23, skipping insertion in model container [2023-11-06 22:53:23,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:53:23" (3/3) ... [2023-11-06 22:53:23,738 INFO L112 eAbstractionObserver]: Analyzing ICFG 12_fmaxsymopt_cas.i [2023-11-06 22:53:23,748 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:53:23,760 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:53:23,760 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-06 22:53:23,761 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:53:23,879 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:53:23,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 131 transitions, 266 flow [2023-11-06 22:53:24,044 INFO L124 PetriNetUnfolderBase]: 13/142 cut-off events. [2023-11-06 22:53:24,047 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:53:24,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 142 events. 13/142 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 231 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 109. Up to 4 conditions per place. [2023-11-06 22:53:24,054 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 131 transitions, 266 flow [2023-11-06 22:53:24,065 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 131 transitions, 266 flow [2023-11-06 22:53:24,071 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:53:24,094 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 131 transitions, 266 flow [2023-11-06 22:53:24,099 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 122 places, 131 transitions, 266 flow [2023-11-06 22:53:24,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 131 transitions, 266 flow [2023-11-06 22:53:24,141 INFO L124 PetriNetUnfolderBase]: 13/142 cut-off events. [2023-11-06 22:53:24,141 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:53:24,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 142 events. 13/142 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 231 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 109. Up to 4 conditions per place. [2023-11-06 22:53:24,146 INFO L119 LiptonReduction]: Number of co-enabled transitions 2688 [2023-11-06 22:53:41,433 INFO L134 LiptonReduction]: Checked pairs total: 2752 [2023-11-06 22:53:41,433 INFO L136 LiptonReduction]: Total number of compositions: 147 [2023-11-06 22:53:41,449 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:53:41,456 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;@598e090d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:53:41,456 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-06 22:53:41,460 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:53:41,461 INFO L124 PetriNetUnfolderBase]: 1/10 cut-off events. [2023-11-06 22:53:41,461 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:53:41,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:41,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:53:41,462 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2023-11-06 22:53:41,467 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:41,468 INFO L85 PathProgramCache]: Analyzing trace with hash 648074984, now seen corresponding path program 1 times [2023-11-06 22:53:41,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:41,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143310175] [2023-11-06 22:53:41,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:41,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:41,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:41,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:53:41,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:41,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143310175] [2023-11-06 22:53:41,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143310175] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:41,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:41,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:53:41,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002697585] [2023-11-06 22:53:41,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:41,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:53:41,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:41,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:53:41,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:53:41,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 278 [2023-11-06 22:53:41,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 26 transitions, 56 flow. Second operand has 2 states, 2 states have (on average 118.5) internal successors, (237), 2 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:41,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:41,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 278 [2023-11-06 22:53:41,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:53:41,890 INFO L124 PetriNetUnfolderBase]: 25/55 cut-off events. [2023-11-06 22:53:41,890 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:53:41,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 55 events. 25/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 110 event pairs, 16 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 102. Up to 55 conditions per place. [2023-11-06 22:53:41,892 INFO L140 encePairwiseOnDemand]: 268/278 looper letters, 15 selfloop transitions, 0 changer transitions 0/16 dead transitions. [2023-11-06 22:53:41,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 16 transitions, 66 flow [2023-11-06 22:53:41,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:53:41,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:53:41,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 257 transitions. [2023-11-06 22:53:41,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46223021582733814 [2023-11-06 22:53:41,919 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 257 transitions. [2023-11-06 22:53:41,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 257 transitions. [2023-11-06 22:53:41,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:53:41,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 257 transitions. [2023-11-06 22:53:41,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 128.5) internal successors, (257), 2 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:41,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:41,937 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:41,939 INFO L175 Difference]: Start difference. First operand has 24 places, 26 transitions, 56 flow. Second operand 2 states and 257 transitions. [2023-11-06 22:53:41,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 16 transitions, 66 flow [2023-11-06 22:53:41,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 16 transitions, 66 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:53:41,944 INFO L231 Difference]: Finished difference. Result has 17 places, 16 transitions, 36 flow [2023-11-06 22:53:41,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=36, PETRI_PLACES=17, PETRI_TRANSITIONS=16} [2023-11-06 22:53:41,952 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -7 predicate places. [2023-11-06 22:53:41,953 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 16 transitions, 36 flow [2023-11-06 22:53:41,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 118.5) internal successors, (237), 2 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:41,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:41,954 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-06 22:53:41,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:53:41,955 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2023-11-06 22:53:41,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:41,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1384637795, now seen corresponding path program 1 times [2023-11-06 22:53:41,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:41,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587444324] [2023-11-06 22:53:41,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:41,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:41,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:53:41,989 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:53:42,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:53:42,029 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:53:42,029 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:53:42,031 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-06 22:53:42,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2023-11-06 22:53:42,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2023-11-06 22:53:42,034 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2023-11-06 22:53:42,034 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2023-11-06 22:53:42,034 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2023-11-06 22:53:42,034 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2023-11-06 22:53:42,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2023-11-06 22:53:42,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2023-11-06 22:53:42,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2023-11-06 22:53:42,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2023-11-06 22:53:42,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2023-11-06 22:53:42,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2023-11-06 22:53:42,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2023-11-06 22:53:42,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2023-11-06 22:53:42,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2023-11-06 22:53:42,040 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2023-11-06 22:53:42,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:53:42,041 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-06 22:53:42,045 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:53:42,046 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-06 22:53:42,122 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:53:42,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 228 transitions, 466 flow [2023-11-06 22:53:42,192 INFO L124 PetriNetUnfolderBase]: 25/252 cut-off events. [2023-11-06 22:53:42,193 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:53:42,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 252 events. 25/252 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 722 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 205. Up to 6 conditions per place. [2023-11-06 22:53:42,200 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 228 transitions, 466 flow [2023-11-06 22:53:42,205 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 210 places, 228 transitions, 466 flow [2023-11-06 22:53:42,205 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:53:42,205 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 210 places, 228 transitions, 466 flow [2023-11-06 22:53:42,206 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 210 places, 228 transitions, 466 flow [2023-11-06 22:53:42,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 228 transitions, 466 flow [2023-11-06 22:53:42,270 INFO L124 PetriNetUnfolderBase]: 25/252 cut-off events. [2023-11-06 22:53:42,272 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:53:42,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 252 events. 25/252 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 722 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 205. Up to 6 conditions per place. [2023-11-06 22:53:42,291 INFO L119 LiptonReduction]: Number of co-enabled transitions 24000 [2023-11-06 22:54:02,582 INFO L134 LiptonReduction]: Checked pairs total: 79433 [2023-11-06 22:54:02,582 INFO L136 LiptonReduction]: Total number of compositions: 202 [2023-11-06 22:54:02,585 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:54:02,586 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;@598e090d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:54:02,587 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-11-06 22:54:02,593 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:54:02,593 INFO L124 PetriNetUnfolderBase]: 1/36 cut-off events. [2023-11-06 22:54:02,593 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:54:02,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:54:02,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:54:02,594 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-11-06 22:54:02,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:02,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1153066344, now seen corresponding path program 1 times [2023-11-06 22:54:02,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:02,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271330005] [2023-11-06 22:54:02,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:02,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:02,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:03,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:54:03,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:03,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271330005] [2023-11-06 22:54:03,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271330005] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:03,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:03,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:54:03,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900047646] [2023-11-06 22:54:03,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:03,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:54:03,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:03,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:54:03,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:54:03,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 430 [2023-11-06 22:54:03,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 94 transitions, 198 flow. Second operand has 6 states, 6 states have (on average 189.66666666666666) internal successors, (1138), 6 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:03,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:54:03,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 430 [2023-11-06 22:54:03,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:54:05,210 INFO L124 PetriNetUnfolderBase]: 881/2111 cut-off events. [2023-11-06 22:54:05,210 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2023-11-06 22:54:05,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3560 conditions, 2111 events. 881/2111 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 15431 event pairs, 433 based on Foata normal form. 138/1920 useless extension candidates. Maximal degree in co-relation 1486. Up to 1050 conditions per place. [2023-11-06 22:54:05,227 INFO L140 encePairwiseOnDemand]: 407/430 looper letters, 96 selfloop transitions, 10 changer transitions 0/146 dead transitions. [2023-11-06 22:54:05,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 146 transitions, 534 flow [2023-11-06 22:54:05,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:54:05,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:54:05,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1283 transitions. [2023-11-06 22:54:05,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4972868217054264 [2023-11-06 22:54:05,233 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1283 transitions. [2023-11-06 22:54:05,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1283 transitions. [2023-11-06 22:54:05,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:54:05,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1283 transitions. [2023-11-06 22:54:05,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 213.83333333333334) internal successors, (1283), 6 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:05,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 430.0) internal successors, (3010), 7 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:05,249 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 430.0) internal successors, (3010), 7 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:05,249 INFO L175 Difference]: Start difference. First operand has 87 places, 94 transitions, 198 flow. Second operand 6 states and 1283 transitions. [2023-11-06 22:54:05,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 146 transitions, 534 flow [2023-11-06 22:54:05,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 146 transitions, 534 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:54:05,254 INFO L231 Difference]: Finished difference. Result has 86 places, 86 transitions, 236 flow [2023-11-06 22:54:05,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=430, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=86, PETRI_TRANSITIONS=86} [2023-11-06 22:54:05,256 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -1 predicate places. [2023-11-06 22:54:05,256 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 86 transitions, 236 flow [2023-11-06 22:54:05,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 189.66666666666666) internal successors, (1138), 6 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:05,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:54:05,257 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-06 22:54:05,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:54:05,258 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-11-06 22:54:05,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:05,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1958466664, now seen corresponding path program 1 times [2023-11-06 22:54:05,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:05,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313863107] [2023-11-06 22:54:05,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:05,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:05,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:54:05,274 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:54:05,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:54:05,290 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:54:05,291 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:54:05,291 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2023-11-06 22:54:05,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2023-11-06 22:54:05,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2023-11-06 22:54:05,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2023-11-06 22:54:05,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2023-11-06 22:54:05,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2023-11-06 22:54:05,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2023-11-06 22:54:05,293 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2023-11-06 22:54:05,293 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2023-11-06 22:54:05,293 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2023-11-06 22:54:05,293 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2023-11-06 22:54:05,293 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2023-11-06 22:54:05,294 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2023-11-06 22:54:05,294 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2023-11-06 22:54:05,294 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2023-11-06 22:54:05,294 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2023-11-06 22:54:05,294 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2023-11-06 22:54:05,295 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2023-11-06 22:54:05,295 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2023-11-06 22:54:05,295 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2023-11-06 22:54:05,295 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2023-11-06 22:54:05,296 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2023-11-06 22:54:05,296 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2023-11-06 22:54:05,296 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2023-11-06 22:54:05,296 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2023-11-06 22:54:05,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:54:05,297 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-06 22:54:05,297 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:54:05,298 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-06 22:54:05,392 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:54:05,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 298 places, 325 transitions, 668 flow [2023-11-06 22:54:05,514 INFO L124 PetriNetUnfolderBase]: 37/362 cut-off events. [2023-11-06 22:54:05,515 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 22:54:05,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 362 events. 37/362 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1314 event pairs, 0 based on Foata normal form. 0/297 useless extension candidates. Maximal degree in co-relation 301. Up to 8 conditions per place. [2023-11-06 22:54:05,519 INFO L82 GeneralOperation]: Start removeDead. Operand has 298 places, 325 transitions, 668 flow [2023-11-06 22:54:05,526 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 298 places, 325 transitions, 668 flow [2023-11-06 22:54:05,527 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:54:05,527 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 298 places, 325 transitions, 668 flow [2023-11-06 22:54:05,527 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 298 places, 325 transitions, 668 flow [2023-11-06 22:54:05,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 298 places, 325 transitions, 668 flow [2023-11-06 22:54:05,600 INFO L124 PetriNetUnfolderBase]: 37/362 cut-off events. [2023-11-06 22:54:05,600 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 22:54:05,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 362 events. 37/362 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1314 event pairs, 0 based on Foata normal form. 0/297 useless extension candidates. Maximal degree in co-relation 301. Up to 8 conditions per place. [2023-11-06 22:54:05,636 INFO L119 LiptonReduction]: Number of co-enabled transitions 63936 [2023-11-06 22:54:20,724 INFO L134 LiptonReduction]: Checked pairs total: 217639 [2023-11-06 22:54:20,725 INFO L136 LiptonReduction]: Total number of compositions: 262 [2023-11-06 22:54:20,727 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:54:20,728 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;@598e090d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:54:20,729 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2023-11-06 22:54:20,734 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:54:20,734 INFO L124 PetriNetUnfolderBase]: 2/38 cut-off events. [2023-11-06 22:54:20,734 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 22:54:20,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:54:20,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:54:20,735 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-11-06 22:54:20,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:20,735 INFO L85 PathProgramCache]: Analyzing trace with hash -988436159, now seen corresponding path program 1 times [2023-11-06 22:54:20,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:20,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140227856] [2023-11-06 22:54:20,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:20,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:20,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:21,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:54:21,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:21,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140227856] [2023-11-06 22:54:21,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140227856] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:21,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:21,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:54:21,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055839366] [2023-11-06 22:54:21,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:21,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:54:21,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:21,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:54:21,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:54:22,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 587 [2023-11-06 22:54:22,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 139 transitions, 296 flow. Second operand has 6 states, 6 states have (on average 273.6666666666667) internal successors, (1642), 6 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:22,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:54:22,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 587 [2023-11-06 22:54:22,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:54:27,978 INFO L124 PetriNetUnfolderBase]: 16785/31824 cut-off events. [2023-11-06 22:54:27,978 INFO L125 PetriNetUnfolderBase]: For 1612/1612 co-relation queries the response was YES. [2023-11-06 22:54:28,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55320 conditions, 31824 events. 16785/31824 cut-off events. For 1612/1612 co-relation queries the response was YES. Maximal size of possible extension queue 1217. Compared 307209 event pairs, 9577 based on Foata normal form. 1992/28306 useless extension candidates. Maximal degree in co-relation 7296. Up to 18434 conditions per place. [2023-11-06 22:54:28,234 INFO L140 encePairwiseOnDemand]: 557/587 looper letters, 157 selfloop transitions, 13 changer transitions 0/232 dead transitions. [2023-11-06 22:54:28,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 232 transitions, 870 flow [2023-11-06 22:54:28,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:54:28,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:54:28,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1886 transitions. [2023-11-06 22:54:28,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5354911981828506 [2023-11-06 22:54:28,243 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1886 transitions. [2023-11-06 22:54:28,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1886 transitions. [2023-11-06 22:54:28,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:54:28,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1886 transitions. [2023-11-06 22:54:28,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 314.3333333333333) internal successors, (1886), 6 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:28,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 587.0) internal successors, (4109), 7 states have internal predecessors, (4109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:28,264 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 587.0) internal successors, (4109), 7 states have internal predecessors, (4109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:28,264 INFO L175 Difference]: Start difference. First operand has 128 places, 139 transitions, 296 flow. Second operand 6 states and 1886 transitions. [2023-11-06 22:54:28,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 232 transitions, 870 flow [2023-11-06 22:54:28,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 232 transitions, 860 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-11-06 22:54:28,279 INFO L231 Difference]: Finished difference. Result has 119 places, 124 transitions, 320 flow [2023-11-06 22:54:28,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=320, PETRI_PLACES=119, PETRI_TRANSITIONS=124} [2023-11-06 22:54:28,281 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -9 predicate places. [2023-11-06 22:54:28,282 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 124 transitions, 320 flow [2023-11-06 22:54:28,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 273.6666666666667) internal successors, (1642), 6 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:28,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:54:28,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:54:28,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:54:28,284 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-11-06 22:54:28,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:28,285 INFO L85 PathProgramCache]: Analyzing trace with hash 763234923, now seen corresponding path program 1 times [2023-11-06 22:54:28,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:28,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495234862] [2023-11-06 22:54:28,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:28,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:28,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:28,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:54:28,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:28,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495234862] [2023-11-06 22:54:28,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495234862] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:28,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:28,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:54:28,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758575372] [2023-11-06 22:54:28,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:28,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:54:28,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:28,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:54:28,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:54:28,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 587 [2023-11-06 22:54:28,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 124 transitions, 320 flow. Second operand has 3 states, 3 states have (on average 279.0) internal successors, (837), 3 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:28,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:54:28,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 587 [2023-11-06 22:54:28,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:54:33,944 INFO L124 PetriNetUnfolderBase]: 16175/34847 cut-off events. [2023-11-06 22:54:33,944 INFO L125 PetriNetUnfolderBase]: For 2760/3606 co-relation queries the response was YES. [2023-11-06 22:54:34,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62496 conditions, 34847 events. 16175/34847 cut-off events. For 2760/3606 co-relation queries the response was YES. Maximal size of possible extension queue 1379. Compared 373218 event pairs, 8613 based on Foata normal form. 278/30750 useless extension candidates. Maximal degree in co-relation 54771. Up to 16900 conditions per place. [2023-11-06 22:54:34,234 INFO L140 encePairwiseOnDemand]: 584/587 looper letters, 91 selfloop transitions, 3 changer transitions 0/164 dead transitions. [2023-11-06 22:54:34,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 164 transitions, 631 flow [2023-11-06 22:54:34,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:54:34,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:54:34,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 908 transitions. [2023-11-06 22:54:34,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5156161272004542 [2023-11-06 22:54:34,240 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 908 transitions. [2023-11-06 22:54:34,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 908 transitions. [2023-11-06 22:54:34,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:54:34,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 908 transitions. [2023-11-06 22:54:34,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 302.6666666666667) internal successors, (908), 3 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:34,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 587.0) internal successors, (2348), 4 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:34,251 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 587.0) internal successors, (2348), 4 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:34,252 INFO L175 Difference]: Start difference. First operand has 119 places, 124 transitions, 320 flow. Second operand 3 states and 908 transitions. [2023-11-06 22:54:34,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 164 transitions, 631 flow [2023-11-06 22:54:34,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 164 transitions, 631 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:54:34,280 INFO L231 Difference]: Finished difference. Result has 122 places, 126 transitions, 344 flow [2023-11-06 22:54:34,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=344, PETRI_PLACES=122, PETRI_TRANSITIONS=126} [2023-11-06 22:54:34,282 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -6 predicate places. [2023-11-06 22:54:34,282 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 126 transitions, 344 flow [2023-11-06 22:54:34,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 279.0) internal successors, (837), 3 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:34,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:54:34,283 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:54:34,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:54:34,284 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-11-06 22:54:34,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:34,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1867006861, now seen corresponding path program 1 times [2023-11-06 22:54:34,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:34,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425638026] [2023-11-06 22:54:34,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:34,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:34,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:34,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:54:34,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:34,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425638026] [2023-11-06 22:54:34,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425638026] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:34,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:34,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:54:34,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027672619] [2023-11-06 22:54:34,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:34,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:54:34,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:34,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:54:34,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:54:35,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 587 [2023-11-06 22:54:35,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 126 transitions, 344 flow. Second operand has 6 states, 6 states have (on average 273.8333333333333) internal successors, (1643), 6 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:35,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:54:35,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 587 [2023-11-06 22:54:35,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:54:45,555 INFO L124 PetriNetUnfolderBase]: 27393/53851 cut-off events. [2023-11-06 22:54:45,555 INFO L125 PetriNetUnfolderBase]: For 11615/13169 co-relation queries the response was YES. [2023-11-06 22:54:45,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102222 conditions, 53851 events. 27393/53851 cut-off events. For 11615/13169 co-relation queries the response was YES. Maximal size of possible extension queue 2141. Compared 572197 event pairs, 13771 based on Foata normal form. 838/48514 useless extension candidates. Maximal degree in co-relation 70926. Up to 29148 conditions per place. [2023-11-06 22:54:46,049 INFO L140 encePairwiseOnDemand]: 578/587 looper letters, 180 selfloop transitions, 30 changer transitions 0/275 dead transitions. [2023-11-06 22:54:46,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 275 transitions, 1238 flow [2023-11-06 22:54:46,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:54:46,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:54:46,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1804 transitions. [2023-11-06 22:54:46,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5122089721749006 [2023-11-06 22:54:46,058 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1804 transitions. [2023-11-06 22:54:46,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1804 transitions. [2023-11-06 22:54:46,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:54:46,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1804 transitions. [2023-11-06 22:54:46,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 300.6666666666667) internal successors, (1804), 6 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:46,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 587.0) internal successors, (4109), 7 states have internal predecessors, (4109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:46,078 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 587.0) internal successors, (4109), 7 states have internal predecessors, (4109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:46,078 INFO L175 Difference]: Start difference. First operand has 122 places, 126 transitions, 344 flow. Second operand 6 states and 1804 transitions. [2023-11-06 22:54:46,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 275 transitions, 1238 flow [2023-11-06 22:54:46,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 275 transitions, 1223 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:54:46,098 INFO L231 Difference]: Finished difference. Result has 131 places, 155 transitions, 599 flow [2023-11-06 22:54:46,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=599, PETRI_PLACES=131, PETRI_TRANSITIONS=155} [2023-11-06 22:54:46,100 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, 3 predicate places. [2023-11-06 22:54:46,100 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 155 transitions, 599 flow [2023-11-06 22:54:46,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 273.8333333333333) internal successors, (1643), 6 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:46,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:54:46,102 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-11-06 22:54:46,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:54:46,103 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-11-06 22:54:46,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:46,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1525749589, now seen corresponding path program 1 times [2023-11-06 22:54:46,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:46,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411867166] [2023-11-06 22:54:46,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:46,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:46,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:54:46,121 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:54:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:54:46,157 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:54:46,157 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:54:46,157 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2023-11-06 22:54:46,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 33 remaining) [2023-11-06 22:54:46,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (30 of 33 remaining) [2023-11-06 22:54:46,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (29 of 33 remaining) [2023-11-06 22:54:46,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (28 of 33 remaining) [2023-11-06 22:54:46,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (27 of 33 remaining) [2023-11-06 22:54:46,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (26 of 33 remaining) [2023-11-06 22:54:46,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (25 of 33 remaining) [2023-11-06 22:54:46,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (24 of 33 remaining) [2023-11-06 22:54:46,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 33 remaining) [2023-11-06 22:54:46,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 33 remaining) [2023-11-06 22:54:46,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (21 of 33 remaining) [2023-11-06 22:54:46,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (20 of 33 remaining) [2023-11-06 22:54:46,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 33 remaining) [2023-11-06 22:54:46,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (18 of 33 remaining) [2023-11-06 22:54:46,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (17 of 33 remaining) [2023-11-06 22:54:46,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (16 of 33 remaining) [2023-11-06 22:54:46,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 33 remaining) [2023-11-06 22:54:46,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 33 remaining) [2023-11-06 22:54:46,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (13 of 33 remaining) [2023-11-06 22:54:46,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 33 remaining) [2023-11-06 22:54:46,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 33 remaining) [2023-11-06 22:54:46,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 33 remaining) [2023-11-06 22:54:46,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (9 of 33 remaining) [2023-11-06 22:54:46,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (8 of 33 remaining) [2023-11-06 22:54:46,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 33 remaining) [2023-11-06 22:54:46,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 33 remaining) [2023-11-06 22:54:46,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (5 of 33 remaining) [2023-11-06 22:54:46,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 33 remaining) [2023-11-06 22:54:46,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 33 remaining) [2023-11-06 22:54:46,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 33 remaining) [2023-11-06 22:54:46,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 33 remaining) [2023-11-06 22:54:46,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 33 remaining) [2023-11-06 22:54:46,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:54:46,167 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-06 22:54:46,169 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:54:46,169 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-06 22:54:46,270 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:54:46,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 386 places, 422 transitions, 872 flow [2023-11-06 22:54:46,382 INFO L124 PetriNetUnfolderBase]: 49/472 cut-off events. [2023-11-06 22:54:46,382 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-06 22:54:46,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 491 conditions, 472 events. 49/472 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1948 event pairs, 0 based on Foata normal form. 0/386 useless extension candidates. Maximal degree in co-relation 397. Up to 10 conditions per place. [2023-11-06 22:54:46,390 INFO L82 GeneralOperation]: Start removeDead. Operand has 386 places, 422 transitions, 872 flow [2023-11-06 22:54:46,400 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 386 places, 422 transitions, 872 flow [2023-11-06 22:54:46,400 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:54:46,401 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 386 places, 422 transitions, 872 flow [2023-11-06 22:54:46,401 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 386 places, 422 transitions, 872 flow [2023-11-06 22:54:46,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 386 places, 422 transitions, 872 flow [2023-11-06 22:54:46,512 INFO L124 PetriNetUnfolderBase]: 49/472 cut-off events. [2023-11-06 22:54:46,513 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-06 22:54:46,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 491 conditions, 472 events. 49/472 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1948 event pairs, 0 based on Foata normal form. 0/386 useless extension candidates. Maximal degree in co-relation 397. Up to 10 conditions per place. [2023-11-06 22:54:46,557 INFO L119 LiptonReduction]: Number of co-enabled transitions 122496 [2023-11-06 22:55:19,590 INFO L134 LiptonReduction]: Checked pairs total: 427228 [2023-11-06 22:55:19,590 INFO L136 LiptonReduction]: Total number of compositions: 365 [2023-11-06 22:55:19,592 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:55:19,593 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;@598e090d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:55:19,593 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2023-11-06 22:55:19,598 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:55:19,598 INFO L124 PetriNetUnfolderBase]: 1/36 cut-off events. [2023-11-06 22:55:19,598 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 22:55:19,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:55:19,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:55:19,599 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2023-11-06 22:55:19,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:55:19,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1864616352, now seen corresponding path program 1 times [2023-11-06 22:55:19,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:55:19,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820227497] [2023-11-06 22:55:19,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:55:19,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:55:19,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:19,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:55:19,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:55:19,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820227497] [2023-11-06 22:55:19,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820227497] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:55:19,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:55:19,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:55:19,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431881491] [2023-11-06 22:55:19,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:55:19,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:55:19,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:55:19,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:55:19,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:55:20,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 356 out of 787 [2023-11-06 22:55:20,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 180 transitions, 388 flow. Second operand has 6 states, 6 states have (on average 357.6666666666667) internal successors, (2146), 6 states have internal predecessors, (2146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:20,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:55:20,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 356 of 787 [2023-11-06 22:55:20,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand