./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/14_spin2003-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0e0057cc 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_a6e1f4d1-d2cf-4b61-a335-0c1de47ea45a/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e1f4d1-d2cf-4b61-a335-0c1de47ea45a/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e1f4d1-d2cf-4b61-a335-0c1de47ea45a/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e1f4d1-d2cf-4b61-a335-0c1de47ea45a/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/14_spin2003-pthread.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e1f4d1-d2cf-4b61-a335-0c1de47ea45a/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e1f4d1-d2cf-4b61-a335-0c1de47ea45a/bin/uautomizer-verify-BQ2R08f2Ya --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 f42d37a05f48e892c5a546503245e38980b0f6e32be2f52b67eb1c08983f5b1e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:10:28,807 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:10:28,869 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e1f4d1-d2cf-4b61-a335-0c1de47ea45a/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-29 00:10:28,873 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:10:28,874 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:10:28,895 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:10:28,896 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:10:28,896 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:10:28,897 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:10:28,898 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:10:28,899 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:10:28,899 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:10:28,899 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:10:28,900 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:10:28,901 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:10:28,901 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:10:28,902 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:10:28,902 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:10:28,903 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:10:28,903 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:10:28,903 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:10:28,904 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:10:28,905 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-29 00:10:28,905 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 00:10:28,906 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:10:28,906 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:10:28,917 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:10:28,917 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:10:28,918 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:10:28,918 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:10:28,919 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:10:28,919 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:10:28,919 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:10:28,919 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:10:28,920 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:10:28,920 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:10:28,920 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:10:28,920 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:10:28,920 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:10:28,921 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:10:28,921 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:10:28,921 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_a6e1f4d1-d2cf-4b61-a335-0c1de47ea45a/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e1f4d1-d2cf-4b61-a335-0c1de47ea45a/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f42d37a05f48e892c5a546503245e38980b0f6e32be2f52b67eb1c08983f5b1e [2023-11-29 00:10:29,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:10:29,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:10:29,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:10:29,157 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:10:29,161 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:10:29,162 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e1f4d1-d2cf-4b61-a335-0c1de47ea45a/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread-ext/14_spin2003-pthread.i [2023-11-29 00:10:31,798 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:10:32,051 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:10:32,051 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e1f4d1-d2cf-4b61-a335-0c1de47ea45a/sv-benchmarks/c/pthread-ext/14_spin2003-pthread.i [2023-11-29 00:10:32,066 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e1f4d1-d2cf-4b61-a335-0c1de47ea45a/bin/uautomizer-verify-BQ2R08f2Ya/data/1a41047a4/4b3483ef518a4f0eb2cfa43fa13dbb94/FLAG3aa6e2f0b [2023-11-29 00:10:32,078 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e1f4d1-d2cf-4b61-a335-0c1de47ea45a/bin/uautomizer-verify-BQ2R08f2Ya/data/1a41047a4/4b3483ef518a4f0eb2cfa43fa13dbb94 [2023-11-29 00:10:32,080 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:10:32,082 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:10:32,083 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:10:32,083 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:10:32,088 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:10:32,088 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:10:32" (1/1) ... [2023-11-29 00:10:32,089 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e8b2838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:32, skipping insertion in model container [2023-11-29 00:10:32,090 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:10:32" (1/1) ... [2023-11-29 00:10:32,129 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:10:32,372 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:10:32,382 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:10:32,421 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:10:32,453 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:10:32,453 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:32 WrapperNode [2023-11-29 00:10:32,453 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:10:32,454 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:10:32,454 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:10:32,455 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:10:32,460 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:32" (1/1) ... [2023-11-29 00:10:32,473 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:32" (1/1) ... [2023-11-29 00:10:32,492 INFO L138 Inliner]: procedures = 162, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 57 [2023-11-29 00:10:32,493 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:10:32,494 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:10:32,494 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:10:32,494 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:10:32,501 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:32" (1/1) ... [2023-11-29 00:10:32,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:32" (1/1) ... [2023-11-29 00:10:32,504 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:32" (1/1) ... [2023-11-29 00:10:32,504 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:32" (1/1) ... [2023-11-29 00:10:32,509 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:32" (1/1) ... [2023-11-29 00:10:32,512 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:32" (1/1) ... [2023-11-29 00:10:32,514 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:32" (1/1) ... [2023-11-29 00:10:32,515 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:32" (1/1) ... [2023-11-29 00:10:32,518 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:10:32,519 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:10:32,519 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:10:32,519 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:10:32,520 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:32" (1/1) ... [2023-11-29 00:10:32,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:10:32,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e1f4d1-d2cf-4b61-a335-0c1de47ea45a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:10:32,544 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e1f4d1-d2cf-4b61-a335-0c1de47ea45a/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:10:32,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e1f4d1-d2cf-4b61-a335-0c1de47ea45a/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:10:32,578 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-29 00:10:32,578 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-29 00:10:32,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 00:10:32,578 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 00:10:32,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:10:32,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 00:10:32,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 00:10:32,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 00:10:32,579 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 00:10:32,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:10:32,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:10:32,580 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 00:10:32,683 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:10:32,685 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:10:32,791 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:10:32,809 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:10:32,809 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 00:10:32,811 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:10:32 BoogieIcfgContainer [2023-11-29 00:10:32,811 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:10:32,813 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:10:32,813 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:10:32,816 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:10:32,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:10:32" (1/3) ... [2023-11-29 00:10:32,817 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14126ce3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:10:32, skipping insertion in model container [2023-11-29 00:10:32,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:32" (2/3) ... [2023-11-29 00:10:32,817 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14126ce3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:10:32, skipping insertion in model container [2023-11-29 00:10:32,818 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:10:32" (3/3) ... [2023-11-29 00:10:32,819 INFO L112 eAbstractionObserver]: Analyzing ICFG 14_spin2003-pthread.i [2023-11-29 00:10:32,825 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 00:10:32,833 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:10:32,834 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-29 00:10:32,834 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 00:10:32,876 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 00:10:32,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 63 transitions, 130 flow [2023-11-29 00:10:32,942 INFO L124 PetriNetUnfolderBase]: 4/74 cut-off events. [2023-11-29 00:10:32,942 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:10:32,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 74 events. 4/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 44. Up to 4 conditions per place. [2023-11-29 00:10:32,947 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 63 transitions, 130 flow [2023-11-29 00:10:32,950 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 63 transitions, 130 flow [2023-11-29 00:10:32,960 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:10:32,967 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;@2c91e5c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:10:32,967 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-29 00:10:32,982 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 00:10:32,982 INFO L124 PetriNetUnfolderBase]: 2/46 cut-off events. [2023-11-29 00:10:32,983 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:10:32,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:10:32,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:32,984 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-29 00:10:32,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:32,989 INFO L85 PathProgramCache]: Analyzing trace with hash -546884405, now seen corresponding path program 1 times [2023-11-29 00:10:32,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:10:32,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161075266] [2023-11-29 00:10:32,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:32,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:10:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:33,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:33,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:10:33,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161075266] [2023-11-29 00:10:33,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161075266] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:33,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:33,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:10:33,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65201884] [2023-11-29 00:10:33,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:33,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:10:33,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:10:33,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:10:33,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:10:33,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 63 [2023-11-29 00:10:33,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 63 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2023-11-29 00:10:33,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:10:33,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 63 [2023-11-29 00:10:33,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:10:33,349 INFO L124 PetriNetUnfolderBase]: 0/54 cut-off events. [2023-11-29 00:10:33,349 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 00:10:33,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 54 events. 0/54 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 20 event pairs, 0 based on Foata normal form. 11/62 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2023-11-29 00:10:33,351 INFO L140 encePairwiseOnDemand]: 56/63 looper letters, 7 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-11-29 00:10:33,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 50 transitions, 122 flow [2023-11-29 00:10:33,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:10:33,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:10:33,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 160 transitions. [2023-11-29 00:10:33,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8465608465608465 [2023-11-29 00:10:33,365 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 160 transitions. [2023-11-29 00:10:33,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 160 transitions. [2023-11-29 00:10:33,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:10:33,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 160 transitions. [2023-11-29 00:10:33,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2023-11-29 00:10:33,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 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) [2023-11-29 00:10:33,376 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 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) [2023-11-29 00:10:33,378 INFO L175 Difference]: Start difference. First operand has 63 places, 63 transitions, 130 flow. Second operand 3 states and 160 transitions. [2023-11-29 00:10:33,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 50 transitions, 122 flow [2023-11-29 00:10:33,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 50 transitions, 122 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 00:10:33,384 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 108 flow [2023-11-29 00:10:33,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2023-11-29 00:10:33,390 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -8 predicate places. [2023-11-29 00:10:33,390 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 108 flow [2023-11-29 00:10:33,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2023-11-29 00:10:33,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:10:33,391 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:33,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:10:33,391 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-29 00:10:33,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:33,392 INFO L85 PathProgramCache]: Analyzing trace with hash 2017439352, now seen corresponding path program 1 times [2023-11-29 00:10:33,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:10:33,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304118645] [2023-11-29 00:10:33,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:33,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:10:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:10:33,425 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 00:10:33,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:10:33,462 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 00:10:33,462 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 00:10:33,463 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-11-29 00:10:33,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2023-11-29 00:10:33,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 7 remaining) [2023-11-29 00:10:33,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2023-11-29 00:10:33,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2023-11-29 00:10:33,466 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2023-11-29 00:10:33,466 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2023-11-29 00:10:33,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 00:10:33,466 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-29 00:10:33,468 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 00:10:33,468 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-29 00:10:33,494 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 00:10:33,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 95 transitions, 200 flow [2023-11-29 00:10:33,526 INFO L124 PetriNetUnfolderBase]: 7/119 cut-off events. [2023-11-29 00:10:33,526 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 00:10:33,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 119 events. 7/119 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 212 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 75. Up to 6 conditions per place. [2023-11-29 00:10:33,528 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 95 transitions, 200 flow [2023-11-29 00:10:33,531 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 95 transitions, 200 flow [2023-11-29 00:10:33,533 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:10:33,534 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;@2c91e5c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:10:33,534 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-29 00:10:33,543 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 00:10:33,544 INFO L124 PetriNetUnfolderBase]: 2/46 cut-off events. [2023-11-29 00:10:33,544 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 00:10:33,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:10:33,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:33,544 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-11-29 00:10:33,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:33,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1806090646, now seen corresponding path program 1 times [2023-11-29 00:10:33,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:10:33,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321633381] [2023-11-29 00:10:33,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:33,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:10:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:33,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:33,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:10:33,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321633381] [2023-11-29 00:10:33,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321633381] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:33,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:33,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:10:33,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599415886] [2023-11-29 00:10:33,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:33,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:10:33,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:10:33,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:10:33,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:10:33,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 95 [2023-11-29 00:10:33,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 95 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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) [2023-11-29 00:10:33,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:10:33,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 95 [2023-11-29 00:10:33,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:10:33,732 INFO L124 PetriNetUnfolderBase]: 57/334 cut-off events. [2023-11-29 00:10:33,732 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-11-29 00:10:33,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 334 events. 57/334 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1694 event pairs, 37 based on Foata normal form. 108/396 useless extension candidates. Maximal degree in co-relation 386. Up to 109 conditions per place. [2023-11-29 00:10:33,737 INFO L140 encePairwiseOnDemand]: 82/95 looper letters, 18 selfloop transitions, 6 changer transitions 0/86 dead transitions. [2023-11-29 00:10:33,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 86 transitions, 235 flow [2023-11-29 00:10:33,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:10:33,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:10:33,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2023-11-29 00:10:33,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8701754385964913 [2023-11-29 00:10:33,741 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2023-11-29 00:10:33,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2023-11-29 00:10:33,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:10:33,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2023-11-29 00:10:33,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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) [2023-11-29 00:10:33,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2023-11-29 00:10:33,746 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2023-11-29 00:10:33,746 INFO L175 Difference]: Start difference. First operand has 95 places, 95 transitions, 200 flow. Second operand 3 states and 248 transitions. [2023-11-29 00:10:33,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 86 transitions, 235 flow [2023-11-29 00:10:33,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 86 transitions, 235 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 00:10:33,749 INFO L231 Difference]: Finished difference. Result has 87 places, 83 transitions, 212 flow [2023-11-29 00:10:33,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=87, PETRI_TRANSITIONS=83} [2023-11-29 00:10:33,750 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -8 predicate places. [2023-11-29 00:10:33,750 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 83 transitions, 212 flow [2023-11-29 00:10:33,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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) [2023-11-29 00:10:33,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:10:33,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:33,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 00:10:33,752 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-11-29 00:10:33,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:33,752 INFO L85 PathProgramCache]: Analyzing trace with hash -828825003, now seen corresponding path program 1 times [2023-11-29 00:10:33,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:10:33,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544730060] [2023-11-29 00:10:33,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:33,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:10:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:33,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:33,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:10:33,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544730060] [2023-11-29 00:10:33,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544730060] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:33,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:33,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:10:33,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552000552] [2023-11-29 00:10:33,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:33,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:10:33,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:10:33,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:10:33,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:10:33,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 95 [2023-11-29 00:10:33,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 83 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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) [2023-11-29 00:10:33,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:10:33,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 95 [2023-11-29 00:10:33,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:10:33,920 INFO L124 PetriNetUnfolderBase]: 69/384 cut-off events. [2023-11-29 00:10:33,920 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2023-11-29 00:10:33,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 384 events. 69/384 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2062 event pairs, 37 based on Foata normal form. 0/336 useless extension candidates. Maximal degree in co-relation 544. Up to 123 conditions per place. [2023-11-29 00:10:33,925 INFO L140 encePairwiseOnDemand]: 88/95 looper letters, 21 selfloop transitions, 6 changer transitions 0/91 dead transitions. [2023-11-29 00:10:33,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 91 transitions, 293 flow [2023-11-29 00:10:33,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:10:33,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:10:33,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 238 transitions. [2023-11-29 00:10:33,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8350877192982457 [2023-11-29 00:10:33,927 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 238 transitions. [2023-11-29 00:10:33,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 238 transitions. [2023-11-29 00:10:33,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:10:33,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 238 transitions. [2023-11-29 00:10:33,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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) [2023-11-29 00:10:33,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2023-11-29 00:10:33,931 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2023-11-29 00:10:33,931 INFO L175 Difference]: Start difference. First operand has 87 places, 83 transitions, 212 flow. Second operand 3 states and 238 transitions. [2023-11-29 00:10:33,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 91 transitions, 293 flow [2023-11-29 00:10:33,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 91 transitions, 281 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:10:33,935 INFO L231 Difference]: Finished difference. Result has 89 places, 88 transitions, 252 flow [2023-11-29 00:10:33,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=89, PETRI_TRANSITIONS=88} [2023-11-29 00:10:33,936 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -6 predicate places. [2023-11-29 00:10:33,936 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 88 transitions, 252 flow [2023-11-29 00:10:33,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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) [2023-11-29 00:10:33,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:10:33,937 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:33,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 00:10:33,937 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-11-29 00:10:33,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:33,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1680372909, now seen corresponding path program 1 times [2023-11-29 00:10:33,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:10:33,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76988119] [2023-11-29 00:10:33,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:33,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:10:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:10:33,958 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 00:10:33,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:10:33,977 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 00:10:33,977 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 00:10:33,977 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2023-11-29 00:10:33,977 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2023-11-29 00:10:33,978 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2023-11-29 00:10:33,978 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2023-11-29 00:10:33,978 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2023-11-29 00:10:33,978 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2023-11-29 00:10:33,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2023-11-29 00:10:33,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2023-11-29 00:10:33,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2023-11-29 00:10:33,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2023-11-29 00:10:33,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 00:10:33,980 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-29 00:10:33,980 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 00:10:33,980 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-29 00:10:34,006 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 00:10:34,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 127 transitions, 272 flow [2023-11-29 00:10:34,037 INFO L124 PetriNetUnfolderBase]: 10/164 cut-off events. [2023-11-29 00:10:34,037 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-29 00:10:34,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 164 events. 10/164 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 392 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 123. Up to 8 conditions per place. [2023-11-29 00:10:34,038 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 127 transitions, 272 flow [2023-11-29 00:10:34,041 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 127 transitions, 272 flow [2023-11-29 00:10:34,042 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:10:34,043 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;@2c91e5c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:10:34,043 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-29 00:10:34,049 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 00:10:34,049 INFO L124 PetriNetUnfolderBase]: 2/46 cut-off events. [2023-11-29 00:10:34,049 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 00:10:34,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:10:34,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:34,049 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-29 00:10:34,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:34,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1158823850, now seen corresponding path program 1 times [2023-11-29 00:10:34,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:10:34,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028977352] [2023-11-29 00:10:34,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:34,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:10:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:34,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:34,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:10:34,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028977352] [2023-11-29 00:10:34,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028977352] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:34,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:34,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:10:34,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571657735] [2023-11-29 00:10:34,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:34,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:10:34,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:10:34,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:10:34,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:10:34,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 127 [2023-11-29 00:10:34,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 127 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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) [2023-11-29 00:10:34,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:10:34,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 127 [2023-11-29 00:10:34,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:10:34,653 INFO L124 PetriNetUnfolderBase]: 783/2705 cut-off events. [2023-11-29 00:10:34,653 INFO L125 PetriNetUnfolderBase]: For 427/427 co-relation queries the response was YES. [2023-11-29 00:10:34,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4281 conditions, 2705 events. 783/2705 cut-off events. For 427/427 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 23807 event pairs, 556 based on Foata normal form. 838/3132 useless extension candidates. Maximal degree in co-relation 3387. Up to 1091 conditions per place. [2023-11-29 00:10:34,681 INFO L140 encePairwiseOnDemand]: 109/127 looper letters, 27 selfloop transitions, 9 changer transitions 0/119 dead transitions. [2023-11-29 00:10:34,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 119 transitions, 340 flow [2023-11-29 00:10:34,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:10:34,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:10:34,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 333 transitions. [2023-11-29 00:10:34,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8740157480314961 [2023-11-29 00:10:34,684 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 333 transitions. [2023-11-29 00:10:34,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 333 transitions. [2023-11-29 00:10:34,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:10:34,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 333 transitions. [2023-11-29 00:10:34,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 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) [2023-11-29 00:10:34,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 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) [2023-11-29 00:10:34,688 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 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) [2023-11-29 00:10:34,688 INFO L175 Difference]: Start difference. First operand has 127 places, 127 transitions, 272 flow. Second operand 3 states and 333 transitions. [2023-11-29 00:10:34,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 119 transitions, 340 flow [2023-11-29 00:10:34,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 119 transitions, 336 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-29 00:10:34,692 INFO L231 Difference]: Finished difference. Result has 116 places, 113 transitions, 296 flow [2023-11-29 00:10:34,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=296, PETRI_PLACES=116, PETRI_TRANSITIONS=113} [2023-11-29 00:10:34,693 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, -11 predicate places. [2023-11-29 00:10:34,694 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 113 transitions, 296 flow [2023-11-29 00:10:34,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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) [2023-11-29 00:10:34,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:10:34,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:34,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 00:10:34,694 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-29 00:10:34,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:34,695 INFO L85 PathProgramCache]: Analyzing trace with hash -758629932, now seen corresponding path program 1 times [2023-11-29 00:10:34,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:10:34,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382841978] [2023-11-29 00:10:34,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:34,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:10:34,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:34,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:34,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:10:34,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382841978] [2023-11-29 00:10:34,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382841978] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:34,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:34,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:10:34,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640770636] [2023-11-29 00:10:34,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:34,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:10:34,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:10:34,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:10:34,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:10:34,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 127 [2023-11-29 00:10:34,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 113 transitions, 296 flow. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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) [2023-11-29 00:10:34,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:10:34,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 127 [2023-11-29 00:10:34,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:10:35,301 INFO L124 PetriNetUnfolderBase]: 1015/3344 cut-off events. [2023-11-29 00:10:35,301 INFO L125 PetriNetUnfolderBase]: For 1009/1031 co-relation queries the response was YES. [2023-11-29 00:10:35,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6179 conditions, 3344 events. 1015/3344 cut-off events. For 1009/1031 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 30465 event pairs, 645 based on Foata normal form. 0/2842 useless extension candidates. Maximal degree in co-relation 6059. Up to 1358 conditions per place. [2023-11-29 00:10:35,341 INFO L140 encePairwiseOnDemand]: 117/127 looper letters, 33 selfloop transitions, 9 changer transitions 0/127 dead transitions. [2023-11-29 00:10:35,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 127 transitions, 430 flow [2023-11-29 00:10:35,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:10:35,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:10:35,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 319 transitions. [2023-11-29 00:10:35,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8372703412073491 [2023-11-29 00:10:35,343 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 319 transitions. [2023-11-29 00:10:35,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 319 transitions. [2023-11-29 00:10:35,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:10:35,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 319 transitions. [2023-11-29 00:10:35,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 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) [2023-11-29 00:10:35,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 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) [2023-11-29 00:10:35,346 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 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) [2023-11-29 00:10:35,347 INFO L175 Difference]: Start difference. First operand has 116 places, 113 transitions, 296 flow. Second operand 3 states and 319 transitions. [2023-11-29 00:10:35,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 127 transitions, 430 flow [2023-11-29 00:10:35,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 127 transitions, 412 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:10:35,355 INFO L231 Difference]: Finished difference. Result has 118 places, 121 transitions, 360 flow [2023-11-29 00:10:35,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=360, PETRI_PLACES=118, PETRI_TRANSITIONS=121} [2023-11-29 00:10:35,356 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, -9 predicate places. [2023-11-29 00:10:35,356 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 121 transitions, 360 flow [2023-11-29 00:10:35,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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) [2023-11-29 00:10:35,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:10:35,357 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:35,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 00:10:35,357 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-29 00:10:35,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:35,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1366380159, now seen corresponding path program 1 times [2023-11-29 00:10:35,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:10:35,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013871711] [2023-11-29 00:10:35,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:35,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:10:35,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:35,395 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 00:10:35,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:10:35,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013871711] [2023-11-29 00:10:35,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013871711] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:35,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:35,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:10:35,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218518848] [2023-11-29 00:10:35,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:35,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:10:35,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:10:35,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:10:35,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:10:35,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 127 [2023-11-29 00:10:35,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 121 transitions, 360 flow. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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) [2023-11-29 00:10:35,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:10:35,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 127 [2023-11-29 00:10:35,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:10:36,031 INFO L124 PetriNetUnfolderBase]: 1566/4678 cut-off events. [2023-11-29 00:10:36,031 INFO L125 PetriNetUnfolderBase]: For 2828/2925 co-relation queries the response was YES. [2023-11-29 00:10:36,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9915 conditions, 4678 events. 1566/4678 cut-off events. For 2828/2925 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 44080 event pairs, 800 based on Foata normal form. 1/3959 useless extension candidates. Maximal degree in co-relation 9809. Up to 1918 conditions per place. [2023-11-29 00:10:36,072 INFO L140 encePairwiseOnDemand]: 117/127 looper letters, 36 selfloop transitions, 17 changer transitions 0/140 dead transitions. [2023-11-29 00:10:36,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 140 transitions, 551 flow [2023-11-29 00:10:36,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:10:36,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:10:36,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 318 transitions. [2023-11-29 00:10:36,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8346456692913385 [2023-11-29 00:10:36,074 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 318 transitions. [2023-11-29 00:10:36,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 318 transitions. [2023-11-29 00:10:36,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:10:36,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 318 transitions. [2023-11-29 00:10:36,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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) [2023-11-29 00:10:36,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 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) [2023-11-29 00:10:36,078 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 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) [2023-11-29 00:10:36,079 INFO L175 Difference]: Start difference. First operand has 118 places, 121 transitions, 360 flow. Second operand 3 states and 318 transitions. [2023-11-29 00:10:36,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 140 transitions, 551 flow [2023-11-29 00:10:36,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 140 transitions, 507 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-29 00:10:36,089 INFO L231 Difference]: Finished difference. Result has 120 places, 135 transitions, 484 flow [2023-11-29 00:10:36,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=484, PETRI_PLACES=120, PETRI_TRANSITIONS=135} [2023-11-29 00:10:36,090 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, -7 predicate places. [2023-11-29 00:10:36,090 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 135 transitions, 484 flow [2023-11-29 00:10:36,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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) [2023-11-29 00:10:36,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:10:36,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:36,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 00:10:36,091 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-29 00:10:36,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:36,091 INFO L85 PathProgramCache]: Analyzing trace with hash -225946769, now seen corresponding path program 1 times [2023-11-29 00:10:36,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:10:36,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951644314] [2023-11-29 00:10:36,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:36,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:10:36,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:36,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:36,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:10:36,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951644314] [2023-11-29 00:10:36,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951644314] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:36,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:36,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:10:36,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561991932] [2023-11-29 00:10:36,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:36,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:10:36,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:10:36,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:10:36,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:10:36,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 127 [2023-11-29 00:10:36,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 135 transitions, 484 flow. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 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) [2023-11-29 00:10:36,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:10:36,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 127 [2023-11-29 00:10:36,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:10:37,148 INFO L124 PetriNetUnfolderBase]: 2598/8187 cut-off events. [2023-11-29 00:10:37,148 INFO L125 PetriNetUnfolderBase]: For 8320/8448 co-relation queries the response was YES. [2023-11-29 00:10:37,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18642 conditions, 8187 events. 2598/8187 cut-off events. For 8320/8448 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 86666 event pairs, 572 based on Foata normal form. 6/6935 useless extension candidates. Maximal degree in co-relation 18529. Up to 1919 conditions per place. [2023-11-29 00:10:37,206 INFO L140 encePairwiseOnDemand]: 112/127 looper letters, 54 selfloop transitions, 32 changer transitions 0/173 dead transitions. [2023-11-29 00:10:37,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 173 transitions, 870 flow [2023-11-29 00:10:37,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:10:37,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:10:37,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 323 transitions. [2023-11-29 00:10:37,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.847769028871391 [2023-11-29 00:10:37,208 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 323 transitions. [2023-11-29 00:10:37,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 323 transitions. [2023-11-29 00:10:37,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:10:37,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 323 transitions. [2023-11-29 00:10:37,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 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) [2023-11-29 00:10:37,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 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) [2023-11-29 00:10:37,211 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 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) [2023-11-29 00:10:37,211 INFO L175 Difference]: Start difference. First operand has 120 places, 135 transitions, 484 flow. Second operand 3 states and 323 transitions. [2023-11-29 00:10:37,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 173 transitions, 870 flow [2023-11-29 00:10:37,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 173 transitions, 818 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:10:37,258 INFO L231 Difference]: Finished difference. Result has 122 places, 165 transitions, 814 flow [2023-11-29 00:10:37,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=814, PETRI_PLACES=122, PETRI_TRANSITIONS=165} [2023-11-29 00:10:37,259 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, -5 predicate places. [2023-11-29 00:10:37,259 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 165 transitions, 814 flow [2023-11-29 00:10:37,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 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) [2023-11-29 00:10:37,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:10:37,260 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:37,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 00:10:37,260 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-29 00:10:37,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:37,261 INFO L85 PathProgramCache]: Analyzing trace with hash -86142850, now seen corresponding path program 1 times [2023-11-29 00:10:37,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:10:37,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273571784] [2023-11-29 00:10:37,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:37,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:10:37,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:37,299 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 00:10:37,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:10:37,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273571784] [2023-11-29 00:10:37,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273571784] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:37,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:37,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:10:37,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196274301] [2023-11-29 00:10:37,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:37,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:10:37,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:10:37,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:10:37,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:10:37,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 127 [2023-11-29 00:10:37,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 165 transitions, 814 flow. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 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) [2023-11-29 00:10:37,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:10:37,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 127 [2023-11-29 00:10:37,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:10:38,860 INFO L124 PetriNetUnfolderBase]: 3523/10450 cut-off events. [2023-11-29 00:10:38,860 INFO L125 PetriNetUnfolderBase]: For 21032/21486 co-relation queries the response was YES. [2023-11-29 00:10:38,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27968 conditions, 10450 events. 3523/10450 cut-off events. For 21032/21486 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 113574 event pairs, 1043 based on Foata normal form. 15/8940 useless extension candidates. Maximal degree in co-relation 27855. Up to 4052 conditions per place. [2023-11-29 00:10:38,967 INFO L140 encePairwiseOnDemand]: 117/127 looper letters, 72 selfloop transitions, 26 changer transitions 0/190 dead transitions. [2023-11-29 00:10:38,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 190 transitions, 1197 flow [2023-11-29 00:10:38,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:10:38,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:10:38,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 318 transitions. [2023-11-29 00:10:38,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8346456692913385 [2023-11-29 00:10:38,970 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 318 transitions. [2023-11-29 00:10:38,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 318 transitions. [2023-11-29 00:10:38,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:10:38,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 318 transitions. [2023-11-29 00:10:38,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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) [2023-11-29 00:10:38,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 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) [2023-11-29 00:10:38,973 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 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) [2023-11-29 00:10:38,973 INFO L175 Difference]: Start difference. First operand has 122 places, 165 transitions, 814 flow. Second operand 3 states and 318 transitions. [2023-11-29 00:10:38,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 190 transitions, 1197 flow [2023-11-29 00:10:39,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 190 transitions, 1117 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:10:39,013 INFO L231 Difference]: Finished difference. Result has 124 places, 185 transitions, 1052 flow [2023-11-29 00:10:39,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1052, PETRI_PLACES=124, PETRI_TRANSITIONS=185} [2023-11-29 00:10:39,014 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, -3 predicate places. [2023-11-29 00:10:39,014 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 185 transitions, 1052 flow [2023-11-29 00:10:39,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 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) [2023-11-29 00:10:39,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:10:39,015 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:39,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 00:10:39,015 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-29 00:10:39,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:39,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1038258495, now seen corresponding path program 1 times [2023-11-29 00:10:39,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:10:39,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551731007] [2023-11-29 00:10:39,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:39,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:10:39,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:39,169 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 00:10:39,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:10:39,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551731007] [2023-11-29 00:10:39,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551731007] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:39,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:39,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:10:39,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176908789] [2023-11-29 00:10:39,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:39,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:10:39,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:10:39,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:10:39,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:10:39,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 127 [2023-11-29 00:10:39,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 185 transitions, 1052 flow. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 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) [2023-11-29 00:10:39,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:10:39,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 127 [2023-11-29 00:10:39,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:10:39,241 INFO L124 PetriNetUnfolderBase]: 15/373 cut-off events. [2023-11-29 00:10:39,242 INFO L125 PetriNetUnfolderBase]: For 305/305 co-relation queries the response was YES. [2023-11-29 00:10:39,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 666 conditions, 373 events. 15/373 cut-off events. For 305/305 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1507 event pairs, 3 based on Foata normal form. 14/362 useless extension candidates. Maximal degree in co-relation 362. Up to 29 conditions per place. [2023-11-29 00:10:39,243 INFO L140 encePairwiseOnDemand]: 121/127 looper letters, 6 selfloop transitions, 6 changer transitions 0/103 dead transitions. [2023-11-29 00:10:39,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 103 transitions, 382 flow [2023-11-29 00:10:39,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:10:39,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:10:39,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 333 transitions. [2023-11-29 00:10:39,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8740157480314961 [2023-11-29 00:10:39,245 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 333 transitions. [2023-11-29 00:10:39,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 333 transitions. [2023-11-29 00:10:39,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:10:39,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 333 transitions. [2023-11-29 00:10:39,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 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) [2023-11-29 00:10:39,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 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) [2023-11-29 00:10:39,248 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 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) [2023-11-29 00:10:39,249 INFO L175 Difference]: Start difference. First operand has 124 places, 185 transitions, 1052 flow. Second operand 3 states and 333 transitions. [2023-11-29 00:10:39,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 103 transitions, 382 flow [2023-11-29 00:10:39,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 103 transitions, 274 flow, removed 42 selfloop flow, removed 10 redundant places. [2023-11-29 00:10:39,253 INFO L231 Difference]: Finished difference. Result has 109 places, 101 transitions, 248 flow [2023-11-29 00:10:39,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=109, PETRI_TRANSITIONS=101} [2023-11-29 00:10:39,253 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, -18 predicate places. [2023-11-29 00:10:39,254 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 101 transitions, 248 flow [2023-11-29 00:10:39,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 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) [2023-11-29 00:10:39,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:10:39,254 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:39,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 00:10:39,254 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-29 00:10:39,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:39,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1622906571, now seen corresponding path program 1 times [2023-11-29 00:10:39,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:10:39,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612345540] [2023-11-29 00:10:39,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:39,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:10:39,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:10:39,273 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 00:10:39,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:10:39,290 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 00:10:39,290 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 00:10:39,290 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-11-29 00:10:39,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2023-11-29 00:10:39,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2023-11-29 00:10:39,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2023-11-29 00:10:39,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2023-11-29 00:10:39,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2023-11-29 00:10:39,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2023-11-29 00:10:39,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2023-11-29 00:10:39,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2023-11-29 00:10:39,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2023-11-29 00:10:39,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2023-11-29 00:10:39,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2023-11-29 00:10:39,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2023-11-29 00:10:39,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 00:10:39,292 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:39,293 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 00:10:39,293 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-29 00:10:39,320 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 00:10:39,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 159 transitions, 346 flow [2023-11-29 00:10:39,347 INFO L124 PetriNetUnfolderBase]: 13/209 cut-off events. [2023-11-29 00:10:39,347 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-29 00:10:39,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 209 events. 13/209 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 564 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 172. Up to 10 conditions per place. [2023-11-29 00:10:39,349 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 159 transitions, 346 flow [2023-11-29 00:10:39,351 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 159 transitions, 346 flow [2023-11-29 00:10:39,352 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:10:39,352 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;@2c91e5c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:10:39,352 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-29 00:10:39,356 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 00:10:39,356 INFO L124 PetriNetUnfolderBase]: 2/48 cut-off events. [2023-11-29 00:10:39,356 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 00:10:39,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:10:39,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:39,356 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-29 00:10:39,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:39,357 INFO L85 PathProgramCache]: Analyzing trace with hash 782752137, now seen corresponding path program 1 times [2023-11-29 00:10:39,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:10:39,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522383406] [2023-11-29 00:10:39,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:39,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:10:39,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:39,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:39,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:10:39,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522383406] [2023-11-29 00:10:39,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522383406] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:39,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:39,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:10:39,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090943933] [2023-11-29 00:10:39,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:39,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:10:39,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:10:39,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:10:39,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:10:39,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 159 [2023-11-29 00:10:39,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 159 transitions, 346 flow. Second operand has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 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) [2023-11-29 00:10:39,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:10:39,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 159 [2023-11-29 00:10:39,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:10:41,731 INFO L124 PetriNetUnfolderBase]: 7395/19566 cut-off events. [2023-11-29 00:10:41,731 INFO L125 PetriNetUnfolderBase]: For 4630/4630 co-relation queries the response was YES. [2023-11-29 00:10:41,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32423 conditions, 19566 events. 7395/19566 cut-off events. For 4630/4630 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 217380 event pairs, 5488 based on Foata normal form. 6072/22846 useless extension candidates. Maximal degree in co-relation 25204. Up to 9127 conditions per place. [2023-11-29 00:10:41,850 INFO L140 encePairwiseOnDemand]: 136/159 looper letters, 36 selfloop transitions, 12 changer transitions 0/152 dead transitions. [2023-11-29 00:10:41,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 152 transitions, 449 flow [2023-11-29 00:10:41,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:10:41,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:10:41,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 418 transitions. [2023-11-29 00:10:41,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8763102725366876 [2023-11-29 00:10:41,852 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 418 transitions. [2023-11-29 00:10:41,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 418 transitions. [2023-11-29 00:10:41,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:10:41,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 418 transitions. [2023-11-29 00:10:41,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 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) [2023-11-29 00:10:41,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 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) [2023-11-29 00:10:41,855 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 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) [2023-11-29 00:10:41,855 INFO L175 Difference]: Start difference. First operand has 159 places, 159 transitions, 346 flow. Second operand 3 states and 418 transitions. [2023-11-29 00:10:41,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 152 transitions, 449 flow [2023-11-29 00:10:41,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 152 transitions, 437 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-11-29 00:10:41,860 INFO L231 Difference]: Finished difference. Result has 145 places, 143 transitions, 380 flow [2023-11-29 00:10:41,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=380, PETRI_PLACES=145, PETRI_TRANSITIONS=143} [2023-11-29 00:10:41,861 INFO L281 CegarLoopForPetriNet]: 159 programPoint places, -14 predicate places. [2023-11-29 00:10:41,861 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 143 transitions, 380 flow [2023-11-29 00:10:41,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 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) [2023-11-29 00:10:41,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:10:41,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:41,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 00:10:41,862 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-29 00:10:41,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:41,862 INFO L85 PathProgramCache]: Analyzing trace with hash 992060563, now seen corresponding path program 1 times [2023-11-29 00:10:41,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:10:41,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218472298] [2023-11-29 00:10:41,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:41,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:10:41,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:41,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:41,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:10:41,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218472298] [2023-11-29 00:10:41,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218472298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:41,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:41,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:10:41,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464108792] [2023-11-29 00:10:41,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:41,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:10:41,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:10:41,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:10:41,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:10:41,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 159 [2023-11-29 00:10:41,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 143 transitions, 380 flow. Second operand has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 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) [2023-11-29 00:10:41,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:10:41,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 159 [2023-11-29 00:10:41,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:10:44,619 INFO L124 PetriNetUnfolderBase]: 9861/25443 cut-off events. [2023-11-29 00:10:44,619 INFO L125 PetriNetUnfolderBase]: For 7988/8147 co-relation queries the response was YES. [2023-11-29 00:10:44,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49313 conditions, 25443 events. 9861/25443 cut-off events. For 7988/8147 co-relation queries the response was YES. Maximal size of possible extension queue 861. Compared 290863 event pairs, 6724 based on Foata normal form. 0/21870 useless extension candidates. Maximal degree in co-relation 49192. Up to 11893 conditions per place. [2023-11-29 00:10:44,827 INFO L140 encePairwiseOnDemand]: 146/159 looper letters, 45 selfloop transitions, 12 changer transitions 0/163 dead transitions. [2023-11-29 00:10:44,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 163 transitions, 567 flow [2023-11-29 00:10:44,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:10:44,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:10:44,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 400 transitions. [2023-11-29 00:10:44,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8385744234800838 [2023-11-29 00:10:44,830 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 400 transitions. [2023-11-29 00:10:44,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 400 transitions. [2023-11-29 00:10:44,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:10:44,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 400 transitions. [2023-11-29 00:10:44,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 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) [2023-11-29 00:10:44,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 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) [2023-11-29 00:10:44,833 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 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) [2023-11-29 00:10:44,833 INFO L175 Difference]: Start difference. First operand has 145 places, 143 transitions, 380 flow. Second operand 3 states and 400 transitions. [2023-11-29 00:10:44,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 163 transitions, 567 flow [2023-11-29 00:10:44,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 163 transitions, 543 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:10:44,860 INFO L231 Difference]: Finished difference. Result has 147 places, 154 transitions, 468 flow [2023-11-29 00:10:44,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=468, PETRI_PLACES=147, PETRI_TRANSITIONS=154} [2023-11-29 00:10:44,861 INFO L281 CegarLoopForPetriNet]: 159 programPoint places, -12 predicate places. [2023-11-29 00:10:44,861 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 154 transitions, 468 flow [2023-11-29 00:10:44,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 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) [2023-11-29 00:10:44,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:10:44,862 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:44,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 00:10:44,862 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-29 00:10:44,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:44,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1308563870, now seen corresponding path program 1 times [2023-11-29 00:10:44,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:10:44,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821999544] [2023-11-29 00:10:44,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:44,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:10:44,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:44,888 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 00:10:44,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:10:44,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821999544] [2023-11-29 00:10:44,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821999544] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:44,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:44,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:10:44,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809793455] [2023-11-29 00:10:44,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:44,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:10:44,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:10:44,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:10:44,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:10:44,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 159 [2023-11-29 00:10:44,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 154 transitions, 468 flow. Second operand has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 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) [2023-11-29 00:10:44,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:10:44,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 159 [2023-11-29 00:10:44,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:10:49,153 INFO L124 PetriNetUnfolderBase]: 16487/39501 cut-off events. [2023-11-29 00:10:49,153 INFO L125 PetriNetUnfolderBase]: For 27632/29807 co-relation queries the response was YES. [2023-11-29 00:10:49,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88367 conditions, 39501 events. 16487/39501 cut-off events. For 27632/29807 co-relation queries the response was YES. Maximal size of possible extension queue 1365. Compared 461647 event pairs, 9148 based on Foata normal form. 38/33405 useless extension candidates. Maximal degree in co-relation 88256. Up to 18525 conditions per place. [2023-11-29 00:10:49,478 INFO L140 encePairwiseOnDemand]: 146/159 looper letters, 51 selfloop transitions, 26 changer transitions 0/185 dead transitions. [2023-11-29 00:10:49,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 185 transitions, 772 flow [2023-11-29 00:10:49,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:10:49,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:10:49,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 399 transitions. [2023-11-29 00:10:49,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8364779874213837 [2023-11-29 00:10:49,480 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 399 transitions. [2023-11-29 00:10:49,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 399 transitions. [2023-11-29 00:10:49,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:10:49,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 399 transitions. [2023-11-29 00:10:49,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 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) [2023-11-29 00:10:49,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 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) [2023-11-29 00:10:49,482 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 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) [2023-11-29 00:10:49,482 INFO L175 Difference]: Start difference. First operand has 147 places, 154 transitions, 468 flow. Second operand 3 states and 399 transitions. [2023-11-29 00:10:49,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 185 transitions, 772 flow [2023-11-29 00:10:49,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 185 transitions, 704 flow, removed 15 selfloop flow, removed 2 redundant places. [2023-11-29 00:10:49,621 INFO L231 Difference]: Finished difference. Result has 149 places, 177 transitions, 676 flow [2023-11-29 00:10:49,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=676, PETRI_PLACES=149, PETRI_TRANSITIONS=177} [2023-11-29 00:10:49,622 INFO L281 CegarLoopForPetriNet]: 159 programPoint places, -10 predicate places. [2023-11-29 00:10:49,622 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 177 transitions, 676 flow [2023-11-29 00:10:49,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 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) [2023-11-29 00:10:49,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:10:49,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:49,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 00:10:49,623 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-29 00:10:49,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:49,624 INFO L85 PathProgramCache]: Analyzing trace with hash 806903118, now seen corresponding path program 1 times [2023-11-29 00:10:49,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:10:49,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113322119] [2023-11-29 00:10:49,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:49,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:10:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:49,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:49,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:10:49,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113322119] [2023-11-29 00:10:49,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113322119] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:49,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:49,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:10:49,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49320077] [2023-11-29 00:10:49,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:49,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:10:49,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:10:49,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:10:49,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:10:49,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 159 [2023-11-29 00:10:49,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 177 transitions, 676 flow. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 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) [2023-11-29 00:10:49,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:10:49,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 159 [2023-11-29 00:10:49,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:11:00,340 INFO L124 PetriNetUnfolderBase]: 42024/99748 cut-off events. [2023-11-29 00:11:00,340 INFO L125 PetriNetUnfolderBase]: For 128369/133202 co-relation queries the response was YES. [2023-11-29 00:11:00,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248432 conditions, 99748 events. 42024/99748 cut-off events. For 128369/133202 co-relation queries the response was YES. Maximal size of possible extension queue 3455. Compared 1297409 event pairs, 10303 based on Foata normal form. 123/82922 useless extension candidates. Maximal degree in co-relation 248303. Up to 27414 conditions per place. [2023-11-29 00:11:01,294 INFO L140 encePairwiseOnDemand]: 139/159 looper letters, 82 selfloop transitions, 55 changer transitions 0/243 dead transitions. [2023-11-29 00:11:01,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 243 transitions, 1363 flow [2023-11-29 00:11:01,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:11:01,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:11:01,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 402 transitions. [2023-11-29 00:11:01,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8427672955974843 [2023-11-29 00:11:01,297 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 402 transitions. [2023-11-29 00:11:01,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 402 transitions. [2023-11-29 00:11:01,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:11:01,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 402 transitions. [2023-11-29 00:11:01,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 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) [2023-11-29 00:11:01,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 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) [2023-11-29 00:11:01,300 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 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) [2023-11-29 00:11:01,300 INFO L175 Difference]: Start difference. First operand has 149 places, 177 transitions, 676 flow. Second operand 3 states and 402 transitions. [2023-11-29 00:11:01,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 243 transitions, 1363 flow [2023-11-29 00:11:01,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 243 transitions, 1263 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:11:01,717 INFO L231 Difference]: Finished difference. Result has 151 places, 232 transitions, 1290 flow [2023-11-29 00:11:01,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=624, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1290, PETRI_PLACES=151, PETRI_TRANSITIONS=232} [2023-11-29 00:11:01,718 INFO L281 CegarLoopForPetriNet]: 159 programPoint places, -8 predicate places. [2023-11-29 00:11:01,718 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 232 transitions, 1290 flow [2023-11-29 00:11:01,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 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) [2023-11-29 00:11:01,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:11:01,719 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:11:01,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 00:11:01,719 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-29 00:11:01,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:11:01,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1978372605, now seen corresponding path program 1 times [2023-11-29 00:11:01,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:11:01,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671304352] [2023-11-29 00:11:01,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:01,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:11:01,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:01,749 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 00:11:01,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:11:01,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671304352] [2023-11-29 00:11:01,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671304352] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:11:01,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:11:01,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:11:01,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260399262] [2023-11-29 00:11:01,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:11:01,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:11:01,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:11:01,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:11:01,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:11:01,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 159 [2023-11-29 00:11:01,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 232 transitions, 1290 flow. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 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) [2023-11-29 00:11:01,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:11:01,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 159 [2023-11-29 00:11:01,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:11:11,848 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([538] L689-2-->L689-3: Formula: (= |v_thr1Thread3of4ForFork0_#t~nondet2#1_3| |v_#race~x~0_1|) InVars {thr1Thread3of4ForFork0_#t~nondet2#1=|v_thr1Thread3of4ForFork0_#t~nondet2#1_3|} OutVars{#race~x~0=|v_#race~x~0_1|, thr1Thread3of4ForFork0_#t~nondet2#1=|v_thr1Thread3of4ForFork0_#t~nondet2#1_3|} AuxVars[] AssignedVars[#race~x~0][146], [thr1Thread4of4ForFork0InUse, 132#L698-5true, Black: 164#(= |thr1Thread1of4ForFork0_#t~nondet2#1| |#race~x~0|), 186#true, Black: 170#(= |thr1Thread1of4ForFork0_#t~nondet3#1| |#race~x~0|), 10#L690true, Black: 176#(= |#race~x~0| |thr1Thread2of4ForFork0_#t~nondet2#1|), 180#true, Black: 182#(= |#race~x~0| 0), 11#L692-2true, thr1Thread1of4ForFork0InUse, thr1Thread2of4ForFork0InUse, 68#L691-2true, thr1Thread3of4ForFork0InUse, 55#L689-3true]) [2023-11-29 00:11:11,848 INFO L294 olderBase$Statistics]: this new event has 89 ancestors and is cut-off event [2023-11-29 00:11:11,848 INFO L297 olderBase$Statistics]: existing Event has 89 ancestors and is cut-off event [2023-11-29 00:11:11,848 INFO L297 olderBase$Statistics]: existing Event has 89 ancestors and is cut-off event [2023-11-29 00:11:11,848 INFO L297 olderBase$Statistics]: existing Event has 89 ancestors and is cut-off event [2023-11-29 00:11:18,121 INFO L124 PetriNetUnfolderBase]: 56857/132780 cut-off events. [2023-11-29 00:11:18,122 INFO L125 PetriNetUnfolderBase]: For 351905/367426 co-relation queries the response was YES. [2023-11-29 00:11:18,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 393438 conditions, 132780 events. 56857/132780 cut-off events. For 351905/367426 co-relation queries the response was YES. Maximal size of possible extension queue 4585. Compared 1771229 event pairs, 17642 based on Foata normal form. 351/111667 useless extension candidates. Maximal degree in co-relation 393309. Up to 58917 conditions per place. [2023-11-29 00:11:19,785 INFO L140 encePairwiseOnDemand]: 146/159 looper letters, 120 selfloop transitions, 50 changer transitions 0/284 dead transitions. [2023-11-29 00:11:19,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 284 transitions, 2058 flow [2023-11-29 00:11:19,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:11:19,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:11:19,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 399 transitions. [2023-11-29 00:11:19,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8364779874213837 [2023-11-29 00:11:19,788 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 399 transitions. [2023-11-29 00:11:19,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 399 transitions. [2023-11-29 00:11:19,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:11:19,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 399 transitions. [2023-11-29 00:11:19,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 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) [2023-11-29 00:11:19,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 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) [2023-11-29 00:11:19,791 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 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) [2023-11-29 00:11:19,792 INFO L175 Difference]: Start difference. First operand has 151 places, 232 transitions, 1290 flow. Second operand 3 states and 399 transitions. [2023-11-29 00:11:19,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 284 transitions, 2058 flow [2023-11-29 00:11:20,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 284 transitions, 1906 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:11:20,787 INFO L231 Difference]: Finished difference. Result has 153 places, 276 transitions, 1830 flow [2023-11-29 00:11:20,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=1180, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1830, PETRI_PLACES=153, PETRI_TRANSITIONS=276} [2023-11-29 00:11:20,788 INFO L281 CegarLoopForPetriNet]: 159 programPoint places, -6 predicate places. [2023-11-29 00:11:20,788 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 276 transitions, 1830 flow [2023-11-29 00:11:20,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 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) [2023-11-29 00:11:20,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:11:20,788 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:11:20,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 00:11:20,789 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-29 00:11:20,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:11:20,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1535977760, now seen corresponding path program 1 times [2023-11-29 00:11:20,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:11:20,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540134077] [2023-11-29 00:11:20,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:20,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:11:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:20,865 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 00:11:20,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:11:20,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540134077] [2023-11-29 00:11:20,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540134077] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:11:20,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:11:20,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:11:20,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031415315] [2023-11-29 00:11:20,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:11:20,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:11:20,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:11:20,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:11:20,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:11:20,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 159 [2023-11-29 00:11:20,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 276 transitions, 1830 flow. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 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) [2023-11-29 00:11:20,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:11:20,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 159 [2023-11-29 00:11:20,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:11:21,013 INFO L124 PetriNetUnfolderBase]: 51/985 cut-off events. [2023-11-29 00:11:21,013 INFO L125 PetriNetUnfolderBase]: For 961/961 co-relation queries the response was YES. [2023-11-29 00:11:21,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1785 conditions, 985 events. 51/985 cut-off events. For 961/961 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 6223 event pairs, 18 based on Foata normal form. 62/965 useless extension candidates. Maximal degree in co-relation 962. Up to 87 conditions per place. [2023-11-29 00:11:21,017 INFO L140 encePairwiseOnDemand]: 151/159 looper letters, 8 selfloop transitions, 8 changer transitions 0/131 dead transitions. [2023-11-29 00:11:21,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 131 transitions, 499 flow [2023-11-29 00:11:21,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:11:21,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:11:21,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 416 transitions. [2023-11-29 00:11:21,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8721174004192872 [2023-11-29 00:11:21,018 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 416 transitions. [2023-11-29 00:11:21,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 416 transitions. [2023-11-29 00:11:21,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:11:21,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 416 transitions. [2023-11-29 00:11:21,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 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) [2023-11-29 00:11:21,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 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) [2023-11-29 00:11:21,021 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 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) [2023-11-29 00:11:21,021 INFO L175 Difference]: Start difference. First operand has 153 places, 276 transitions, 1830 flow. Second operand 3 states and 416 transitions. [2023-11-29 00:11:21,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 131 transitions, 499 flow [2023-11-29 00:11:21,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 131 transitions, 355 flow, removed 60 selfloop flow, removed 10 redundant places. [2023-11-29 00:11:21,027 INFO L231 Difference]: Finished difference. Result has 137 places, 128 transitions, 318 flow [2023-11-29 00:11:21,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=318, PETRI_PLACES=137, PETRI_TRANSITIONS=128} [2023-11-29 00:11:21,028 INFO L281 CegarLoopForPetriNet]: 159 programPoint places, -22 predicate places. [2023-11-29 00:11:21,028 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 128 transitions, 318 flow [2023-11-29 00:11:21,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 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) [2023-11-29 00:11:21,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:11:21,029 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:11:21,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 00:11:21,029 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-29 00:11:21,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:11:21,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1671901014, now seen corresponding path program 1 times [2023-11-29 00:11:21,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:11:21,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105541050] [2023-11-29 00:11:21,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:21,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:11:21,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:21,063 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 00:11:21,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:11:21,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105541050] [2023-11-29 00:11:21,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105541050] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:11:21,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:11:21,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:11:21,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470151508] [2023-11-29 00:11:21,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:11:21,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:11:21,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:11:21,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:11:21,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:11:21,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 159 [2023-11-29 00:11:21,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 128 transitions, 318 flow. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 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) [2023-11-29 00:11:21,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:11:21,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 159 [2023-11-29 00:11:21,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:11:21,238 INFO L124 PetriNetUnfolderBase]: 114/1182 cut-off events. [2023-11-29 00:11:21,238 INFO L125 PetriNetUnfolderBase]: For 434/434 co-relation queries the response was YES. [2023-11-29 00:11:21,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2046 conditions, 1182 events. 114/1182 cut-off events. For 434/434 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 8560 event pairs, 90 based on Foata normal form. 0/1098 useless extension candidates. Maximal degree in co-relation 1945. Up to 345 conditions per place. [2023-11-29 00:11:21,244 INFO L140 encePairwiseOnDemand]: 156/159 looper letters, 29 selfloop transitions, 3 changer transitions 0/128 dead transitions. [2023-11-29 00:11:21,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 128 transitions, 387 flow [2023-11-29 00:11:21,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:11:21,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:11:21,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 380 transitions. [2023-11-29 00:11:21,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7966457023060797 [2023-11-29 00:11:21,247 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 380 transitions. [2023-11-29 00:11:21,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 380 transitions. [2023-11-29 00:11:21,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:11:21,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 380 transitions. [2023-11-29 00:11:21,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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) [2023-11-29 00:11:21,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 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) [2023-11-29 00:11:21,250 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 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) [2023-11-29 00:11:21,250 INFO L175 Difference]: Start difference. First operand has 137 places, 128 transitions, 318 flow. Second operand 3 states and 380 transitions. [2023-11-29 00:11:21,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 128 transitions, 387 flow [2023-11-29 00:11:21,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 128 transitions, 379 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:11:21,254 INFO L231 Difference]: Finished difference. Result has 137 places, 127 transitions, 314 flow [2023-11-29 00:11:21,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=314, PETRI_PLACES=137, PETRI_TRANSITIONS=127} [2023-11-29 00:11:21,255 INFO L281 CegarLoopForPetriNet]: 159 programPoint places, -22 predicate places. [2023-11-29 00:11:21,255 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 127 transitions, 314 flow [2023-11-29 00:11:21,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 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) [2023-11-29 00:11:21,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:11:21,255 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:11:21,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 00:11:21,256 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-29 00:11:21,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:11:21,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1925437100, now seen corresponding path program 1 times [2023-11-29 00:11:21,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:11:21,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618014733] [2023-11-29 00:11:21,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:21,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:11:21,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:21,291 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 00:11:21,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:11:21,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618014733] [2023-11-29 00:11:21,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618014733] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:11:21,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:11:21,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:11:21,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008414548] [2023-11-29 00:11:21,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:11:21,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:11:21,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:11:21,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:11:21,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:11:21,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 159 [2023-11-29 00:11:21,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 127 transitions, 314 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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) [2023-11-29 00:11:21,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:11:21,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 159 [2023-11-29 00:11:21,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:11:21,475 INFO L124 PetriNetUnfolderBase]: 114/1170 cut-off events. [2023-11-29 00:11:21,475 INFO L125 PetriNetUnfolderBase]: For 409/409 co-relation queries the response was YES. [2023-11-29 00:11:21,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2010 conditions, 1170 events. 114/1170 cut-off events. For 409/409 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 8424 event pairs, 90 based on Foata normal form. 0/1099 useless extension candidates. Maximal degree in co-relation 1909. Up to 345 conditions per place. [2023-11-29 00:11:21,479 INFO L140 encePairwiseOnDemand]: 156/159 looper letters, 30 selfloop transitions, 2 changer transitions 0/127 dead transitions. [2023-11-29 00:11:21,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 127 transitions, 383 flow [2023-11-29 00:11:21,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:11:21,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:11:21,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 380 transitions. [2023-11-29 00:11:21,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7966457023060797 [2023-11-29 00:11:21,481 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 380 transitions. [2023-11-29 00:11:21,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 380 transitions. [2023-11-29 00:11:21,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:11:21,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 380 transitions. [2023-11-29 00:11:21,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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) [2023-11-29 00:11:21,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 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) [2023-11-29 00:11:21,484 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 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) [2023-11-29 00:11:21,484 INFO L175 Difference]: Start difference. First operand has 137 places, 127 transitions, 314 flow. Second operand 3 states and 380 transitions. [2023-11-29 00:11:21,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 127 transitions, 383 flow [2023-11-29 00:11:21,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 127 transitions, 377 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:11:21,488 INFO L231 Difference]: Finished difference. Result has 136 places, 126 transitions, 310 flow [2023-11-29 00:11:21,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=310, PETRI_PLACES=136, PETRI_TRANSITIONS=126} [2023-11-29 00:11:21,489 INFO L281 CegarLoopForPetriNet]: 159 programPoint places, -23 predicate places. [2023-11-29 00:11:21,490 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 126 transitions, 310 flow [2023-11-29 00:11:21,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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) [2023-11-29 00:11:21,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:11:21,490 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:11:21,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 00:11:21,491 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-29 00:11:21,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:11:21,491 INFO L85 PathProgramCache]: Analyzing trace with hash -329493782, now seen corresponding path program 1 times [2023-11-29 00:11:21,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:11:21,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066948408] [2023-11-29 00:11:21,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:21,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:11:21,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:11:21,506 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 00:11:21,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:11:21,521 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 00:11:21,521 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 00:11:21,521 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2023-11-29 00:11:21,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2023-11-29 00:11:21,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2023-11-29 00:11:21,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 16 remaining) [2023-11-29 00:11:21,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2023-11-29 00:11:21,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 16 remaining) [2023-11-29 00:11:21,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 16 remaining) [2023-11-29 00:11:21,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2023-11-29 00:11:21,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2023-11-29 00:11:21,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2023-11-29 00:11:21,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2023-11-29 00:11:21,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2023-11-29 00:11:21,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2023-11-29 00:11:21,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2023-11-29 00:11:21,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2023-11-29 00:11:21,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2023-11-29 00:11:21,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 00:11:21,523 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:11:21,524 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 00:11:21,524 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-11-29 00:11:21,554 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 00:11:21,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 191 places, 191 transitions, 422 flow [2023-11-29 00:11:21,589 INFO L124 PetriNetUnfolderBase]: 16/254 cut-off events. [2023-11-29 00:11:21,589 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-29 00:11:21,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 254 events. 16/254 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 742 event pairs, 0 based on Foata normal form. 0/217 useless extension candidates. Maximal degree in co-relation 222. Up to 12 conditions per place. [2023-11-29 00:11:21,590 INFO L82 GeneralOperation]: Start removeDead. Operand has 191 places, 191 transitions, 422 flow [2023-11-29 00:11:21,592 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 191 transitions, 422 flow [2023-11-29 00:11:21,592 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:11:21,593 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@2c91e5c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:11:21,593 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-11-29 00:11:21,596 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 00:11:21,596 INFO L124 PetriNetUnfolderBase]: 2/46 cut-off events. [2023-11-29 00:11:21,596 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 00:11:21,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:11:21,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:11:21,596 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 15 more)] === [2023-11-29 00:11:21,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:11:21,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1970903690, now seen corresponding path program 1 times [2023-11-29 00:11:21,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:11:21,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134907478] [2023-11-29 00:11:21,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:21,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:11:21,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:21,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:11:21,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:11:21,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134907478] [2023-11-29 00:11:21,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134907478] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:11:21,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:11:21,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:11:21,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625614380] [2023-11-29 00:11:21,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:11:21,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:11:21,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:11:21,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:11:21,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:11:21,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 191 [2023-11-29 00:11:21,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 191 transitions, 422 flow. Second operand has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 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) [2023-11-29 00:11:21,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:11:21,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 191 [2023-11-29 00:11:21,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:11:37,676 INFO L124 PetriNetUnfolderBase]: 60315/137371 cut-off events. [2023-11-29 00:11:37,676 INFO L125 PetriNetUnfolderBase]: For 43154/43154 co-relation queries the response was YES. [2023-11-29 00:11:38,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234061 conditions, 137371 events. 60315/137371 cut-off events. For 43154/43154 co-relation queries the response was YES. Maximal size of possible extension queue 3704. Compared 1788489 event pairs, 45964 based on Foata normal form. 42836/162930 useless extension candidates. Maximal degree in co-relation 181097. Up to 69791 conditions per place. [2023-11-29 00:11:39,478 INFO L140 encePairwiseOnDemand]: 163/191 looper letters, 45 selfloop transitions, 15 changer transitions 0/185 dead transitions. [2023-11-29 00:11:39,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 185 transitions, 562 flow [2023-11-29 00:11:39,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:11:39,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:11:39,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 503 transitions. [2023-11-29 00:11:39,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8778359511343804 [2023-11-29 00:11:39,480 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 503 transitions. [2023-11-29 00:11:39,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 503 transitions. [2023-11-29 00:11:39,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:11:39,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 503 transitions. [2023-11-29 00:11:39,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 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) [2023-11-29 00:11:39,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:39,484 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:39,484 INFO L175 Difference]: Start difference. First operand has 191 places, 191 transitions, 422 flow. Second operand 3 states and 503 transitions. [2023-11-29 00:11:39,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 185 transitions, 562 flow [2023-11-29 00:11:39,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 185 transitions, 538 flow, removed 12 selfloop flow, removed 0 redundant places. [2023-11-29 00:11:39,496 INFO L231 Difference]: Finished difference. Result has 174 places, 173 transitions, 464 flow [2023-11-29 00:11:39,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=464, PETRI_PLACES=174, PETRI_TRANSITIONS=173} [2023-11-29 00:11:39,496 INFO L281 CegarLoopForPetriNet]: 191 programPoint places, -17 predicate places. [2023-11-29 00:11:39,497 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 173 transitions, 464 flow [2023-11-29 00:11:39,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 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) [2023-11-29 00:11:39,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:11:39,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:11:39,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 00:11:39,497 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 15 more)] === [2023-11-29 00:11:39,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:11:39,498 INFO L85 PathProgramCache]: Analyzing trace with hash -250661678, now seen corresponding path program 1 times [2023-11-29 00:11:39,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:11:39,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931229540] [2023-11-29 00:11:39,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:39,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:11:39,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:39,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:11:39,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:11:39,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931229540] [2023-11-29 00:11:39,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931229540] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:11:39,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:11:39,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:11:39,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572418162] [2023-11-29 00:11:39,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:11:39,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:11:39,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:11:39,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:11:39,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:11:39,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 191 [2023-11-29 00:11:39,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 173 transitions, 464 flow. Second operand has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 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) [2023-11-29 00:11:39,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:11:39,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 191 [2023-11-29 00:11:39,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:12:02,724 INFO L124 PetriNetUnfolderBase]: 81482/178268 cut-off events. [2023-11-29 00:12:02,724 INFO L125 PetriNetUnfolderBase]: For 58377/59302 co-relation queries the response was YES. [2023-11-29 00:12:03,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 360568 conditions, 178268 events. 81482/178268 cut-off events. For 58377/59302 co-relation queries the response was YES. Maximal size of possible extension queue 4868. Compared 2326407 event pairs, 57789 based on Foata normal form. 0/155253 useless extension candidates. Maximal degree in co-relation 360446. Up to 93023 conditions per place. [2023-11-29 00:12:04,815 INFO L140 encePairwiseOnDemand]: 175/191 looper letters, 57 selfloop transitions, 15 changer transitions 0/199 dead transitions. [2023-11-29 00:12:04,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 199 transitions, 704 flow [2023-11-29 00:12:04,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:12:04,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:12:04,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 481 transitions. [2023-11-29 00:12:04,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8394415357766143 [2023-11-29 00:12:04,817 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 481 transitions. [2023-11-29 00:12:04,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 481 transitions. [2023-11-29 00:12:04,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:12:04,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 481 transitions. [2023-11-29 00:12:04,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 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) [2023-11-29 00:12:04,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:12:04,821 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:12:04,821 INFO L175 Difference]: Start difference. First operand has 174 places, 173 transitions, 464 flow. Second operand 3 states and 481 transitions. [2023-11-29 00:12:04,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 199 transitions, 704 flow [2023-11-29 00:12:05,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 199 transitions, 674 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:12:05,495 INFO L231 Difference]: Finished difference. Result has 176 places, 187 transitions, 576 flow [2023-11-29 00:12:05,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=576, PETRI_PLACES=176, PETRI_TRANSITIONS=187} [2023-11-29 00:12:05,496 INFO L281 CegarLoopForPetriNet]: 191 programPoint places, -15 predicate places. [2023-11-29 00:12:05,496 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 187 transitions, 576 flow [2023-11-29 00:12:05,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 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) [2023-11-29 00:12:05,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:12:05,497 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:12:05,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 00:12:05,497 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 15 more)] === [2023-11-29 00:12:05,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:12:05,497 INFO L85 PathProgramCache]: Analyzing trace with hash -447157567, now seen corresponding path program 1 times [2023-11-29 00:12:05,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:12:05,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846078589] [2023-11-29 00:12:05,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:12:05,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:12:05,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:12:05,521 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 00:12:05,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:12:05,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846078589] [2023-11-29 00:12:05,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846078589] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:12:05,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:12:05,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:12:05,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481834647] [2023-11-29 00:12:05,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:12:05,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:12:05,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:12:05,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:12:05,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:12:05,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 191 [2023-11-29 00:12:05,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 187 transitions, 576 flow. Second operand has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 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) [2023-11-29 00:12:05,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:12:05,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 191 [2023-11-29 00:12:05,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand