./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583c4b13-6c83-4b21-b649-9ff3cb783ae7/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583c4b13-6c83-4b21-b649-9ff3cb783ae7/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583c4b13-6c83-4b21-b649-9ff3cb783ae7/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583c4b13-6c83-4b21-b649-9ff3cb783ae7/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583c4b13-6c83-4b21-b649-9ff3cb783ae7/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583c4b13-6c83-4b21-b649-9ff3cb783ae7/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 48ddce9ee02b3ea4431cf137593b71facb450c3e223dbff4f116c3c0ac1377b5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:04:40,514 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:04:40,620 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583c4b13-6c83-4b21-b649-9ff3cb783ae7/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 08:04:40,626 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:04:40,627 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:04:40,668 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:04:40,668 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:04:40,669 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:04:40,670 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:04:40,676 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:04:40,677 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:04:40,678 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:04:40,678 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:04:40,680 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:04:40,681 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:04:40,681 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:04:40,682 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:04:40,682 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:04:40,683 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:04:40,683 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:04:40,684 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:04:40,684 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:04:40,685 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 08:04:40,687 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:04:40,687 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:04:40,688 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:04:40,688 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:04:40,689 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:04:40,690 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:04:40,690 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:04:40,691 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:04:40,692 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:04:40,692 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:04:40,692 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:04:40,692 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:04:40,692 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:04:40,692 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:04:40,693 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:04:40,693 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:04:40,693 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:04:40,693 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:04:40,694 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_583c4b13-6c83-4b21-b649-9ff3cb783ae7/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583c4b13-6c83-4b21-b649-9ff3cb783ae7/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48ddce9ee02b3ea4431cf137593b71facb450c3e223dbff4f116c3c0ac1377b5 [2023-11-19 08:04:40,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:04:41,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:04:41,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:04:41,011 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:04:41,011 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:04:41,012 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583c4b13-6c83-4b21-b649-9ff3cb783ae7/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c [2023-11-19 08:04:44,141 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:04:44,361 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:04:44,362 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583c4b13-6c83-4b21-b649-9ff3cb783ae7/sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c [2023-11-19 08:04:44,372 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583c4b13-6c83-4b21-b649-9ff3cb783ae7/bin/uautomizer-verify-uCwYo4JHxu/data/e430e02cc/c528abe0615c40e79725fb62cb68040d/FLAGaee1d8b36 [2023-11-19 08:04:44,388 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583c4b13-6c83-4b21-b649-9ff3cb783ae7/bin/uautomizer-verify-uCwYo4JHxu/data/e430e02cc/c528abe0615c40e79725fb62cb68040d [2023-11-19 08:04:44,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:04:44,393 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:04:44,395 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:04:44,395 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:04:44,402 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:04:44,404 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:04:44" (1/1) ... [2023-11-19 08:04:44,405 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@185b0aab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:44, skipping insertion in model container [2023-11-19 08:04:44,405 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:04:44" (1/1) ... [2023-11-19 08:04:44,458 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:04:44,720 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:04:44,732 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:04:44,794 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:04:44,814 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:04:44,814 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:44 WrapperNode [2023-11-19 08:04:44,815 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:04:44,816 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:04:44,816 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:04:44,816 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:04:44,824 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:44" (1/1) ... [2023-11-19 08:04:44,846 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:44" (1/1) ... [2023-11-19 08:04:44,916 INFO L138 Inliner]: procedures = 25, calls = 56, calls flagged for inlining = 22, calls inlined = 30, statements flattened = 905 [2023-11-19 08:04:44,917 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:04:44,918 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:04:44,918 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:04:44,918 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:04:44,933 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:44" (1/1) ... [2023-11-19 08:04:44,934 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:44" (1/1) ... [2023-11-19 08:04:44,957 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:44" (1/1) ... [2023-11-19 08:04:44,957 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:44" (1/1) ... [2023-11-19 08:04:45,008 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:44" (1/1) ... [2023-11-19 08:04:45,028 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:44" (1/1) ... [2023-11-19 08:04:45,032 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:44" (1/1) ... [2023-11-19 08:04:45,037 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:44" (1/1) ... [2023-11-19 08:04:45,060 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:04:45,061 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:04:45,062 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:04:45,062 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:04:45,063 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:44" (1/1) ... [2023-11-19 08:04:45,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:04:45,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583c4b13-6c83-4b21-b649-9ff3cb783ae7/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:45,128 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583c4b13-6c83-4b21-b649-9ff3cb783ae7/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:45,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_583c4b13-6c83-4b21-b649-9ff3cb783ae7/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:04:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:04:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:04:45,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:04:45,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:04:45,177 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 08:04:45,178 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 08:04:45,178 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 08:04:45,179 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 08:04:45,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:04:45,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 08:04:45,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:04:45,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:04:45,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:04:45,183 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 08:04:45,429 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:04:45,432 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:04:46,760 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:04:46,784 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:04:46,784 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-19 08:04:46,799 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:04:46 BoogieIcfgContainer [2023-11-19 08:04:46,799 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:04:46,801 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:04:46,801 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:04:46,805 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:04:46,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:04:44" (1/3) ... [2023-11-19 08:04:46,806 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@725cee1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:04:46, skipping insertion in model container [2023-11-19 08:04:46,806 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:44" (2/3) ... [2023-11-19 08:04:46,807 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@725cee1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:04:46, skipping insertion in model container [2023-11-19 08:04:46,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:04:46" (3/3) ... [2023-11-19 08:04:46,808 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-symm.wvr.c [2023-11-19 08:04:46,818 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 08:04:46,828 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:04:46,828 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 154 error locations. [2023-11-19 08:04:46,829 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:04:47,073 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 08:04:47,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1142 places, 1210 transitions, 2434 flow [2023-11-19 08:04:48,163 INFO L124 PetriNetUnfolderBase]: 75/1208 cut-off events. [2023-11-19 08:04:48,163 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 08:04:48,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1217 conditions, 1208 events. 75/1208 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 4299 event pairs, 0 based on Foata normal form. 0/979 useless extension candidates. Maximal degree in co-relation 927. Up to 2 conditions per place. [2023-11-19 08:04:48,221 INFO L82 GeneralOperation]: Start removeDead. Operand has 1142 places, 1210 transitions, 2434 flow [2023-11-19 08:04:48,284 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1116 places, 1182 transitions, 2376 flow [2023-11-19 08:04:48,288 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:04:48,309 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1116 places, 1182 transitions, 2376 flow [2023-11-19 08:04:48,314 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1116 places, 1182 transitions, 2376 flow [2023-11-19 08:04:48,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1116 places, 1182 transitions, 2376 flow [2023-11-19 08:04:49,055 INFO L124 PetriNetUnfolderBase]: 73/1182 cut-off events. [2023-11-19 08:04:49,055 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 08:04:49,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1191 conditions, 1182 events. 73/1182 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 4160 event pairs, 0 based on Foata normal form. 0/956 useless extension candidates. Maximal degree in co-relation 927. Up to 2 conditions per place. [2023-11-19 08:04:49,242 INFO L119 LiptonReduction]: Number of co-enabled transitions 442196 [2023-11-19 08:05:19,769 INFO L134 LiptonReduction]: Checked pairs total: 1050636 [2023-11-19 08:05:19,769 INFO L136 LiptonReduction]: Total number of compositions: 1334 [2023-11-19 08:05:19,789 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:05:19,797 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;@6b254bdc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:05:19,797 INFO L358 AbstractCegarLoop]: Starting to check reachability of 288 error locations. [2023-11-19 08:05:19,799 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:05:19,799 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 08:05:19,799 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:05:19,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:19,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 08:05:19,801 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err57ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err58ASSERT_VIOLATIONDATA_RACE (and 284 more)] === [2023-11-19 08:05:19,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:19,806 INFO L85 PathProgramCache]: Analyzing trace with hash 4984, now seen corresponding path program 1 times [2023-11-19 08:05:19,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:19,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073814346] [2023-11-19 08:05:19,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:19,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:19,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:19,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:19,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073814346] [2023-11-19 08:05:19,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073814346] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:19,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:19,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 08:05:19,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48021197] [2023-11-19 08:05:19,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:19,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:05:19,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:19,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:05:19,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:05:19,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 1180 out of 2544 [2023-11-19 08:05:19,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 331 transitions, 674 flow. Second operand has 2 states, 2 states have (on average 1180.5) internal successors, (2361), 2 states have internal predecessors, (2361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:19,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:19,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1180 of 2544 [2023-11-19 08:05:19,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:22,694 INFO L124 PetriNetUnfolderBase]: 9821/19503 cut-off events. [2023-11-19 08:05:22,694 INFO L125 PetriNetUnfolderBase]: For 218/257 co-relation queries the response was YES. [2023-11-19 08:05:22,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34373 conditions, 19503 events. 9821/19503 cut-off events. For 218/257 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 161860 event pairs, 7047 based on Foata normal form. 477/16702 useless extension candidates. Maximal degree in co-relation 33661. Up to 14720 conditions per place. [2023-11-19 08:05:22,861 INFO L140 encePairwiseOnDemand]: 2445/2544 looper letters, 134 selfloop transitions, 0 changer transitions 1/232 dead transitions. [2023-11-19 08:05:22,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 232 transitions, 746 flow [2023-11-19 08:05:22,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:05:22,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 08:05:22,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2594 transitions. [2023-11-19 08:05:22,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098270440251572 [2023-11-19 08:05:22,893 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 2594 transitions. [2023-11-19 08:05:22,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 2594 transitions. [2023-11-19 08:05:22,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:22,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 2594 transitions. [2023-11-19 08:05:22,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 1297.0) internal successors, (2594), 2 states have internal predecessors, (2594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:22,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 2544.0) internal successors, (7632), 3 states have internal predecessors, (7632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:22,944 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 2544.0) internal successors, (7632), 3 states have internal predecessors, (7632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:22,946 INFO L175 Difference]: Start difference. First operand has 303 places, 331 transitions, 674 flow. Second operand 2 states and 2594 transitions. [2023-11-19 08:05:22,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 232 transitions, 746 flow [2023-11-19 08:05:22,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 232 transitions, 738 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 08:05:22,968 INFO L231 Difference]: Finished difference. Result has 206 places, 231 transitions, 465 flow [2023-11-19 08:05:22,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2544, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=465, PETRI_PLACES=206, PETRI_TRANSITIONS=231} [2023-11-19 08:05:22,976 INFO L281 CegarLoopForPetriNet]: 303 programPoint places, -97 predicate places. [2023-11-19 08:05:22,976 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 231 transitions, 465 flow [2023-11-19 08:05:22,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1180.5) internal successors, (2361), 2 states have internal predecessors, (2361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:22,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:22,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 08:05:22,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:05:22,980 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err57ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err57ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err58ASSERT_VIOLATIONDATA_RACE (and 284 more)] === [2023-11-19 08:05:22,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:22,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1975341916, now seen corresponding path program 1 times [2023-11-19 08:05:22,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:22,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544912811] [2023-11-19 08:05:22,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:22,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:23,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:23,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:23,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544912811] [2023-11-19 08:05:23,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544912811] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:23,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:23,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:05:23,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696414835] [2023-11-19 08:05:23,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:23,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:05:23,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:23,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:05:23,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:05:23,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 1168 out of 2544 [2023-11-19 08:05:23,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 231 transitions, 465 flow. Second operand has 3 states, 3 states have (on average 1169.6666666666667) internal successors, (3509), 3 states have internal predecessors, (3509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:23,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:23,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1168 of 2544 [2023-11-19 08:05:23,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:25,800 INFO L124 PetriNetUnfolderBase]: 9821/19560 cut-off events. [2023-11-19 08:05:25,800 INFO L125 PetriNetUnfolderBase]: For 42/102 co-relation queries the response was YES. [2023-11-19 08:05:25,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34331 conditions, 19560 events. 9821/19560 cut-off events. For 42/102 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 162662 event pairs, 7047 based on Foata normal form. 0/16268 useless extension candidates. Maximal degree in co-relation 34328. Up to 14719 conditions per place. [2023-11-19 08:05:25,953 INFO L140 encePairwiseOnDemand]: 2539/2544 looper letters, 132 selfloop transitions, 4 changer transitions 0/233 dead transitions. [2023-11-19 08:05:25,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 233 transitions, 741 flow [2023-11-19 08:05:25,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:05:25,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:05:25,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3642 transitions. [2023-11-19 08:05:25,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4772012578616352 [2023-11-19 08:05:25,970 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 3642 transitions. [2023-11-19 08:05:25,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 3642 transitions. [2023-11-19 08:05:25,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:25,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 3642 transitions. [2023-11-19 08:05:25,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 1214.0) internal successors, (3642), 3 states have internal predecessors, (3642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:26,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2544.0) internal successors, (10176), 4 states have internal predecessors, (10176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:26,023 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2544.0) internal successors, (10176), 4 states have internal predecessors, (10176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:26,023 INFO L175 Difference]: Start difference. First operand has 206 places, 231 transitions, 465 flow. Second operand 3 states and 3642 transitions. [2023-11-19 08:05:26,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 233 transitions, 741 flow [2023-11-19 08:05:26,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 233 transitions, 741 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:05:26,032 INFO L231 Difference]: Finished difference. Result has 208 places, 233 transitions, 487 flow [2023-11-19 08:05:26,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2544, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=487, PETRI_PLACES=208, PETRI_TRANSITIONS=233} [2023-11-19 08:05:26,034 INFO L281 CegarLoopForPetriNet]: 303 programPoint places, -95 predicate places. [2023-11-19 08:05:26,035 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 233 transitions, 487 flow [2023-11-19 08:05:26,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1169.6666666666667) internal successors, (3509), 3 states have internal predecessors, (3509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:26,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:26,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:26,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:05:26,039 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err57ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err57ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err58ASSERT_VIOLATIONDATA_RACE (and 284 more)] === [2023-11-19 08:05:26,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:26,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1098582933, now seen corresponding path program 1 times [2023-11-19 08:05:26,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:26,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676110329] [2023-11-19 08:05:26,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:26,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:26,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:26,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:05:26,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:26,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676110329] [2023-11-19 08:05:26,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676110329] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:26,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:26,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:05:26,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225714681] [2023-11-19 08:05:26,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:26,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:05:26,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:26,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:05:26,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:05:26,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 1155 out of 2544 [2023-11-19 08:05:26,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 233 transitions, 487 flow. Second operand has 3 states, 3 states have (on average 1157.6666666666667) internal successors, (3473), 3 states have internal predecessors, (3473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:26,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:26,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1155 of 2544 [2023-11-19 08:05:26,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:28,142 INFO L124 PetriNetUnfolderBase]: 10215/19916 cut-off events. [2023-11-19 08:05:28,142 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2023-11-19 08:05:28,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35304 conditions, 19916 events. 10215/19916 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 163449 event pairs, 3344 based on Foata normal form. 0/16598 useless extension candidates. Maximal degree in co-relation 35299. Up to 15269 conditions per place. [2023-11-19 08:05:28,288 INFO L140 encePairwiseOnDemand]: 2530/2544 looper letters, 157 selfloop transitions, 6 changer transitions 0/250 dead transitions. [2023-11-19 08:05:28,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 250 transitions, 848 flow [2023-11-19 08:05:28,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:05:28,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:05:28,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3634 transitions. [2023-11-19 08:05:28,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47615303983228513 [2023-11-19 08:05:28,305 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 3634 transitions. [2023-11-19 08:05:28,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 3634 transitions. [2023-11-19 08:05:28,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:28,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 3634 transitions. [2023-11-19 08:05:28,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 1211.3333333333333) internal successors, (3634), 3 states have internal predecessors, (3634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:28,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2544.0) internal successors, (10176), 4 states have internal predecessors, (10176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:28,347 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2544.0) internal successors, (10176), 4 states have internal predecessors, (10176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:28,347 INFO L175 Difference]: Start difference. First operand has 208 places, 233 transitions, 487 flow. Second operand 3 states and 3634 transitions. [2023-11-19 08:05:28,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 250 transitions, 848 flow [2023-11-19 08:05:28,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 250 transitions, 844 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:05:28,356 INFO L231 Difference]: Finished difference. Result has 202 places, 231 transitions, 509 flow [2023-11-19 08:05:28,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2544, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=509, PETRI_PLACES=202, PETRI_TRANSITIONS=231} [2023-11-19 08:05:28,358 INFO L281 CegarLoopForPetriNet]: 303 programPoint places, -101 predicate places. [2023-11-19 08:05:28,564 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 231 transitions, 509 flow [2023-11-19 08:05:28,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1157.6666666666667) internal successors, (3473), 3 states have internal predecessors, (3473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:28,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:28,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:28,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:05:28,567 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err57ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err57ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err58ASSERT_VIOLATIONDATA_RACE (and 284 more)] === [2023-11-19 08:05:28,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:28,567 INFO L85 PathProgramCache]: Analyzing trace with hash 824971031, now seen corresponding path program 1 times [2023-11-19 08:05:28,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:28,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826261254] [2023-11-19 08:05:28,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:28,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:28,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:28,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:05:28,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:28,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826261254] [2023-11-19 08:05:28,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826261254] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:28,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:28,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:05:28,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613095743] [2023-11-19 08:05:28,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:28,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:05:28,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:28,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:05:28,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:05:28,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 1155 out of 2544 [2023-11-19 08:05:28,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 231 transitions, 509 flow. Second operand has 3 states, 3 states have (on average 1158.3333333333333) internal successors, (3475), 3 states have internal predecessors, (3475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:28,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:28,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1155 of 2544 [2023-11-19 08:05:28,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand