./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-race.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff 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_c5530cbd-7402-4054-a2ef-aa21bebe7a0c/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5530cbd-7402-4054-a2ef-aa21bebe7a0c/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5530cbd-7402-4054-a2ef-aa21bebe7a0c/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5530cbd-7402-4054-a2ef-aa21bebe7a0c/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-race.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5530cbd-7402-4054-a2ef-aa21bebe7a0c/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5530cbd-7402-4054-a2ef-aa21bebe7a0c/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --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 963498115a8eca6e92c68ab7fa8168826446f05b9b398350c3ee0745adf1bb45 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:38:16,819 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:38:16,887 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5530cbd-7402-4054-a2ef-aa21bebe7a0c/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 07:38:16,893 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:38:16,894 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:38:16,921 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:38:16,922 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:38:16,923 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:38:16,923 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:38:16,924 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:38:16,925 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:38:16,926 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:38:16,926 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:38:16,927 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:38:16,928 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:38:16,928 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:38:16,929 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:38:16,930 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:38:16,930 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:38:16,931 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:38:16,931 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:38:16,932 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:38:16,933 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 07:38:16,933 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:38:16,934 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:38:16,934 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:38:16,935 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:38:16,935 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:38:16,936 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:38:16,937 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:38:16,937 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:38:16,938 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:38:16,938 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:38:16,938 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:38:16,939 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:38:16,939 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:38:16,939 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:38:16,939 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:38:16,940 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:38:16,940 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:38:16,940 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:38:16,941 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_c5530cbd-7402-4054-a2ef-aa21bebe7a0c/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5530cbd-7402-4054-a2ef-aa21bebe7a0c/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 963498115a8eca6e92c68ab7fa8168826446f05b9b398350c3ee0745adf1bb45 [2023-11-19 07:38:17,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:38:17,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:38:17,247 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:38:17,248 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:38:17,248 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:38:17,250 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5530cbd-7402-4054-a2ef-aa21bebe7a0c/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-race.i [2023-11-19 07:38:20,375 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:38:20,642 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:38:20,646 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5530cbd-7402-4054-a2ef-aa21bebe7a0c/sv-benchmarks/c/pthread-ext/11_fmaxsymopt-race.i [2023-11-19 07:38:20,667 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5530cbd-7402-4054-a2ef-aa21bebe7a0c/bin/uautomizer-verify-uCwYo4JHxu/data/4944e697c/5fe3c710f109438d9498c91c07d368ca/FLAG41bc09352 [2023-11-19 07:38:20,681 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5530cbd-7402-4054-a2ef-aa21bebe7a0c/bin/uautomizer-verify-uCwYo4JHxu/data/4944e697c/5fe3c710f109438d9498c91c07d368ca [2023-11-19 07:38:20,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:38:20,686 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:38:20,687 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:38:20,687 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:38:20,693 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:38:20,693 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:38:20" (1/1) ... [2023-11-19 07:38:20,694 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6679cea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:20, skipping insertion in model container [2023-11-19 07:38:20,695 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:38:20" (1/1) ... [2023-11-19 07:38:20,740 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:38:21,135 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:38:21,148 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:38:21,214 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:38:21,295 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:38:21,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:21 WrapperNode [2023-11-19 07:38:21,295 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:38:21,297 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:38:21,297 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:38:21,297 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:38:21,304 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:21" (1/1) ... [2023-11-19 07:38:21,341 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:21" (1/1) ... [2023-11-19 07:38:21,375 INFO L138 Inliner]: procedures = 171, calls = 25, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 110 [2023-11-19 07:38:21,377 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:38:21,378 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:38:21,378 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:38:21,379 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:38:21,388 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:21" (1/1) ... [2023-11-19 07:38:21,388 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:21" (1/1) ... [2023-11-19 07:38:21,408 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:21" (1/1) ... [2023-11-19 07:38:21,408 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:21" (1/1) ... [2023-11-19 07:38:21,416 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:21" (1/1) ... [2023-11-19 07:38:21,430 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:21" (1/1) ... [2023-11-19 07:38:21,433 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:21" (1/1) ... [2023-11-19 07:38:21,445 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:21" (1/1) ... [2023-11-19 07:38:21,448 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:38:21,449 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:38:21,449 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:38:21,450 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:38:21,451 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:21" (1/1) ... [2023-11-19 07:38:21,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:38:21,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5530cbd-7402-4054-a2ef-aa21bebe7a0c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:21,484 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5530cbd-7402-4054-a2ef-aa21bebe7a0c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:38:21,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5530cbd-7402-4054-a2ef-aa21bebe7a0c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:38:21,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:38:21,526 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-19 07:38:21,527 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-19 07:38:21,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:38:21,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:38:21,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:38:21,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:38:21,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:38:21,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:38:21,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:38:21,530 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:38:21,674 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:38:21,676 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:38:21,941 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:38:22,036 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:38:22,037 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:38:22,040 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:38:22 BoogieIcfgContainer [2023-11-19 07:38:22,041 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:38:22,049 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:38:22,050 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:38:22,053 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:38:22,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:38:20" (1/3) ... [2023-11-19 07:38:22,054 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63fd9d77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:38:22, skipping insertion in model container [2023-11-19 07:38:22,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:21" (2/3) ... [2023-11-19 07:38:22,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63fd9d77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:38:22, skipping insertion in model container [2023-11-19 07:38:22,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:38:22" (3/3) ... [2023-11-19 07:38:22,060 INFO L112 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt-race.i [2023-11-19 07:38:22,069 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:38:22,078 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:38:22,078 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-19 07:38:22,078 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:38:22,148 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:38:22,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 107 transitions, 218 flow [2023-11-19 07:38:22,274 INFO L124 PetriNetUnfolderBase]: 10/118 cut-off events. [2023-11-19 07:38:22,275 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:38:22,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 118 events. 10/118 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 176 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 86. Up to 4 conditions per place. [2023-11-19 07:38:22,282 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 107 transitions, 218 flow [2023-11-19 07:38:22,287 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 107 transitions, 218 flow [2023-11-19 07:38:22,291 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:38:22,302 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 107 transitions, 218 flow [2023-11-19 07:38:22,305 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 107 transitions, 218 flow [2023-11-19 07:38:22,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 107 transitions, 218 flow [2023-11-19 07:38:22,339 INFO L124 PetriNetUnfolderBase]: 10/118 cut-off events. [2023-11-19 07:38:22,339 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:38:22,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 118 events. 10/118 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 176 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 86. Up to 4 conditions per place. [2023-11-19 07:38:22,344 INFO L119 LiptonReduction]: Number of co-enabled transitions 2044 [2023-11-19 07:38:26,303 INFO L134 LiptonReduction]: Checked pairs total: 1770 [2023-11-19 07:38:26,304 INFO L136 LiptonReduction]: Total number of compositions: 124 [2023-11-19 07:38:26,319 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:38:26,326 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=LoopHeads, 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;@48c68a4a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:38:26,326 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-19 07:38:26,357 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:38:26,357 INFO L124 PetriNetUnfolderBase]: 1/9 cut-off events. [2023-11-19 07:38:26,358 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:38:26,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:26,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:38:26,359 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2023-11-19 07:38:26,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:26,365 INFO L85 PathProgramCache]: Analyzing trace with hash 532746397, now seen corresponding path program 1 times [2023-11-19 07:38:26,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:26,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860468370] [2023-11-19 07:38:26,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:26,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:26,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:26,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:26,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860468370] [2023-11-19 07:38:26,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860468370] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:26,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:26,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:38:26,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145275064] [2023-11-19 07:38:26,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:26,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:38:26,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:26,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:38:26,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:38:26,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 231 [2023-11-19 07:38:26,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 17 transitions, 38 flow. Second operand has 2 states, 2 states have (on average 95.5) internal successors, (191), 2 states have internal predecessors, (191), 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) [2023-11-19 07:38:26,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:26,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 231 [2023-11-19 07:38:26,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:26,723 INFO L124 PetriNetUnfolderBase]: 7/20 cut-off events. [2023-11-19 07:38:26,723 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:38:26,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 20 events. 7/20 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 29 event pairs, 4 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 30. Up to 19 conditions per place. [2023-11-19 07:38:26,725 INFO L140 encePairwiseOnDemand]: 222/231 looper letters, 7 selfloop transitions, 0 changer transitions 0/8 dead transitions. [2023-11-19 07:38:26,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 8 transitions, 34 flow [2023-11-19 07:38:26,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:38:26,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:38:26,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 202 transitions. [2023-11-19 07:38:26,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43722943722943725 [2023-11-19 07:38:26,742 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 202 transitions. [2023-11-19 07:38:26,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 202 transitions. [2023-11-19 07:38:26,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:26,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 202 transitions. [2023-11-19 07:38:26,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 101.0) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:26,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 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) [2023-11-19 07:38:26,757 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 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) [2023-11-19 07:38:26,759 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 38 flow. Second operand 2 states and 202 transitions. [2023-11-19 07:38:26,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 8 transitions, 34 flow [2023-11-19 07:38:26,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 8 transitions, 34 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:38:26,764 INFO L231 Difference]: Finished difference. Result has 11 places, 8 transitions, 20 flow [2023-11-19 07:38:26,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=20, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=20, PETRI_PLACES=11, PETRI_TRANSITIONS=8} [2023-11-19 07:38:26,769 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, -8 predicate places. [2023-11-19 07:38:26,770 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 8 transitions, 20 flow [2023-11-19 07:38:26,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 95.5) internal successors, (191), 2 states have internal predecessors, (191), 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) [2023-11-19 07:38:26,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:26,771 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 07:38:26,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:38:26,771 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2023-11-19 07:38:26,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:26,772 INFO L85 PathProgramCache]: Analyzing trace with hash -664812370, now seen corresponding path program 1 times [2023-11-19 07:38:26,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:26,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629158359] [2023-11-19 07:38:26,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:26,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:26,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:38:26,822 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:38:26,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:38:26,883 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:38:26,884 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:38:26,885 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-19 07:38:26,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2023-11-19 07:38:26,887 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2023-11-19 07:38:26,887 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2023-11-19 07:38:26,887 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2023-11-19 07:38:26,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2023-11-19 07:38:26,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2023-11-19 07:38:26,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2023-11-19 07:38:26,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2023-11-19 07:38:26,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2023-11-19 07:38:26,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2023-11-19 07:38:26,890 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2023-11-19 07:38:26,890 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2023-11-19 07:38:26,890 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2023-11-19 07:38:26,891 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2023-11-19 07:38:26,891 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2023-11-19 07:38:26,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2023-11-19 07:38:26,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:38:26,893 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 07:38:26,895 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:38:26,896 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:38:26,966 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:38:26,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 181 transitions, 372 flow [2023-11-19 07:38:27,063 INFO L124 PetriNetUnfolderBase]: 19/205 cut-off events. [2023-11-19 07:38:27,064 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:38:27,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 205 events. 19/205 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 533 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 159. Up to 6 conditions per place. [2023-11-19 07:38:27,071 INFO L82 GeneralOperation]: Start removeDead. Operand has 169 places, 181 transitions, 372 flow [2023-11-19 07:38:27,075 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 181 transitions, 372 flow [2023-11-19 07:38:27,075 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:38:27,075 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 169 places, 181 transitions, 372 flow [2023-11-19 07:38:27,076 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 169 places, 181 transitions, 372 flow [2023-11-19 07:38:27,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 181 transitions, 372 flow [2023-11-19 07:38:27,131 INFO L124 PetriNetUnfolderBase]: 19/205 cut-off events. [2023-11-19 07:38:27,133 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:38:27,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 205 events. 19/205 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 533 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 159. Up to 6 conditions per place. [2023-11-19 07:38:27,149 INFO L119 LiptonReduction]: Number of co-enabled transitions 14892 [2023-11-19 07:38:30,658 INFO L134 LiptonReduction]: Checked pairs total: 42246 [2023-11-19 07:38:30,659 INFO L136 LiptonReduction]: Total number of compositions: 157 [2023-11-19 07:38:30,666 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:38:30,667 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=LoopHeads, 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;@48c68a4a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:38:30,667 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-11-19 07:38:30,670 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:38:30,670 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-11-19 07:38:30,670 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:38:30,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:30,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:38:30,671 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-11-19 07:38:30,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:30,671 INFO L85 PathProgramCache]: Analyzing trace with hash 925559455, now seen corresponding path program 1 times [2023-11-19 07:38:30,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:30,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706330425] [2023-11-19 07:38:30,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:30,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:30,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:30,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:30,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:30,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706330425] [2023-11-19 07:38:30,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706330425] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:30,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:30,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:38:30,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727781397] [2023-11-19 07:38:30,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:30,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:38:30,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:30,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:38:30,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:38:30,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 338 [2023-11-19 07:38:30,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 66 transitions, 142 flow. Second operand has 2 states, 2 states have (on average 157.5) internal successors, (315), 2 states have internal predecessors, (315), 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) [2023-11-19 07:38:30,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:30,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 338 [2023-11-19 07:38:30,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:30,897 INFO L124 PetriNetUnfolderBase]: 218/611 cut-off events. [2023-11-19 07:38:30,897 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-11-19 07:38:30,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 986 conditions, 611 events. 218/611 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3915 event pairs, 152 based on Foata normal form. 60/558 useless extension candidates. Maximal degree in co-relation 191. Up to 349 conditions per place. [2023-11-19 07:38:30,903 INFO L140 encePairwiseOnDemand]: 325/338 looper letters, 20 selfloop transitions, 0 changer transitions 0/53 dead transitions. [2023-11-19 07:38:30,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 53 transitions, 156 flow [2023-11-19 07:38:30,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:38:30,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:38:30,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 343 transitions. [2023-11-19 07:38:30,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.507396449704142 [2023-11-19 07:38:30,907 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 343 transitions. [2023-11-19 07:38:30,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 343 transitions. [2023-11-19 07:38:30,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:30,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 343 transitions. [2023-11-19 07:38:30,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 171.5) internal successors, (343), 2 states have internal predecessors, (343), 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) [2023-11-19 07:38:30,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 338.0) internal successors, (1014), 3 states have internal predecessors, (1014), 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) [2023-11-19 07:38:30,915 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 338.0) internal successors, (1014), 3 states have internal predecessors, (1014), 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) [2023-11-19 07:38:30,915 INFO L175 Difference]: Start difference. First operand has 63 places, 66 transitions, 142 flow. Second operand 2 states and 343 transitions. [2023-11-19 07:38:30,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 53 transitions, 156 flow [2023-11-19 07:38:30,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 53 transitions, 156 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:38:30,917 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 116 flow [2023-11-19 07:38:30,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=116, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2023-11-19 07:38:30,919 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -8 predicate places. [2023-11-19 07:38:30,919 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 116 flow [2023-11-19 07:38:30,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 157.5) internal successors, (315), 2 states have internal predecessors, (315), 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) [2023-11-19 07:38:30,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:30,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:30,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:38:30,920 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-11-19 07:38:30,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:30,921 INFO L85 PathProgramCache]: Analyzing trace with hash 404431651, now seen corresponding path program 1 times [2023-11-19 07:38:30,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:30,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853730682] [2023-11-19 07:38:30,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:30,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:30,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:30,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:30,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853730682] [2023-11-19 07:38:30,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853730682] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:30,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:30,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:38:30,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321228936] [2023-11-19 07:38:30,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:30,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:38:30,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:30,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:38:30,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:38:31,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 338 [2023-11-19 07:38:31,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 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) [2023-11-19 07:38:31,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:31,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 338 [2023-11-19 07:38:31,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:31,202 INFO L124 PetriNetUnfolderBase]: 267/789 cut-off events. [2023-11-19 07:38:31,202 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2023-11-19 07:38:31,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1254 conditions, 789 events. 267/789 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 5234 event pairs, 127 based on Foata normal form. 0/660 useless extension candidates. Maximal degree in co-relation 1249. Up to 342 conditions per place. [2023-11-19 07:38:31,209 INFO L140 encePairwiseOnDemand]: 335/338 looper letters, 30 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-11-19 07:38:31,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 65 transitions, 209 flow [2023-11-19 07:38:31,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:38:31,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:38:31,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 477 transitions. [2023-11-19 07:38:31,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47041420118343197 [2023-11-19 07:38:31,213 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 477 transitions. [2023-11-19 07:38:31,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 477 transitions. [2023-11-19 07:38:31,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:31,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 477 transitions. [2023-11-19 07:38:31,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 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) [2023-11-19 07:38:31,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 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) [2023-11-19 07:38:31,222 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 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) [2023-11-19 07:38:31,222 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 116 flow. Second operand 3 states and 477 transitions. [2023-11-19 07:38:31,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 65 transitions, 209 flow [2023-11-19 07:38:31,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 65 transitions, 209 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:38:31,225 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 128 flow [2023-11-19 07:38:31,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2023-11-19 07:38:31,227 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -5 predicate places. [2023-11-19 07:38:31,227 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 128 flow [2023-11-19 07:38:31,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 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) [2023-11-19 07:38:31,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:31,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:31,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:38:31,229 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-11-19 07:38:31,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:31,229 INFO L85 PathProgramCache]: Analyzing trace with hash -191216265, now seen corresponding path program 1 times [2023-11-19 07:38:31,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:31,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580144162] [2023-11-19 07:38:31,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:31,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:31,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:31,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:31,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:31,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580144162] [2023-11-19 07:38:31,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580144162] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:31,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:31,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:38:31,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937920904] [2023-11-19 07:38:31,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:31,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:38:31,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:31,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:38:31,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:38:31,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 338 [2023-11-19 07:38:31,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 128 flow. Second operand has 6 states, 6 states have (on average 144.66666666666666) internal successors, (868), 6 states have internal predecessors, (868), 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) [2023-11-19 07:38:31,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:31,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 338 [2023-11-19 07:38:31,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:32,212 INFO L124 PetriNetUnfolderBase]: 481/1108 cut-off events. [2023-11-19 07:38:32,212 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2023-11-19 07:38:32,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2035 conditions, 1108 events. 481/1108 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 7264 event pairs, 185 based on Foata normal form. 36/1010 useless extension candidates. Maximal degree in co-relation 2028. Up to 418 conditions per place. [2023-11-19 07:38:32,223 INFO L140 encePairwiseOnDemand]: 332/338 looper letters, 59 selfloop transitions, 6 changer transitions 0/93 dead transitions. [2023-11-19 07:38:32,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 93 transitions, 356 flow [2023-11-19 07:38:32,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:38:32,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:38:32,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 923 transitions. [2023-11-19 07:38:32,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4551282051282051 [2023-11-19 07:38:32,228 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 923 transitions. [2023-11-19 07:38:32,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 923 transitions. [2023-11-19 07:38:32,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:32,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 923 transitions. [2023-11-19 07:38:32,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 153.83333333333334) internal successors, (923), 6 states have internal predecessors, (923), 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) [2023-11-19 07:38:32,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 338.0) internal successors, (2366), 7 states have internal predecessors, (2366), 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) [2023-11-19 07:38:32,240 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 338.0) internal successors, (2366), 7 states have internal predecessors, (2366), 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) [2023-11-19 07:38:32,240 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 128 flow. Second operand 6 states and 923 transitions. [2023-11-19 07:38:32,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 93 transitions, 356 flow [2023-11-19 07:38:32,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 93 transitions, 354 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:38:32,244 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 136 flow [2023-11-19 07:38:32,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=136, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2023-11-19 07:38:32,245 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -2 predicate places. [2023-11-19 07:38:32,245 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 136 flow [2023-11-19 07:38:32,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 144.66666666666666) internal successors, (868), 6 states have internal predecessors, (868), 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) [2023-11-19 07:38:32,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:32,247 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 07:38:32,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:38:32,247 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-11-19 07:38:32,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:32,248 INFO L85 PathProgramCache]: Analyzing trace with hash -27607650, now seen corresponding path program 1 times [2023-11-19 07:38:32,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:32,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633413517] [2023-11-19 07:38:32,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:32,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:32,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:38:32,296 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:38:32,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:38:32,311 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:38:32,311 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:38:32,312 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2023-11-19 07:38:32,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2023-11-19 07:38:32,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2023-11-19 07:38:32,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2023-11-19 07:38:32,313 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2023-11-19 07:38:32,313 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2023-11-19 07:38:32,313 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2023-11-19 07:38:32,313 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2023-11-19 07:38:32,314 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2023-11-19 07:38:32,314 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2023-11-19 07:38:32,314 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2023-11-19 07:38:32,314 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2023-11-19 07:38:32,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2023-11-19 07:38:32,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2023-11-19 07:38:32,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2023-11-19 07:38:32,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2023-11-19 07:38:32,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2023-11-19 07:38:32,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2023-11-19 07:38:32,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2023-11-19 07:38:32,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2023-11-19 07:38:32,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2023-11-19 07:38:32,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2023-11-19 07:38:32,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2023-11-19 07:38:32,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2023-11-19 07:38:32,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2023-11-19 07:38:32,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:38:32,318 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-19 07:38:32,319 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:38:32,319 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 07:38:32,365 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:38:32,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 237 places, 255 transitions, 528 flow [2023-11-19 07:38:32,428 INFO L124 PetriNetUnfolderBase]: 28/292 cut-off events. [2023-11-19 07:38:32,429 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 07:38:32,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 292 events. 28/292 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 964 event pairs, 0 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 232. Up to 8 conditions per place. [2023-11-19 07:38:32,432 INFO L82 GeneralOperation]: Start removeDead. Operand has 237 places, 255 transitions, 528 flow [2023-11-19 07:38:32,437 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 237 places, 255 transitions, 528 flow [2023-11-19 07:38:32,438 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:38:32,438 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 237 places, 255 transitions, 528 flow [2023-11-19 07:38:32,439 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 237 places, 255 transitions, 528 flow [2023-11-19 07:38:32,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 237 places, 255 transitions, 528 flow [2023-11-19 07:38:32,494 INFO L124 PetriNetUnfolderBase]: 28/292 cut-off events. [2023-11-19 07:38:32,494 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 07:38:32,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 292 events. 28/292 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 964 event pairs, 0 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 232. Up to 8 conditions per place. [2023-11-19 07:38:32,524 INFO L119 LiptonReduction]: Number of co-enabled transitions 38544 [2023-11-19 07:38:37,106 INFO L134 LiptonReduction]: Checked pairs total: 104457 [2023-11-19 07:38:37,107 INFO L136 LiptonReduction]: Total number of compositions: 216 [2023-11-19 07:38:37,109 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:38:37,110 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=LoopHeads, 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;@48c68a4a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:38:37,110 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2023-11-19 07:38:37,112 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:38:37,113 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-11-19 07:38:37,113 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:38:37,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:37,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:38:37,113 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-11-19 07:38:37,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:37,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1448457938, now seen corresponding path program 1 times [2023-11-19 07:38:37,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:37,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856009386] [2023-11-19 07:38:37,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:37,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:37,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:37,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:37,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:37,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856009386] [2023-11-19 07:38:37,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856009386] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:37,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:37,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:38:37,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212862231] [2023-11-19 07:38:37,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:37,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:38:37,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:37,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:38:37,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:38:37,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 471 [2023-11-19 07:38:37,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 96 transitions, 210 flow. Second operand has 2 states, 2 states have (on average 219.5) internal successors, (439), 2 states have internal predecessors, (439), 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) [2023-11-19 07:38:37,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:37,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 471 [2023-11-19 07:38:37,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:37,919 INFO L124 PetriNetUnfolderBase]: 2909/6034 cut-off events. [2023-11-19 07:38:37,919 INFO L125 PetriNetUnfolderBase]: For 487/487 co-relation queries the response was YES. [2023-11-19 07:38:37,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10241 conditions, 6034 events. 2909/6034 cut-off events. For 487/487 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 51221 event pairs, 2119 based on Foata normal form. 738/5774 useless extension candidates. Maximal degree in co-relation 990. Up to 3952 conditions per place. [2023-11-19 07:38:37,977 INFO L140 encePairwiseOnDemand]: 452/471 looper letters, 29 selfloop transitions, 0 changer transitions 0/77 dead transitions. [2023-11-19 07:38:37,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 77 transitions, 230 flow [2023-11-19 07:38:37,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:38:37,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:38:37,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 482 transitions. [2023-11-19 07:38:37,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5116772823779193 [2023-11-19 07:38:37,981 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 482 transitions. [2023-11-19 07:38:37,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 482 transitions. [2023-11-19 07:38:37,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:37,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 482 transitions. [2023-11-19 07:38:37,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 241.0) internal successors, (482), 2 states have internal predecessors, (482), 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) [2023-11-19 07:38:37,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 471.0) internal successors, (1413), 3 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:37,988 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 471.0) internal successors, (1413), 3 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:37,989 INFO L175 Difference]: Start difference. First operand has 91 places, 96 transitions, 210 flow. Second operand 2 states and 482 transitions. [2023-11-19 07:38:37,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 77 transitions, 230 flow [2023-11-19 07:38:37,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 77 transitions, 228 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-19 07:38:37,993 INFO L231 Difference]: Finished difference. Result has 79 places, 77 transitions, 170 flow [2023-11-19 07:38:37,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=471, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=170, PETRI_PLACES=79, PETRI_TRANSITIONS=77} [2023-11-19 07:38:37,994 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -12 predicate places. [2023-11-19 07:38:37,994 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 77 transitions, 170 flow [2023-11-19 07:38:37,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 219.5) internal successors, (439), 2 states have internal predecessors, (439), 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) [2023-11-19 07:38:37,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:37,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:37,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:38:37,995 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-11-19 07:38:37,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:37,996 INFO L85 PathProgramCache]: Analyzing trace with hash 398712405, now seen corresponding path program 1 times [2023-11-19 07:38:37,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:37,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305274226] [2023-11-19 07:38:37,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:37,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:38,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:38,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:38,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:38,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305274226] [2023-11-19 07:38:38,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305274226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:38,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:38,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:38:38,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263139268] [2023-11-19 07:38:38,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:38,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:38:38,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:38,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:38:38,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:38:38,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 471 [2023-11-19 07:38:38,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 77 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 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) [2023-11-19 07:38:38,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:38,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 471 [2023-11-19 07:38:38,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:39,071 INFO L124 PetriNetUnfolderBase]: 3675/7683 cut-off events. [2023-11-19 07:38:39,071 INFO L125 PetriNetUnfolderBase]: For 276/276 co-relation queries the response was YES. [2023-11-19 07:38:39,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12936 conditions, 7683 events. 3675/7683 cut-off events. For 276/276 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 66344 event pairs, 2111 based on Foata normal form. 0/6313 useless extension candidates. Maximal degree in co-relation 12930. Up to 3954 conditions per place. [2023-11-19 07:38:39,150 INFO L140 encePairwiseOnDemand]: 468/471 looper letters, 48 selfloop transitions, 2 changer transitions 0/98 dead transitions. [2023-11-19 07:38:39,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 98 transitions, 322 flow [2023-11-19 07:38:39,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:38:39,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:38:39,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 681 transitions. [2023-11-19 07:38:39,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4819532908704883 [2023-11-19 07:38:39,155 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 681 transitions. [2023-11-19 07:38:39,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 681 transitions. [2023-11-19 07:38:39,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:39,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 681 transitions. [2023-11-19 07:38:39,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:39,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 471.0) internal successors, (1884), 4 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:39,166 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 471.0) internal successors, (1884), 4 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:39,167 INFO L175 Difference]: Start difference. First operand has 79 places, 77 transitions, 170 flow. Second operand 3 states and 681 transitions. [2023-11-19 07:38:39,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 98 transitions, 322 flow [2023-11-19 07:38:39,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 98 transitions, 322 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:38:39,171 INFO L231 Difference]: Finished difference. Result has 82 places, 78 transitions, 182 flow [2023-11-19 07:38:39,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=471, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=82, PETRI_TRANSITIONS=78} [2023-11-19 07:38:39,173 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -9 predicate places. [2023-11-19 07:38:39,173 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 78 transitions, 182 flow [2023-11-19 07:38:39,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 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) [2023-11-19 07:38:39,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:39,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:39,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:38:39,175 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-11-19 07:38:39,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:39,176 INFO L85 PathProgramCache]: Analyzing trace with hash 338323424, now seen corresponding path program 1 times [2023-11-19 07:38:39,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:39,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237803440] [2023-11-19 07:38:39,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:39,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:39,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:39,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:39,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:39,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237803440] [2023-11-19 07:38:39,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237803440] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:39,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:39,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:38:39,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492466972] [2023-11-19 07:38:39,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:39,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:38:39,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:39,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:38:39,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:38:39,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 471 [2023-11-19 07:38:39,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 78 transitions, 182 flow. Second operand has 6 states, 6 states have (on average 206.66666666666666) internal successors, (1240), 6 states have internal predecessors, (1240), 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) [2023-11-19 07:38:39,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:39,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 471 [2023-11-19 07:38:39,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:41,445 INFO L124 PetriNetUnfolderBase]: 6693/11614 cut-off events. [2023-11-19 07:38:41,446 INFO L125 PetriNetUnfolderBase]: For 1056/1056 co-relation queries the response was YES. [2023-11-19 07:38:41,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21926 conditions, 11614 events. 6693/11614 cut-off events. For 1056/1056 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 91910 event pairs, 2655 based on Foata normal form. 292/10361 useless extension candidates. Maximal degree in co-relation 21918. Up to 4918 conditions per place. [2023-11-19 07:38:41,529 INFO L140 encePairwiseOnDemand]: 465/471 looper letters, 104 selfloop transitions, 6 changer transitions 0/153 dead transitions. [2023-11-19 07:38:41,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 153 transitions, 592 flow [2023-11-19 07:38:41,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:38:41,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:38:41,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1340 transitions. [2023-11-19 07:38:41,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47416843595187547 [2023-11-19 07:38:41,535 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1340 transitions. [2023-11-19 07:38:41,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1340 transitions. [2023-11-19 07:38:41,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:41,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1340 transitions. [2023-11-19 07:38:41,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 223.33333333333334) internal successors, (1340), 6 states have internal predecessors, (1340), 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) [2023-11-19 07:38:41,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 471.0) internal successors, (3297), 7 states have internal predecessors, (3297), 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) [2023-11-19 07:38:41,549 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 471.0) internal successors, (3297), 7 states have internal predecessors, (3297), 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) [2023-11-19 07:38:41,549 INFO L175 Difference]: Start difference. First operand has 82 places, 78 transitions, 182 flow. Second operand 6 states and 1340 transitions. [2023-11-19 07:38:41,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 153 transitions, 592 flow [2023-11-19 07:38:41,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 153 transitions, 590 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:38:41,557 INFO L231 Difference]: Finished difference. Result has 85 places, 77 transitions, 190 flow [2023-11-19 07:38:41,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=471, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=190, PETRI_PLACES=85, PETRI_TRANSITIONS=77} [2023-11-19 07:38:41,558 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -6 predicate places. [2023-11-19 07:38:41,559 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 77 transitions, 190 flow [2023-11-19 07:38:41,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 206.66666666666666) internal successors, (1240), 6 states have internal predecessors, (1240), 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) [2023-11-19 07:38:41,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:41,560 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:41,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:38:41,560 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-11-19 07:38:41,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:41,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1782359090, now seen corresponding path program 1 times [2023-11-19 07:38:41,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:41,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299640555] [2023-11-19 07:38:41,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:41,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:41,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:41,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:38:41,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:41,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299640555] [2023-11-19 07:38:41,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299640555] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:41,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:41,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:38:41,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294380739] [2023-11-19 07:38:41,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:41,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:38:41,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:41,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:38:41,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:38:41,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 471 [2023-11-19 07:38:41,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 77 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 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) [2023-11-19 07:38:41,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:41,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 471 [2023-11-19 07:38:41,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:43,001 INFO L124 PetriNetUnfolderBase]: 4462/9742 cut-off events. [2023-11-19 07:38:43,002 INFO L125 PetriNetUnfolderBase]: For 1581/1581 co-relation queries the response was YES. [2023-11-19 07:38:43,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17128 conditions, 9742 events. 4462/9742 cut-off events. For 1581/1581 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 88352 event pairs, 2594 based on Foata normal form. 0/8244 useless extension candidates. Maximal degree in co-relation 17120. Up to 4801 conditions per place. [2023-11-19 07:38:43,069 INFO L140 encePairwiseOnDemand]: 468/471 looper letters, 49 selfloop transitions, 2 changer transitions 0/98 dead transitions. [2023-11-19 07:38:43,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 98 transitions, 351 flow [2023-11-19 07:38:43,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:38:43,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:38:43,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 680 transitions. [2023-11-19 07:38:43,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48124557678697805 [2023-11-19 07:38:43,072 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 680 transitions. [2023-11-19 07:38:43,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 680 transitions. [2023-11-19 07:38:43,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:43,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 680 transitions. [2023-11-19 07:38:43,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 226.66666666666666) internal successors, (680), 3 states have internal predecessors, (680), 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) [2023-11-19 07:38:43,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 471.0) internal successors, (1884), 4 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:43,079 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 471.0) internal successors, (1884), 4 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:43,079 INFO L175 Difference]: Start difference. First operand has 85 places, 77 transitions, 190 flow. Second operand 3 states and 680 transitions. [2023-11-19 07:38:43,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 98 transitions, 351 flow [2023-11-19 07:38:43,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 98 transitions, 335 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-19 07:38:43,084 INFO L231 Difference]: Finished difference. Result has 83 places, 78 transitions, 190 flow [2023-11-19 07:38:43,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=471, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=83, PETRI_TRANSITIONS=78} [2023-11-19 07:38:43,087 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -8 predicate places. [2023-11-19 07:38:43,087 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 78 transitions, 190 flow [2023-11-19 07:38:43,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 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) [2023-11-19 07:38:43,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:43,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:43,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:38:43,088 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-11-19 07:38:43,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:43,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1284695910, now seen corresponding path program 1 times [2023-11-19 07:38:43,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:43,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564252362] [2023-11-19 07:38:43,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:43,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:43,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:38:43,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:43,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564252362] [2023-11-19 07:38:43,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564252362] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:43,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:43,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:38:43,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6780587] [2023-11-19 07:38:43,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:43,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:38:43,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:43,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:38:43,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:38:43,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 471 [2023-11-19 07:38:43,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 78 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 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) [2023-11-19 07:38:43,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:43,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 471 [2023-11-19 07:38:43,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:47,037 INFO L124 PetriNetUnfolderBase]: 25179/38524 cut-off events. [2023-11-19 07:38:47,037 INFO L125 PetriNetUnfolderBase]: For 6209/6209 co-relation queries the response was YES. [2023-11-19 07:38:47,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79525 conditions, 38524 events. 25179/38524 cut-off events. For 6209/6209 co-relation queries the response was YES. Maximal size of possible extension queue 1393. Compared 292666 event pairs, 9295 based on Foata normal form. 0/35858 useless extension candidates. Maximal degree in co-relation 79516. Up to 21654 conditions per place. [2023-11-19 07:38:47,336 INFO L140 encePairwiseOnDemand]: 450/471 looper letters, 79 selfloop transitions, 15 changer transitions 0/121 dead transitions. [2023-11-19 07:38:47,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 121 transitions, 492 flow [2023-11-19 07:38:47,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:38:47,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:38:47,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 684 transitions. [2023-11-19 07:38:47,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4840764331210191 [2023-11-19 07:38:47,340 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 684 transitions. [2023-11-19 07:38:47,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 684 transitions. [2023-11-19 07:38:47,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:47,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 684 transitions. [2023-11-19 07:38:47,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 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) [2023-11-19 07:38:47,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 471.0) internal successors, (1884), 4 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:47,348 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 471.0) internal successors, (1884), 4 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:47,349 INFO L175 Difference]: Start difference. First operand has 83 places, 78 transitions, 190 flow. Second operand 3 states and 684 transitions. [2023-11-19 07:38:47,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 121 transitions, 492 flow [2023-11-19 07:38:47,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 121 transitions, 488 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:38:47,357 INFO L231 Difference]: Finished difference. Result has 86 places, 93 transitions, 320 flow [2023-11-19 07:38:47,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=471, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=320, PETRI_PLACES=86, PETRI_TRANSITIONS=93} [2023-11-19 07:38:47,358 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -5 predicate places. [2023-11-19 07:38:47,358 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 93 transitions, 320 flow [2023-11-19 07:38:47,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 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) [2023-11-19 07:38:47,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:47,359 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:47,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:38:47,359 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-11-19 07:38:47,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:47,360 INFO L85 PathProgramCache]: Analyzing trace with hash 782257902, now seen corresponding path program 1 times [2023-11-19 07:38:47,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:47,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102767100] [2023-11-19 07:38:47,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:47,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:47,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:47,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:38:47,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:47,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102767100] [2023-11-19 07:38:47,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102767100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:47,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:47,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:38:47,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294334039] [2023-11-19 07:38:47,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:47,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:38:47,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:47,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:38:47,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:38:47,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 471 [2023-11-19 07:38:47,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 93 transitions, 320 flow. Second operand has 6 states, 6 states have (on average 206.83333333333334) internal successors, (1241), 6 states have internal predecessors, (1241), 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) [2023-11-19 07:38:47,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:47,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 471 [2023-11-19 07:38:47,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:51,426 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1429] L719-1-->thr1EXIT: Formula: (and (= |v_thr1Thread3of3ForFork0_#res#1.base_9| 0) (<= |v_thr1Thread3of3ForFork0_findMax_~my_max~0#1_72| v_~max~0_127) (= |v_thr1Thread3of3ForFork0_#res#1.offset_9| 0)) InVars {thr1Thread3of3ForFork0_findMax_~my_max~0#1=|v_thr1Thread3of3ForFork0_findMax_~my_max~0#1_72|, ~max~0=v_~max~0_127} OutVars{thr1Thread3of3ForFork0_findMax_#t~nondet7#1=|v_thr1Thread3of3ForFork0_findMax_#t~nondet7#1_35|, thr1Thread3of3ForFork0_findMax_~i~0#1=|v_thr1Thread3of3ForFork0_findMax_~i~0#1_73|, thr1Thread3of3ForFork0_#res#1.offset=|v_thr1Thread3of3ForFork0_#res#1.offset_9|, thr1Thread3of3ForFork0_findMax_#in~offset#1=|v_thr1Thread3of3ForFork0_findMax_#in~offset#1_19|, thr1Thread3of3ForFork0_findMax_~offset#1=|v_thr1Thread3of3ForFork0_findMax_~offset#1_39|, thr1Thread3of3ForFork0_findMax_#t~post5#1=|v_thr1Thread3of3ForFork0_findMax_#t~post5#1_35|, ~max~0=v_~max~0_127, thr1Thread3of3ForFork0_#res#1.base=|v_thr1Thread3of3ForFork0_#res#1.base_9|, thr1Thread3of3ForFork0_findMax_~e~0#1=|v_thr1Thread3of3ForFork0_findMax_~e~0#1_55|, thr1Thread3of3ForFork0_findMax_#t~mem6#1=|v_thr1Thread3of3ForFork0_findMax_#t~mem6#1_41|} AuxVars[] AssignedVars[thr1Thread3of3ForFork0_findMax_#t~nondet7#1, thr1Thread3of3ForFork0_findMax_~i~0#1, thr1Thread3of3ForFork0_#res#1.offset, thr1Thread3of3ForFork0_findMax_#in~offset#1, thr1Thread3of3ForFork0_findMax_~my_max~0#1, thr1Thread3of3ForFork0_findMax_~offset#1, thr1Thread3of3ForFork0_findMax_#t~post5#1, thr1Thread3of3ForFork0_#res#1.base, thr1Thread3of3ForFork0_findMax_~e~0#1, thr1Thread3of3ForFork0_findMax_#t~mem6#1][111], [111#L718true, Black: 257#(= |thr1Thread2of3ForFork0_findMax_~i~0#1| |thr1Thread2of3ForFork0_findMax_~offset#1|), 240#true, 262#(= |#race~max~0| 0), Black: 260#true, thr1Thread1of3ForFork0InUse, 266#true, thr1Thread2of3ForFork0InUse, thr1Thread3of3ForFork0InUse, 15#thr1EXITtrue, 181#L718true, Black: 245#(= |thr1Thread1of3ForFork0_findMax_~i~0#1| |thr1Thread1of3ForFork0_findMax_~offset#1|), 199#L729-5true]) [2023-11-19 07:38:51,426 INFO L294 olderBase$Statistics]: this new event has 47 ancestors and is cut-off event [2023-11-19 07:38:51,426 INFO L297 olderBase$Statistics]: existing Event has 47 ancestors and is cut-off event [2023-11-19 07:38:51,427 INFO L297 olderBase$Statistics]: existing Event has 44 ancestors and is cut-off event [2023-11-19 07:38:51,427 INFO L297 olderBase$Statistics]: existing Event has 47 ancestors and is cut-off event [2023-11-19 07:38:51,760 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1429] L719-1-->thr1EXIT: Formula: (and (= |v_thr1Thread3of3ForFork0_#res#1.base_9| 0) (<= |v_thr1Thread3of3ForFork0_findMax_~my_max~0#1_72| v_~max~0_127) (= |v_thr1Thread3of3ForFork0_#res#1.offset_9| 0)) InVars {thr1Thread3of3ForFork0_findMax_~my_max~0#1=|v_thr1Thread3of3ForFork0_findMax_~my_max~0#1_72|, ~max~0=v_~max~0_127} OutVars{thr1Thread3of3ForFork0_findMax_#t~nondet7#1=|v_thr1Thread3of3ForFork0_findMax_#t~nondet7#1_35|, thr1Thread3of3ForFork0_findMax_~i~0#1=|v_thr1Thread3of3ForFork0_findMax_~i~0#1_73|, thr1Thread3of3ForFork0_#res#1.offset=|v_thr1Thread3of3ForFork0_#res#1.offset_9|, thr1Thread3of3ForFork0_findMax_#in~offset#1=|v_thr1Thread3of3ForFork0_findMax_#in~offset#1_19|, thr1Thread3of3ForFork0_findMax_~offset#1=|v_thr1Thread3of3ForFork0_findMax_~offset#1_39|, thr1Thread3of3ForFork0_findMax_#t~post5#1=|v_thr1Thread3of3ForFork0_findMax_#t~post5#1_35|, ~max~0=v_~max~0_127, thr1Thread3of3ForFork0_#res#1.base=|v_thr1Thread3of3ForFork0_#res#1.base_9|, thr1Thread3of3ForFork0_findMax_~e~0#1=|v_thr1Thread3of3ForFork0_findMax_~e~0#1_55|, thr1Thread3of3ForFork0_findMax_#t~mem6#1=|v_thr1Thread3of3ForFork0_findMax_#t~mem6#1_41|} AuxVars[] AssignedVars[thr1Thread3of3ForFork0_findMax_#t~nondet7#1, thr1Thread3of3ForFork0_findMax_~i~0#1, thr1Thread3of3ForFork0_#res#1.offset, thr1Thread3of3ForFork0_findMax_#in~offset#1, thr1Thread3of3ForFork0_findMax_~my_max~0#1, thr1Thread3of3ForFork0_findMax_~offset#1, thr1Thread3of3ForFork0_findMax_#t~post5#1, thr1Thread3of3ForFork0_#res#1.base, thr1Thread3of3ForFork0_findMax_~e~0#1, thr1Thread3of3ForFork0_findMax_#t~mem6#1][111], [111#L718true, Black: 257#(= |thr1Thread2of3ForFork0_findMax_~i~0#1| |thr1Thread2of3ForFork0_findMax_~offset#1|), 240#true, 262#(= |#race~max~0| 0), Black: 260#true, thr1Thread1of3ForFork0InUse, 266#true, thr1Thread2of3ForFork0InUse, thr1Thread3of3ForFork0InUse, 183#L729-4true, 15#thr1EXITtrue, 181#L718true, Black: 245#(= |thr1Thread1of3ForFork0_findMax_~i~0#1| |thr1Thread1of3ForFork0_findMax_~offset#1|)]) [2023-11-19 07:38:51,760 INFO L294 olderBase$Statistics]: this new event has 50 ancestors and is cut-off event [2023-11-19 07:38:51,760 INFO L297 olderBase$Statistics]: existing Event has 50 ancestors and is cut-off event [2023-11-19 07:38:51,761 INFO L297 olderBase$Statistics]: existing Event has 47 ancestors and is cut-off event [2023-11-19 07:38:51,761 INFO L297 olderBase$Statistics]: existing Event has 50 ancestors and is cut-off event [2023-11-19 07:38:51,811 INFO L124 PetriNetUnfolderBase]: 20305/34418 cut-off events. [2023-11-19 07:38:51,811 INFO L125 PetriNetUnfolderBase]: For 8322/8428 co-relation queries the response was YES. [2023-11-19 07:38:51,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74656 conditions, 34418 events. 20305/34418 cut-off events. For 8322/8428 co-relation queries the response was YES. Maximal size of possible extension queue 1357. Compared 302665 event pairs, 9609 based on Foata normal form. 620/32002 useless extension candidates. Maximal degree in co-relation 74646. Up to 16054 conditions per place. [2023-11-19 07:38:52,084 INFO L140 encePairwiseOnDemand]: 465/471 looper letters, 110 selfloop transitions, 6 changer transitions 0/172 dead transitions. [2023-11-19 07:38:52,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 172 transitions, 786 flow [2023-11-19 07:38:52,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:38:52,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:38:52,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1336 transitions. [2023-11-19 07:38:52,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4727530077848549 [2023-11-19 07:38:52,090 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1336 transitions. [2023-11-19 07:38:52,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1336 transitions. [2023-11-19 07:38:52,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:52,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1336 transitions. [2023-11-19 07:38:52,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 222.66666666666666) internal successors, (1336), 6 states have internal predecessors, (1336), 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) [2023-11-19 07:38:52,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 471.0) internal successors, (3297), 7 states have internal predecessors, (3297), 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) [2023-11-19 07:38:52,101 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 471.0) internal successors, (3297), 7 states have internal predecessors, (3297), 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) [2023-11-19 07:38:52,102 INFO L175 Difference]: Start difference. First operand has 86 places, 93 transitions, 320 flow. Second operand 6 states and 1336 transitions. [2023-11-19 07:38:52,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 172 transitions, 786 flow [2023-11-19 07:38:52,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 172 transitions, 748 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:38:52,161 INFO L231 Difference]: Finished difference. Result has 88 places, 92 transitions, 300 flow [2023-11-19 07:38:52,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=471, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=300, PETRI_PLACES=88, PETRI_TRANSITIONS=92} [2023-11-19 07:38:52,164 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -3 predicate places. [2023-11-19 07:38:52,164 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 92 transitions, 300 flow [2023-11-19 07:38:52,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 206.83333333333334) internal successors, (1241), 6 states have internal predecessors, (1241), 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) [2023-11-19 07:38:52,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:52,165 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-11-19 07:38:52,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:38:52,165 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-11-19 07:38:52,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:52,166 INFO L85 PathProgramCache]: Analyzing trace with hash -2015294581, now seen corresponding path program 1 times [2023-11-19 07:38:52,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:52,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672848450] [2023-11-19 07:38:52,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:52,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:52,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:38:52,184 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:38:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:38:52,210 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:38:52,211 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:38:52,211 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2023-11-19 07:38:52,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (31 of 33 remaining) [2023-11-19 07:38:52,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (30 of 33 remaining) [2023-11-19 07:38:52,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (29 of 33 remaining) [2023-11-19 07:38:52,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (28 of 33 remaining) [2023-11-19 07:38:52,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (27 of 33 remaining) [2023-11-19 07:38:52,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (26 of 33 remaining) [2023-11-19 07:38:52,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (25 of 33 remaining) [2023-11-19 07:38:52,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (24 of 33 remaining) [2023-11-19 07:38:52,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (23 of 33 remaining) [2023-11-19 07:38:52,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 33 remaining) [2023-11-19 07:38:52,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (21 of 33 remaining) [2023-11-19 07:38:52,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (20 of 33 remaining) [2023-11-19 07:38:52,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (19 of 33 remaining) [2023-11-19 07:38:52,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (18 of 33 remaining) [2023-11-19 07:38:52,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (17 of 33 remaining) [2023-11-19 07:38:52,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 33 remaining) [2023-11-19 07:38:52,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 33 remaining) [2023-11-19 07:38:52,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 33 remaining) [2023-11-19 07:38:52,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (13 of 33 remaining) [2023-11-19 07:38:52,215 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (12 of 33 remaining) [2023-11-19 07:38:52,215 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (11 of 33 remaining) [2023-11-19 07:38:52,215 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 33 remaining) [2023-11-19 07:38:52,215 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (9 of 33 remaining) [2023-11-19 07:38:52,215 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (8 of 33 remaining) [2023-11-19 07:38:52,215 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 33 remaining) [2023-11-19 07:38:52,216 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 33 remaining) [2023-11-19 07:38:52,216 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (5 of 33 remaining) [2023-11-19 07:38:52,216 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (4 of 33 remaining) [2023-11-19 07:38:52,216 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (3 of 33 remaining) [2023-11-19 07:38:52,216 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 33 remaining) [2023-11-19 07:38:52,217 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (1 of 33 remaining) [2023-11-19 07:38:52,217 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 33 remaining) [2023-11-19 07:38:52,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:38:52,218 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:52,219 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:38:52,219 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-19 07:38:52,264 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:38:52,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 305 places, 329 transitions, 686 flow [2023-11-19 07:38:52,342 INFO L124 PetriNetUnfolderBase]: 37/379 cut-off events. [2023-11-19 07:38:52,342 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-19 07:38:52,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398 conditions, 379 events. 37/379 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1436 event pairs, 0 based on Foata normal form. 0/305 useless extension candidates. Maximal degree in co-relation 305. Up to 10 conditions per place. [2023-11-19 07:38:52,347 INFO L82 GeneralOperation]: Start removeDead. Operand has 305 places, 329 transitions, 686 flow [2023-11-19 07:38:52,354 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 305 places, 329 transitions, 686 flow [2023-11-19 07:38:52,355 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:38:52,355 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 305 places, 329 transitions, 686 flow [2023-11-19 07:38:52,355 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 305 places, 329 transitions, 686 flow [2023-11-19 07:38:52,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 305 places, 329 transitions, 686 flow [2023-11-19 07:38:52,426 INFO L124 PetriNetUnfolderBase]: 37/379 cut-off events. [2023-11-19 07:38:52,427 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-19 07:38:52,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398 conditions, 379 events. 37/379 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1436 event pairs, 0 based on Foata normal form. 0/305 useless extension candidates. Maximal degree in co-relation 305. Up to 10 conditions per place. [2023-11-19 07:38:52,455 INFO L119 LiptonReduction]: Number of co-enabled transitions 73000 [2023-11-19 07:38:57,898 INFO L134 LiptonReduction]: Checked pairs total: 224494 [2023-11-19 07:38:57,898 INFO L136 LiptonReduction]: Total number of compositions: 286 [2023-11-19 07:38:57,900 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:38:57,901 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=LoopHeads, 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;@48c68a4a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:38:57,901 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2023-11-19 07:38:57,903 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:38:57,903 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-19 07:38:57,903 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:38:57,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:57,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:38:57,904 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2023-11-19 07:38:57,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:57,904 INFO L85 PathProgramCache]: Analyzing trace with hash 2101318072, now seen corresponding path program 1 times [2023-11-19 07:38:57,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:57,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412128183] [2023-11-19 07:38:57,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:57,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:57,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:57,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:57,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:57,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412128183] [2023-11-19 07:38:57,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412128183] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:57,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:57,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:38:57,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990034216] [2023-11-19 07:38:57,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:57,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:38:57,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:57,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:38:57,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:38:57,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 615 [2023-11-19 07:38:57,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 126 transitions, 280 flow. Second operand has 2 states, 2 states have (on average 281.5) internal successors, (563), 2 states have internal predecessors, (563), 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) [2023-11-19 07:38:57,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:57,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 615 [2023-11-19 07:38:57,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:03,606 INFO L124 PetriNetUnfolderBase]: 32645/57633 cut-off events. [2023-11-19 07:39:03,606 INFO L125 PetriNetUnfolderBase]: For 7056/7056 co-relation queries the response was YES. [2023-11-19 07:39:03,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101153 conditions, 57633 events. 32645/57633 cut-off events. For 7056/7056 co-relation queries the response was YES. Maximal size of possible extension queue 2631. Compared 570283 event pairs, 24239 based on Foata normal form. 7978/56471 useless extension candidates. Maximal degree in co-relation 10301. Up to 40984 conditions per place. [2023-11-19 07:39:04,141 INFO L140 encePairwiseOnDemand]: 590/615 looper letters, 38 selfloop transitions, 0 changer transitions 0/101 dead transitions. [2023-11-19 07:39:04,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 101 transitions, 306 flow [2023-11-19 07:39:04,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:39:04,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:39:04,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 621 transitions. [2023-11-19 07:39:04,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5048780487804878 [2023-11-19 07:39:04,146 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 621 transitions. [2023-11-19 07:39:04,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 621 transitions. [2023-11-19 07:39:04,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:04,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 621 transitions. [2023-11-19 07:39:04,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 310.5) internal successors, (621), 2 states have internal predecessors, (621), 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) [2023-11-19 07:39:04,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 615.0) internal successors, (1845), 3 states have internal predecessors, (1845), 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) [2023-11-19 07:39:04,155 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 615.0) internal successors, (1845), 3 states have internal predecessors, (1845), 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) [2023-11-19 07:39:04,155 INFO L175 Difference]: Start difference. First operand has 119 places, 126 transitions, 280 flow. Second operand 2 states and 621 transitions. [2023-11-19 07:39:04,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 101 transitions, 306 flow [2023-11-19 07:39:04,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 101 transitions, 300 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-11-19 07:39:04,170 INFO L231 Difference]: Finished difference. Result has 103 places, 101 transitions, 224 flow [2023-11-19 07:39:04,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=615, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=224, PETRI_PLACES=103, PETRI_TRANSITIONS=101} [2023-11-19 07:39:04,171 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -16 predicate places. [2023-11-19 07:39:04,172 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 101 transitions, 224 flow [2023-11-19 07:39:04,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 281.5) internal successors, (563), 2 states have internal predecessors, (563), 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) [2023-11-19 07:39:04,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:04,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:04,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:39:04,173 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2023-11-19 07:39:04,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:04,174 INFO L85 PathProgramCache]: Analyzing trace with hash 732095739, now seen corresponding path program 1 times [2023-11-19 07:39:04,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:04,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002948686] [2023-11-19 07:39:04,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:04,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:04,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:39:04,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:04,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002948686] [2023-11-19 07:39:04,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002948686] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:04,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:04,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:39:04,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985827810] [2023-11-19 07:39:04,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:04,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:39:04,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:04,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:39:04,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:39:04,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 615 [2023-11-19 07:39:04,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 101 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 273.6666666666667) internal successors, (821), 3 states have internal predecessors, (821), 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) [2023-11-19 07:39:04,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:04,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 615 [2023-11-19 07:39:04,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand