./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread/stack_longer-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version cf1a7837 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_e35463f9-a9d9-49b7-9fc1-9b737ce0afa3/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e35463f9-a9d9-49b7-9fc1-9b737ce0afa3/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e35463f9-a9d9-49b7-9fc1-9b737ce0afa3/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e35463f9-a9d9-49b7-9fc1-9b737ce0afa3/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack_longer-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e35463f9-a9d9-49b7-9fc1-9b737ce0afa3/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e35463f9-a9d9-49b7-9fc1-9b737ce0afa3/bin/uautomizer-verify-uTZkv6EMXl --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 4351dece6a672e511bbcb86915e62fc8a7361763ad7ab88f2e640b2d00ea50a7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:25:53,538 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:25:53,665 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e35463f9-a9d9-49b7-9fc1-9b737ce0afa3/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-12 02:25:53,671 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:25:53,673 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:25:53,710 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:25:53,712 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:25:53,712 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:25:53,714 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:25:53,718 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:25:53,720 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:25:53,721 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:25:53,721 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:25:53,723 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:25:53,724 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:25:53,724 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:25:53,725 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:25:53,725 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:25:53,726 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:25:53,726 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:25:53,726 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:25:53,729 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:25:53,729 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-12 02:25:53,730 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:25:53,730 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:25:53,731 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:25:53,731 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:25:53,732 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:25:53,733 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:25:53,733 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:25:53,734 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:25:53,735 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:25:53,735 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:25:53,736 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:25:53,736 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:25:53,736 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:25:53,736 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:25:53,737 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:25:53,737 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:25:53,737 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:25:53,738 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:25:53,739 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_e35463f9-a9d9-49b7-9fc1-9b737ce0afa3/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e35463f9-a9d9-49b7-9fc1-9b737ce0afa3/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4351dece6a672e511bbcb86915e62fc8a7361763ad7ab88f2e640b2d00ea50a7 [2023-11-12 02:25:54,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:25:54,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:25:54,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:25:54,105 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:25:54,106 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:25:54,107 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e35463f9-a9d9-49b7-9fc1-9b737ce0afa3/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread/stack_longer-1.i [2023-11-12 02:25:57,359 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:25:57,670 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:25:57,671 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e35463f9-a9d9-49b7-9fc1-9b737ce0afa3/sv-benchmarks/c/pthread/stack_longer-1.i [2023-11-12 02:25:57,691 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e35463f9-a9d9-49b7-9fc1-9b737ce0afa3/bin/uautomizer-verify-uTZkv6EMXl/data/7b73e9857/c300d9d7890b4f089a07319635d1fc28/FLAG26ded7d10 [2023-11-12 02:25:57,708 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e35463f9-a9d9-49b7-9fc1-9b737ce0afa3/bin/uautomizer-verify-uTZkv6EMXl/data/7b73e9857/c300d9d7890b4f089a07319635d1fc28 [2023-11-12 02:25:57,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:25:57,712 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:25:57,714 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:25:57,715 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:25:57,720 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:25:57,721 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:25:57" (1/1) ... [2023-11-12 02:25:57,722 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5491c30f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:57, skipping insertion in model container [2023-11-12 02:25:57,723 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:25:57" (1/1) ... [2023-11-12 02:25:57,786 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:25:58,433 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:25:58,448 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:25:58,509 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:25:58,584 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:25:58,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:58 WrapperNode [2023-11-12 02:25:58,585 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:25:58,586 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:25:58,587 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:25:58,587 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:25:58,595 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:58" (1/1) ... [2023-11-12 02:25:58,621 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:58" (1/1) ... [2023-11-12 02:25:58,661 INFO L138 Inliner]: procedures = 277, calls = 40, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 209 [2023-11-12 02:25:58,662 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:25:58,663 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:25:58,663 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:25:58,663 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:25:58,674 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:58" (1/1) ... [2023-11-12 02:25:58,674 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:58" (1/1) ... [2023-11-12 02:25:58,680 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:58" (1/1) ... [2023-11-12 02:25:58,681 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:58" (1/1) ... [2023-11-12 02:25:58,696 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:58" (1/1) ... [2023-11-12 02:25:58,701 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:58" (1/1) ... [2023-11-12 02:25:58,704 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:58" (1/1) ... [2023-11-12 02:25:58,706 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:58" (1/1) ... [2023-11-12 02:25:58,711 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:25:58,712 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:25:58,713 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:25:58,713 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:25:58,714 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:58" (1/1) ... [2023-11-12 02:25:58,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:25:58,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e35463f9-a9d9-49b7-9fc1-9b737ce0afa3/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:25:58,761 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e35463f9-a9d9-49b7-9fc1-9b737ce0afa3/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:25:58,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e35463f9-a9d9-49b7-9fc1-9b737ce0afa3/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:25:58,813 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-12 02:25:58,813 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-12 02:25:58,813 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-12 02:25:58,813 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-12 02:25:58,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:25:58,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:25:58,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:25:58,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:25:58,814 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-12 02:25:58,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:25:58,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:25:58,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:25:58,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:25:58,816 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:25:58,989 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:25:58,992 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:25:59,500 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:25:59,513 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:25:59,513 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 02:25:59,516 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:25:59 BoogieIcfgContainer [2023-11-12 02:25:59,517 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:25:59,519 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:25:59,519 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:25:59,523 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:25:59,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:25:57" (1/3) ... [2023-11-12 02:25:59,524 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@422ccb79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:25:59, skipping insertion in model container [2023-11-12 02:25:59,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:58" (2/3) ... [2023-11-12 02:25:59,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@422ccb79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:25:59, skipping insertion in model container [2023-11-12 02:25:59,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:25:59" (3/3) ... [2023-11-12 02:25:59,526 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-1.i [2023-11-12 02:25:59,536 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:25:59,549 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:25:59,549 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-12 02:25:59,549 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:25:59,708 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 02:25:59,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 231 places, 236 transitions, 486 flow [2023-11-12 02:25:59,877 INFO L124 PetriNetUnfolderBase]: 12/234 cut-off events. [2023-11-12 02:25:59,878 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:25:59,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 234 events. 12/234 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 636 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 192. Up to 3 conditions per place. [2023-11-12 02:25:59,891 INFO L82 GeneralOperation]: Start removeDead. Operand has 231 places, 236 transitions, 486 flow [2023-11-12 02:25:59,900 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 219 places, 224 transitions, 457 flow [2023-11-12 02:25:59,905 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:25:59,917 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 219 places, 224 transitions, 457 flow [2023-11-12 02:25:59,920 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 219 places, 224 transitions, 457 flow [2023-11-12 02:25:59,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 224 transitions, 457 flow [2023-11-12 02:25:59,984 INFO L124 PetriNetUnfolderBase]: 12/224 cut-off events. [2023-11-12 02:25:59,984 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:25:59,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 224 events. 12/224 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 562 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 192. Up to 3 conditions per place. [2023-11-12 02:26:00,004 INFO L119 LiptonReduction]: Number of co-enabled transitions 20606 [2023-11-12 02:26:05,105 INFO L134 LiptonReduction]: Checked pairs total: 69140 [2023-11-12 02:26:05,105 INFO L136 LiptonReduction]: Total number of compositions: 171 [2023-11-12 02:26:05,134 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:26:05,143 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;@76c069f2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:26:05,144 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2023-11-12 02:26:05,149 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:26:05,149 INFO L124 PetriNetUnfolderBase]: 1/12 cut-off events. [2023-11-12 02:26:05,149 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:26:05,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:26:05,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 02:26:05,151 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2023-11-12 02:26:05,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:05,157 INFO L85 PathProgramCache]: Analyzing trace with hash 930727142, now seen corresponding path program 1 times [2023-11-12 02:26:05,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:05,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667817470] [2023-11-12 02:26:05,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:05,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:05,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:05,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:26:05,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:05,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667817470] [2023-11-12 02:26:05,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667817470] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:05,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:05,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:26:05,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732950274] [2023-11-12 02:26:05,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:05,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:26:05,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:05,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:26:05,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:26:05,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 407 [2023-11-12 02:26:05,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 86 transitions, 181 flow. Second operand has 2 states, 2 states have (on average 225.5) internal successors, (451), 2 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:05,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:26:05,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 407 [2023-11-12 02:26:05,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:26:05,857 INFO L124 PetriNetUnfolderBase]: 735/1872 cut-off events. [2023-11-12 02:26:05,858 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-11-12 02:26:05,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3104 conditions, 1872 events. 735/1872 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 12460 event pairs, 585 based on Foata normal form. 0/1596 useless extension candidates. Maximal degree in co-relation 2880. Up to 1185 conditions per place. [2023-11-12 02:26:05,882 INFO L140 encePairwiseOnDemand]: 406/407 looper letters, 38 selfloop transitions, 0 changer transitions 0/84 dead transitions. [2023-11-12 02:26:05,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 84 transitions, 253 flow [2023-11-12 02:26:05,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:26:05,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:26:05,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 485 transitions. [2023-11-12 02:26:05,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5958230958230958 [2023-11-12 02:26:05,904 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 485 transitions. [2023-11-12 02:26:05,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 485 transitions. [2023-11-12 02:26:05,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:26:05,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 485 transitions. [2023-11-12 02:26:05,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 242.5) internal successors, (485), 2 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:05,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 407.0) internal successors, (1221), 3 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:05,925 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 407.0) internal successors, (1221), 3 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:05,927 INFO L175 Difference]: Start difference. First operand has 87 places, 86 transitions, 181 flow. Second operand 2 states and 485 transitions. [2023-11-12 02:26:05,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 84 transitions, 253 flow [2023-11-12 02:26:05,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 84 transitions, 248 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-12 02:26:05,936 INFO L231 Difference]: Finished difference. Result has 84 places, 84 transitions, 172 flow [2023-11-12 02:26:05,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=172, PETRI_PLACES=84, PETRI_TRANSITIONS=84} [2023-11-12 02:26:05,943 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -3 predicate places. [2023-11-12 02:26:05,943 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 84 transitions, 172 flow [2023-11-12 02:26:05,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 225.5) internal successors, (451), 2 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:05,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:26:05,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 02:26:05,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:26:05,946 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2023-11-12 02:26:05,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:05,947 INFO L85 PathProgramCache]: Analyzing trace with hash 930728134, now seen corresponding path program 1 times [2023-11-12 02:26:05,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:05,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290435277] [2023-11-12 02:26:05,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:05,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:06,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:26:06,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:06,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290435277] [2023-11-12 02:26:06,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290435277] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:06,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:06,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:26:06,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871602332] [2023-11-12 02:26:06,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:06,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:26:06,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:06,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:26:06,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:26:06,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 407 [2023-11-12 02:26:06,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 84 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:06,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:26:06,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 407 [2023-11-12 02:26:06,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:26:06,826 INFO L124 PetriNetUnfolderBase]: 2016/4223 cut-off events. [2023-11-12 02:26:06,827 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-11-12 02:26:06,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7698 conditions, 4223 events. 2016/4223 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 26136 event pairs, 648 based on Foata normal form. 0/3851 useless extension candidates. Maximal degree in co-relation 7695. Up to 2362 conditions per place. [2023-11-12 02:26:06,868 INFO L140 encePairwiseOnDemand]: 387/407 looper letters, 84 selfloop transitions, 14 changer transitions 0/129 dead transitions. [2023-11-12 02:26:06,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 129 transitions, 461 flow [2023-11-12 02:26:06,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:26:06,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:26:06,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 713 transitions. [2023-11-12 02:26:06,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.583947583947584 [2023-11-12 02:26:06,877 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 713 transitions. [2023-11-12 02:26:06,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 713 transitions. [2023-11-12 02:26:06,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:26:06,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 713 transitions. [2023-11-12 02:26:06,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 237.66666666666666) internal successors, (713), 3 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:06,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:06,888 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:06,889 INFO L175 Difference]: Start difference. First operand has 84 places, 84 transitions, 172 flow. Second operand 3 states and 713 transitions. [2023-11-12 02:26:06,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 129 transitions, 461 flow [2023-11-12 02:26:06,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 129 transitions, 461 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:26:06,899 INFO L231 Difference]: Finished difference. Result has 88 places, 98 transitions, 296 flow [2023-11-12 02:26:06,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=296, PETRI_PLACES=88, PETRI_TRANSITIONS=98} [2023-11-12 02:26:06,901 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 1 predicate places. [2023-11-12 02:26:06,901 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 98 transitions, 296 flow [2023-11-12 02:26:06,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:06,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:26:06,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:26:06,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:26:06,910 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2023-11-12 02:26:06,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:06,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1387870512, now seen corresponding path program 1 times [2023-11-12 02:26:06,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:06,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991033079] [2023-11-12 02:26:06,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:06,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:07,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:26:07,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:07,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991033079] [2023-11-12 02:26:07,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991033079] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:07,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:07,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:26:07,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971878450] [2023-11-12 02:26:07,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:07,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:26:07,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:07,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:26:07,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:26:07,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 407 [2023-11-12 02:26:07,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 98 transitions, 296 flow. Second operand has 3 states, 3 states have (on average 221.66666666666666) internal successors, (665), 3 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:07,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:26:07,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 407 [2023-11-12 02:26:07,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:26:08,104 INFO L124 PetriNetUnfolderBase]: 2982/6605 cut-off events. [2023-11-12 02:26:08,105 INFO L125 PetriNetUnfolderBase]: For 795/839 co-relation queries the response was YES. [2023-11-12 02:26:08,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13060 conditions, 6605 events. 2982/6605 cut-off events. For 795/839 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 48983 event pairs, 879 based on Foata normal form. 0/6036 useless extension candidates. Maximal degree in co-relation 13055. Up to 2619 conditions per place. [2023-11-12 02:26:08,171 INFO L140 encePairwiseOnDemand]: 403/407 looper letters, 83 selfloop transitions, 3 changer transitions 0/138 dead transitions. [2023-11-12 02:26:08,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 138 transitions, 579 flow [2023-11-12 02:26:08,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:26:08,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:26:08,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 734 transitions. [2023-11-12 02:26:08,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6011466011466011 [2023-11-12 02:26:08,175 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 734 transitions. [2023-11-12 02:26:08,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 734 transitions. [2023-11-12 02:26:08,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:26:08,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 734 transitions. [2023-11-12 02:26:08,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 244.66666666666666) internal successors, (734), 3 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:08,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:08,184 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:08,185 INFO L175 Difference]: Start difference. First operand has 88 places, 98 transitions, 296 flow. Second operand 3 states and 734 transitions. [2023-11-12 02:26:08,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 138 transitions, 579 flow [2023-11-12 02:26:08,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 138 transitions, 541 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:26:08,197 INFO L231 Difference]: Finished difference. Result has 90 places, 101 transitions, 294 flow [2023-11-12 02:26:08,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=294, PETRI_PLACES=90, PETRI_TRANSITIONS=101} [2023-11-12 02:26:08,199 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 3 predicate places. [2023-11-12 02:26:08,199 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 101 transitions, 294 flow [2023-11-12 02:26:08,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 221.66666666666666) internal successors, (665), 3 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:08,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:26:08,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:26:08,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:26:08,201 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2023-11-12 02:26:08,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:08,201 INFO L85 PathProgramCache]: Analyzing trace with hash 2053813007, now seen corresponding path program 1 times [2023-11-12 02:26:08,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:08,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310632272] [2023-11-12 02:26:08,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:08,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:08,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:08,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:26:08,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:08,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310632272] [2023-11-12 02:26:08,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310632272] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:08,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:08,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:26:08,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887274458] [2023-11-12 02:26:08,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:08,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:26:08,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:08,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:26:08,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:26:08,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 407 [2023-11-12 02:26:08,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 101 transitions, 294 flow. Second operand has 6 states, 6 states have (on average 210.66666666666666) internal successors, (1264), 6 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:08,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:26:08,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 407 [2023-11-12 02:26:08,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:26:14,830 INFO L124 PetriNetUnfolderBase]: 23426/42594 cut-off events. [2023-11-12 02:26:14,830 INFO L125 PetriNetUnfolderBase]: For 4664/4947 co-relation queries the response was YES. [2023-11-12 02:26:14,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86782 conditions, 42594 events. 23426/42594 cut-off events. For 4664/4947 co-relation queries the response was YES. Maximal size of possible extension queue 895. Compared 370982 event pairs, 6501 based on Foata normal form. 25/38142 useless extension candidates. Maximal degree in co-relation 86776. Up to 20152 conditions per place. [2023-11-12 02:26:15,239 INFO L140 encePairwiseOnDemand]: 397/407 looper letters, 198 selfloop transitions, 21 changer transitions 0/267 dead transitions. [2023-11-12 02:26:15,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 267 transitions, 1169 flow [2023-11-12 02:26:15,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:26:15,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:26:15,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1444 transitions. [2023-11-12 02:26:15,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5913185913185913 [2023-11-12 02:26:15,248 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1444 transitions. [2023-11-12 02:26:15,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1444 transitions. [2023-11-12 02:26:15,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:26:15,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1444 transitions. [2023-11-12 02:26:15,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 240.66666666666666) internal successors, (1444), 6 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:15,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 407.0) internal successors, (2849), 7 states have internal predecessors, (2849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:15,268 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 407.0) internal successors, (2849), 7 states have internal predecessors, (2849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:15,268 INFO L175 Difference]: Start difference. First operand has 90 places, 101 transitions, 294 flow. Second operand 6 states and 1444 transitions. [2023-11-12 02:26:15,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 267 transitions, 1169 flow [2023-11-12 02:26:15,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 267 transitions, 1155 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:26:15,290 INFO L231 Difference]: Finished difference. Result has 98 places, 121 transitions, 430 flow [2023-11-12 02:26:15,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=430, PETRI_PLACES=98, PETRI_TRANSITIONS=121} [2023-11-12 02:26:15,294 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 11 predicate places. [2023-11-12 02:26:15,295 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 121 transitions, 430 flow [2023-11-12 02:26:15,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 210.66666666666666) internal successors, (1264), 6 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:15,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:26:15,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:26:15,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:26:15,298 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2023-11-12 02:26:15,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:15,299 INFO L85 PathProgramCache]: Analyzing trace with hash -505770300, now seen corresponding path program 1 times [2023-11-12 02:26:15,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:15,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881572160] [2023-11-12 02:26:15,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:15,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:15,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:15,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:26:15,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:15,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881572160] [2023-11-12 02:26:15,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881572160] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:15,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:15,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:26:15,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901778925] [2023-11-12 02:26:15,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:15,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:26:15,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:15,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:26:15,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:26:15,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 407 [2023-11-12 02:26:15,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 121 transitions, 430 flow. Second operand has 3 states, 3 states have (on average 221.66666666666666) internal successors, (665), 3 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:15,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:26:15,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 407 [2023-11-12 02:26:15,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:26:19,891 INFO L124 PetriNetUnfolderBase]: 12020/29721 cut-off events. [2023-11-12 02:26:19,892 INFO L125 PetriNetUnfolderBase]: For 4237/4610 co-relation queries the response was YES. [2023-11-12 02:26:20,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61697 conditions, 29721 events. 12020/29721 cut-off events. For 4237/4610 co-relation queries the response was YES. Maximal size of possible extension queue 950. Compared 321049 event pairs, 3867 based on Foata normal form. 148/26984 useless extension candidates. Maximal degree in co-relation 61687. Up to 12658 conditions per place. [2023-11-12 02:26:20,255 INFO L140 encePairwiseOnDemand]: 402/407 looper letters, 82 selfloop transitions, 4 changer transitions 0/159 dead transitions. [2023-11-12 02:26:20,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 159 transitions, 717 flow [2023-11-12 02:26:20,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:26:20,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:26:20,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 726 transitions. [2023-11-12 02:26:20,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5945945945945946 [2023-11-12 02:26:20,286 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 726 transitions. [2023-11-12 02:26:20,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 726 transitions. [2023-11-12 02:26:20,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:26:20,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 726 transitions. [2023-11-12 02:26:20,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:20,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:20,310 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:20,310 INFO L175 Difference]: Start difference. First operand has 98 places, 121 transitions, 430 flow. Second operand 3 states and 726 transitions. [2023-11-12 02:26:20,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 159 transitions, 717 flow [2023-11-12 02:26:20,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 159 transitions, 717 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:26:20,351 INFO L231 Difference]: Finished difference. Result has 102 places, 124 transitions, 460 flow [2023-11-12 02:26:20,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=460, PETRI_PLACES=102, PETRI_TRANSITIONS=124} [2023-11-12 02:26:20,355 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 15 predicate places. [2023-11-12 02:26:20,355 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 124 transitions, 460 flow [2023-11-12 02:26:20,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 221.66666666666666) internal successors, (665), 3 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:20,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:26:20,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:26:20,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:26:20,357 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2023-11-12 02:26:20,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:20,358 INFO L85 PathProgramCache]: Analyzing trace with hash 542396120, now seen corresponding path program 1 times [2023-11-12 02:26:20,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:20,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585554541] [2023-11-12 02:26:20,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:20,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:20,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:20,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:26:20,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:20,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585554541] [2023-11-12 02:26:20,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585554541] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:20,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:20,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:26:20,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359810731] [2023-11-12 02:26:20,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:20,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:26:20,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:20,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:26:20,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:26:20,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 407 [2023-11-12 02:26:20,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 124 transitions, 460 flow. Second operand has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:20,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:26:20,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 407 [2023-11-12 02:26:20,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:26:29,471 INFO L124 PetriNetUnfolderBase]: 37413/68711 cut-off events. [2023-11-12 02:26:29,472 INFO L125 PetriNetUnfolderBase]: For 39001/39548 co-relation queries the response was YES. [2023-11-12 02:26:29,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173118 conditions, 68711 events. 37413/68711 cut-off events. For 39001/39548 co-relation queries the response was YES. Maximal size of possible extension queue 1499. Compared 636536 event pairs, 18522 based on Foata normal form. 0/63901 useless extension candidates. Maximal degree in co-relation 173106. Up to 52763 conditions per place. [2023-11-12 02:26:30,137 INFO L140 encePairwiseOnDemand]: 393/407 looper letters, 164 selfloop transitions, 44 changer transitions 0/251 dead transitions. [2023-11-12 02:26:30,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 251 transitions, 1276 flow [2023-11-12 02:26:30,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:26:30,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:26:30,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1354 transitions. [2023-11-12 02:26:30,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5544635544635544 [2023-11-12 02:26:30,152 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1354 transitions. [2023-11-12 02:26:30,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1354 transitions. [2023-11-12 02:26:30,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:26:30,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1354 transitions. [2023-11-12 02:26:30,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 225.66666666666666) internal successors, (1354), 6 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:30,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 407.0) internal successors, (2849), 7 states have internal predecessors, (2849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:30,182 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 407.0) internal successors, (2849), 7 states have internal predecessors, (2849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:30,183 INFO L175 Difference]: Start difference. First operand has 102 places, 124 transitions, 460 flow. Second operand 6 states and 1354 transitions. [2023-11-12 02:26:30,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 251 transitions, 1276 flow [2023-11-12 02:26:31,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 251 transitions, 1252 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:26:31,135 INFO L231 Difference]: Finished difference. Result has 109 places, 163 transitions, 758 flow [2023-11-12 02:26:31,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=758, PETRI_PLACES=109, PETRI_TRANSITIONS=163} [2023-11-12 02:26:31,136 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 22 predicate places. [2023-11-12 02:26:31,136 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 163 transitions, 758 flow [2023-11-12 02:26:31,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:31,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:26:31,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:26:31,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:26:31,138 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2023-11-12 02:26:31,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:31,138 INFO L85 PathProgramCache]: Analyzing trace with hash -986580878, now seen corresponding path program 1 times [2023-11-12 02:26:31,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:31,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721899158] [2023-11-12 02:26:31,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:31,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:31,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:31,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:26:31,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:31,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721899158] [2023-11-12 02:26:31,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721899158] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:31,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:31,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:26:31,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620601473] [2023-11-12 02:26:31,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:31,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:26:31,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:31,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:26:31,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:26:31,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 407 [2023-11-12 02:26:31,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 163 transitions, 758 flow. Second operand has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:31,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:26:31,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 407 [2023-11-12 02:26:31,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:26:38,440 INFO L124 PetriNetUnfolderBase]: 23010/54706 cut-off events. [2023-11-12 02:26:38,440 INFO L125 PetriNetUnfolderBase]: For 26671/29284 co-relation queries the response was YES. [2023-11-12 02:26:38,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133082 conditions, 54706 events. 23010/54706 cut-off events. For 26671/29284 co-relation queries the response was YES. Maximal size of possible extension queue 1509. Compared 622538 event pairs, 8712 based on Foata normal form. 441/51393 useless extension candidates. Maximal degree in co-relation 133066. Up to 22626 conditions per place. [2023-11-12 02:26:38,931 INFO L140 encePairwiseOnDemand]: 404/407 looper letters, 96 selfloop transitions, 2 changer transitions 0/209 dead transitions. [2023-11-12 02:26:38,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 209 transitions, 1124 flow [2023-11-12 02:26:38,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:26:38,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:26:38,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 728 transitions. [2023-11-12 02:26:38,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5962325962325963 [2023-11-12 02:26:38,936 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 728 transitions. [2023-11-12 02:26:38,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 728 transitions. [2023-11-12 02:26:38,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:26:38,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 728 transitions. [2023-11-12 02:26:38,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 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) [2023-11-12 02:26:38,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:38,946 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:38,946 INFO L175 Difference]: Start difference. First operand has 109 places, 163 transitions, 758 flow. Second operand 3 states and 728 transitions. [2023-11-12 02:26:38,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 209 transitions, 1124 flow [2023-11-12 02:26:39,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 209 transitions, 1100 flow, removed 12 selfloop flow, removed 0 redundant places. [2023-11-12 02:26:39,662 INFO L231 Difference]: Finished difference. Result has 112 places, 164 transitions, 746 flow [2023-11-12 02:26:39,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=746, PETRI_PLACES=112, PETRI_TRANSITIONS=164} [2023-11-12 02:26:39,664 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 25 predicate places. [2023-11-12 02:26:39,664 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 164 transitions, 746 flow [2023-11-12 02:26:39,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:39,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:26:39,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:26:39,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:26:39,665 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2023-11-12 02:26:39,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:39,666 INFO L85 PathProgramCache]: Analyzing trace with hash 280948185, now seen corresponding path program 1 times [2023-11-12 02:26:39,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:39,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249304704] [2023-11-12 02:26:39,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:39,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:39,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:39,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:26:39,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:39,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249304704] [2023-11-12 02:26:39,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249304704] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:39,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:39,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:26:39,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146190180] [2023-11-12 02:26:39,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:39,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:26:39,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:39,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:26:39,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:26:39,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 407 [2023-11-12 02:26:39,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 164 transitions, 746 flow. Second operand has 4 states, 4 states have (on average 214.75) internal successors, (859), 4 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:39,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:26:39,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 407 [2023-11-12 02:26:39,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand