./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-race-challenges/thread-join-counter-outer-race-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8acc9ba5-33a2-4e1b-99bb-4f130a4b45da/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8acc9ba5-33a2-4e1b-99bb-4f130a4b45da/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8acc9ba5-33a2-4e1b-99bb-4f130a4b45da/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8acc9ba5-33a2-4e1b-99bb-4f130a4b45da/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-race-challenges/thread-join-counter-outer-race-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8acc9ba5-33a2-4e1b-99bb-4f130a4b45da/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8acc9ba5-33a2-4e1b-99bb-4f130a4b45da/bin/uautomizer-verify-VRDe98Ueme --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 d12d10876782f724294e520e736e39c29f3c74eafacabb114f7449f7b8388c75 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:05:17,316 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:05:17,413 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8acc9ba5-33a2-4e1b-99bb-4f130a4b45da/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-26 12:05:17,419 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:05:17,422 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:05:17,457 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:05:17,458 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:05:17,459 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:05:17,461 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:05:17,466 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:05:17,467 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:05:17,467 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:05:17,468 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:05:17,470 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:05:17,470 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:05:17,471 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:05:17,471 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:05:17,471 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:05:17,472 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:05:17,472 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:05:17,473 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:05:17,473 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:05:17,474 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-26 12:05:17,474 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 12:05:17,475 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:05:17,475 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:05:17,476 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:05:17,477 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:05:17,477 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:05:17,478 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:05:17,479 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:05:17,479 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:05:17,480 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:05:17,480 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 12:05:17,480 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:05:17,480 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:05:17,481 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:05:17,481 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:05:17,481 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 12:05:17,481 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:05:17,482 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:05:17,482 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_8acc9ba5-33a2-4e1b-99bb-4f130a4b45da/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8acc9ba5-33a2-4e1b-99bb-4f130a4b45da/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d12d10876782f724294e520e736e39c29f3c74eafacabb114f7449f7b8388c75 [2023-11-26 12:05:17,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:05:17,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:05:17,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:05:17,857 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:05:17,858 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:05:17,859 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8acc9ba5-33a2-4e1b-99bb-4f130a4b45da/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-race-challenges/thread-join-counter-outer-race-2.i [2023-11-26 12:05:21,055 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:05:21,335 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:05:21,340 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8acc9ba5-33a2-4e1b-99bb-4f130a4b45da/sv-benchmarks/c/pthread-race-challenges/thread-join-counter-outer-race-2.i [2023-11-26 12:05:21,366 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8acc9ba5-33a2-4e1b-99bb-4f130a4b45da/bin/uautomizer-verify-VRDe98Ueme/data/58275f3cd/0dc48429419946f093550e275c74788f/FLAG893b3ecf9 [2023-11-26 12:05:21,385 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8acc9ba5-33a2-4e1b-99bb-4f130a4b45da/bin/uautomizer-verify-VRDe98Ueme/data/58275f3cd/0dc48429419946f093550e275c74788f [2023-11-26 12:05:21,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:05:21,390 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:05:21,397 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:05:21,397 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:05:21,407 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:05:21,407 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:05:21" (1/1) ... [2023-11-26 12:05:21,409 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33cf9a31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:21, skipping insertion in model container [2023-11-26 12:05:21,409 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:05:21" (1/1) ... [2023-11-26 12:05:21,488 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:05:21,963 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:05:21,986 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:05:22,061 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:05:22,119 WARN L675 CHandler]: The function pthread_detach is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:05:22,129 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:05:22,129 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:22 WrapperNode [2023-11-26 12:05:22,129 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:05:22,131 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:05:22,131 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:05:22,132 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:05:22,141 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:22" (1/1) ... [2023-11-26 12:05:22,177 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:22" (1/1) ... [2023-11-26 12:05:22,219 INFO L138 Inliner]: procedures = 160, calls = 42, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 105 [2023-11-26 12:05:22,220 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:05:22,221 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:05:22,221 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:05:22,221 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:05:22,233 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:22" (1/1) ... [2023-11-26 12:05:22,234 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:22" (1/1) ... [2023-11-26 12:05:22,251 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:22" (1/1) ... [2023-11-26 12:05:22,251 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:22" (1/1) ... [2023-11-26 12:05:22,259 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:22" (1/1) ... [2023-11-26 12:05:22,275 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:22" (1/1) ... [2023-11-26 12:05:22,277 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:22" (1/1) ... [2023-11-26 12:05:22,279 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:22" (1/1) ... [2023-11-26 12:05:22,282 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:05:22,283 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:05:22,284 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:05:22,284 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:05:22,285 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:22" (1/1) ... [2023-11-26 12:05:22,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:05:22,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8acc9ba5-33a2-4e1b-99bb-4f130a4b45da/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:05:22,337 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8acc9ba5-33a2-4e1b-99bb-4f130a4b45da/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:05:22,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8acc9ba5-33a2-4e1b-99bb-4f130a4b45da/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:05:22,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-26 12:05:22,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-26 12:05:22,383 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 12:05:22,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:05:22,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 12:05:22,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 12:05:22,384 INFO L130 BoogieDeclarations]: Found specification of procedure pthread_detach [2023-11-26 12:05:22,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-26 12:05:22,384 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2023-11-26 12:05:22,384 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2023-11-26 12:05:22,384 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 12:05:22,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:05:22,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:05:22,388 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 12:05:22,538 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:05:22,540 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:05:22,828 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:05:22,865 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:05:22,866 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-26 12:05:22,867 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:05:22 BoogieIcfgContainer [2023-11-26 12:05:22,868 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:05:22,894 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:05:22,894 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:05:22,898 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:05:22,906 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:05:21" (1/3) ... [2023-11-26 12:05:22,907 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32bfd1c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:05:22, skipping insertion in model container [2023-11-26 12:05:22,908 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:22" (2/3) ... [2023-11-26 12:05:22,908 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32bfd1c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:05:22, skipping insertion in model container [2023-11-26 12:05:22,908 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:05:22" (3/3) ... [2023-11-26 12:05:22,910 INFO L112 eAbstractionObserver]: Analyzing ICFG thread-join-counter-outer-race-2.i [2023-11-26 12:05:22,919 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 12:05:22,929 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:05:22,930 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-26 12:05:22,930 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 12:05:23,039 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 12:05:23,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 139 places, 140 transitions, 284 flow [2023-11-26 12:05:23,175 INFO L124 PetriNetUnfolderBase]: 7/184 cut-off events. [2023-11-26 12:05:23,175 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:05:23,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 184 events. 7/184 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 260 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 93. Up to 4 conditions per place. [2023-11-26 12:05:23,182 INFO L82 GeneralOperation]: Start removeDead. Operand has 139 places, 140 transitions, 284 flow [2023-11-26 12:05:23,188 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 139 places, 140 transitions, 284 flow [2023-11-26 12:05:23,200 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:05:23,207 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;@239a5c45, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:05:23,207 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-26 12:05:23,223 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:05:23,223 INFO L124 PetriNetUnfolderBase]: 2/54 cut-off events. [2023-11-26 12:05:23,223 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:05:23,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:05:23,224 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] [2023-11-26 12:05:23,224 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2023-11-26 12:05:23,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:23,230 INFO L85 PathProgramCache]: Analyzing trace with hash -351766597, now seen corresponding path program 1 times [2023-11-26 12:05:23,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:23,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575751798] [2023-11-26 12:05:23,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:23,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:23,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:23,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:05:23,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:23,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575751798] [2023-11-26 12:05:23,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575751798] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:23,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:23,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:05:23,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758490600] [2023-11-26 12:05:23,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:23,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:05:23,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:23,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:05:23,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:05:23,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 140 [2023-11-26 12:05:23,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 140 transitions, 284 flow. Second operand has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:23,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:05:23,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 140 [2023-11-26 12:05:23,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:05:23,936 INFO L124 PetriNetUnfolderBase]: 116/739 cut-off events. [2023-11-26 12:05:23,936 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 12:05:23,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1009 conditions, 739 events. 116/739 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 4354 event pairs, 37 based on Foata normal form. 5/664 useless extension candidates. Maximal degree in co-relation 902. Up to 144 conditions per place. [2023-11-26 12:05:23,945 INFO L140 encePairwiseOnDemand]: 126/140 looper letters, 32 selfloop transitions, 8 changer transitions 1/155 dead transitions. [2023-11-26 12:05:23,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 155 transitions, 394 flow [2023-11-26 12:05:23,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:05:23,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:05:23,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 393 transitions. [2023-11-26 12:05:23,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9357142857142857 [2023-11-26 12:05:23,962 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 393 transitions. [2023-11-26 12:05:23,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 393 transitions. [2023-11-26 12:05:23,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:05:23,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 393 transitions. [2023-11-26 12:05:23,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:23,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:23,979 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:23,981 INFO L175 Difference]: Start difference. First operand has 139 places, 140 transitions, 284 flow. Second operand 3 states and 393 transitions. [2023-11-26 12:05:23,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 155 transitions, 394 flow [2023-11-26 12:05:23,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 155 transitions, 394 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:05:23,991 INFO L231 Difference]: Finished difference. Result has 143 places, 144 transitions, 346 flow [2023-11-26 12:05:23,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=346, PETRI_PLACES=143, PETRI_TRANSITIONS=144} [2023-11-26 12:05:23,998 INFO L281 CegarLoopForPetriNet]: 139 programPoint places, 4 predicate places. [2023-11-26 12:05:23,998 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 144 transitions, 346 flow [2023-11-26 12:05:23,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:23,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:05:23,999 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] [2023-11-26 12:05:23,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 12:05:23,999 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2023-11-26 12:05:24,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:24,000 INFO L85 PathProgramCache]: Analyzing trace with hash 502039776, now seen corresponding path program 1 times [2023-11-26 12:05:24,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:24,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297555447] [2023-11-26 12:05:24,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:24,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:24,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:05:24,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:24,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297555447] [2023-11-26 12:05:24,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297555447] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:24,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:24,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:05:24,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070517386] [2023-11-26 12:05:24,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:24,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:05:24,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:24,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:05:24,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:05:24,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 140 [2023-11-26 12:05:24,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 144 transitions, 346 flow. Second operand has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:24,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:05:24,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 140 [2023-11-26 12:05:24,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:05:24,432 INFO L124 PetriNetUnfolderBase]: 134/875 cut-off events. [2023-11-26 12:05:24,432 INFO L125 PetriNetUnfolderBase]: For 172/177 co-relation queries the response was YES. [2023-11-26 12:05:24,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1365 conditions, 875 events. 134/875 cut-off events. For 172/177 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5697 event pairs, 84 based on Foata normal form. 4/796 useless extension candidates. Maximal degree in co-relation 1246. Up to 266 conditions per place. [2023-11-26 12:05:24,439 INFO L140 encePairwiseOnDemand]: 134/140 looper letters, 29 selfloop transitions, 7 changer transitions 0/153 dead transitions. [2023-11-26 12:05:24,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 153 transitions, 446 flow [2023-11-26 12:05:24,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:05:24,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:05:24,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 376 transitions. [2023-11-26 12:05:24,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8952380952380953 [2023-11-26 12:05:24,442 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 376 transitions. [2023-11-26 12:05:24,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 376 transitions. [2023-11-26 12:05:24,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:05:24,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 376 transitions. [2023-11-26 12:05:24,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:24,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:24,448 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:24,448 INFO L175 Difference]: Start difference. First operand has 143 places, 144 transitions, 346 flow. Second operand 3 states and 376 transitions. [2023-11-26 12:05:24,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 153 transitions, 446 flow [2023-11-26 12:05:24,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 153 transitions, 426 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:05:24,456 INFO L231 Difference]: Finished difference. Result has 144 places, 149 transitions, 386 flow [2023-11-26 12:05:24,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=386, PETRI_PLACES=144, PETRI_TRANSITIONS=149} [2023-11-26 12:05:24,457 INFO L281 CegarLoopForPetriNet]: 139 programPoint places, 5 predicate places. [2023-11-26 12:05:24,458 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 149 transitions, 386 flow [2023-11-26 12:05:24,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:24,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:05:24,459 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] [2023-11-26 12:05:24,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 12:05:24,459 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2023-11-26 12:05:24,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:24,460 INFO L85 PathProgramCache]: Analyzing trace with hash 568895190, now seen corresponding path program 1 times [2023-11-26 12:05:24,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:24,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248976714] [2023-11-26 12:05:24,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:24,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:24,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:05:24,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:24,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248976714] [2023-11-26 12:05:24,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248976714] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:24,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:24,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:05:24,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269974651] [2023-11-26 12:05:24,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:24,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:05:24,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:24,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:05:24,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:05:24,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 140 [2023-11-26 12:05:24,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 149 transitions, 386 flow. Second operand has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:24,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:05:24,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 140 [2023-11-26 12:05:24,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:05:24,716 INFO L124 PetriNetUnfolderBase]: 93/806 cut-off events. [2023-11-26 12:05:24,716 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2023-11-26 12:05:24,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1163 conditions, 806 events. 93/806 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 5274 event pairs, 51 based on Foata normal form. 0/738 useless extension candidates. Maximal degree in co-relation 1049. Up to 147 conditions per place. [2023-11-26 12:05:24,723 INFO L140 encePairwiseOnDemand]: 136/140 looper letters, 17 selfloop transitions, 3 changer transitions 1/155 dead transitions. [2023-11-26 12:05:24,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 155 transitions, 440 flow [2023-11-26 12:05:24,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:05:24,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:05:24,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 388 transitions. [2023-11-26 12:05:24,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9238095238095239 [2023-11-26 12:05:24,725 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 388 transitions. [2023-11-26 12:05:24,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 388 transitions. [2023-11-26 12:05:24,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:05:24,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 388 transitions. [2023-11-26 12:05:24,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:24,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:24,730 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:24,730 INFO L175 Difference]: Start difference. First operand has 144 places, 149 transitions, 386 flow. Second operand 3 states and 388 transitions. [2023-11-26 12:05:24,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 155 transitions, 440 flow [2023-11-26 12:05:24,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 155 transitions, 426 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:05:24,737 INFO L231 Difference]: Finished difference. Result has 146 places, 151 transitions, 394 flow [2023-11-26 12:05:24,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=394, PETRI_PLACES=146, PETRI_TRANSITIONS=151} [2023-11-26 12:05:24,739 INFO L281 CegarLoopForPetriNet]: 139 programPoint places, 7 predicate places. [2023-11-26 12:05:24,739 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 151 transitions, 394 flow [2023-11-26 12:05:24,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:24,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:05:24,740 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, 1, 1] [2023-11-26 12:05:24,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 12:05:24,741 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2023-11-26 12:05:24,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:24,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1915536876, now seen corresponding path program 1 times [2023-11-26 12:05:24,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:24,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007786155] [2023-11-26 12:05:24,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:24,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:25,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:05:25,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:25,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007786155] [2023-11-26 12:05:25,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007786155] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:25,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:25,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:05:25,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041240085] [2023-11-26 12:05:25,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:25,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:05:25,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:25,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:05:25,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:05:25,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 140 [2023-11-26 12:05:25,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 151 transitions, 394 flow. Second operand has 6 states, 6 states have (on average 116.66666666666667) internal successors, (700), 6 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:25,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:05:25,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 140 [2023-11-26 12:05:25,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:05:25,796 INFO L124 PetriNetUnfolderBase]: 108/1003 cut-off events. [2023-11-26 12:05:25,797 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2023-11-26 12:05:25,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1447 conditions, 1003 events. 108/1003 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 6821 event pairs, 49 based on Foata normal form. 0/929 useless extension candidates. Maximal degree in co-relation 1328. Up to 167 conditions per place. [2023-11-26 12:05:25,806 INFO L140 encePairwiseOnDemand]: 134/140 looper letters, 32 selfloop transitions, 5 changer transitions 0/166 dead transitions. [2023-11-26 12:05:25,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 166 transitions, 498 flow [2023-11-26 12:05:25,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:05:25,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 12:05:25,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 728 transitions. [2023-11-26 12:05:25,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2023-11-26 12:05:25,811 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 728 transitions. [2023-11-26 12:05:25,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 728 transitions. [2023-11-26 12:05:25,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:05:25,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 728 transitions. [2023-11-26 12:05:25,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 121.33333333333333) internal successors, (728), 6 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:25,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 140.0) internal successors, (980), 7 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:25,819 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 140.0) internal successors, (980), 7 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:25,820 INFO L175 Difference]: Start difference. First operand has 146 places, 151 transitions, 394 flow. Second operand 6 states and 728 transitions. [2023-11-26 12:05:25,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 166 transitions, 498 flow [2023-11-26 12:05:25,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 166 transitions, 492 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:05:25,827 INFO L231 Difference]: Finished difference. Result has 148 places, 150 transitions, 396 flow [2023-11-26 12:05:25,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=396, PETRI_PLACES=148, PETRI_TRANSITIONS=150} [2023-11-26 12:05:25,829 INFO L281 CegarLoopForPetriNet]: 139 programPoint places, 9 predicate places. [2023-11-26 12:05:25,830 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 150 transitions, 396 flow [2023-11-26 12:05:25,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 116.66666666666667) internal successors, (700), 6 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:25,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:05:25,831 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, 1, 1, 1, 1] [2023-11-26 12:05:25,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 12:05:25,832 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting threadErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2023-11-26 12:05:25,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:25,835 INFO L85 PathProgramCache]: Analyzing trace with hash 713307026, now seen corresponding path program 1 times [2023-11-26 12:05:25,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:25,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169579402] [2023-11-26 12:05:25,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:25,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:25,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:25,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:05:25,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:25,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169579402] [2023-11-26 12:05:25,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169579402] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:25,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:25,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:05:25,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559974345] [2023-11-26 12:05:25,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:25,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:05:25,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:25,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:05:25,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:05:25,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 140 [2023-11-26 12:05:25,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 150 transitions, 396 flow. Second operand has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:25,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:05:25,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 140 [2023-11-26 12:05:25,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:05:26,176 INFO L124 PetriNetUnfolderBase]: 175/1019 cut-off events. [2023-11-26 12:05:26,177 INFO L125 PetriNetUnfolderBase]: For 179/186 co-relation queries the response was YES. [2023-11-26 12:05:26,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1667 conditions, 1019 events. 175/1019 cut-off events. For 179/186 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 6906 event pairs, 79 based on Foata normal form. 3/937 useless extension candidates. Maximal degree in co-relation 1548. Up to 303 conditions per place. [2023-11-26 12:05:26,185 INFO L140 encePairwiseOnDemand]: 133/140 looper letters, 30 selfloop transitions, 11 changer transitions 0/163 dead transitions. [2023-11-26 12:05:26,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 163 transitions, 518 flow [2023-11-26 12:05:26,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:05:26,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:05:26,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2023-11-26 12:05:26,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9119047619047619 [2023-11-26 12:05:26,189 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2023-11-26 12:05:26,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2023-11-26 12:05:26,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:05:26,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2023-11-26 12:05:26,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:26,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:26,194 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:26,194 INFO L175 Difference]: Start difference. First operand has 148 places, 150 transitions, 396 flow. Second operand 3 states and 383 transitions. [2023-11-26 12:05:26,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 163 transitions, 518 flow [2023-11-26 12:05:26,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 163 transitions, 508 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-26 12:05:26,201 INFO L231 Difference]: Finished difference. Result has 147 places, 157 transitions, 474 flow [2023-11-26 12:05:26,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=474, PETRI_PLACES=147, PETRI_TRANSITIONS=157} [2023-11-26 12:05:26,202 INFO L281 CegarLoopForPetriNet]: 139 programPoint places, 8 predicate places. [2023-11-26 12:05:26,202 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 157 transitions, 474 flow [2023-11-26 12:05:26,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:26,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:05:26,203 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:05:26,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 12:05:26,204 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting threadErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2023-11-26 12:05:26,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:26,204 INFO L85 PathProgramCache]: Analyzing trace with hash 419611801, now seen corresponding path program 1 times [2023-11-26 12:05:26,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:26,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472168047] [2023-11-26 12:05:26,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:26,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:26,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:26,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:05:26,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:26,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472168047] [2023-11-26 12:05:26,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472168047] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:26,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:26,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:05:26,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182506753] [2023-11-26 12:05:26,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:26,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:05:26,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:26,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:05:26,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:05:26,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 140 [2023-11-26 12:05:26,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 157 transitions, 474 flow. Second operand has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:26,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:05:26,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 140 [2023-11-26 12:05:26,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:05:26,497 INFO L124 PetriNetUnfolderBase]: 151/958 cut-off events. [2023-11-26 12:05:26,497 INFO L125 PetriNetUnfolderBase]: For 265/265 co-relation queries the response was YES. [2023-11-26 12:05:26,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1664 conditions, 958 events. 151/958 cut-off events. For 265/265 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 6784 event pairs, 69 based on Foata normal form. 0/913 useless extension candidates. Maximal degree in co-relation 1543. Up to 227 conditions per place. [2023-11-26 12:05:26,504 INFO L140 encePairwiseOnDemand]: 135/140 looper letters, 21 selfloop transitions, 4 changer transitions 3/166 dead transitions. [2023-11-26 12:05:26,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 166 transitions, 548 flow [2023-11-26 12:05:26,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:05:26,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:05:26,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 387 transitions. [2023-11-26 12:05:26,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9214285714285714 [2023-11-26 12:05:26,507 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 387 transitions. [2023-11-26 12:05:26,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 387 transitions. [2023-11-26 12:05:26,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:05:26,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 387 transitions. [2023-11-26 12:05:26,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:26,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:26,511 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:26,511 INFO L175 Difference]: Start difference. First operand has 147 places, 157 transitions, 474 flow. Second operand 3 states and 387 transitions. [2023-11-26 12:05:26,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 166 transitions, 548 flow [2023-11-26 12:05:26,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 166 transitions, 526 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:05:26,518 INFO L231 Difference]: Finished difference. Result has 149 places, 157 transitions, 474 flow [2023-11-26 12:05:26,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=474, PETRI_PLACES=149, PETRI_TRANSITIONS=157} [2023-11-26 12:05:26,520 INFO L281 CegarLoopForPetriNet]: 139 programPoint places, 10 predicate places. [2023-11-26 12:05:26,520 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 157 transitions, 474 flow [2023-11-26 12:05:26,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:26,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:05:26,521 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:05:26,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 12:05:26,521 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2023-11-26 12:05:26,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:26,522 INFO L85 PathProgramCache]: Analyzing trace with hash -767961388, now seen corresponding path program 1 times [2023-11-26 12:05:26,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:26,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641221965] [2023-11-26 12:05:26,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:26,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:26,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:26,679 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 12:05:26,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:26,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641221965] [2023-11-26 12:05:26,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641221965] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:26,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:26,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:05:26,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442508151] [2023-11-26 12:05:26,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:26,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:05:26,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:26,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:05:26,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:05:26,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 140 [2023-11-26 12:05:26,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 157 transitions, 474 flow. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:26,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:05:26,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 140 [2023-11-26 12:05:26,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:05:26,801 INFO L124 PetriNetUnfolderBase]: 22/460 cut-off events. [2023-11-26 12:05:26,802 INFO L125 PetriNetUnfolderBase]: For 96/102 co-relation queries the response was YES. [2023-11-26 12:05:26,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 731 conditions, 460 events. 22/460 cut-off events. For 96/102 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2243 event pairs, 7 based on Foata normal form. 6/453 useless extension candidates. Maximal degree in co-relation 612. Up to 45 conditions per place. [2023-11-26 12:05:26,805 INFO L140 encePairwiseOnDemand]: 131/140 looper letters, 6 selfloop transitions, 9 changer transitions 2/139 dead transitions. [2023-11-26 12:05:26,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 139 transitions, 394 flow [2023-11-26 12:05:26,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:05:26,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:05:26,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 396 transitions. [2023-11-26 12:05:26,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9428571428571428 [2023-11-26 12:05:26,807 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 396 transitions. [2023-11-26 12:05:26,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 396 transitions. [2023-11-26 12:05:26,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:05:26,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 396 transitions. [2023-11-26 12:05:26,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:26,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:26,812 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:26,812 INFO L175 Difference]: Start difference. First operand has 149 places, 157 transitions, 474 flow. Second operand 3 states and 396 transitions. [2023-11-26 12:05:26,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 139 transitions, 394 flow [2023-11-26 12:05:26,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 139 transitions, 356 flow, removed 11 selfloop flow, removed 6 redundant places. [2023-11-26 12:05:26,839 INFO L231 Difference]: Finished difference. Result has 141 places, 136 transitions, 347 flow [2023-11-26 12:05:26,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=347, PETRI_PLACES=141, PETRI_TRANSITIONS=136} [2023-11-26 12:05:26,841 INFO L281 CegarLoopForPetriNet]: 139 programPoint places, 2 predicate places. [2023-11-26 12:05:26,841 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 136 transitions, 347 flow [2023-11-26 12:05:26,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:26,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:05:26,842 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-26 12:05:26,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 12:05:26,842 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2023-11-26 12:05:26,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:26,842 INFO L85 PathProgramCache]: Analyzing trace with hash 844306254, now seen corresponding path program 1 times [2023-11-26 12:05:26,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:26,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690922018] [2023-11-26 12:05:26,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:26,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:05:26,891 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 12:05:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:05:26,962 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 12:05:26,963 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 12:05:26,964 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2023-11-26 12:05:26,966 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 12 remaining) [2023-11-26 12:05:26,966 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (9 of 12 remaining) [2023-11-26 12:05:26,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (8 of 12 remaining) [2023-11-26 12:05:26,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (7 of 12 remaining) [2023-11-26 12:05:26,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (6 of 12 remaining) [2023-11-26 12:05:26,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (5 of 12 remaining) [2023-11-26 12:05:26,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (4 of 12 remaining) [2023-11-26 12:05:26,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (3 of 12 remaining) [2023-11-26 12:05:26,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 12 remaining) [2023-11-26 12:05:26,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (1 of 12 remaining) [2023-11-26 12:05:26,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (0 of 12 remaining) [2023-11-26 12:05:26,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 12:05:26,969 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:05:26,972 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 12:05:26,972 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-26 12:05:27,017 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 12:05:27,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 172 transitions, 354 flow [2023-11-26 12:05:27,074 INFO L124 PetriNetUnfolderBase]: 10/278 cut-off events. [2023-11-26 12:05:27,075 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-26 12:05:27,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 278 events. 10/278 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 458 event pairs, 0 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 185. Up to 6 conditions per place. [2023-11-26 12:05:27,076 INFO L82 GeneralOperation]: Start removeDead. Operand has 173 places, 172 transitions, 354 flow [2023-11-26 12:05:27,081 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 173 places, 172 transitions, 354 flow [2023-11-26 12:05:27,082 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:05:27,089 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;@239a5c45, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:05:27,090 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-11-26 12:05:27,096 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:05:27,096 INFO L124 PetriNetUnfolderBase]: 2/54 cut-off events. [2023-11-26 12:05:27,096 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:05:27,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:05:27,101 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] [2023-11-26 12:05:27,102 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-11-26 12:05:27,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:27,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1035402171, now seen corresponding path program 1 times [2023-11-26 12:05:27,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:27,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341561055] [2023-11-26 12:05:27,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:27,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:27,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:27,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:05:27,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:27,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341561055] [2023-11-26 12:05:27,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341561055] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:27,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:27,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:05:27,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382694147] [2023-11-26 12:05:27,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:27,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:05:27,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:27,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:05:27,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:05:27,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 172 [2023-11-26 12:05:27,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 172 transitions, 354 flow. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:27,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:05:27,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 172 [2023-11-26 12:05:27,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:05:28,987 INFO L124 PetriNetUnfolderBase]: 2738/8867 cut-off events. [2023-11-26 12:05:28,987 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-11-26 12:05:29,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13375 conditions, 8867 events. 2738/8867 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 92062 event pairs, 1071 based on Foata normal form. 62/7819 useless extension candidates. Maximal degree in co-relation 11927. Up to 2307 conditions per place. [2023-11-26 12:05:29,068 INFO L140 encePairwiseOnDemand]: 154/172 looper letters, 46 selfloop transitions, 11 changer transitions 1/195 dead transitions. [2023-11-26 12:05:29,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 195 transitions, 519 flow [2023-11-26 12:05:29,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:05:29,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:05:29,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 480 transitions. [2023-11-26 12:05:29,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9302325581395349 [2023-11-26 12:05:29,071 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 480 transitions. [2023-11-26 12:05:29,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 480 transitions. [2023-11-26 12:05:29,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:05:29,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 480 transitions. [2023-11-26 12:05:29,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:29,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:29,076 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:29,076 INFO L175 Difference]: Start difference. First operand has 173 places, 172 transitions, 354 flow. Second operand 3 states and 480 transitions. [2023-11-26 12:05:29,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 195 transitions, 519 flow [2023-11-26 12:05:29,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 195 transitions, 519 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:05:29,081 INFO L231 Difference]: Finished difference. Result has 177 places, 179 transitions, 442 flow [2023-11-26 12:05:29,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=442, PETRI_PLACES=177, PETRI_TRANSITIONS=179} [2023-11-26 12:05:29,084 INFO L281 CegarLoopForPetriNet]: 173 programPoint places, 4 predicate places. [2023-11-26 12:05:29,085 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 179 transitions, 442 flow [2023-11-26 12:05:29,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:29,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:05:29,086 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] [2023-11-26 12:05:29,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 12:05:29,086 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-11-26 12:05:29,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:29,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1854335348, now seen corresponding path program 1 times [2023-11-26 12:05:29,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:29,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47099958] [2023-11-26 12:05:29,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:29,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:29,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:29,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:05:29,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:29,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47099958] [2023-11-26 12:05:29,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47099958] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:29,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:29,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:05:29,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921063020] [2023-11-26 12:05:29,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:29,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:05:29,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:29,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:05:29,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:05:29,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 172 [2023-11-26 12:05:29,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 179 transitions, 442 flow. Second operand has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:29,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:05:29,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 172 [2023-11-26 12:05:29,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:05:31,324 INFO L124 PetriNetUnfolderBase]: 2944/10805 cut-off events. [2023-11-26 12:05:31,324 INFO L125 PetriNetUnfolderBase]: For 3056/3160 co-relation queries the response was YES. [2023-11-26 12:05:31,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18674 conditions, 10805 events. 2944/10805 cut-off events. For 3056/3160 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 120788 event pairs, 1867 based on Foata normal form. 56/9735 useless extension candidates. Maximal degree in co-relation 16750. Up to 4168 conditions per place. [2023-11-26 12:05:31,434 INFO L140 encePairwiseOnDemand]: 164/172 looper letters, 42 selfloop transitions, 12 changer transitions 0/197 dead transitions. [2023-11-26 12:05:31,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 197 transitions, 610 flow [2023-11-26 12:05:31,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:05:31,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:05:31,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 464 transitions. [2023-11-26 12:05:31,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8992248062015504 [2023-11-26 12:05:31,437 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 464 transitions. [2023-11-26 12:05:31,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 464 transitions. [2023-11-26 12:05:31,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:05:31,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 464 transitions. [2023-11-26 12:05:31,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:31,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:31,441 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:31,441 INFO L175 Difference]: Start difference. First operand has 177 places, 179 transitions, 442 flow. Second operand 3 states and 464 transitions. [2023-11-26 12:05:31,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 197 transitions, 610 flow [2023-11-26 12:05:31,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 197 transitions, 580 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:05:31,454 INFO L231 Difference]: Finished difference. Result has 178 places, 189 transitions, 526 flow [2023-11-26 12:05:31,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=526, PETRI_PLACES=178, PETRI_TRANSITIONS=189} [2023-11-26 12:05:31,456 INFO L281 CegarLoopForPetriNet]: 173 programPoint places, 5 predicate places. [2023-11-26 12:05:31,456 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 189 transitions, 526 flow [2023-11-26 12:05:31,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:31,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:05:31,457 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] [2023-11-26 12:05:31,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 12:05:31,458 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-11-26 12:05:31,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:31,460 INFO L85 PathProgramCache]: Analyzing trace with hash 535710550, now seen corresponding path program 1 times [2023-11-26 12:05:31,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:31,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85165918] [2023-11-26 12:05:31,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:31,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:31,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:31,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:05:31,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:31,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85165918] [2023-11-26 12:05:31,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85165918] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:31,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:31,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:05:31,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957685684] [2023-11-26 12:05:31,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:31,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:05:31,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:31,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:05:31,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:05:31,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 172 [2023-11-26 12:05:31,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 189 transitions, 526 flow. Second operand has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:31,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:05:31,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 172 [2023-11-26 12:05:31,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:05:33,555 INFO L124 PetriNetUnfolderBase]: 2291/10343 cut-off events. [2023-11-26 12:05:33,555 INFO L125 PetriNetUnfolderBase]: For 1034/1098 co-relation queries the response was YES. [2023-11-26 12:05:33,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16091 conditions, 10343 events. 2291/10343 cut-off events. For 1034/1098 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 120968 event pairs, 1380 based on Foata normal form. 4/9297 useless extension candidates. Maximal degree in co-relation 14542. Up to 2487 conditions per place. [2023-11-26 12:05:33,661 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 28 selfloop transitions, 4 changer transitions 0/200 dead transitions. [2023-11-26 12:05:33,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 200 transitions, 612 flow [2023-11-26 12:05:33,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:05:33,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:05:33,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 477 transitions. [2023-11-26 12:05:33,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9244186046511628 [2023-11-26 12:05:33,665 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 477 transitions. [2023-11-26 12:05:33,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 477 transitions. [2023-11-26 12:05:33,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:05:33,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 477 transitions. [2023-11-26 12:05:33,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:33,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:33,671 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:33,671 INFO L175 Difference]: Start difference. First operand has 178 places, 189 transitions, 526 flow. Second operand 3 states and 477 transitions. [2023-11-26 12:05:33,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 200 transitions, 612 flow [2023-11-26 12:05:33,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 200 transitions, 588 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:05:33,687 INFO L231 Difference]: Finished difference. Result has 180 places, 192 transitions, 532 flow [2023-11-26 12:05:33,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=532, PETRI_PLACES=180, PETRI_TRANSITIONS=192} [2023-11-26 12:05:33,690 INFO L281 CegarLoopForPetriNet]: 173 programPoint places, 7 predicate places. [2023-11-26 12:05:33,690 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 192 transitions, 532 flow [2023-11-26 12:05:33,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:33,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:05:33,691 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, 1, 1] [2023-11-26 12:05:33,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 12:05:33,692 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-11-26 12:05:33,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:33,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1700494259, now seen corresponding path program 1 times [2023-11-26 12:05:33,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:33,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066960299] [2023-11-26 12:05:33,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:33,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:33,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:34,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:05:34,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:34,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066960299] [2023-11-26 12:05:34,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066960299] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:34,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:34,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:05:34,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131162728] [2023-11-26 12:05:34,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:34,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:05:34,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:34,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:05:34,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:05:34,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 172 [2023-11-26 12:05:34,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 192 transitions, 532 flow. Second operand has 6 states, 6 states have (on average 143.66666666666666) internal successors, (862), 6 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:34,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:05:34,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 172 [2023-11-26 12:05:34,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:05:36,450 INFO L124 PetriNetUnfolderBase]: 2332/11779 cut-off events. [2023-11-26 12:05:36,451 INFO L125 PetriNetUnfolderBase]: For 889/963 co-relation queries the response was YES. [2023-11-26 12:05:36,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18028 conditions, 11779 events. 2332/11779 cut-off events. For 889/963 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 140111 event pairs, 1385 based on Foata normal form. 3/10634 useless extension candidates. Maximal degree in co-relation 16116. Up to 2402 conditions per place. [2023-11-26 12:05:36,568 INFO L140 encePairwiseOnDemand]: 166/172 looper letters, 53 selfloop transitions, 5 changer transitions 0/223 dead transitions. [2023-11-26 12:05:36,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 223 transitions, 710 flow [2023-11-26 12:05:36,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:05:36,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 12:05:36,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 911 transitions. [2023-11-26 12:05:36,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8827519379844961 [2023-11-26 12:05:36,572 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 911 transitions. [2023-11-26 12:05:36,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 911 transitions. [2023-11-26 12:05:36,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:05:36,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 911 transitions. [2023-11-26 12:05:36,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 151.83333333333334) internal successors, (911), 6 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:36,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 172.0) internal successors, (1204), 7 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:36,580 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 172.0) internal successors, (1204), 7 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:36,580 INFO L175 Difference]: Start difference. First operand has 180 places, 192 transitions, 532 flow. Second operand 6 states and 911 transitions. [2023-11-26 12:05:36,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 223 transitions, 710 flow [2023-11-26 12:05:36,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 223 transitions, 702 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:05:36,594 INFO L231 Difference]: Finished difference. Result has 182 places, 191 transitions, 532 flow [2023-11-26 12:05:36,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=532, PETRI_PLACES=182, PETRI_TRANSITIONS=191} [2023-11-26 12:05:36,596 INFO L281 CegarLoopForPetriNet]: 173 programPoint places, 9 predicate places. [2023-11-26 12:05:36,596 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 191 transitions, 532 flow [2023-11-26 12:05:36,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 143.66666666666666) internal successors, (862), 6 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:36,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:05:36,597 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, 1, 1, 1, 1] [2023-11-26 12:05:36,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 12:05:36,597 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting threadErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-11-26 12:05:36,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:36,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1090690801, now seen corresponding path program 1 times [2023-11-26 12:05:36,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:36,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609963245] [2023-11-26 12:05:36,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:36,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:36,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:36,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:05:36,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:36,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609963245] [2023-11-26 12:05:36,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609963245] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:36,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:36,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:05:36,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621128703] [2023-11-26 12:05:36,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:36,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:05:36,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:36,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:05:36,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:05:36,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 172 [2023-11-26 12:05:36,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 191 transitions, 532 flow. Second operand has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:36,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:05:36,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 172 [2023-11-26 12:05:36,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:05:37,985 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([404] L712-4-->L712-1: Formula: (= 0 |v_#race~threads_alive~0_7|) InVars {} OutVars{#race~threads_alive~0=|v_#race~threads_alive~0_7|} AuxVars[] AssignedVars[#race~threads_alive~0][160], [Black: 190#(= |#race~data~0| 0), 201#true, 147#L692-2true, 194#true, Black: 176#true, 90#L712-1true, 91#L692-7true, Black: 184#(= |#race~threads_alive~0| |ULTIMATE.start_main_#t~nondet12#1|), threadThread1of2ForFork0InUse, threadThread2of2ForFork0InUse]) [2023-11-26 12:05:37,986 INFO L294 olderBase$Statistics]: this new event has 142 ancestors and is cut-off event [2023-11-26 12:05:38,232 INFO L297 olderBase$Statistics]: existing Event has 135 ancestors and is cut-off event [2023-11-26 12:05:38,232 INFO L297 olderBase$Statistics]: existing Event has 135 ancestors and is cut-off event [2023-11-26 12:05:38,232 INFO L297 olderBase$Statistics]: existing Event has 142 ancestors and is cut-off event [2023-11-26 12:05:38,454 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([404] L712-4-->L712-1: Formula: (= 0 |v_#race~threads_alive~0_7|) InVars {} OutVars{#race~threads_alive~0=|v_#race~threads_alive~0_7|} AuxVars[] AssignedVars[#race~threads_alive~0][72], [Black: 190#(= |#race~data~0| 0), 201#true, 147#L692-2true, Black: 176#true, 194#true, 90#L712-1true, 98#L694true, Black: 184#(= |#race~threads_alive~0| |ULTIMATE.start_main_#t~nondet12#1|), threadThread1of2ForFork0InUse, threadThread2of2ForFork0InUse]) [2023-11-26 12:05:38,454 INFO L294 olderBase$Statistics]: this new event has 144 ancestors and is cut-off event [2023-11-26 12:05:38,455 INFO L297 olderBase$Statistics]: existing Event has 144 ancestors and is cut-off event [2023-11-26 12:05:38,455 INFO L297 olderBase$Statistics]: existing Event has 137 ancestors and is cut-off event [2023-11-26 12:05:38,455 INFO L297 olderBase$Statistics]: existing Event has 137 ancestors and is cut-off event [2023-11-26 12:05:38,529 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([404] L712-4-->L712-1: Formula: (= 0 |v_#race~threads_alive~0_7|) InVars {} OutVars{#race~threads_alive~0=|v_#race~threads_alive~0_7|} AuxVars[] AssignedVars[#race~threads_alive~0][72], [Black: 190#(= |#race~data~0| 0), 201#true, 147#L692-2true, 194#true, Black: 176#true, 90#L712-1true, 145#L694-3true, Black: 184#(= |#race~threads_alive~0| |ULTIMATE.start_main_#t~nondet12#1|), threadThread1of2ForFork0InUse, threadThread2of2ForFork0InUse]) [2023-11-26 12:05:38,529 INFO L294 olderBase$Statistics]: this new event has 145 ancestors and is cut-off event [2023-11-26 12:05:38,529 INFO L297 olderBase$Statistics]: existing Event has 138 ancestors and is cut-off event [2023-11-26 12:05:38,530 INFO L297 olderBase$Statistics]: existing Event has 145 ancestors and is cut-off event [2023-11-26 12:05:38,530 INFO L297 olderBase$Statistics]: existing Event has 138 ancestors and is cut-off event [2023-11-26 12:05:38,664 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([404] L712-4-->L712-1: Formula: (= 0 |v_#race~threads_alive~0_7|) InVars {} OutVars{#race~threads_alive~0=|v_#race~threads_alive~0_7|} AuxVars[] AssignedVars[#race~threads_alive~0][72], [Black: 190#(= |#race~data~0| 0), 111#L695-3true, 201#true, 147#L692-2true, Black: 176#true, 194#true, 90#L712-1true, Black: 184#(= |#race~threads_alive~0| |ULTIMATE.start_main_#t~nondet12#1|), threadThread1of2ForFork0InUse, threadThread2of2ForFork0InUse]) [2023-11-26 12:05:38,664 INFO L294 olderBase$Statistics]: this new event has 147 ancestors and is cut-off event [2023-11-26 12:05:38,665 INFO L297 olderBase$Statistics]: existing Event has 140 ancestors and is cut-off event [2023-11-26 12:05:38,665 INFO L297 olderBase$Statistics]: existing Event has 147 ancestors and is cut-off event [2023-11-26 12:05:38,665 INFO L297 olderBase$Statistics]: existing Event has 140 ancestors and is cut-off event [2023-11-26 12:05:39,321 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([404] L712-4-->L712-1: Formula: (= 0 |v_#race~threads_alive~0_7|) InVars {} OutVars{#race~threads_alive~0=|v_#race~threads_alive~0_7|} AuxVars[] AssignedVars[#race~threads_alive~0][72], [Black: 190#(= |#race~data~0| 0), 201#true, 147#L692-2true, 170#L697-3true, 194#true, Black: 176#true, 90#L712-1true, Black: 184#(= |#race~threads_alive~0| |ULTIMATE.start_main_#t~nondet12#1|), threadThread1of2ForFork0InUse, threadThread2of2ForFork0InUse]) [2023-11-26 12:05:39,322 INFO L294 olderBase$Statistics]: this new event has 157 ancestors and is cut-off event [2023-11-26 12:05:39,322 INFO L297 olderBase$Statistics]: existing Event has 150 ancestors and is cut-off event [2023-11-26 12:05:39,322 INFO L297 olderBase$Statistics]: existing Event has 157 ancestors and is cut-off event [2023-11-26 12:05:39,322 INFO L297 olderBase$Statistics]: existing Event has 150 ancestors and is cut-off event [2023-11-26 12:05:39,761 INFO L124 PetriNetUnfolderBase]: 4357/14940 cut-off events. [2023-11-26 12:05:39,761 INFO L125 PetriNetUnfolderBase]: For 5344/5772 co-relation queries the response was YES. [2023-11-26 12:05:39,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27114 conditions, 14940 events. 4357/14940 cut-off events. For 5344/5772 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 171906 event pairs, 2217 based on Foata normal form. 111/13302 useless extension candidates. Maximal degree in co-relation 24183. Up to 5572 conditions per place. [2023-11-26 12:05:39,875 INFO L140 encePairwiseOnDemand]: 163/172 looper letters, 49 selfloop transitions, 19 changer transitions 0/217 dead transitions. [2023-11-26 12:05:39,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 217 transitions, 769 flow [2023-11-26 12:05:39,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:05:39,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:05:39,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 472 transitions. [2023-11-26 12:05:39,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9147286821705426 [2023-11-26 12:05:39,878 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 472 transitions. [2023-11-26 12:05:39,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 472 transitions. [2023-11-26 12:05:39,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:05:39,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 472 transitions. [2023-11-26 12:05:39,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:39,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:39,885 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:39,885 INFO L175 Difference]: Start difference. First operand has 182 places, 191 transitions, 532 flow. Second operand 3 states and 472 transitions. [2023-11-26 12:05:39,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 217 transitions, 769 flow [2023-11-26 12:05:39,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 217 transitions, 759 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-26 12:05:39,894 INFO L231 Difference]: Finished difference. Result has 181 places, 206 transitions, 704 flow [2023-11-26 12:05:39,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=704, PETRI_PLACES=181, PETRI_TRANSITIONS=206} [2023-11-26 12:05:39,896 INFO L281 CegarLoopForPetriNet]: 173 programPoint places, 8 predicate places. [2023-11-26 12:05:39,896 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 206 transitions, 704 flow [2023-11-26 12:05:39,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:39,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:05:39,897 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:05:39,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 12:05:39,897 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting threadErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-11-26 12:05:39,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:39,898 INFO L85 PathProgramCache]: Analyzing trace with hash 577895032, now seen corresponding path program 1 times [2023-11-26 12:05:39,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:39,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128479555] [2023-11-26 12:05:39,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:39,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:39,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:39,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:05:39,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:39,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128479555] [2023-11-26 12:05:39,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128479555] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:39,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:39,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:05:39,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140056871] [2023-11-26 12:05:39,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:39,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:05:39,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:39,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:05:39,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:05:39,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 172 [2023-11-26 12:05:39,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 206 transitions, 704 flow. Second operand has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:39,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:05:39,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 172 [2023-11-26 12:05:39,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:05:40,872 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([404] L712-4-->L712-1: Formula: (= 0 |v_#race~threads_alive~0_7|) InVars {} OutVars{#race~threads_alive~0=|v_#race~threads_alive~0_7|} AuxVars[] AssignedVars[#race~threads_alive~0][156], [Black: 190#(= |#race~data~0| 0), 201#true, 147#L692-2true, Black: 176#true, 90#L712-1true, 91#L692-7true, 207#true, Black: 184#(= |#race~threads_alive~0| |ULTIMATE.start_main_#t~nondet12#1|), threadThread1of2ForFork0InUse, threadThread2of2ForFork0InUse, Black: 203#(= |threadThread1of2ForFork0_#t~nondet2| |#race~threads_alive~0|)]) [2023-11-26 12:05:40,873 INFO L294 olderBase$Statistics]: this new event has 142 ancestors and is cut-off event [2023-11-26 12:05:40,873 INFO L297 olderBase$Statistics]: existing Event has 142 ancestors and is cut-off event [2023-11-26 12:05:40,873 INFO L297 olderBase$Statistics]: existing Event has 135 ancestors and is cut-off event [2023-11-26 12:05:40,874 INFO L297 olderBase$Statistics]: existing Event has 135 ancestors and is cut-off event [2023-11-26 12:05:41,019 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([404] L712-4-->L712-1: Formula: (= 0 |v_#race~threads_alive~0_7|) InVars {} OutVars{#race~threads_alive~0=|v_#race~threads_alive~0_7|} AuxVars[] AssignedVars[#race~threads_alive~0][72], [Black: 190#(= |#race~data~0| 0), 201#true, 147#L692-2true, Black: 176#true, 90#L712-1true, 98#L694true, 207#true, Black: 184#(= |#race~threads_alive~0| |ULTIMATE.start_main_#t~nondet12#1|), threadThread1of2ForFork0InUse, threadThread2of2ForFork0InUse, Black: 203#(= |threadThread1of2ForFork0_#t~nondet2| |#race~threads_alive~0|)]) [2023-11-26 12:05:41,020 INFO L294 olderBase$Statistics]: this new event has 144 ancestors and is cut-off event [2023-11-26 12:05:41,020 INFO L297 olderBase$Statistics]: existing Event has 137 ancestors and is cut-off event [2023-11-26 12:05:41,020 INFO L297 olderBase$Statistics]: existing Event has 137 ancestors and is cut-off event [2023-11-26 12:05:41,020 INFO L297 olderBase$Statistics]: existing Event has 144 ancestors and is cut-off event [2023-11-26 12:05:42,442 INFO L124 PetriNetUnfolderBase]: 3672/15174 cut-off events. [2023-11-26 12:05:42,442 INFO L125 PetriNetUnfolderBase]: For 5288/5602 co-relation queries the response was YES. [2023-11-26 12:05:42,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27074 conditions, 15174 events. 3672/15174 cut-off events. For 5288/5602 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 184827 event pairs, 1926 based on Foata normal form. 13/13768 useless extension candidates. Maximal degree in co-relation 24499. Up to 3881 conditions per place. [2023-11-26 12:05:42,569 INFO L140 encePairwiseOnDemand]: 166/172 looper letters, 34 selfloop transitions, 7 changer transitions 0/222 dead transitions. [2023-11-26 12:05:42,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 222 transitions, 829 flow [2023-11-26 12:05:42,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:05:42,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:05:42,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 477 transitions. [2023-11-26 12:05:42,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9244186046511628 [2023-11-26 12:05:42,572 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 477 transitions. [2023-11-26 12:05:42,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 477 transitions. [2023-11-26 12:05:42,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:05:42,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 477 transitions. [2023-11-26 12:05:42,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:42,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:42,577 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:42,577 INFO L175 Difference]: Start difference. First operand has 181 places, 206 transitions, 704 flow. Second operand 3 states and 477 transitions. [2023-11-26 12:05:42,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 222 transitions, 829 flow [2023-11-26 12:05:42,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 222 transitions, 791 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:05:42,603 INFO L231 Difference]: Finished difference. Result has 183 places, 211 transitions, 722 flow [2023-11-26 12:05:42,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=722, PETRI_PLACES=183, PETRI_TRANSITIONS=211} [2023-11-26 12:05:42,605 INFO L281 CegarLoopForPetriNet]: 173 programPoint places, 10 predicate places. [2023-11-26 12:05:42,605 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 211 transitions, 722 flow [2023-11-26 12:05:42,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:42,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:05:42,606 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:05:42,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 12:05:42,606 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-11-26 12:05:42,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:42,607 INFO L85 PathProgramCache]: Analyzing trace with hash -744413251, now seen corresponding path program 1 times [2023-11-26 12:05:42,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:42,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372548675] [2023-11-26 12:05:42,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:42,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:42,724 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 12:05:42,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:42,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372548675] [2023-11-26 12:05:42,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372548675] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:42,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:42,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:05:42,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327067514] [2023-11-26 12:05:42,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:42,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:05:42,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:42,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:05:42,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:05:42,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 172 [2023-11-26 12:05:42,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 211 transitions, 722 flow. Second operand has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:42,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:05:42,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 172 [2023-11-26 12:05:42,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:05:43,401 INFO L124 PetriNetUnfolderBase]: 544/4025 cut-off events. [2023-11-26 12:05:43,401 INFO L125 PetriNetUnfolderBase]: For 1131/1327 co-relation queries the response was YES. [2023-11-26 12:05:43,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6789 conditions, 4025 events. 544/4025 cut-off events. For 1131/1327 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 41225 event pairs, 197 based on Foata normal form. 66/3830 useless extension candidates. Maximal degree in co-relation 5993. Up to 535 conditions per place. [2023-11-26 12:05:43,424 INFO L140 encePairwiseOnDemand]: 160/172 looper letters, 15 selfloop transitions, 12 changer transitions 0/211 dead transitions. [2023-11-26 12:05:43,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 211 transitions, 727 flow [2023-11-26 12:05:43,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:05:43,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:05:43,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 488 transitions. [2023-11-26 12:05:43,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9457364341085271 [2023-11-26 12:05:43,428 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 488 transitions. [2023-11-26 12:05:43,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 488 transitions. [2023-11-26 12:05:43,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:05:43,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 488 transitions. [2023-11-26 12:05:43,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:43,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:43,434 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:43,435 INFO L175 Difference]: Start difference. First operand has 183 places, 211 transitions, 722 flow. Second operand 3 states and 488 transitions. [2023-11-26 12:05:43,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 211 transitions, 727 flow [2023-11-26 12:05:43,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 211 transitions, 713 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:05:43,445 INFO L231 Difference]: Finished difference. Result has 184 places, 208 transitions, 698 flow [2023-11-26 12:05:43,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=698, PETRI_PLACES=184, PETRI_TRANSITIONS=208} [2023-11-26 12:05:43,446 INFO L281 CegarLoopForPetriNet]: 173 programPoint places, 11 predicate places. [2023-11-26 12:05:43,447 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 208 transitions, 698 flow [2023-11-26 12:05:43,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:43,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:05:43,448 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:05:43,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-26 12:05:43,448 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting threadErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-11-26 12:05:43,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:43,448 INFO L85 PathProgramCache]: Analyzing trace with hash -717468397, now seen corresponding path program 1 times [2023-11-26 12:05:43,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:43,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414729680] [2023-11-26 12:05:43,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:43,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:43,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:43,506 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-26 12:05:43,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:43,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414729680] [2023-11-26 12:05:43,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414729680] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:43,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:43,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:05:43,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367640567] [2023-11-26 12:05:43,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:43,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:05:43,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:43,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:05:43,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:05:43,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 172 [2023-11-26 12:05:43,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 208 transitions, 698 flow. Second operand has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:43,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:05:43,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 172 [2023-11-26 12:05:43,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:05:44,719 INFO L124 PetriNetUnfolderBase]: 840/4808 cut-off events. [2023-11-26 12:05:44,720 INFO L125 PetriNetUnfolderBase]: For 2723/3181 co-relation queries the response was YES. [2023-11-26 12:05:44,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9724 conditions, 4808 events. 840/4808 cut-off events. For 2723/3181 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 49879 event pairs, 412 based on Foata normal form. 9/4483 useless extension candidates. Maximal degree in co-relation 8725. Up to 1408 conditions per place. [2023-11-26 12:05:44,754 INFO L140 encePairwiseOnDemand]: 165/172 looper letters, 56 selfloop transitions, 11 changer transitions 0/223 dead transitions. [2023-11-26 12:05:44,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 223 transitions, 907 flow [2023-11-26 12:05:44,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:05:44,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:05:44,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 467 transitions. [2023-11-26 12:05:44,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9050387596899225 [2023-11-26 12:05:44,758 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 467 transitions. [2023-11-26 12:05:44,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 467 transitions. [2023-11-26 12:05:44,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:05:44,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 467 transitions. [2023-11-26 12:05:44,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:44,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:44,763 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:44,764 INFO L175 Difference]: Start difference. First operand has 184 places, 208 transitions, 698 flow. Second operand 3 states and 467 transitions. [2023-11-26 12:05:44,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 223 transitions, 907 flow [2023-11-26 12:05:44,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 223 transitions, 888 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:05:44,776 INFO L231 Difference]: Finished difference. Result has 187 places, 215 transitions, 784 flow [2023-11-26 12:05:44,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=784, PETRI_PLACES=187, PETRI_TRANSITIONS=215} [2023-11-26 12:05:44,778 INFO L281 CegarLoopForPetriNet]: 173 programPoint places, 14 predicate places. [2023-11-26 12:05:44,778 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 215 transitions, 784 flow [2023-11-26 12:05:44,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:44,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:05:44,779 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:05:44,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-26 12:05:44,779 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-11-26 12:05:44,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:44,780 INFO L85 PathProgramCache]: Analyzing trace with hash 956865416, now seen corresponding path program 1 times [2023-11-26 12:05:44,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:44,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817085096] [2023-11-26 12:05:44,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:44,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:44,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:05:44,814 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 12:05:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:05:44,862 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 12:05:44,862 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 12:05:44,864 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 15 remaining) [2023-11-26 12:05:44,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2023-11-26 12:05:44,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2023-11-26 12:05:44,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2023-11-26 12:05:44,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2023-11-26 12:05:44,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 15 remaining) [2023-11-26 12:05:44,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2023-11-26 12:05:44,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2023-11-26 12:05:44,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2023-11-26 12:05:44,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2023-11-26 12:05:44,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2023-11-26 12:05:44,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2023-11-26 12:05:44,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2023-11-26 12:05:44,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2023-11-26 12:05:44,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2023-11-26 12:05:44,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-26 12:05:44,869 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:05:44,876 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-11-26 12:05:44,877 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 12:05:44,992 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-11-26 12:05:44,996 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre14 could not be translated [2023-11-26 12:05:44,998 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem16 could not be translated [2023-11-26 12:05:44,999 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem16 could not be translated [2023-11-26 12:05:45,006 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-26 12:05:45,007 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-26 12:05:45,008 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-26 12:05:45,008 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet3 could not be translated [2023-11-26 12:05:45,009 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated [2023-11-26 12:05:45,010 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated [2023-11-26 12:05:45,010 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet6 could not be translated [2023-11-26 12:05:45,011 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated [2023-11-26 12:05:45,012 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet6 could not be translated [2023-11-26 12:05:45,012 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated [2023-11-26 12:05:45,026 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:05:45 BasicIcfg [2023-11-26 12:05:45,026 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 12:05:45,027 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 12:05:45,027 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 12:05:45,027 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 12:05:45,028 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:05:22" (3/4) ... [2023-11-26 12:05:45,030 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-26 12:05:45,031 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 12:05:45,032 INFO L158 Benchmark]: Toolchain (without parser) took 23642.27ms. Allocated memory was 144.7MB in the beginning and 7.5GB in the end (delta: 7.4GB). Free memory was 108.0MB in the beginning and 6.8GB in the end (delta: -6.7GB). Peak memory consumption was 750.8MB. Max. memory is 16.1GB. [2023-11-26 12:05:45,032 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 115.3MB. Free memory is still 88.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 12:05:45,033 INFO L158 Benchmark]: CACSL2BoogieTranslator took 733.19ms. Allocated memory is still 144.7MB. Free memory was 107.7MB in the beginning and 87.4MB in the end (delta: 20.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-26 12:05:45,033 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.29ms. Allocated memory is still 144.7MB. Free memory was 87.4MB in the beginning and 85.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 12:05:45,034 INFO L158 Benchmark]: Boogie Preprocessor took 61.76ms. Allocated memory is still 144.7MB. Free memory was 85.2MB in the beginning and 83.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 12:05:45,034 INFO L158 Benchmark]: RCFGBuilder took 584.43ms. Allocated memory is still 144.7MB. Free memory was 83.5MB in the beginning and 64.4MB in the end (delta: 19.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-26 12:05:45,035 INFO L158 Benchmark]: TraceAbstraction took 22132.03ms. Allocated memory was 144.7MB in the beginning and 7.5GB in the end (delta: 7.4GB). Free memory was 113.5MB in the beginning and 6.8GB in the end (delta: -6.6GB). Peak memory consumption was 755.2MB. Max. memory is 16.1GB. [2023-11-26 12:05:45,035 INFO L158 Benchmark]: Witness Printer took 4.61ms. Allocated memory is still 7.5GB. Free memory is still 6.8GB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 12:05:45,038 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 115.3MB. Free memory is still 88.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 733.19ms. Allocated memory is still 144.7MB. Free memory was 107.7MB in the beginning and 87.4MB in the end (delta: 20.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.29ms. Allocated memory is still 144.7MB. Free memory was 87.4MB in the beginning and 85.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.76ms. Allocated memory is still 144.7MB. Free memory was 85.2MB in the beginning and 83.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 584.43ms. Allocated memory is still 144.7MB. Free memory was 83.5MB in the beginning and 64.4MB in the end (delta: 19.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 22132.03ms. Allocated memory was 144.7MB in the beginning and 7.5GB in the end (delta: 7.4GB). Free memory was 113.5MB in the beginning and 6.8GB in the end (delta: -6.6GB). Peak memory consumption was 755.2MB. Max. memory is 16.1GB. * Witness Printer took 4.61ms. Allocated memory is still 7.5GB. Free memory is still 6.8GB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem16 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem16 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - DataRaceFoundResult [Line: 715]: Data race detected [2023-11-26 12:05:45,105 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-11-26 12:05:45,109 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre14 could not be translated [2023-11-26 12:05:45,110 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem16 could not be translated [2023-11-26 12:05:45,110 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem16 could not be translated [2023-11-26 12:05:45,111 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-26 12:05:45,112 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-26 12:05:45,112 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-26 12:05:45,113 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet3 could not be translated [2023-11-26 12:05:45,113 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated [2023-11-26 12:05:45,113 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated [2023-11-26 12:05:45,114 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet6 could not be translated [2023-11-26 12:05:45,114 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated [2023-11-26 12:05:45,117 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet6 could not be translated [2023-11-26 12:05:45,117 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated [2023-11-26 12:05:45,172 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-11-26 12:05:45,174 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre14 could not be translated [2023-11-26 12:05:45,175 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem16 could not be translated [2023-11-26 12:05:45,175 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem16 could not be translated [2023-11-26 12:05:45,176 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-26 12:05:45,176 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-26 12:05:45,176 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-26 12:05:45,176 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet3 could not be translated [2023-11-26 12:05:45,177 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated [2023-11-26 12:05:45,177 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated [2023-11-26 12:05:45,177 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet6 could not be translated [2023-11-26 12:05:45,177 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated [2023-11-26 12:05:45,178 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet6 could not be translated [2023-11-26 12:05:45,178 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated Data race detected The following path leads to a data race: [L685] 0 int threads_alive = 0; VAL [threads_alive=0] [L686] 0 pthread_mutex_t threads_alive_mutex = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; VAL [threads_alive=0, threads_alive_mutex={1:0}] [L687] 0 pthread_cond_t threads_alive_cond = { { {0}, {0}, {0, 0}, {0, 0}, 0, 0, {0, 0} } }; VAL [threads_alive=0, threads_alive_cond={2:0}, threads_alive_mutex={1:0}] [L688] 0 int data = 0; VAL [data=0, threads_alive=0, threads_alive_cond={2:0}, threads_alive_mutex={1:0}] [L689] 0 pthread_mutex_t data_mutex = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; VAL [data=0, data_mutex={3:0}, threads_alive=0, threads_alive_cond={2:0}, threads_alive_mutex={1:0}] [L701] 0 int threads_total = __VERIFIER_nondet_int(); VAL [data=0, data_mutex={3:0}, threads_alive=0, threads_alive_cond={2:0}, threads_alive_mutex={1:0}, threads_total=1] [L702] CALL 0 assume_abort_if_not(threads_total >= 0) [L682] COND FALSE 0 !(!cond) VAL [\old(cond)=1, cond=1, data=0, data_mutex={3:0}, threads_alive=0, threads_alive_cond={2:0}, threads_alive_mutex={1:0}] [L702] RET 0 assume_abort_if_not(threads_total >= 0) [L703] 0 int i = 0; VAL [data=0, data_mutex={3:0}, i=0, threads_alive=0, threads_alive_cond={2:0}, threads_alive_mutex={1:0}, threads_total=1] [L703] COND TRUE 0 i < threads_total VAL [data=0, data_mutex={3:0}, i=0, threads_alive=0, threads_alive_cond={2:0}, threads_alive_mutex={1:0}, threads_total=1] [L705] 0 threads_alive++ VAL [data=0, data_mutex={3:0}, i=0, threads_alive=1, threads_alive_cond={2:0}, threads_alive_mutex={1:0}, threads_total=1] [L707] 0 pthread_t tid; VAL [data=0, data_mutex={3:0}, i=0, threads_alive=1, threads_alive_cond={2:0}, threads_alive_mutex={1:0}, threads_total=1, tid={5:0}] [L708] FCALL, FORK 0 pthread_create(&tid, ((void *)0), &thread, ((void *)0)) VAL [arg={0:0}, data=0, data_mutex={3:0}, i=0, threads_alive=1, threads_alive_cond={2:0}, threads_alive_mutex={1:0}, threads_total=1, tid={5:0}] [L709] EXPR 0 \read(tid) VAL [arg={0:0}, data=0, data_mutex={3:0}, i=0, threads_alive=1, threads_alive_cond={2:0}, threads_alive_mutex={1:0}, threads_total=1, tid={5:0}] [L709] 0 pthread_detach(tid) VAL [arg={0:0}, data=0, data_mutex={3:0}, i=0, threads_alive=1, threads_alive_cond={2:0}, threads_alive_mutex={1:0}, threads_total=1, tid={5:0}] [L703] 0 i++ VAL [arg={0:0}, data=0, data_mutex={3:0}, i=1, threads_alive=1, threads_alive_cond={2:0}, threads_alive_mutex={1:0}, threads_total=1, tid={5:0}] [L703] COND FALSE 0 !(i < threads_total) VAL [arg={0:0}, data=0, data_mutex={3:0}, i=1, threads_alive=1, threads_alive_cond={2:0}, threads_alive_mutex={1:0}, threads_total=1] [L692] 1 threads_alive-- VAL [arg={0:0}, arg={0:0}, data=0, data_mutex={3:0}, threads_alive=0, threads_alive_cond={2:0}, threads_alive_mutex={1:0}] [L712] COND FALSE 0 !(\read(threads_alive)) VAL [arg={0:0}, arg={0:0}, data=0, data_mutex={3:0}, threads_alive=0, threads_alive_cond={2:0}, threads_alive_mutex={1:0}, threads_total=1] [L696] 1 data = __VERIFIER_nondet_int() VAL [arg={0:0}, arg={0:0}, data=0, data_mutex={3:0}, threads_alive=0, threads_alive_cond={2:0}, threads_alive_mutex={1:0}] [L715] 0 return data; VAL [arg={0:0}, arg={0:0}, data=0, data_mutex={3:0}, threads_alive=0, threads_alive_cond={2:0}, threads_alive_mutex={1:0}, threads_total=1] [L696] 1 data = __VERIFIER_nondet_int() VAL [arg={0:0}, arg={0:0}, data=0, data_mutex={3:0}, threads_alive=0, threads_alive_cond={2:0}, threads_alive_mutex={1:0}] [L715] 0 return data; VAL [arg={0:0}, arg={0:0}, data=0, data_mutex={3:0}, threads_alive=0, threads_alive_cond={2:0}, threads_alive_mutex={1:0}, threads_total=1] Now there is a data race on ~data~0 between C: data = __VERIFIER_nondet_int() [696] and C: return data; [715] - UnprovableResult [Line: 705]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 705]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 709]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 708]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 692]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 692]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 696]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 169 locations, 12 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.9s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 200 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 98 mSDsluCounter, 29 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 370 IncrementalHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 29 mSDtfsCounter, 370 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=474occurred in iteration=5, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 572 NumberOfCodeBlocks, 572 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 467 ConstructedInterpolants, 0 QuantifiedInterpolants, 606 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 9/9 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 201 locations, 15 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 17.8s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 16.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 355 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 166 mSDsluCounter, 85 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 669 IncrementalHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 85 mSDtfsCounter, 669 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=784occurred in iteration=8, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 693 NumberOfCodeBlocks, 693 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 574 ConstructedInterpolants, 0 QuantifiedInterpolants, 697 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 28/28 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-26 12:05:45,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8acc9ba5-33a2-4e1b-99bb-4f130a4b45da/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE