./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/weaver/chl-word-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version cf1a7837 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_d1158efb-8c2b-4fea-926d-a8e99ae352ef/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1158efb-8c2b-4fea-926d-a8e99ae352ef/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_d1158efb-8c2b-4fea-926d-a8e99ae352ef/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1158efb-8c2b-4fea-926d-a8e99ae352ef/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-word-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1158efb-8c2b-4fea-926d-a8e99ae352ef/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_d1158efb-8c2b-4fea-926d-a8e99ae352ef/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 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:17:22,730 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:17:22,841 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1158efb-8c2b-4fea-926d-a8e99ae352ef/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-12 02:17:22,852 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:17:22,852 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:17:22,876 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:17:22,877 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:17:22,878 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:17:22,879 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:17:22,879 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:17:22,880 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:17:22,881 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:17:22,881 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:17:22,882 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:17:22,882 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:17:22,883 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:17:22,883 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:17:22,884 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:17:22,884 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:17:22,885 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:17:22,885 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:17:22,886 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:17:22,887 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-12 02:17:22,887 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:17:22,887 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:17:22,888 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:17:22,888 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:17:22,889 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:17:22,889 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:17:22,890 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:17:22,890 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:17:22,891 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:17:22,891 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:17:22,892 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:17:22,892 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:17:22,893 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:17:22,893 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:17:22,893 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:17:22,894 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:17:22,894 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:17:22,895 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:17:22,895 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_d1158efb-8c2b-4fea-926d-a8e99ae352ef/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1158efb-8c2b-4fea-926d-a8e99ae352ef/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 [2023-11-12 02:17:23,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:17:23,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:17:23,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:17:23,254 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:17:23,255 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:17:23,256 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1158efb-8c2b-4fea-926d-a8e99ae352ef/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2023-11-12 02:17:26,375 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:17:26,569 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:17:26,569 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1158efb-8c2b-4fea-926d-a8e99ae352ef/sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2023-11-12 02:17:26,579 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1158efb-8c2b-4fea-926d-a8e99ae352ef/bin/uautomizer-verify-uTZkv6EMXl/data/9fc9216bb/fbe34c12bd914ede81186d67e1e353aa/FLAGefe79d9f2 [2023-11-12 02:17:26,600 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1158efb-8c2b-4fea-926d-a8e99ae352ef/bin/uautomizer-verify-uTZkv6EMXl/data/9fc9216bb/fbe34c12bd914ede81186d67e1e353aa [2023-11-12 02:17:26,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:17:26,608 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:17:26,611 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:17:26,611 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:17:26,616 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:17:26,617 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:17:26" (1/1) ... [2023-11-12 02:17:26,618 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20a7d2c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:26, skipping insertion in model container [2023-11-12 02:17:26,619 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:17:26" (1/1) ... [2023-11-12 02:17:26,647 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:17:26,981 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:17:26,992 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:17:27,043 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:17:27,060 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:17:27,060 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:27 WrapperNode [2023-11-12 02:17:27,061 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:17:27,062 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:17:27,062 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:17:27,062 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:17:27,070 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:27" (1/1) ... [2023-11-12 02:17:27,087 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:27" (1/1) ... [2023-11-12 02:17:27,126 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 281 [2023-11-12 02:17:27,127 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:17:27,127 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:17:27,127 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:17:27,128 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:17:27,139 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:27" (1/1) ... [2023-11-12 02:17:27,139 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:27" (1/1) ... [2023-11-12 02:17:27,148 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:27" (1/1) ... [2023-11-12 02:17:27,149 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:27" (1/1) ... [2023-11-12 02:17:27,176 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:27" (1/1) ... [2023-11-12 02:17:27,183 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:27" (1/1) ... [2023-11-12 02:17:27,187 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:27" (1/1) ... [2023-11-12 02:17:27,191 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:27" (1/1) ... [2023-11-12 02:17:27,198 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:17:27,199 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:17:27,200 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:17:27,200 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:17:27,201 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:27" (1/1) ... [2023-11-12 02:17:27,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:17:27,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1158efb-8c2b-4fea-926d-a8e99ae352ef/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:27,236 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1158efb-8c2b-4fea-926d-a8e99ae352ef/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:17:27,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1158efb-8c2b-4fea-926d-a8e99ae352ef/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:17:27,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:17:27,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:17:27,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:17:27,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:17:27,327 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 02:17:27,327 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 02:17:27,328 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 02:17:27,328 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 02:17:27,328 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-12 02:17:27,328 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-12 02:17:27,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:17:27,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:17:27,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:17:27,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:17:27,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:17:27,333 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 02:17:27,518 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:17:27,524 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:17:28,499 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:17:28,518 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:17:28,518 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-12 02:17:28,521 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:17:28 BoogieIcfgContainer [2023-11-12 02:17:28,521 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:17:28,525 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:17:28,525 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:17:28,528 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:17:28,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:17:26" (1/3) ... [2023-11-12 02:17:28,529 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23fab85c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:17:28, skipping insertion in model container [2023-11-12 02:17:28,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:27" (2/3) ... [2023-11-12 02:17:28,530 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23fab85c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:17:28, skipping insertion in model container [2023-11-12 02:17:28,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:17:28" (3/3) ... [2023-11-12 02:17:28,532 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2023-11-12 02:17:28,541 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:17:28,552 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:17:28,553 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 80 error locations. [2023-11-12 02:17:28,553 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:17:28,780 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-12 02:17:28,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 662 places, 685 transitions, 1391 flow [2023-11-12 02:17:29,234 INFO L124 PetriNetUnfolderBase]: 33/682 cut-off events. [2023-11-12 02:17:29,235 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 02:17:29,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 695 conditions, 682 events. 33/682 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1774 event pairs, 0 based on Foata normal form. 0/569 useless extension candidates. Maximal degree in co-relation 493. Up to 3 conditions per place. [2023-11-12 02:17:29,253 INFO L82 GeneralOperation]: Start removeDead. Operand has 662 places, 685 transitions, 1391 flow [2023-11-12 02:17:29,270 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 635 places, 656 transitions, 1330 flow [2023-11-12 02:17:29,274 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:17:29,290 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 635 places, 656 transitions, 1330 flow [2023-11-12 02:17:29,295 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 635 places, 656 transitions, 1330 flow [2023-11-12 02:17:29,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 635 places, 656 transitions, 1330 flow [2023-11-12 02:17:29,578 INFO L124 PetriNetUnfolderBase]: 31/656 cut-off events. [2023-11-12 02:17:29,579 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 02:17:29,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 669 conditions, 656 events. 31/656 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1761 event pairs, 0 based on Foata normal form. 0/546 useless extension candidates. Maximal degree in co-relation 493. Up to 3 conditions per place. [2023-11-12 02:17:29,666 INFO L119 LiptonReduction]: Number of co-enabled transitions 92886 [2023-11-12 02:17:45,021 INFO L134 LiptonReduction]: Checked pairs total: 673594 [2023-11-12 02:17:45,022 INFO L136 LiptonReduction]: Total number of compositions: 539 [2023-11-12 02:17:45,050 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:17:45,058 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;@75b4f105, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:17:45,063 INFO L358 AbstractCegarLoop]: Starting to check reachability of 140 error locations. [2023-11-12 02:17:45,065 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:17:45,065 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-12 02:17:45,065 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:17:45,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:45,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:17:45,067 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 136 more)] === [2023-11-12 02:17:45,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:45,073 INFO L85 PathProgramCache]: Analyzing trace with hash 2413, now seen corresponding path program 1 times [2023-11-12 02:17:45,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:45,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876783280] [2023-11-12 02:17:45,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:45,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:45,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:45,204 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 02:17:45,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:45,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876783280] [2023-11-12 02:17:45,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876783280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:45,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:45,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:17:45,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856937912] [2023-11-12 02:17:45,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:45,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:17:45,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:45,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:17:45,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:17:45,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 664 out of 1224 [2023-11-12 02:17:45,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 268 transitions, 554 flow. Second operand has 2 states, 2 states have (on average 664.5) internal successors, (1329), 2 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states 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 02:17:45,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:45,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 664 of 1224 [2023-11-12 02:17:45,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:52,862 INFO L124 PetriNetUnfolderBase]: 18550/54708 cut-off events. [2023-11-12 02:17:52,863 INFO L125 PetriNetUnfolderBase]: For 779/779 co-relation queries the response was YES. [2023-11-12 02:17:53,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79454 conditions, 54708 events. 18550/54708 cut-off events. For 779/779 co-relation queries the response was YES. Maximal size of possible extension queue 1334. Compared 700238 event pairs, 12477 based on Foata normal form. 4571/47476 useless extension candidates. Maximal degree in co-relation 74005. Up to 24206 conditions per place. [2023-11-12 02:17:53,610 INFO L140 encePairwiseOnDemand]: 1192/1224 looper letters, 70 selfloop transitions, 0 changer transitions 1/236 dead transitions. [2023-11-12 02:17:53,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 236 transitions, 632 flow [2023-11-12 02:17:53,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:17:53,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:17:53,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1431 transitions. [2023-11-12 02:17:53,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5845588235294118 [2023-11-12 02:17:53,645 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1431 transitions. [2023-11-12 02:17:53,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1431 transitions. [2023-11-12 02:17:53,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:53,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1431 transitions. [2023-11-12 02:17:53,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 715.5) internal successors, (1431), 2 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states 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 02:17:53,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1224.0) internal successors, (3672), 3 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states 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 02:17:53,677 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1224.0) internal successors, (3672), 3 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states 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 02:17:53,679 INFO L175 Difference]: Start difference. First operand has 257 places, 268 transitions, 554 flow. Second operand 2 states and 1431 transitions. [2023-11-12 02:17:53,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 236 transitions, 632 flow [2023-11-12 02:17:53,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 236 transitions, 620 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-12 02:17:53,711 INFO L231 Difference]: Finished difference. Result has 223 places, 235 transitions, 475 flow [2023-11-12 02:17:53,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1224, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=475, PETRI_PLACES=223, PETRI_TRANSITIONS=235} [2023-11-12 02:17:53,720 INFO L281 CegarLoopForPetriNet]: 257 programPoint places, -34 predicate places. [2023-11-12 02:17:53,720 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 235 transitions, 475 flow [2023-11-12 02:17:53,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 664.5) internal successors, (1329), 2 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states 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 02:17:53,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:53,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:53,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:17:53,723 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 136 more)] === [2023-11-12 02:17:53,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:53,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1444290250, now seen corresponding path program 1 times [2023-11-12 02:17:53,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:53,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627107811] [2023-11-12 02:17:53,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:53,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:53,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:53,985 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 02:17:53,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:53,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627107811] [2023-11-12 02:17:53,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627107811] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:53,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:53,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:17:53,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41128094] [2023-11-12 02:17:53,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:53,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:17:53,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:53,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:17:53,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:17:54,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 651 out of 1224 [2023-11-12 02:17:54,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 235 transitions, 475 flow. Second operand has 3 states, 3 states have (on average 653.3333333333334) internal successors, (1960), 3 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states 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 02:17:54,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:54,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 651 of 1224 [2023-11-12 02:17:54,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:01,458 INFO L124 PetriNetUnfolderBase]: 25904/72956 cut-off events. [2023-11-12 02:18:01,458 INFO L125 PetriNetUnfolderBase]: For 223/223 co-relation queries the response was YES. [2023-11-12 02:18:01,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107224 conditions, 72956 events. 25904/72956 cut-off events. For 223/223 co-relation queries the response was YES. Maximal size of possible extension queue 1685. Compared 948648 event pairs, 13230 based on Foata normal form. 0/58897 useless extension candidates. Maximal degree in co-relation 107221. Up to 33969 conditions per place. [2023-11-12 02:18:02,205 INFO L140 encePairwiseOnDemand]: 1218/1224 looper letters, 101 selfloop transitions, 2 changer transitions 0/259 dead transitions. [2023-11-12 02:18:02,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 259 transitions, 731 flow [2023-11-12 02:18:02,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:18:02,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:18:02,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2060 transitions. [2023-11-12 02:18:02,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5610021786492375 [2023-11-12 02:18:02,225 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2060 transitions. [2023-11-12 02:18:02,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2060 transitions. [2023-11-12 02:18:02,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:02,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2060 transitions. [2023-11-12 02:18:02,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 686.6666666666666) internal successors, (2060), 3 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states 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 02:18:02,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1224.0) internal successors, (4896), 4 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states 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 02:18:02,263 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1224.0) internal successors, (4896), 4 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states 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 02:18:02,263 INFO L175 Difference]: Start difference. First operand has 223 places, 235 transitions, 475 flow. Second operand 3 states and 2060 transitions. [2023-11-12 02:18:02,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 259 transitions, 731 flow [2023-11-12 02:18:02,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 259 transitions, 731 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:18:02,283 INFO L231 Difference]: Finished difference. Result has 221 places, 233 transitions, 481 flow [2023-11-12 02:18:02,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1224, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=481, PETRI_PLACES=221, PETRI_TRANSITIONS=233} [2023-11-12 02:18:02,287 INFO L281 CegarLoopForPetriNet]: 257 programPoint places, -36 predicate places. [2023-11-12 02:18:02,288 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 233 transitions, 481 flow [2023-11-12 02:18:02,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 653.3333333333334) internal successors, (1960), 3 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states 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 02:18:02,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:02,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:02,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:18:02,299 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 136 more)] === [2023-11-12 02:18:02,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:02,300 INFO L85 PathProgramCache]: Analyzing trace with hash -688444360, now seen corresponding path program 1 times [2023-11-12 02:18:02,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:02,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504298649] [2023-11-12 02:18:02,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:02,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:02,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:02,471 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 02:18:02,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:02,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504298649] [2023-11-12 02:18:02,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504298649] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:02,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:02,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:18:02,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555894047] [2023-11-12 02:18:02,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:02,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:18:02,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:02,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:18:02,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:18:02,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 651 out of 1224 [2023-11-12 02:18:02,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 233 transitions, 481 flow. Second operand has 3 states, 3 states have (on average 653.6666666666666) internal successors, (1961), 3 states have internal predecessors, (1961), 0 states have call successors, (0), 0 states 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 02:18:02,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:02,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 651 of 1224 [2023-11-12 02:18:02,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:07,801 INFO L124 PetriNetUnfolderBase]: 24828/57218 cut-off events. [2023-11-12 02:18:07,802 INFO L125 PetriNetUnfolderBase]: For 1279/1279 co-relation queries the response was YES. [2023-11-12 02:18:07,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91176 conditions, 57218 events. 24828/57218 cut-off events. For 1279/1279 co-relation queries the response was YES. Maximal size of possible extension queue 1393. Compared 643116 event pairs, 5723 based on Foata normal form. 0/44748 useless extension candidates. Maximal degree in co-relation 91172. Up to 32294 conditions per place. [2023-11-12 02:18:08,306 INFO L140 encePairwiseOnDemand]: 1218/1224 looper letters, 101 selfloop transitions, 2 changer transitions 0/255 dead transitions. [2023-11-12 02:18:08,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 255 transitions, 743 flow [2023-11-12 02:18:08,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:18:08,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:18:08,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2056 transitions. [2023-11-12 02:18:08,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5599128540305011 [2023-11-12 02:18:08,315 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2056 transitions. [2023-11-12 02:18:08,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2056 transitions. [2023-11-12 02:18:08,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:08,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2056 transitions. [2023-11-12 02:18:08,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 685.3333333333334) internal successors, (2056), 3 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states 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 02:18:08,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1224.0) internal successors, (4896), 4 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states 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 02:18:08,339 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1224.0) internal successors, (4896), 4 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states 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 02:18:08,340 INFO L175 Difference]: Start difference. First operand has 221 places, 233 transitions, 481 flow. Second operand 3 states and 2056 transitions. [2023-11-12 02:18:08,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 255 transitions, 743 flow [2023-11-12 02:18:08,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 255 transitions, 743 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:18:08,352 INFO L231 Difference]: Finished difference. Result has 220 places, 231 transitions, 487 flow [2023-11-12 02:18:08,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1224, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=487, PETRI_PLACES=220, PETRI_TRANSITIONS=231} [2023-11-12 02:18:08,355 INFO L281 CegarLoopForPetriNet]: 257 programPoint places, -37 predicate places. [2023-11-12 02:18:08,355 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 231 transitions, 487 flow [2023-11-12 02:18:08,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 653.6666666666666) internal successors, (1961), 3 states have internal predecessors, (1961), 0 states have call successors, (0), 0 states 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 02:18:08,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:08,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:08,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:18:08,363 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 136 more)] === [2023-11-12 02:18:08,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:08,364 INFO L85 PathProgramCache]: Analyzing trace with hash 217882853, now seen corresponding path program 1 times [2023-11-12 02:18:08,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:08,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11618335] [2023-11-12 02:18:08,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:08,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:08,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:08,475 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 02:18:08,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:08,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11618335] [2023-11-12 02:18:08,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11618335] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:08,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:08,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:18:08,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582200953] [2023-11-12 02:18:08,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:08,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:18:08,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:08,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:18:08,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:18:08,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 651 out of 1224 [2023-11-12 02:18:08,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 231 transitions, 487 flow. Second operand has 3 states, 3 states have (on average 654.3333333333334) internal successors, (1963), 3 states have internal predecessors, (1963), 0 states have call successors, (0), 0 states 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 02:18:08,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:08,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 651 of 1224 [2023-11-12 02:18:08,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand