./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-race-challenges/thread-join-binomial-race-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 30e01a73 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_71f9ef56-4d43-418e-b118-2dc2f39af571/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f9ef56-4d43-418e-b118-2dc2f39af571/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f9ef56-4d43-418e-b118-2dc2f39af571/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f9ef56-4d43-418e-b118-2dc2f39af571/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-race-challenges/thread-join-binomial-race-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f9ef56-4d43-418e-b118-2dc2f39af571/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f9ef56-4d43-418e-b118-2dc2f39af571/bin/uautomizer-verify-zZY32mL2XJ --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 9c17f10721ad43a689085e56bbab66351be2a01da9f0c20359ae30ab37e92dbe --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:33:47,895 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:33:48,015 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f9ef56-4d43-418e-b118-2dc2f39af571/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-23 21:33:48,023 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:33:48,025 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:33:48,063 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:33:48,064 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:33:48,065 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:33:48,066 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:33:48,071 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:33:48,072 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:33:48,073 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:33:48,073 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 21:33:48,075 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:33:48,076 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:33:48,076 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:33:48,077 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:33:48,077 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:33:48,077 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:33:48,078 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:33:48,079 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:33:48,079 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:33:48,080 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-23 21:33:48,080 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:33:48,080 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:33:48,081 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:33:48,081 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:33:48,082 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:33:48,083 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:33:48,083 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:33:48,084 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:33:48,085 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:33:48,085 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:33:48,085 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:33:48,085 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 21:33:48,086 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:33:48,086 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:33:48,086 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 21:33:48,086 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:33:48,087 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 21:33:48,087 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:33:48,087 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_71f9ef56-4d43-418e-b118-2dc2f39af571/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f9ef56-4d43-418e-b118-2dc2f39af571/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c17f10721ad43a689085e56bbab66351be2a01da9f0c20359ae30ab37e92dbe [2023-11-23 21:33:48,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:33:48,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:33:48,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:33:48,448 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:33:48,449 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:33:48,450 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f9ef56-4d43-418e-b118-2dc2f39af571/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/pthread-race-challenges/thread-join-binomial-race-2.i [2023-11-23 21:33:51,961 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:33:52,423 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:33:52,424 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f9ef56-4d43-418e-b118-2dc2f39af571/sv-benchmarks/c/pthread-race-challenges/thread-join-binomial-race-2.i [2023-11-23 21:33:52,455 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f9ef56-4d43-418e-b118-2dc2f39af571/bin/uautomizer-verify-zZY32mL2XJ/data/d6f2f8a39/e9942e4393c04bf59398bc39ab5e1bf6/FLAGfbf1a1892 [2023-11-23 21:33:52,479 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f9ef56-4d43-418e-b118-2dc2f39af571/bin/uautomizer-verify-zZY32mL2XJ/data/d6f2f8a39/e9942e4393c04bf59398bc39ab5e1bf6 [2023-11-23 21:33:52,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:33:52,488 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:33:52,492 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:33:52,492 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:33:52,499 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:33:52,500 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:33:52" (1/1) ... [2023-11-23 21:33:52,501 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28876cfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:52, skipping insertion in model container [2023-11-23 21:33:52,502 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:33:52" (1/1) ... [2023-11-23 21:33:52,577 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:33:52,825 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 21:33:53,255 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:33:53,281 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:33:53,321 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 21:33:53,390 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:33:53,466 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:33:53,474 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:33:53,475 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:53 WrapperNode [2023-11-23 21:33:53,475 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:33:53,476 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:33:53,476 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:33:53,477 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:33:53,485 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:53" (1/1) ... [2023-11-23 21:33:53,554 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:53" (1/1) ... [2023-11-23 21:33:53,606 INFO L138 Inliner]: procedures = 269, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 93 [2023-11-23 21:33:53,606 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:33:53,611 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:33:53,611 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:33:53,612 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:33:53,623 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:53" (1/1) ... [2023-11-23 21:33:53,624 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:53" (1/1) ... [2023-11-23 21:33:53,643 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:53" (1/1) ... [2023-11-23 21:33:53,653 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:53" (1/1) ... [2023-11-23 21:33:53,666 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:53" (1/1) ... [2023-11-23 21:33:53,680 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:53" (1/1) ... [2023-11-23 21:33:53,683 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:53" (1/1) ... [2023-11-23 21:33:53,698 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:53" (1/1) ... [2023-11-23 21:33:53,703 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:33:53,717 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:33:53,717 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:33:53,717 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:33:53,718 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:53" (1/1) ... [2023-11-23 21:33:53,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:33:53,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f9ef56-4d43-418e-b118-2dc2f39af571/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:33:53,755 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f9ef56-4d43-418e-b118-2dc2f39af571/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:33:53,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f9ef56-4d43-418e-b118-2dc2f39af571/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:33:53,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:33:53,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:33:53,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:33:53,805 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-23 21:33:53,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:33:53,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:33:53,807 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-23 21:33:53,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:33:53,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:33:53,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:33:53,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:33:53,810 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2023-11-23 21:33:53,810 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2023-11-23 21:33:53,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:33:53,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:33:53,812 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 21:33:53,994 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:33:53,996 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:33:54,470 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:33:54,498 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:33:54,498 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 21:33:54,500 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:33:54 BoogieIcfgContainer [2023-11-23 21:33:54,500 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:33:54,502 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:33:54,503 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:33:54,506 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:33:54,506 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:33:52" (1/3) ... [2023-11-23 21:33:54,507 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a98c72b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:33:54, skipping insertion in model container [2023-11-23 21:33:54,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:53" (2/3) ... [2023-11-23 21:33:54,508 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a98c72b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:33:54, skipping insertion in model container [2023-11-23 21:33:54,508 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:33:54" (3/3) ... [2023-11-23 21:33:54,510 INFO L112 eAbstractionObserver]: Analyzing ICFG thread-join-binomial-race-2.i [2023-11-23 21:33:54,519 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 21:33:54,528 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:33:54,528 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-23 21:33:54,529 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 21:33:54,652 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-23 21:33:54,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 239 transitions, 491 flow [2023-11-23 21:33:54,792 INFO L124 PetriNetUnfolderBase]: 10/204 cut-off events. [2023-11-23 21:33:54,792 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-23 21:33:54,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 204 events. 10/204 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 266 event pairs, 0 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 101. Up to 4 conditions per place. [2023-11-23 21:33:54,801 INFO L82 GeneralOperation]: Start removeDead. Operand has 225 places, 239 transitions, 491 flow [2023-11-23 21:33:54,808 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 165 places, 171 transitions, 349 flow [2023-11-23 21:33:54,819 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:33:54,827 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;@64accde2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:33:54,827 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-11-23 21:33:54,853 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 21:33:54,854 INFO L124 PetriNetUnfolderBase]: 0/21 cut-off events. [2023-11-23 21:33:54,854 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 21:33:54,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:33:54,855 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] [2023-11-23 21:33:54,855 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-23 21:33:54,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:54,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1697247302, now seen corresponding path program 1 times [2023-11-23 21:33:54,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:33:54,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79089236] [2023-11-23 21:33:54,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:54,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:33:54,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:55,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:55,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:33:55,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79089236] [2023-11-23 21:33:55,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79089236] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:55,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:55,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:33:55,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063504979] [2023-11-23 21:33:55,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:55,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:33:55,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:33:55,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:33:55,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:33:55,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 239 [2023-11-23 21:33:55,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 171 transitions, 349 flow. Second operand has 3 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 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) [2023-11-23 21:33:55,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:33:55,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 239 [2023-11-23 21:33:55,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:33:55,429 INFO L124 PetriNetUnfolderBase]: 5/193 cut-off events. [2023-11-23 21:33:55,429 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-23 21:33:55,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 193 events. 5/193 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 231 event pairs, 0 based on Foata normal form. 6/175 useless extension candidates. Maximal degree in co-relation 101. Up to 12 conditions per place. [2023-11-23 21:33:55,437 INFO L140 encePairwiseOnDemand]: 232/239 looper letters, 11 selfloop transitions, 2 changer transitions 1/166 dead transitions. [2023-11-23 21:33:55,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 166 transitions, 365 flow [2023-11-23 21:33:55,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:33:55,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:33:55,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 663 transitions. [2023-11-23 21:33:55,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9246861924686193 [2023-11-23 21:33:55,472 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 663 transitions. [2023-11-23 21:33:55,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 663 transitions. [2023-11-23 21:33:55,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:33:55,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 663 transitions. [2023-11-23 21:33:55,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 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) [2023-11-23 21:33:55,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 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) [2023-11-23 21:33:55,506 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 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) [2023-11-23 21:33:55,512 INFO L175 Difference]: Start difference. First operand has 165 places, 171 transitions, 349 flow. Second operand 3 states and 663 transitions. [2023-11-23 21:33:55,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 166 transitions, 365 flow [2023-11-23 21:33:55,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 166 transitions, 365 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-23 21:33:55,528 INFO L231 Difference]: Finished difference. Result has 166 places, 165 transitions, 341 flow [2023-11-23 21:33:55,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=341, PETRI_PLACES=166, PETRI_TRANSITIONS=165} [2023-11-23 21:33:55,535 INFO L281 CegarLoopForPetriNet]: 165 programPoint places, 1 predicate places. [2023-11-23 21:33:55,535 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 165 transitions, 341 flow [2023-11-23 21:33:55,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 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) [2023-11-23 21:33:55,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:33:55,537 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] [2023-11-23 21:33:55,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:33:55,538 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-23 21:33:55,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:55,539 INFO L85 PathProgramCache]: Analyzing trace with hash -481627170, now seen corresponding path program 1 times [2023-11-23 21:33:55,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:33:55,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176927658] [2023-11-23 21:33:55,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:55,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:33:55,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:55,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:55,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:33:55,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176927658] [2023-11-23 21:33:55,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176927658] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:55,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:55,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:33:55,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980750237] [2023-11-23 21:33:55,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:55,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:33:55,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:33:55,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:33:55,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:33:55,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 239 [2023-11-23 21:33:55,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 165 transitions, 341 flow. Second operand has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:55,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:33:55,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 239 [2023-11-23 21:33:55,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:33:55,797 INFO L124 PetriNetUnfolderBase]: 5/188 cut-off events. [2023-11-23 21:33:55,797 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-23 21:33:55,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 188 events. 5/188 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 227 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 179. Up to 12 conditions per place. [2023-11-23 21:33:55,799 INFO L140 encePairwiseOnDemand]: 234/239 looper letters, 12 selfloop transitions, 1 changer transitions 0/161 dead transitions. [2023-11-23 21:33:55,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 161 transitions, 359 flow [2023-11-23 21:33:55,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:33:55,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:33:55,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 650 transitions. [2023-11-23 21:33:55,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9065550906555091 [2023-11-23 21:33:55,804 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 650 transitions. [2023-11-23 21:33:55,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 650 transitions. [2023-11-23 21:33:55,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:33:55,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 650 transitions. [2023-11-23 21:33:55,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 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) [2023-11-23 21:33:55,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 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) [2023-11-23 21:33:55,813 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 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) [2023-11-23 21:33:55,813 INFO L175 Difference]: Start difference. First operand has 166 places, 165 transitions, 341 flow. Second operand 3 states and 650 transitions. [2023-11-23 21:33:55,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 161 transitions, 359 flow [2023-11-23 21:33:55,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 161 transitions, 355 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 21:33:55,824 INFO L231 Difference]: Finished difference. Result has 161 places, 161 transitions, 331 flow [2023-11-23 21:33:55,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=331, PETRI_PLACES=161, PETRI_TRANSITIONS=161} [2023-11-23 21:33:55,826 INFO L281 CegarLoopForPetriNet]: 165 programPoint places, -4 predicate places. [2023-11-23 21:33:55,826 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 161 transitions, 331 flow [2023-11-23 21:33:55,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:55,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:33:55,828 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, 1, 1, 1, 1, 1] [2023-11-23 21:33:55,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:33:55,829 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-23 21:33:55,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:55,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1521003898, now seen corresponding path program 1 times [2023-11-23 21:33:55,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:33:55,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446878254] [2023-11-23 21:33:55,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:55,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:33:55,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:56,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:56,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:33:56,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446878254] [2023-11-23 21:33:56,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446878254] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:56,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:56,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:33:56,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577324053] [2023-11-23 21:33:56,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:56,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:33:56,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:33:56,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:33:56,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:33:56,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 239 [2023-11-23 21:33:56,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 161 transitions, 331 flow. Second operand has 6 states, 6 states have (on average 180.33333333333334) internal successors, (1082), 6 states have internal predecessors, (1082), 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) [2023-11-23 21:33:56,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:33:56,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 239 [2023-11-23 21:33:56,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:33:57,285 INFO L124 PetriNetUnfolderBase]: 229/1209 cut-off events. [2023-11-23 21:33:57,285 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-23 21:33:57,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1580 conditions, 1209 events. 229/1209 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 7687 event pairs, 154 based on Foata normal form. 0/1083 useless extension candidates. Maximal degree in co-relation 1548. Up to 359 conditions per place. [2023-11-23 21:33:57,298 INFO L140 encePairwiseOnDemand]: 233/239 looper letters, 36 selfloop transitions, 5 changer transitions 0/160 dead transitions. [2023-11-23 21:33:57,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 160 transitions, 411 flow [2023-11-23 21:33:57,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:33:57,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-23 21:33:57,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1116 transitions. [2023-11-23 21:33:57,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7782426778242678 [2023-11-23 21:33:57,305 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1116 transitions. [2023-11-23 21:33:57,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1116 transitions. [2023-11-23 21:33:57,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:33:57,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1116 transitions. [2023-11-23 21:33:57,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 186.0) internal successors, (1116), 6 states have internal predecessors, (1116), 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) [2023-11-23 21:33:57,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 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) [2023-11-23 21:33:57,316 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 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) [2023-11-23 21:33:57,316 INFO L175 Difference]: Start difference. First operand has 161 places, 161 transitions, 331 flow. Second operand 6 states and 1116 transitions. [2023-11-23 21:33:57,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 160 transitions, 411 flow [2023-11-23 21:33:57,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 160 transitions, 410 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 21:33:57,324 INFO L231 Difference]: Finished difference. Result has 164 places, 160 transitions, 338 flow [2023-11-23 21:33:57,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=338, PETRI_PLACES=164, PETRI_TRANSITIONS=160} [2023-11-23 21:33:57,326 INFO L281 CegarLoopForPetriNet]: 165 programPoint places, -1 predicate places. [2023-11-23 21:33:57,327 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 160 transitions, 338 flow [2023-11-23 21:33:57,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 180.33333333333334) internal successors, (1082), 6 states have internal predecessors, (1082), 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) [2023-11-23 21:33:57,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:33:57,328 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:33:57,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:33:57,329 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-23 21:33:57,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:57,332 INFO L85 PathProgramCache]: Analyzing trace with hash 296842153, now seen corresponding path program 1 times [2023-11-23 21:33:57,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:33:57,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820490294] [2023-11-23 21:33:57,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:57,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:33:57,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:57,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:57,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:33:57,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820490294] [2023-11-23 21:33:57,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820490294] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:57,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:57,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:33:57,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770145388] [2023-11-23 21:33:57,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:57,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:33:57,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:33:57,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:33:57,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:33:58,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 239 [2023-11-23 21:33:58,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 160 transitions, 338 flow. Second operand has 6 states, 6 states have (on average 192.83333333333334) internal successors, (1157), 6 states have internal predecessors, (1157), 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) [2023-11-23 21:33:58,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:33:58,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 239 [2023-11-23 21:33:58,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:33:58,450 INFO L124 PetriNetUnfolderBase]: 85/512 cut-off events. [2023-11-23 21:33:58,450 INFO L125 PetriNetUnfolderBase]: For 5/9 co-relation queries the response was YES. [2023-11-23 21:33:58,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 705 conditions, 512 events. 85/512 cut-off events. For 5/9 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2237 event pairs, 70 based on Foata normal form. 0/455 useless extension candidates. Maximal degree in co-relation 674. Up to 168 conditions per place. [2023-11-23 21:33:58,457 INFO L140 encePairwiseOnDemand]: 227/239 looper letters, 30 selfloop transitions, 8 changer transitions 0/164 dead transitions. [2023-11-23 21:33:58,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 164 transitions, 422 flow [2023-11-23 21:33:58,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:33:58,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-23 21:33:58,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1188 transitions. [2023-11-23 21:33:58,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8284518828451883 [2023-11-23 21:33:58,462 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1188 transitions. [2023-11-23 21:33:58,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1188 transitions. [2023-11-23 21:33:58,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:33:58,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1188 transitions. [2023-11-23 21:33:58,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 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) [2023-11-23 21:33:58,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 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) [2023-11-23 21:33:58,474 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 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) [2023-11-23 21:33:58,474 INFO L175 Difference]: Start difference. First operand has 164 places, 160 transitions, 338 flow. Second operand 6 states and 1188 transitions. [2023-11-23 21:33:58,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 164 transitions, 422 flow [2023-11-23 21:33:58,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 164 transitions, 412 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-23 21:33:58,480 INFO L231 Difference]: Finished difference. Result has 164 places, 164 transitions, 382 flow [2023-11-23 21:33:58,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=382, PETRI_PLACES=164, PETRI_TRANSITIONS=164} [2023-11-23 21:33:58,482 INFO L281 CegarLoopForPetriNet]: 165 programPoint places, -1 predicate places. [2023-11-23 21:33:58,482 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 164 transitions, 382 flow [2023-11-23 21:33:58,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.83333333333334) internal successors, (1157), 6 states have internal predecessors, (1157), 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) [2023-11-23 21:33:58,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:33:58,484 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:33:58,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:33:58,484 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-23 21:33:58,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:58,486 INFO L85 PathProgramCache]: Analyzing trace with hash 2128443167, now seen corresponding path program 1 times [2023-11-23 21:33:58,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:33:58,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244330498] [2023-11-23 21:33:58,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:58,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:33:58,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:58,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:58,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:33:58,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244330498] [2023-11-23 21:33:58,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244330498] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:58,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:58,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:33:58,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180377084] [2023-11-23 21:33:58,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:58,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:33:58,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:33:58,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:33:58,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:33:59,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 239 [2023-11-23 21:33:59,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 164 transitions, 382 flow. Second operand has 6 states, 6 states have (on average 214.83333333333334) internal successors, (1289), 6 states have internal predecessors, (1289), 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) [2023-11-23 21:33:59,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:33:59,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 239 [2023-11-23 21:33:59,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:33:59,640 INFO L124 PetriNetUnfolderBase]: 22/262 cut-off events. [2023-11-23 21:33:59,640 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-23 21:33:59,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 343 conditions, 262 events. 22/262 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 656 event pairs, 2 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 309. Up to 16 conditions per place. [2023-11-23 21:33:59,648 INFO L140 encePairwiseOnDemand]: 233/239 looper letters, 19 selfloop transitions, 5 changer transitions 4/171 dead transitions. [2023-11-23 21:33:59,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 171 transitions, 444 flow [2023-11-23 21:33:59,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:33:59,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-23 21:33:59,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1303 transitions. [2023-11-23 21:33:59,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9086471408647141 [2023-11-23 21:33:59,653 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1303 transitions. [2023-11-23 21:33:59,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1303 transitions. [2023-11-23 21:33:59,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:33:59,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1303 transitions. [2023-11-23 21:33:59,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 217.16666666666666) internal successors, (1303), 6 states have internal predecessors, (1303), 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) [2023-11-23 21:33:59,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 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) [2023-11-23 21:33:59,664 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 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) [2023-11-23 21:33:59,664 INFO L175 Difference]: Start difference. First operand has 164 places, 164 transitions, 382 flow. Second operand 6 states and 1303 transitions. [2023-11-23 21:33:59,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 171 transitions, 444 flow [2023-11-23 21:33:59,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 171 transitions, 444 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-23 21:33:59,670 INFO L231 Difference]: Finished difference. Result has 168 places, 159 transitions, 367 flow [2023-11-23 21:33:59,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=367, PETRI_PLACES=168, PETRI_TRANSITIONS=159} [2023-11-23 21:33:59,673 INFO L281 CegarLoopForPetriNet]: 165 programPoint places, 3 predicate places. [2023-11-23 21:33:59,673 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 159 transitions, 367 flow [2023-11-23 21:33:59,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 214.83333333333334) internal successors, (1289), 6 states have internal predecessors, (1289), 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) [2023-11-23 21:33:59,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:33:59,674 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, 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] [2023-11-23 21:33:59,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:33:59,675 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-23 21:33:59,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:59,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1938478496, now seen corresponding path program 1 times [2023-11-23 21:33:59,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:33:59,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88585008] [2023-11-23 21:33:59,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:59,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:33:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:59,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:59,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:33:59,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88585008] [2023-11-23 21:33:59,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88585008] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:59,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:59,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:33:59,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621048100] [2023-11-23 21:33:59,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:59,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:33:59,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:33:59,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:33:59,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:33:59,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 239 [2023-11-23 21:33:59,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 159 transitions, 367 flow. Second operand has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 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) [2023-11-23 21:33:59,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:33:59,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 239 [2023-11-23 21:33:59,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:33:59,805 INFO L124 PetriNetUnfolderBase]: 5/167 cut-off events. [2023-11-23 21:33:59,805 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-23 21:33:59,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 167 events. 5/167 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 159 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 175. Up to 8 conditions per place. [2023-11-23 21:33:59,806 INFO L140 encePairwiseOnDemand]: 236/239 looper letters, 7 selfloop transitions, 2 changer transitions 0/158 dead transitions. [2023-11-23 21:33:59,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 158 transitions, 383 flow [2023-11-23 21:33:59,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:33:59,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:33:59,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 673 transitions. [2023-11-23 21:33:59,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9386331938633193 [2023-11-23 21:33:59,810 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 673 transitions. [2023-11-23 21:33:59,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 673 transitions. [2023-11-23 21:33:59,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:33:59,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 673 transitions. [2023-11-23 21:33:59,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 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) [2023-11-23 21:33:59,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 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) [2023-11-23 21:33:59,816 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 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) [2023-11-23 21:33:59,816 INFO L175 Difference]: Start difference. First operand has 168 places, 159 transitions, 367 flow. Second operand 3 states and 673 transitions. [2023-11-23 21:33:59,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 158 transitions, 383 flow [2023-11-23 21:33:59,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 158 transitions, 367 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-23 21:33:59,823 INFO L231 Difference]: Finished difference. Result has 164 places, 158 transitions, 353 flow [2023-11-23 21:33:59,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=353, PETRI_PLACES=164, PETRI_TRANSITIONS=158} [2023-11-23 21:33:59,826 INFO L281 CegarLoopForPetriNet]: 165 programPoint places, -1 predicate places. [2023-11-23 21:33:59,826 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 158 transitions, 353 flow [2023-11-23 21:33:59,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 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) [2023-11-23 21:33:59,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:33:59,827 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:33:59,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:33:59,828 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-23 21:33:59,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:59,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1149405514, now seen corresponding path program 1 times [2023-11-23 21:33:59,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:33:59,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121291114] [2023-11-23 21:33:59,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:59,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:33:59,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:33:59,886 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:33:59,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:33:59,941 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 21:33:59,941 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:33:59,942 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2023-11-23 21:33:59,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2023-11-23 21:33:59,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2023-11-23 21:33:59,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2023-11-23 21:33:59,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2023-11-23 21:33:59,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2023-11-23 21:33:59,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2023-11-23 21:33:59,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2023-11-23 21:33:59,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2023-11-23 21:33:59,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2023-11-23 21:33:59,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2023-11-23 21:33:59,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (7 of 19 remaining) [2023-11-23 21:33:59,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2023-11-23 21:33:59,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2023-11-23 21:33:59,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2023-11-23 21:33:59,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2023-11-23 21:33:59,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2023-11-23 21:33:59,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2023-11-23 21:33:59,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2023-11-23 21:33:59,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 21:33:59,955 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:33:59,958 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-23 21:33:59,958 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-23 21:34:00,023 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-11-23 21:34:00,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 317 transitions, 668 flow [2023-11-23 21:34:00,169 INFO L124 PetriNetUnfolderBase]: 46/655 cut-off events. [2023-11-23 21:34:00,169 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-23 21:34:00,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 679 conditions, 655 events. 46/655 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 2182 event pairs, 0 based on Foata normal form. 0/555 useless extension candidates. Maximal degree in co-relation 372. Up to 12 conditions per place. [2023-11-23 21:34:00,173 INFO L82 GeneralOperation]: Start removeDead. Operand has 293 places, 317 transitions, 668 flow [2023-11-23 21:34:00,181 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 243 places, 257 transitions, 536 flow [2023-11-23 21:34:00,182 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:34:00,183 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;@64accde2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:34:00,183 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-11-23 21:34:00,185 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 21:34:00,185 INFO L124 PetriNetUnfolderBase]: 0/21 cut-off events. [2023-11-23 21:34:00,185 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 21:34:00,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:34:00,186 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] [2023-11-23 21:34:00,186 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-23 21:34:00,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:34:00,187 INFO L85 PathProgramCache]: Analyzing trace with hash 274639974, now seen corresponding path program 1 times [2023-11-23 21:34:00,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:34:00,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457604350] [2023-11-23 21:34:00,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:34:00,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:34:00,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:00,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:34:00,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:34:00,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457604350] [2023-11-23 21:34:00,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457604350] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:34:00,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:34:00,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:34:00,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249031333] [2023-11-23 21:34:00,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:34:00,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:34:00,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:34:00,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:34:00,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:34:00,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 317 [2023-11-23 21:34:00,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 257 transitions, 536 flow. Second operand has 3 states, 3 states have (on average 283.3333333333333) internal successors, (850), 3 states have internal predecessors, (850), 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) [2023-11-23 21:34:00,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:34:00,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 317 [2023-11-23 21:34:00,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:34:00,605 INFO L124 PetriNetUnfolderBase]: 93/1106 cut-off events. [2023-11-23 21:34:00,606 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2023-11-23 21:34:00,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1248 conditions, 1106 events. 93/1106 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 5318 event pairs, 24 based on Foata normal form. 50/995 useless extension candidates. Maximal degree in co-relation 686. Up to 97 conditions per place. [2023-11-23 21:34:00,619 INFO L140 encePairwiseOnDemand]: 308/317 looper letters, 19 selfloop transitions, 2 changer transitions 1/250 dead transitions. [2023-11-23 21:34:00,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 250 transitions, 564 flow [2023-11-23 21:34:00,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:34:00,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:34:00,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 874 transitions. [2023-11-23 21:34:00,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9190325972660357 [2023-11-23 21:34:00,623 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 874 transitions. [2023-11-23 21:34:00,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 874 transitions. [2023-11-23 21:34:00,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:34:00,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 874 transitions. [2023-11-23 21:34:00,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 291.3333333333333) internal successors, (874), 3 states have internal predecessors, (874), 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) [2023-11-23 21:34:00,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 317.0) internal successors, (1268), 4 states have internal predecessors, (1268), 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) [2023-11-23 21:34:00,635 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 317.0) internal successors, (1268), 4 states have internal predecessors, (1268), 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) [2023-11-23 21:34:00,635 INFO L175 Difference]: Start difference. First operand has 243 places, 257 transitions, 536 flow. Second operand 3 states and 874 transitions. [2023-11-23 21:34:00,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 250 transitions, 564 flow [2023-11-23 21:34:00,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 250 transitions, 564 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-23 21:34:00,643 INFO L231 Difference]: Finished difference. Result has 244 places, 249 transitions, 524 flow [2023-11-23 21:34:00,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=317, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=524, PETRI_PLACES=244, PETRI_TRANSITIONS=249} [2023-11-23 21:34:00,645 INFO L281 CegarLoopForPetriNet]: 243 programPoint places, 1 predicate places. [2023-11-23 21:34:00,646 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 249 transitions, 524 flow [2023-11-23 21:34:00,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 283.3333333333333) internal successors, (850), 3 states have internal predecessors, (850), 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) [2023-11-23 21:34:00,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:34:00,647 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] [2023-11-23 21:34:00,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 21:34:00,647 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-23 21:34:00,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:34:00,648 INFO L85 PathProgramCache]: Analyzing trace with hash 805193918, now seen corresponding path program 1 times [2023-11-23 21:34:00,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:34:00,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63317971] [2023-11-23 21:34:00,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:34:00,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:34:00,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:00,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:34:00,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:34:00,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63317971] [2023-11-23 21:34:00,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63317971] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:34:00,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:34:00,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:34:00,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225023210] [2023-11-23 21:34:00,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:34:00,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:34:00,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:34:00,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:34:00,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:34:00,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 317 [2023-11-23 21:34:00,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 249 transitions, 524 flow. Second operand has 3 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 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) [2023-11-23 21:34:00,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:34:00,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 317 [2023-11-23 21:34:00,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:34:00,965 INFO L124 PetriNetUnfolderBase]: 99/1140 cut-off events. [2023-11-23 21:34:00,966 INFO L125 PetriNetUnfolderBase]: For 105/106 co-relation queries the response was YES. [2023-11-23 21:34:00,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1312 conditions, 1140 events. 99/1140 cut-off events. For 105/106 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 5707 event pairs, 28 based on Foata normal form. 0/987 useless extension candidates. Maximal degree in co-relation 1280. Up to 111 conditions per place. [2023-11-23 21:34:00,980 INFO L140 encePairwiseOnDemand]: 311/317 looper letters, 20 selfloop transitions, 1 changer transitions 0/244 dead transitions. [2023-11-23 21:34:00,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 244 transitions, 556 flow [2023-11-23 21:34:00,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:34:00,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:34:00,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 854 transitions. [2023-11-23 21:34:00,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8980021030494216 [2023-11-23 21:34:00,984 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 854 transitions. [2023-11-23 21:34:00,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 854 transitions. [2023-11-23 21:34:00,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:34:00,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 854 transitions. [2023-11-23 21:34:00,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 284.6666666666667) internal successors, (854), 3 states have internal predecessors, (854), 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) [2023-11-23 21:34:00,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 317.0) internal successors, (1268), 4 states have internal predecessors, (1268), 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) [2023-11-23 21:34:00,992 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 317.0) internal successors, (1268), 4 states have internal predecessors, (1268), 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) [2023-11-23 21:34:00,992 INFO L175 Difference]: Start difference. First operand has 244 places, 249 transitions, 524 flow. Second operand 3 states and 854 transitions. [2023-11-23 21:34:00,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 244 transitions, 556 flow [2023-11-23 21:34:00,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 244 transitions, 552 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 21:34:01,000 INFO L231 Difference]: Finished difference. Result has 238 places, 244 transitions, 512 flow [2023-11-23 21:34:01,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=317, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=512, PETRI_PLACES=238, PETRI_TRANSITIONS=244} [2023-11-23 21:34:01,003 INFO L281 CegarLoopForPetriNet]: 243 programPoint places, -5 predicate places. [2023-11-23 21:34:01,003 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 244 transitions, 512 flow [2023-11-23 21:34:01,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 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) [2023-11-23 21:34:01,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:34:01,004 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, 1, 1, 1, 1, 1] [2023-11-23 21:34:01,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 21:34:01,005 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-23 21:34:01,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:34:01,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1763527270, now seen corresponding path program 1 times [2023-11-23 21:34:01,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:34:01,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503927497] [2023-11-23 21:34:01,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:34:01,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:34:01,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:01,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:34:01,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:34:01,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503927497] [2023-11-23 21:34:01,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503927497] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:34:01,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:34:01,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:34:01,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076218517] [2023-11-23 21:34:01,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:34:01,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:34:01,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:34:01,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:34:01,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:34:01,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 317 [2023-11-23 21:34:01,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 244 transitions, 512 flow. Second operand has 6 states, 6 states have (on average 239.33333333333334) internal successors, (1436), 6 states have internal predecessors, (1436), 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) [2023-11-23 21:34:01,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:34:01,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 317 [2023-11-23 21:34:01,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:34:05,412 INFO L124 PetriNetUnfolderBase]: 5522/15901 cut-off events. [2023-11-23 21:34:05,412 INFO L125 PetriNetUnfolderBase]: For 305/305 co-relation queries the response was YES. [2023-11-23 21:34:05,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23952 conditions, 15901 events. 5522/15901 cut-off events. For 305/305 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 146984 event pairs, 4598 based on Foata normal form. 0/14279 useless extension candidates. Maximal degree in co-relation 23919. Up to 7895 conditions per place. [2023-11-23 21:34:05,554 INFO L140 encePairwiseOnDemand]: 311/317 looper letters, 52 selfloop transitions, 5 changer transitions 0/243 dead transitions. [2023-11-23 21:34:05,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 243 transitions, 624 flow [2023-11-23 21:34:05,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:34:05,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-23 21:34:05,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1486 transitions. [2023-11-23 21:34:05,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7812828601472135 [2023-11-23 21:34:05,561 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1486 transitions. [2023-11-23 21:34:05,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1486 transitions. [2023-11-23 21:34:05,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:34:05,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1486 transitions. [2023-11-23 21:34:05,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 247.66666666666666) internal successors, (1486), 6 states have internal predecessors, (1486), 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) [2023-11-23 21:34:05,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 317.0) internal successors, (2219), 7 states have internal predecessors, (2219), 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) [2023-11-23 21:34:05,574 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 317.0) internal successors, (2219), 7 states have internal predecessors, (2219), 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) [2023-11-23 21:34:05,574 INFO L175 Difference]: Start difference. First operand has 238 places, 244 transitions, 512 flow. Second operand 6 states and 1486 transitions. [2023-11-23 21:34:05,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 243 transitions, 624 flow [2023-11-23 21:34:05,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 243 transitions, 623 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 21:34:05,582 INFO L231 Difference]: Finished difference. Result has 241 places, 243 transitions, 519 flow [2023-11-23 21:34:05,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=317, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=519, PETRI_PLACES=241, PETRI_TRANSITIONS=243} [2023-11-23 21:34:05,584 INFO L281 CegarLoopForPetriNet]: 243 programPoint places, -2 predicate places. [2023-11-23 21:34:05,584 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 243 transitions, 519 flow [2023-11-23 21:34:05,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 239.33333333333334) internal successors, (1436), 6 states have internal predecessors, (1436), 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) [2023-11-23 21:34:05,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:34:05,586 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:34:05,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 21:34:05,586 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-23 21:34:05,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:34:05,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1045083788, now seen corresponding path program 1 times [2023-11-23 21:34:05,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:34:05,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598682059] [2023-11-23 21:34:05,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:34:05,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:34:05,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:05,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:34:05,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:34:05,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598682059] [2023-11-23 21:34:05,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598682059] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:34:05,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:34:05,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:34:05,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386488322] [2023-11-23 21:34:05,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:34:05,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:34:05,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:34:05,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:34:05,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:34:06,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 317 [2023-11-23 21:34:06,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 243 transitions, 519 flow. Second operand has 6 states, 6 states have (on average 254.83333333333334) internal successors, (1529), 6 states have internal predecessors, (1529), 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) [2023-11-23 21:34:06,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:34:06,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 317 [2023-11-23 21:34:06,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:34:08,394 INFO L124 PetriNetUnfolderBase]: 2194/8431 cut-off events. [2023-11-23 21:34:08,394 INFO L125 PetriNetUnfolderBase]: For 292/300 co-relation queries the response was YES. [2023-11-23 21:34:08,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11520 conditions, 8431 events. 2194/8431 cut-off events. For 292/300 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 76487 event pairs, 1540 based on Foata normal form. 0/7425 useless extension candidates. Maximal degree in co-relation 11488. Up to 2944 conditions per place. [2023-11-23 21:34:08,461 INFO L140 encePairwiseOnDemand]: 304/317 looper letters, 41 selfloop transitions, 8 changer transitions 0/246 dead transitions. [2023-11-23 21:34:08,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 246 transitions, 623 flow [2023-11-23 21:34:08,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:34:08,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-23 21:34:08,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1572 transitions. [2023-11-23 21:34:08,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8264984227129337 [2023-11-23 21:34:08,468 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1572 transitions. [2023-11-23 21:34:08,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1572 transitions. [2023-11-23 21:34:08,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:34:08,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1572 transitions. [2023-11-23 21:34:08,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 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) [2023-11-23 21:34:08,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 317.0) internal successors, (2219), 7 states have internal predecessors, (2219), 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) [2023-11-23 21:34:08,482 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 317.0) internal successors, (2219), 7 states have internal predecessors, (2219), 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) [2023-11-23 21:34:08,483 INFO L175 Difference]: Start difference. First operand has 241 places, 243 transitions, 519 flow. Second operand 6 states and 1572 transitions. [2023-11-23 21:34:08,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 246 transitions, 623 flow [2023-11-23 21:34:08,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 246 transitions, 613 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-23 21:34:08,491 INFO L231 Difference]: Finished difference. Result has 240 places, 246 transitions, 561 flow [2023-11-23 21:34:08,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=317, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=561, PETRI_PLACES=240, PETRI_TRANSITIONS=246} [2023-11-23 21:34:08,492 INFO L281 CegarLoopForPetriNet]: 243 programPoint places, -3 predicate places. [2023-11-23 21:34:08,493 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 246 transitions, 561 flow [2023-11-23 21:34:08,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.83333333333334) internal successors, (1529), 6 states have internal predecessors, (1529), 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) [2023-11-23 21:34:08,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:34:08,494 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:34:08,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-23 21:34:08,495 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-23 21:34:08,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:34:08,496 INFO L85 PathProgramCache]: Analyzing trace with hash 550919394, now seen corresponding path program 1 times [2023-11-23 21:34:08,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:34:08,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539808053] [2023-11-23 21:34:08,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:34:08,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:34:08,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:08,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:34:08,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:34:08,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539808053] [2023-11-23 21:34:08,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539808053] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:34:08,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:34:08,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:34:08,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311743695] [2023-11-23 21:34:08,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:34:08,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:34:08,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:34:08,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:34:08,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:34:09,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 317 [2023-11-23 21:34:09,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 246 transitions, 561 flow. Second operand has 6 states, 6 states have (on average 282.8333333333333) internal successors, (1697), 6 states have internal predecessors, (1697), 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) [2023-11-23 21:34:09,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:34:09,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 317 [2023-11-23 21:34:09,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:34:09,973 INFO L124 PetriNetUnfolderBase]: 254/1717 cut-off events. [2023-11-23 21:34:09,973 INFO L125 PetriNetUnfolderBase]: For 137/159 co-relation queries the response was YES. [2023-11-23 21:34:09,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2167 conditions, 1717 events. 254/1717 cut-off events. For 137/159 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 10620 event pairs, 34 based on Foata normal form. 5/1541 useless extension candidates. Maximal degree in co-relation 2132. Up to 104 conditions per place. [2023-11-23 21:34:09,990 INFO L140 encePairwiseOnDemand]: 311/317 looper letters, 42 selfloop transitions, 5 changer transitions 4/269 dead transitions. [2023-11-23 21:34:09,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 269 transitions, 725 flow [2023-11-23 21:34:09,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:34:09,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-23 21:34:09,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1734 transitions. [2023-11-23 21:34:09,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9116719242902208 [2023-11-23 21:34:09,997 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1734 transitions. [2023-11-23 21:34:09,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1734 transitions. [2023-11-23 21:34:09,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:34:09,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1734 transitions. [2023-11-23 21:34:10,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 289.0) internal successors, (1734), 6 states have internal predecessors, (1734), 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) [2023-11-23 21:34:10,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 317.0) internal successors, (2219), 7 states have internal predecessors, (2219), 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) [2023-11-23 21:34:10,027 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 317.0) internal successors, (2219), 7 states have internal predecessors, (2219), 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) [2023-11-23 21:34:10,028 INFO L175 Difference]: Start difference. First operand has 240 places, 246 transitions, 561 flow. Second operand 6 states and 1734 transitions. [2023-11-23 21:34:10,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 269 transitions, 725 flow [2023-11-23 21:34:10,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 269 transitions, 725 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-23 21:34:10,035 INFO L231 Difference]: Finished difference. Result has 244 places, 241 transitions, 546 flow [2023-11-23 21:34:10,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=317, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=546, PETRI_PLACES=244, PETRI_TRANSITIONS=241} [2023-11-23 21:34:10,037 INFO L281 CegarLoopForPetriNet]: 243 programPoint places, 1 predicate places. [2023-11-23 21:34:10,037 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 241 transitions, 546 flow [2023-11-23 21:34:10,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 282.8333333333333) internal successors, (1697), 6 states have internal predecessors, (1697), 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) [2023-11-23 21:34:10,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:34:10,038 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, 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] [2023-11-23 21:34:10,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-23 21:34:10,039 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-23 21:34:10,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:34:10,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1812113367, now seen corresponding path program 1 times [2023-11-23 21:34:10,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:34:10,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208899893] [2023-11-23 21:34:10,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:34:10,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:34:10,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:10,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:34:10,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:34:10,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208899893] [2023-11-23 21:34:10,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208899893] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:34:10,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:34:10,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:34:10,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475976797] [2023-11-23 21:34:10,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:34:10,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:34:10,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:34:10,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:34:10,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:34:10,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 317 [2023-11-23 21:34:10,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 241 transitions, 546 flow. Second operand has 3 states, 3 states have (on average 289.6666666666667) internal successors, (869), 3 states have internal predecessors, (869), 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) [2023-11-23 21:34:10,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:34:10,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 317 [2023-11-23 21:34:10,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:34:10,341 INFO L124 PetriNetUnfolderBase]: 127/1211 cut-off events. [2023-11-23 21:34:10,342 INFO L125 PetriNetUnfolderBase]: For 114/120 co-relation queries the response was YES. [2023-11-23 21:34:10,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1493 conditions, 1211 events. 127/1211 cut-off events. For 114/120 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 6461 event pairs, 32 based on Foata normal form. 1/1077 useless extension candidates. Maximal degree in co-relation 1458. Up to 120 conditions per place. [2023-11-23 21:34:10,353 INFO L140 encePairwiseOnDemand]: 311/317 looper letters, 20 selfloop transitions, 5 changer transitions 0/249 dead transitions. [2023-11-23 21:34:10,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 249 transitions, 620 flow [2023-11-23 21:34:10,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:34:10,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:34:10,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 890 transitions. [2023-11-23 21:34:10,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.935856992639327 [2023-11-23 21:34:10,357 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 890 transitions. [2023-11-23 21:34:10,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 890 transitions. [2023-11-23 21:34:10,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:34:10,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 890 transitions. [2023-11-23 21:34:10,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 296.6666666666667) internal successors, (890), 3 states have internal predecessors, (890), 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) [2023-11-23 21:34:10,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 317.0) internal successors, (1268), 4 states have internal predecessors, (1268), 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) [2023-11-23 21:34:10,363 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 317.0) internal successors, (1268), 4 states have internal predecessors, (1268), 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) [2023-11-23 21:34:10,363 INFO L175 Difference]: Start difference. First operand has 244 places, 241 transitions, 546 flow. Second operand 3 states and 890 transitions. [2023-11-23 21:34:10,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 249 transitions, 620 flow [2023-11-23 21:34:10,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 249 transitions, 604 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-23 21:34:10,370 INFO L231 Difference]: Finished difference. Result has 243 places, 245 transitions, 568 flow [2023-11-23 21:34:10,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=317, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=568, PETRI_PLACES=243, PETRI_TRANSITIONS=245} [2023-11-23 21:34:10,371 INFO L281 CegarLoopForPetriNet]: 243 programPoint places, 0 predicate places. [2023-11-23 21:34:10,372 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 245 transitions, 568 flow [2023-11-23 21:34:10,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 289.6666666666667) internal successors, (869), 3 states have internal predecessors, (869), 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) [2023-11-23 21:34:10,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:34:10,373 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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, 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] [2023-11-23 21:34:10,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-23 21:34:10,373 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-23 21:34:10,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:34:10,374 INFO L85 PathProgramCache]: Analyzing trace with hash 878067232, now seen corresponding path program 1 times [2023-11-23 21:34:10,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:34:10,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979414928] [2023-11-23 21:34:10,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:34:10,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:34:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:10,437 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 21:34:10,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:34:10,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979414928] [2023-11-23 21:34:10,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979414928] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:34:10,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:34:10,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:34:10,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747437397] [2023-11-23 21:34:10,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:34:10,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:34:10,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:34:10,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:34:10,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:34:10,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 317 [2023-11-23 21:34:10,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 245 transitions, 568 flow. Second operand has 3 states, 3 states have (on average 290.0) internal successors, (870), 3 states have internal predecessors, (870), 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) [2023-11-23 21:34:10,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:34:10,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 317 [2023-11-23 21:34:10,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:34:10,843 INFO L124 PetriNetUnfolderBase]: 155/1553 cut-off events. [2023-11-23 21:34:10,843 INFO L125 PetriNetUnfolderBase]: For 186/199 co-relation queries the response was YES. [2023-11-23 21:34:10,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1896 conditions, 1553 events. 155/1553 cut-off events. For 186/199 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 9506 event pairs, 31 based on Foata normal form. 1/1385 useless extension candidates. Maximal degree in co-relation 1860. Up to 132 conditions per place. [2023-11-23 21:34:10,858 INFO L140 encePairwiseOnDemand]: 311/317 looper letters, 20 selfloop transitions, 6 changer transitions 0/252 dead transitions. [2023-11-23 21:34:10,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 252 transitions, 643 flow [2023-11-23 21:34:10,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:34:10,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:34:10,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 889 transitions. [2023-11-23 21:34:10,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9348054679284963 [2023-11-23 21:34:10,863 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 889 transitions. [2023-11-23 21:34:10,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 889 transitions. [2023-11-23 21:34:10,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:34:10,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 889 transitions. [2023-11-23 21:34:10,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 296.3333333333333) internal successors, (889), 3 states have internal predecessors, (889), 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) [2023-11-23 21:34:10,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 317.0) internal successors, (1268), 4 states have internal predecessors, (1268), 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) [2023-11-23 21:34:10,871 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 317.0) internal successors, (1268), 4 states have internal predecessors, (1268), 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) [2023-11-23 21:34:10,871 INFO L175 Difference]: Start difference. First operand has 243 places, 245 transitions, 568 flow. Second operand 3 states and 889 transitions. [2023-11-23 21:34:10,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 252 transitions, 643 flow [2023-11-23 21:34:10,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 252 transitions, 631 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 21:34:10,879 INFO L231 Difference]: Finished difference. Result has 245 places, 249 transitions, 604 flow [2023-11-23 21:34:10,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=317, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=604, PETRI_PLACES=245, PETRI_TRANSITIONS=249} [2023-11-23 21:34:10,881 INFO L281 CegarLoopForPetriNet]: 243 programPoint places, 2 predicate places. [2023-11-23 21:34:10,882 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 249 transitions, 604 flow [2023-11-23 21:34:10,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 290.0) internal successors, (870), 3 states have internal predecessors, (870), 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) [2023-11-23 21:34:10,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:34:10,883 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:34:10,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-23 21:34:10,883 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-23 21:34:10,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:34:10,884 INFO L85 PathProgramCache]: Analyzing trace with hash -57399102, now seen corresponding path program 1 times [2023-11-23 21:34:10,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:34:10,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52454584] [2023-11-23 21:34:10,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:34:10,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:34:10,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:34:10,948 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:34:10,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:34:11,004 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 21:34:11,004 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:34:11,005 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2023-11-23 21:34:11,005 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (21 of 23 remaining) [2023-11-23 21:34:11,005 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (20 of 23 remaining) [2023-11-23 21:34:11,005 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 23 remaining) [2023-11-23 21:34:11,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (18 of 23 remaining) [2023-11-23 21:34:11,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (17 of 23 remaining) [2023-11-23 21:34:11,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (16 of 23 remaining) [2023-11-23 21:34:11,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 23 remaining) [2023-11-23 21:34:11,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (14 of 23 remaining) [2023-11-23 21:34:11,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (13 of 23 remaining) [2023-11-23 21:34:11,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (12 of 23 remaining) [2023-11-23 21:34:11,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (11 of 23 remaining) [2023-11-23 21:34:11,008 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (10 of 23 remaining) [2023-11-23 21:34:11,008 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (9 of 23 remaining) [2023-11-23 21:34:11,008 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (8 of 23 remaining) [2023-11-23 21:34:11,008 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (7 of 23 remaining) [2023-11-23 21:34:11,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (6 of 23 remaining) [2023-11-23 21:34:11,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (5 of 23 remaining) [2023-11-23 21:34:11,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (4 of 23 remaining) [2023-11-23 21:34:11,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 23 remaining) [2023-11-23 21:34:11,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (2 of 23 remaining) [2023-11-23 21:34:11,010 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (1 of 23 remaining) [2023-11-23 21:34:11,010 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (0 of 23 remaining) [2023-11-23 21:34:11,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-23 21:34:11,010 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:34:11,012 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-23 21:34:11,012 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-23 21:34:11,115 INFO L144 ThreadInstanceAdder]: Constructed 15 joinOtherThreadTransitions. [2023-11-23 21:34:11,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 361 places, 397 transitions, 857 flow [2023-11-23 21:34:11,670 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1241] threadEXIT-->L1034-13: Formula: (= v_threadThread1of3ForFork0_thidvar0_8 (let ((.cse0 (mod |v_threadThread3of3ForFork0_#t~mem12_8| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) InVars {threadThread1of3ForFork0_thidvar0=v_threadThread1of3ForFork0_thidvar0_8, threadThread3of3ForFork0_#t~mem12=|v_threadThread3of3ForFork0_#t~mem12_8|} OutVars{threadThread1of3ForFork0_thidvar0=v_threadThread1of3ForFork0_thidvar0_8, threadThread3of3ForFork0_#t~mem12=|v_threadThread3of3ForFork0_#t~mem12_8|} AuxVars[] AssignedVars[][134], [17#L1043-10true, threadThread1of3ForFork0NotInUse, threadThread2of3ForFork0NotInUse, 123#L1034-13true, threadThread3of3ForFork0InUse]) [2023-11-23 21:34:11,671 INFO L294 olderBase$Statistics]: this new event has 275 ancestors and is cut-off event [2023-11-23 21:34:11,671 INFO L297 olderBase$Statistics]: existing Event has 275 ancestors and is cut-off event [2023-11-23 21:34:11,671 INFO L297 olderBase$Statistics]: existing Event has 206 ancestors and is cut-off event [2023-11-23 21:34:11,671 INFO L297 olderBase$Statistics]: existing Event has 206 ancestors and is cut-off event [2023-11-23 21:34:11,682 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1241] threadEXIT-->L1034-13: Formula: (= v_threadThread1of3ForFork0_thidvar0_8 (let ((.cse0 (mod |v_threadThread3of3ForFork0_#t~mem12_8| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) InVars {threadThread1of3ForFork0_thidvar0=v_threadThread1of3ForFork0_thidvar0_8, threadThread3of3ForFork0_#t~mem12=|v_threadThread3of3ForFork0_#t~mem12_8|} OutVars{threadThread1of3ForFork0_thidvar0=v_threadThread1of3ForFork0_thidvar0_8, threadThread3of3ForFork0_#t~mem12=|v_threadThread3of3ForFork0_#t~mem12_8|} AuxVars[] AssignedVars[][134], [17#L1043-10true, 44#$Ultimate##0true, threadThread1of3ForFork0NotInUse, threadThread2of3ForFork0InUse, 123#L1034-13true, threadThread3of3ForFork0InUse]) [2023-11-23 21:34:11,682 INFO L294 olderBase$Statistics]: this new event has 292 ancestors and is cut-off event [2023-11-23 21:34:11,682 INFO L297 olderBase$Statistics]: existing Event has 223 ancestors and is cut-off event [2023-11-23 21:34:11,683 INFO L297 olderBase$Statistics]: existing Event has 154 ancestors and is cut-off event [2023-11-23 21:34:11,683 INFO L297 olderBase$Statistics]: existing Event has 223 ancestors and is cut-off event [2023-11-23 21:34:11,752 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1249] threadEXIT-->L1034-13: Formula: (= v_threadThread3of3ForFork0_thidvar0_12 (let ((.cse0 (mod |v_threadThread1of3ForFork0_#t~mem12_12| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) InVars {threadThread1of3ForFork0_#t~mem12=|v_threadThread1of3ForFork0_#t~mem12_12|, threadThread3of3ForFork0_thidvar0=v_threadThread3of3ForFork0_thidvar0_12} OutVars{threadThread1of3ForFork0_#t~mem12=|v_threadThread1of3ForFork0_#t~mem12_12|, threadThread3of3ForFork0_thidvar0=v_threadThread3of3ForFork0_thidvar0_12} AuxVars[] AssignedVars[][10], [17#L1043-10true, threadThread1of3ForFork0InUse, threadThread2of3ForFork0NotInUse, threadThread3of3ForFork0NotInUse, 93#L1034-13true]) [2023-11-23 21:34:11,752 INFO L294 olderBase$Statistics]: this new event has 275 ancestors and is cut-off event [2023-11-23 21:34:11,753 INFO L297 olderBase$Statistics]: existing Event has 206 ancestors and is cut-off event [2023-11-23 21:34:11,753 INFO L297 olderBase$Statistics]: existing Event has 275 ancestors and is cut-off event [2023-11-23 21:34:11,753 INFO L297 olderBase$Statistics]: existing Event has 206 ancestors and is cut-off event [2023-11-23 21:34:11,879 INFO L124 PetriNetUnfolderBase]: 211/2040 cut-off events. [2023-11-23 21:34:11,879 INFO L125 PetriNetUnfolderBase]: For 127/131 co-relation queries the response was YES. [2023-11-23 21:34:11,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2176 conditions, 2040 events. 211/2040 cut-off events. For 127/131 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 11167 event pairs, 3 based on Foata normal form. 3/1721 useless extension candidates. Maximal degree in co-relation 973. Up to 35 conditions per place. [2023-11-23 21:34:11,913 INFO L82 GeneralOperation]: Start removeDead. Operand has 361 places, 397 transitions, 857 flow [2023-11-23 21:34:11,941 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 311 places, 335 transitions, 715 flow [2023-11-23 21:34:11,943 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:34:11,943 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;@64accde2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:34:11,943 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-11-23 21:34:11,946 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 21:34:11,946 INFO L124 PetriNetUnfolderBase]: 0/21 cut-off events. [2023-11-23 21:34:11,946 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 21:34:11,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:34:11,947 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] [2023-11-23 21:34:11,947 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-23 21:34:11,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:34:11,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1449226970, now seen corresponding path program 1 times [2023-11-23 21:34:11,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:34:11,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610150224] [2023-11-23 21:34:11,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:34:11,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:34:11,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:11,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:34:11,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:34:11,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610150224] [2023-11-23 21:34:11,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610150224] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:34:11,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:34:11,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:34:11,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444738096] [2023-11-23 21:34:11,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:34:11,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:34:11,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:34:11,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:34:11,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:34:12,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 349 out of 397 [2023-11-23 21:34:12,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 335 transitions, 715 flow. Second operand has 3 states, 3 states have (on average 350.3333333333333) internal successors, (1051), 3 states have internal predecessors, (1051), 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) [2023-11-23 21:34:12,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:34:12,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 349 of 397 [2023-11-23 21:34:12,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:34:14,131 INFO L124 PetriNetUnfolderBase]: 1140/7845 cut-off events. [2023-11-23 21:34:14,131 INFO L125 PetriNetUnfolderBase]: For 1065/1065 co-relation queries the response was YES. [2023-11-23 21:34:14,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9400 conditions, 7845 events. 1140/7845 cut-off events. For 1065/1065 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 73711 event pairs, 375 based on Foata normal form. 479/7148 useless extension candidates. Maximal degree in co-relation 6435. Up to 1069 conditions per place. [2023-11-23 21:34:14,253 INFO L140 encePairwiseOnDemand]: 386/397 looper letters, 28 selfloop transitions, 2 changer transitions 1/326 dead transitions. [2023-11-23 21:34:14,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 326 transitions, 757 flow [2023-11-23 21:34:14,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:34:14,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:34:14,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1086 transitions. [2023-11-23 21:34:14,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9118387909319899 [2023-11-23 21:34:14,259 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1086 transitions. [2023-11-23 21:34:14,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1086 transitions. [2023-11-23 21:34:14,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:34:14,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1086 transitions. [2023-11-23 21:34:14,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 362.0) internal successors, (1086), 3 states have internal predecessors, (1086), 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) [2023-11-23 21:34:14,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 397.0) internal successors, (1588), 4 states have internal predecessors, (1588), 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) [2023-11-23 21:34:14,268 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 397.0) internal successors, (1588), 4 states have internal predecessors, (1588), 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) [2023-11-23 21:34:14,269 INFO L175 Difference]: Start difference. First operand has 311 places, 335 transitions, 715 flow. Second operand 3 states and 1086 transitions. [2023-11-23 21:34:14,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 326 transitions, 757 flow [2023-11-23 21:34:14,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 326 transitions, 757 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-23 21:34:14,279 INFO L231 Difference]: Finished difference. Result has 312 places, 325 transitions, 699 flow [2023-11-23 21:34:14,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=699, PETRI_PLACES=312, PETRI_TRANSITIONS=325} [2023-11-23 21:34:14,281 INFO L281 CegarLoopForPetriNet]: 311 programPoint places, 1 predicate places. [2023-11-23 21:34:14,281 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 325 transitions, 699 flow [2023-11-23 21:34:14,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 350.3333333333333) internal successors, (1051), 3 states have internal predecessors, (1051), 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) [2023-11-23 21:34:14,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:34:14,282 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] [2023-11-23 21:34:14,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-23 21:34:14,283 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-23 21:34:14,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:34:14,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1904119294, now seen corresponding path program 1 times [2023-11-23 21:34:14,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:34:14,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258429617] [2023-11-23 21:34:14,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:34:14,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:34:14,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:14,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:34:14,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:34:14,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258429617] [2023-11-23 21:34:14,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258429617] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:34:14,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:34:14,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:34:14,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515234805] [2023-11-23 21:34:14,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:34:14,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:34:14,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:34:14,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:34:14,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:34:14,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 341 out of 397 [2023-11-23 21:34:14,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 325 transitions, 699 flow. Second operand has 3 states, 3 states have (on average 342.0) internal successors, (1026), 3 states have internal predecessors, (1026), 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) [2023-11-23 21:34:14,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:34:14,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 341 of 397 [2023-11-23 21:34:14,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:34:16,720 INFO L124 PetriNetUnfolderBase]: 1387/9163 cut-off events. [2023-11-23 21:34:16,720 INFO L125 PetriNetUnfolderBase]: For 1737/1792 co-relation queries the response was YES. [2023-11-23 21:34:16,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11365 conditions, 9163 events. 1387/9163 cut-off events. For 1737/1792 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 89485 event pairs, 488 based on Foata normal form. 0/7857 useless extension candidates. Maximal degree in co-relation 11332. Up to 1431 conditions per place. [2023-11-23 21:34:16,839 INFO L140 encePairwiseOnDemand]: 390/397 looper letters, 30 selfloop transitions, 1 changer transitions 0/319 dead transitions. [2023-11-23 21:34:16,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 319 transitions, 749 flow [2023-11-23 21:34:16,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:34:16,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:34:16,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1060 transitions. [2023-11-23 21:34:16,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8900083963056256 [2023-11-23 21:34:16,845 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1060 transitions. [2023-11-23 21:34:16,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1060 transitions. [2023-11-23 21:34:16,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:34:16,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1060 transitions. [2023-11-23 21:34:16,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 353.3333333333333) internal successors, (1060), 3 states have internal predecessors, (1060), 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) [2023-11-23 21:34:16,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 397.0) internal successors, (1588), 4 states have internal predecessors, (1588), 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) [2023-11-23 21:34:16,853 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 397.0) internal successors, (1588), 4 states have internal predecessors, (1588), 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) [2023-11-23 21:34:16,853 INFO L175 Difference]: Start difference. First operand has 312 places, 325 transitions, 699 flow. Second operand 3 states and 1060 transitions. [2023-11-23 21:34:16,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 319 transitions, 749 flow [2023-11-23 21:34:16,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 319 transitions, 745 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 21:34:16,862 INFO L231 Difference]: Finished difference. Result has 305 places, 319 transitions, 685 flow [2023-11-23 21:34:16,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=685, PETRI_PLACES=305, PETRI_TRANSITIONS=319} [2023-11-23 21:34:16,864 INFO L281 CegarLoopForPetriNet]: 311 programPoint places, -6 predicate places. [2023-11-23 21:34:16,864 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 319 transitions, 685 flow [2023-11-23 21:34:16,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 342.0) internal successors, (1026), 3 states have internal predecessors, (1026), 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) [2023-11-23 21:34:16,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:34:16,865 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, 1, 1, 1, 1, 1] [2023-11-23 21:34:16,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-23 21:34:16,866 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-23 21:34:16,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:34:16,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1860132442, now seen corresponding path program 1 times [2023-11-23 21:34:16,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:34:16,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844634852] [2023-11-23 21:34:16,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:34:16,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:34:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:17,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:34:17,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:34:17,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844634852] [2023-11-23 21:34:17,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844634852] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:34:17,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:34:17,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:34:17,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419583241] [2023-11-23 21:34:17,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:34:17,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:34:17,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:34:17,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:34:17,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:34:17,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 397 [2023-11-23 21:34:17,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 319 transitions, 685 flow. Second operand has 6 states, 6 states have (on average 298.3333333333333) internal successors, (1790), 6 states have internal predecessors, (1790), 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) [2023-11-23 21:34:17,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:34:17,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 397 [2023-11-23 21:34:17,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand