./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-deagle/reorder_c11_good-10.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964fd557-652e-4897-85fe-5aa9d363298f/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964fd557-652e-4897-85fe-5aa9d363298f/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964fd557-652e-4897-85fe-5aa9d363298f/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964fd557-652e-4897-85fe-5aa9d363298f/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-deagle/reorder_c11_good-10.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964fd557-652e-4897-85fe-5aa9d363298f/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964fd557-652e-4897-85fe-5aa9d363298f/bin/uautomizer-verify-BQ2R08f2Ya --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 053c2020ab3922d27be669eca0e75ac8051424727a4d2b2d1ab69540cc43f0a3 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:26:34,857 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:26:34,936 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964fd557-652e-4897-85fe-5aa9d363298f/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-29 01:26:34,942 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:26:34,942 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:26:34,964 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:26:34,965 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:26:34,965 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:26:34,966 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:26:34,967 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:26:34,967 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:26:34,968 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:26:34,968 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:26:34,969 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:26:34,970 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:26:34,970 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:26:34,971 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:26:34,971 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:26:34,972 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:26:34,972 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:26:34,973 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:26:34,973 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:26:34,974 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-29 01:26:34,974 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 01:26:34,975 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:26:34,975 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:26:34,976 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:26:34,976 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:26:34,977 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:26:34,977 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:26:34,978 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:26:34,978 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:26:34,979 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:26:34,979 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:26:34,979 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:26:34,980 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:26:34,980 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:26:34,981 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:26:34,981 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:26:34,981 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:26:34,981 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:26:34,982 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_964fd557-652e-4897-85fe-5aa9d363298f/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964fd557-652e-4897-85fe-5aa9d363298f/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 053c2020ab3922d27be669eca0e75ac8051424727a4d2b2d1ab69540cc43f0a3 [2023-11-29 01:26:35,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:26:35,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:26:35,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:26:35,219 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:26:35,220 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:26:35,221 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964fd557-652e-4897-85fe-5aa9d363298f/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread-deagle/reorder_c11_good-10.i [2023-11-29 01:26:37,982 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:26:38,243 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:26:38,243 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964fd557-652e-4897-85fe-5aa9d363298f/sv-benchmarks/c/pthread-deagle/reorder_c11_good-10.i [2023-11-29 01:26:38,257 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964fd557-652e-4897-85fe-5aa9d363298f/bin/uautomizer-verify-BQ2R08f2Ya/data/be0e73def/fd696b2dc8c642bba7d13ac622a5fda6/FLAGc15c36cb2 [2023-11-29 01:26:38,270 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964fd557-652e-4897-85fe-5aa9d363298f/bin/uautomizer-verify-BQ2R08f2Ya/data/be0e73def/fd696b2dc8c642bba7d13ac622a5fda6 [2023-11-29 01:26:38,273 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:26:38,277 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:26:38,279 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:26:38,279 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:26:38,283 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:26:38,284 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:26:38" (1/1) ... [2023-11-29 01:26:38,285 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f8c5307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:26:38, skipping insertion in model container [2023-11-29 01:26:38,285 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:26:38" (1/1) ... [2023-11-29 01:26:38,330 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:26:38,625 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:26:38,633 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:26:38,676 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:26:38,703 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:26:38,703 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:26:38,711 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:26:38,711 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:26:38 WrapperNode [2023-11-29 01:26:38,711 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:26:38,713 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:26:38,713 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:26:38,713 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:26:38,720 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:26:38" (1/1) ... [2023-11-29 01:26:38,735 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:26:38" (1/1) ... [2023-11-29 01:26:38,760 INFO L138 Inliner]: procedures = 163, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 168 [2023-11-29 01:26:38,761 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:26:38,761 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:26:38,762 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:26:38,762 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:26:38,771 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:26:38" (1/1) ... [2023-11-29 01:26:38,771 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:26:38" (1/1) ... [2023-11-29 01:26:38,775 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:26:38" (1/1) ... [2023-11-29 01:26:38,776 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:26:38" (1/1) ... [2023-11-29 01:26:38,785 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:26:38" (1/1) ... [2023-11-29 01:26:38,789 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:26:38" (1/1) ... [2023-11-29 01:26:38,791 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:26:38" (1/1) ... [2023-11-29 01:26:38,793 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:26:38" (1/1) ... [2023-11-29 01:26:38,797 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:26:38,798 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:26:38,798 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:26:38,798 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:26:38,799 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:26:38" (1/1) ... [2023-11-29 01:26:38,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:26:38,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964fd557-652e-4897-85fe-5aa9d363298f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:26:38,827 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964fd557-652e-4897-85fe-5aa9d363298f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:26:38,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964fd557-652e-4897-85fe-5aa9d363298f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:26:38,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-29 01:26:38,860 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2023-11-29 01:26:38,860 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2023-11-29 01:26:38,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 01:26:38,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 01:26:38,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:26:38,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 01:26:38,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:26:38,861 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2023-11-29 01:26:38,862 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2023-11-29 01:26:38,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 01:26:38,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 01:26:38,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:26:38,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:26:38,864 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 01:26:38,993 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:26:38,994 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:26:39,278 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:26:39,306 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:26:39,306 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-29 01:26:39,308 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:26:39 BoogieIcfgContainer [2023-11-29 01:26:39,308 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:26:39,311 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:26:39,312 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:26:39,315 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:26:39,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:26:38" (1/3) ... [2023-11-29 01:26:39,315 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72eea642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:26:39, skipping insertion in model container [2023-11-29 01:26:39,316 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:26:38" (2/3) ... [2023-11-29 01:26:39,316 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72eea642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:26:39, skipping insertion in model container [2023-11-29 01:26:39,316 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:26:39" (3/3) ... [2023-11-29 01:26:39,317 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_c11_good-10.i [2023-11-29 01:26:39,324 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 01:26:39,331 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:26:39,332 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2023-11-29 01:26:39,332 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 01:26:39,395 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-29 01:26:39,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 210 transitions, 440 flow [2023-11-29 01:26:39,558 INFO L124 PetriNetUnfolderBase]: 32/528 cut-off events. [2023-11-29 01:26:39,559 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-29 01:26:39,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 545 conditions, 528 events. 32/528 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2191 event pairs, 0 based on Foata normal form. 0/415 useless extension candidates. Maximal degree in co-relation 252. Up to 8 conditions per place. [2023-11-29 01:26:39,567 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 210 transitions, 440 flow [2023-11-29 01:26:39,576 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 210 transitions, 440 flow [2023-11-29 01:26:39,586 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:26:39,592 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;@6b8ef0b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:26:39,592 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2023-11-29 01:26:39,597 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:26:39,597 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-11-29 01:26:39,597 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:26:39,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:26:39,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:26:39,598 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2023-11-29 01:26:39,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:26:39,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1987670407, now seen corresponding path program 1 times [2023-11-29 01:26:39,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:26:39,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008358473] [2023-11-29 01:26:39,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:39,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:26:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:39,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:26:39,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:26:39,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008358473] [2023-11-29 01:26:39,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008358473] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:26:39,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:26:39,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:26:39,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542747203] [2023-11-29 01:26:39,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:26:39,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:26:39,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:26:39,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:26:39,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:26:39,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 210 [2023-11-29 01:26:39,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 210 transitions, 440 flow. Second operand has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 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) [2023-11-29 01:26:40,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:26:40,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 210 [2023-11-29 01:26:40,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:26:40,143 INFO L124 PetriNetUnfolderBase]: 78/681 cut-off events. [2023-11-29 01:26:40,143 INFO L125 PetriNetUnfolderBase]: For 49/57 co-relation queries the response was YES. [2023-11-29 01:26:40,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 913 conditions, 681 events. 78/681 cut-off events. For 49/57 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3414 event pairs, 64 based on Foata normal form. 48/590 useless extension candidates. Maximal degree in co-relation 594. Up to 205 conditions per place. [2023-11-29 01:26:40,151 INFO L140 encePairwiseOnDemand]: 200/210 looper letters, 31 selfloop transitions, 2 changer transitions 0/192 dead transitions. [2023-11-29 01:26:40,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 192 transitions, 470 flow [2023-11-29 01:26:40,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:26:40,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:26:40,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 539 transitions. [2023-11-29 01:26:40,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8555555555555555 [2023-11-29 01:26:40,167 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 539 transitions. [2023-11-29 01:26:40,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 539 transitions. [2023-11-29 01:26:40,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:26:40,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 539 transitions. [2023-11-29 01:26:40,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 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) [2023-11-29 01:26:40,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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) [2023-11-29 01:26:40,185 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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) [2023-11-29 01:26:40,186 INFO L175 Difference]: Start difference. First operand has 202 places, 210 transitions, 440 flow. Second operand 3 states and 539 transitions. [2023-11-29 01:26:40,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 192 transitions, 470 flow [2023-11-29 01:26:40,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 192 transitions, 470 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 01:26:40,195 INFO L231 Difference]: Finished difference. Result has 192 places, 192 transitions, 408 flow [2023-11-29 01:26:40,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=408, PETRI_PLACES=192, PETRI_TRANSITIONS=192} [2023-11-29 01:26:40,199 INFO L281 CegarLoopForPetriNet]: 202 programPoint places, -10 predicate places. [2023-11-29 01:26:40,200 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 192 transitions, 408 flow [2023-11-29 01:26:40,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 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) [2023-11-29 01:26:40,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:26:40,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:26:40,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:26:40,201 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2023-11-29 01:26:40,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:26:40,202 INFO L85 PathProgramCache]: Analyzing trace with hash 25438316, now seen corresponding path program 1 times [2023-11-29 01:26:40,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:26:40,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151759285] [2023-11-29 01:26:40,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:40,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:26:40,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:40,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:26:40,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:26:40,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151759285] [2023-11-29 01:26:40,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151759285] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:26:40,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:26:40,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:26:40,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921951753] [2023-11-29 01:26:40,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:26:40,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:26:40,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:26:40,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:26:40,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:26:40,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 210 [2023-11-29 01:26:40,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 192 transitions, 408 flow. Second operand has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:40,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:26:40,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 210 [2023-11-29 01:26:40,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:26:40,495 INFO L124 PetriNetUnfolderBase]: 120/958 cut-off events. [2023-11-29 01:26:40,495 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-11-29 01:26:40,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1286 conditions, 958 events. 120/958 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5240 event pairs, 78 based on Foata normal form. 0/848 useless extension candidates. Maximal degree in co-relation 1257. Up to 243 conditions per place. [2023-11-29 01:26:40,502 INFO L140 encePairwiseOnDemand]: 187/210 looper letters, 31 selfloop transitions, 11 changer transitions 0/182 dead transitions. [2023-11-29 01:26:40,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 182 transitions, 472 flow [2023-11-29 01:26:40,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:26:40,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:26:40,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 498 transitions. [2023-11-29 01:26:40,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7904761904761904 [2023-11-29 01:26:40,505 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 498 transitions. [2023-11-29 01:26:40,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 498 transitions. [2023-11-29 01:26:40,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:26:40,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 498 transitions. [2023-11-29 01:26:40,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 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) [2023-11-29 01:26:40,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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) [2023-11-29 01:26:40,510 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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) [2023-11-29 01:26:40,510 INFO L175 Difference]: Start difference. First operand has 192 places, 192 transitions, 408 flow. Second operand 3 states and 498 transitions. [2023-11-29 01:26:40,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 182 transitions, 472 flow [2023-11-29 01:26:40,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 182 transitions, 468 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 01:26:40,516 INFO L231 Difference]: Finished difference. Result has 180 places, 180 transitions, 402 flow [2023-11-29 01:26:40,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=402, PETRI_PLACES=180, PETRI_TRANSITIONS=180} [2023-11-29 01:26:40,518 INFO L281 CegarLoopForPetriNet]: 202 programPoint places, -22 predicate places. [2023-11-29 01:26:40,518 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 180 transitions, 402 flow [2023-11-29 01:26:40,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:40,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:26:40,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:26:40,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:26:40,519 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2023-11-29 01:26:40,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:26:40,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1641908916, now seen corresponding path program 1 times [2023-11-29 01:26:40,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:26:40,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188808718] [2023-11-29 01:26:40,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:40,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:26:40,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:40,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:26:40,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:26:40,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188808718] [2023-11-29 01:26:40,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188808718] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:26:40,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:26:40,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:26:40,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348201533] [2023-11-29 01:26:40,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:26:40,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:26:40,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:26:40,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:26:40,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:26:40,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 210 [2023-11-29 01:26:40,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 180 transitions, 402 flow. Second operand has 3 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 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) [2023-11-29 01:26:40,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:26:40,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 210 [2023-11-29 01:26:40,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:26:40,740 INFO L124 PetriNetUnfolderBase]: 27/456 cut-off events. [2023-11-29 01:26:40,740 INFO L125 PetriNetUnfolderBase]: For 32/36 co-relation queries the response was YES. [2023-11-29 01:26:40,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 585 conditions, 456 events. 27/456 cut-off events. For 32/36 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1340 event pairs, 10 based on Foata normal form. 6/418 useless extension candidates. Maximal degree in co-relation 392. Up to 39 conditions per place. [2023-11-29 01:26:40,743 INFO L140 encePairwiseOnDemand]: 198/210 looper letters, 17 selfloop transitions, 8 changer transitions 9/185 dead transitions. [2023-11-29 01:26:40,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 185 transitions, 470 flow [2023-11-29 01:26:40,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:26:40,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:26:40,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 567 transitions. [2023-11-29 01:26:40,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9 [2023-11-29 01:26:40,745 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 567 transitions. [2023-11-29 01:26:40,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 567 transitions. [2023-11-29 01:26:40,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:26:40,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 567 transitions. [2023-11-29 01:26:40,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 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) [2023-11-29 01:26:40,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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) [2023-11-29 01:26:40,749 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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) [2023-11-29 01:26:40,750 INFO L175 Difference]: Start difference. First operand has 180 places, 180 transitions, 402 flow. Second operand 3 states and 567 transitions. [2023-11-29 01:26:40,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 185 transitions, 470 flow [2023-11-29 01:26:40,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 185 transitions, 448 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 01:26:40,755 INFO L231 Difference]: Finished difference. Result has 181 places, 172 transitions, 396 flow [2023-11-29 01:26:40,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=396, PETRI_PLACES=181, PETRI_TRANSITIONS=172} [2023-11-29 01:26:40,756 INFO L281 CegarLoopForPetriNet]: 202 programPoint places, -21 predicate places. [2023-11-29 01:26:40,756 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 172 transitions, 396 flow [2023-11-29 01:26:40,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 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) [2023-11-29 01:26:40,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:26:40,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:26:40,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 01:26:40,758 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2023-11-29 01:26:40,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:26:40,758 INFO L85 PathProgramCache]: Analyzing trace with hash -462906055, now seen corresponding path program 1 times [2023-11-29 01:26:40,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:26:40,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756260152] [2023-11-29 01:26:40,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:40,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:26:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:40,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:26:40,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:26:40,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756260152] [2023-11-29 01:26:40,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756260152] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:26:40,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:26:40,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:26:40,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341822668] [2023-11-29 01:26:40,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:26:40,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:26:40,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:26:40,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:26:40,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:26:40,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 210 [2023-11-29 01:26:40,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 172 transitions, 396 flow. Second operand has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 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) [2023-11-29 01:26:40,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:26:40,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 210 [2023-11-29 01:26:40,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:26:41,075 INFO L124 PetriNetUnfolderBase]: 63/640 cut-off events. [2023-11-29 01:26:41,075 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-11-29 01:26:41,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 864 conditions, 640 events. 63/640 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2342 event pairs, 49 based on Foata normal form. 0/582 useless extension candidates. Maximal degree in co-relation 668. Up to 151 conditions per place. [2023-11-29 01:26:41,081 INFO L140 encePairwiseOnDemand]: 207/210 looper letters, 32 selfloop transitions, 2 changer transitions 0/173 dead transitions. [2023-11-29 01:26:41,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 173 transitions, 466 flow [2023-11-29 01:26:41,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:26:41,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:26:41,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 533 transitions. [2023-11-29 01:26:41,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.846031746031746 [2023-11-29 01:26:41,084 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 533 transitions. [2023-11-29 01:26:41,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 533 transitions. [2023-11-29 01:26:41,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:26:41,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 533 transitions. [2023-11-29 01:26:41,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 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) [2023-11-29 01:26:41,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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) [2023-11-29 01:26:41,090 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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) [2023-11-29 01:26:41,090 INFO L175 Difference]: Start difference. First operand has 181 places, 172 transitions, 396 flow. Second operand 3 states and 533 transitions. [2023-11-29 01:26:41,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 173 transitions, 466 flow [2023-11-29 01:26:41,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 173 transitions, 458 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:26:41,096 INFO L231 Difference]: Finished difference. Result has 172 places, 171 transitions, 390 flow [2023-11-29 01:26:41,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=390, PETRI_PLACES=172, PETRI_TRANSITIONS=171} [2023-11-29 01:26:41,097 INFO L281 CegarLoopForPetriNet]: 202 programPoint places, -30 predicate places. [2023-11-29 01:26:41,098 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 171 transitions, 390 flow [2023-11-29 01:26:41,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 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) [2023-11-29 01:26:41,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:26:41,099 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:26:41,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 01:26:41,099 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2023-11-29 01:26:41,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:26:41,100 INFO L85 PathProgramCache]: Analyzing trace with hash -718180608, now seen corresponding path program 1 times [2023-11-29 01:26:41,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:26:41,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104046651] [2023-11-29 01:26:41,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:41,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:26:41,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:41,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:26:41,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:26:41,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104046651] [2023-11-29 01:26:41,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104046651] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:26:41,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395051600] [2023-11-29 01:26:41,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:41,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:26:41,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964fd557-652e-4897-85fe-5aa9d363298f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:26:41,212 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964fd557-652e-4897-85fe-5aa9d363298f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:26:41,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964fd557-652e-4897-85fe-5aa9d363298f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:26:41,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:41,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:26:41,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:26:41,331 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:26:41,332 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:26:41,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395051600] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:26:41,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:26:41,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-29 01:26:41,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601222239] [2023-11-29 01:26:41,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:26:41,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:26:41,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:26:41,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:26:41,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:26:41,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 210 [2023-11-29 01:26:41,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 171 transitions, 390 flow. Second operand has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 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) [2023-11-29 01:26:41,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:26:41,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 210 [2023-11-29 01:26:41,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:26:41,526 INFO L124 PetriNetUnfolderBase]: 63/617 cut-off events. [2023-11-29 01:26:41,527 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-11-29 01:26:41,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 832 conditions, 617 events. 63/617 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2243 event pairs, 49 based on Foata normal form. 0/557 useless extension candidates. Maximal degree in co-relation 750. Up to 151 conditions per place. [2023-11-29 01:26:41,532 INFO L140 encePairwiseOnDemand]: 207/210 looper letters, 32 selfloop transitions, 2 changer transitions 0/172 dead transitions. [2023-11-29 01:26:41,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 172 transitions, 460 flow [2023-11-29 01:26:41,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:26:41,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:26:41,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 533 transitions. [2023-11-29 01:26:41,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.846031746031746 [2023-11-29 01:26:41,534 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 533 transitions. [2023-11-29 01:26:41,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 533 transitions. [2023-11-29 01:26:41,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:26:41,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 533 transitions. [2023-11-29 01:26:41,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 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) [2023-11-29 01:26:41,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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) [2023-11-29 01:26:41,540 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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) [2023-11-29 01:26:41,540 INFO L175 Difference]: Start difference. First operand has 172 places, 171 transitions, 390 flow. Second operand 3 states and 533 transitions. [2023-11-29 01:26:41,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 172 transitions, 460 flow [2023-11-29 01:26:41,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 172 transitions, 456 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 01:26:41,545 INFO L231 Difference]: Finished difference. Result has 171 places, 170 transitions, 388 flow [2023-11-29 01:26:41,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=388, PETRI_PLACES=171, PETRI_TRANSITIONS=170} [2023-11-29 01:26:41,546 INFO L281 CegarLoopForPetriNet]: 202 programPoint places, -31 predicate places. [2023-11-29 01:26:41,546 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 170 transitions, 388 flow [2023-11-29 01:26:41,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 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) [2023-11-29 01:26:41,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:26:41,547 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:26:41,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964fd557-652e-4897-85fe-5aa9d363298f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:26:41,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964fd557-652e-4897-85fe-5aa9d363298f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:26:41,753 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2023-11-29 01:26:41,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:26:41,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1791793090, now seen corresponding path program 1 times [2023-11-29 01:26:41,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:26:41,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316000485] [2023-11-29 01:26:41,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:41,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:26:41,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:26:41,773 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 01:26:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:26:41,806 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 01:26:41,806 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 01:26:41,807 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 36 remaining) [2023-11-29 01:26:41,809 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr0ASSERT_VIOLATIONDATA_RACE (34 of 36 remaining) [2023-11-29 01:26:41,809 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr1ASSERT_VIOLATIONDATA_RACE (33 of 36 remaining) [2023-11-29 01:26:41,810 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONDATA_RACE (32 of 36 remaining) [2023-11-29 01:26:41,810 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr1ASSERT_VIOLATIONDATA_RACE (31 of 36 remaining) [2023-11-29 01:26:41,810 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr2ASSERT_VIOLATIONDATA_RACE (30 of 36 remaining) [2023-11-29 01:26:41,810 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr3ASSERT_VIOLATIONDATA_RACE (29 of 36 remaining) [2023-11-29 01:26:41,810 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (28 of 36 remaining) [2023-11-29 01:26:41,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (27 of 36 remaining) [2023-11-29 01:26:41,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (26 of 36 remaining) [2023-11-29 01:26:41,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (25 of 36 remaining) [2023-11-29 01:26:41,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (24 of 36 remaining) [2023-11-29 01:26:41,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (23 of 36 remaining) [2023-11-29 01:26:41,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (22 of 36 remaining) [2023-11-29 01:26:41,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (21 of 36 remaining) [2023-11-29 01:26:41,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (20 of 36 remaining) [2023-11-29 01:26:41,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONDATA_RACE (19 of 36 remaining) [2023-11-29 01:26:41,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE (18 of 36 remaining) [2023-11-29 01:26:41,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (17 of 36 remaining) [2023-11-29 01:26:41,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (16 of 36 remaining) [2023-11-29 01:26:41,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONDATA_RACE (15 of 36 remaining) [2023-11-29 01:26:41,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONDATA_RACE (14 of 36 remaining) [2023-11-29 01:26:41,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONDATA_RACE (13 of 36 remaining) [2023-11-29 01:26:41,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (12 of 36 remaining) [2023-11-29 01:26:41,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONDATA_RACE (11 of 36 remaining) [2023-11-29 01:26:41,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONDATA_RACE (10 of 36 remaining) [2023-11-29 01:26:41,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONDATA_RACE (9 of 36 remaining) [2023-11-29 01:26:41,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONDATA_RACE (8 of 36 remaining) [2023-11-29 01:26:41,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONDATA_RACE (7 of 36 remaining) [2023-11-29 01:26:41,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 36 remaining) [2023-11-29 01:26:41,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr0ASSERT_VIOLATIONDATA_RACE (5 of 36 remaining) [2023-11-29 01:26:41,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr1ASSERT_VIOLATIONDATA_RACE (4 of 36 remaining) [2023-11-29 01:26:41,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONDATA_RACE (3 of 36 remaining) [2023-11-29 01:26:41,816 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr1ASSERT_VIOLATIONDATA_RACE (2 of 36 remaining) [2023-11-29 01:26:41,816 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr2ASSERT_VIOLATIONDATA_RACE (1 of 36 remaining) [2023-11-29 01:26:41,816 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr3ASSERT_VIOLATIONDATA_RACE (0 of 36 remaining) [2023-11-29 01:26:41,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 01:26:41,817 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-29 01:26:41,819 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 01:26:41,819 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-29 01:26:41,869 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-11-29 01:26:41,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 251 places, 264 transitions, 572 flow [2023-11-29 01:26:42,151 INFO L124 PetriNetUnfolderBase]: 131/1774 cut-off events. [2023-11-29 01:26:42,151 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-29 01:26:42,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1863 conditions, 1774 events. 131/1774 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 10655 event pairs, 2 based on Foata normal form. 0/1403 useless extension candidates. Maximal degree in co-relation 998. Up to 32 conditions per place. [2023-11-29 01:26:42,163 INFO L82 GeneralOperation]: Start removeDead. Operand has 251 places, 264 transitions, 572 flow [2023-11-29 01:26:42,182 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 251 places, 264 transitions, 572 flow [2023-11-29 01:26:42,183 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:26:42,184 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;@6b8ef0b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:26:42,184 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2023-11-29 01:26:42,186 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:26:42,186 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-11-29 01:26:42,186 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:26:42,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:26:42,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:26:42,187 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-11-29 01:26:42,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:26:42,187 INFO L85 PathProgramCache]: Analyzing trace with hash 717121017, now seen corresponding path program 1 times [2023-11-29 01:26:42,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:26:42,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731024551] [2023-11-29 01:26:42,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:42,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:26:42,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:42,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:26:42,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:26:42,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731024551] [2023-11-29 01:26:42,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731024551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:26:42,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:26:42,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:26:42,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288357118] [2023-11-29 01:26:42,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:26:42,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:26:42,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:26:42,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:26:42,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:26:42,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 264 [2023-11-29 01:26:42,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 264 transitions, 572 flow. Second operand has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 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) [2023-11-29 01:26:42,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:26:42,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 264 [2023-11-29 01:26:42,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:26:43,172 INFO L124 PetriNetUnfolderBase]: 1117/4255 cut-off events. [2023-11-29 01:26:43,172 INFO L125 PetriNetUnfolderBase]: For 714/922 co-relation queries the response was YES. [2023-11-29 01:26:43,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6594 conditions, 4255 events. 1117/4255 cut-off events. For 714/922 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 33544 event pairs, 985 based on Foata normal form. 854/4383 useless extension candidates. Maximal degree in co-relation 4555. Up to 2064 conditions per place. [2023-11-29 01:26:43,218 INFO L140 encePairwiseOnDemand]: 251/264 looper letters, 39 selfloop transitions, 2 changer transitions 0/233 dead transitions. [2023-11-29 01:26:43,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 233 transitions, 592 flow [2023-11-29 01:26:43,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:26:43,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:26:43,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 670 transitions. [2023-11-29 01:26:43,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8459595959595959 [2023-11-29 01:26:43,221 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 670 transitions. [2023-11-29 01:26:43,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 670 transitions. [2023-11-29 01:26:43,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:26:43,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 670 transitions. [2023-11-29 01:26:43,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 223.33333333333334) internal successors, (670), 3 states have internal predecessors, (670), 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) [2023-11-29 01:26:43,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 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) [2023-11-29 01:26:43,226 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 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) [2023-11-29 01:26:43,226 INFO L175 Difference]: Start difference. First operand has 251 places, 264 transitions, 572 flow. Second operand 3 states and 670 transitions. [2023-11-29 01:26:43,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 233 transitions, 592 flow [2023-11-29 01:26:43,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 233 transitions, 592 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 01:26:43,231 INFO L231 Difference]: Finished difference. Result has 230 places, 233 transitions, 514 flow [2023-11-29 01:26:43,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=514, PETRI_PLACES=230, PETRI_TRANSITIONS=233} [2023-11-29 01:26:43,232 INFO L281 CegarLoopForPetriNet]: 251 programPoint places, -21 predicate places. [2023-11-29 01:26:43,232 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 233 transitions, 514 flow [2023-11-29 01:26:43,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 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) [2023-11-29 01:26:43,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:26:43,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:26:43,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 01:26:43,234 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-11-29 01:26:43,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:26:43,234 INFO L85 PathProgramCache]: Analyzing trace with hash 585570610, now seen corresponding path program 1 times [2023-11-29 01:26:43,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:26:43,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667406242] [2023-11-29 01:26:43,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:43,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:26:43,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:43,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:26:43,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:26:43,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667406242] [2023-11-29 01:26:43,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667406242] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:26:43,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:26:43,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:26:43,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925600207] [2023-11-29 01:26:43,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:26:43,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:26:43,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:26:43,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:26:43,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:26:43,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 264 [2023-11-29 01:26:43,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 233 transitions, 514 flow. Second operand has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 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) [2023-11-29 01:26:43,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:26:43,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 264 [2023-11-29 01:26:43,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:26:44,591 INFO L124 PetriNetUnfolderBase]: 1641/6703 cut-off events. [2023-11-29 01:26:44,592 INFO L125 PetriNetUnfolderBase]: For 649/685 co-relation queries the response was YES. [2023-11-29 01:26:44,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9923 conditions, 6703 events. 1641/6703 cut-off events. For 649/685 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 54658 event pairs, 1169 based on Foata normal form. 0/6038 useless extension candidates. Maximal degree in co-relation 9892. Up to 2412 conditions per place. [2023-11-29 01:26:44,684 INFO L140 encePairwiseOnDemand]: 241/264 looper letters, 41 selfloop transitions, 11 changer transitions 0/225 dead transitions. [2023-11-29 01:26:44,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 225 transitions, 602 flow [2023-11-29 01:26:44,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:26:44,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:26:44,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 628 transitions. [2023-11-29 01:26:44,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7929292929292929 [2023-11-29 01:26:44,687 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 628 transitions. [2023-11-29 01:26:44,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 628 transitions. [2023-11-29 01:26:44,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:26:44,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 628 transitions. [2023-11-29 01:26:44,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 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) [2023-11-29 01:26:44,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 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) [2023-11-29 01:26:44,691 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 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) [2023-11-29 01:26:44,691 INFO L175 Difference]: Start difference. First operand has 230 places, 233 transitions, 514 flow. Second operand 3 states and 628 transitions. [2023-11-29 01:26:44,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 225 transitions, 602 flow [2023-11-29 01:26:44,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 225 transitions, 598 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 01:26:44,696 INFO L231 Difference]: Finished difference. Result has 218 places, 221 transitions, 508 flow [2023-11-29 01:26:44,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=508, PETRI_PLACES=218, PETRI_TRANSITIONS=221} [2023-11-29 01:26:44,697 INFO L281 CegarLoopForPetriNet]: 251 programPoint places, -33 predicate places. [2023-11-29 01:26:44,697 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 221 transitions, 508 flow [2023-11-29 01:26:44,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 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) [2023-11-29 01:26:44,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:26:44,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:26:44,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 01:26:44,698 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-11-29 01:26:44,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:26:44,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1181268684, now seen corresponding path program 1 times [2023-11-29 01:26:44,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:26:44,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866541963] [2023-11-29 01:26:44,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:44,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:26:44,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:44,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:26:44,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:26:44,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866541963] [2023-11-29 01:26:44,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866541963] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:26:44,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:26:44,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:26:44,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622269363] [2023-11-29 01:26:44,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:26:44,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:26:44,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:26:44,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:26:44,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:26:44,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 264 [2023-11-29 01:26:44,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 221 transitions, 508 flow. Second operand has 3 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 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) [2023-11-29 01:26:44,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:26:44,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 264 [2023-11-29 01:26:44,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:26:45,580 INFO L124 PetriNetUnfolderBase]: 630/4696 cut-off events. [2023-11-29 01:26:45,580 INFO L125 PetriNetUnfolderBase]: For 775/817 co-relation queries the response was YES. [2023-11-29 01:26:45,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6378 conditions, 4696 events. 630/4696 cut-off events. For 775/817 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 39483 event pairs, 228 based on Foata normal form. 42/4254 useless extension candidates. Maximal degree in co-relation 4109. Up to 682 conditions per place. [2023-11-29 01:26:45,613 INFO L140 encePairwiseOnDemand]: 252/264 looper letters, 37 selfloop transitions, 8 changer transitions 0/237 dead transitions. [2023-11-29 01:26:45,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 237 transitions, 654 flow [2023-11-29 01:26:45,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:26:45,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:26:45,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 706 transitions. [2023-11-29 01:26:45,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8914141414141414 [2023-11-29 01:26:45,616 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 706 transitions. [2023-11-29 01:26:45,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 706 transitions. [2023-11-29 01:26:45,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:26:45,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 706 transitions. [2023-11-29 01:26:45,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.33333333333334) internal successors, (706), 3 states have internal predecessors, (706), 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) [2023-11-29 01:26:45,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 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) [2023-11-29 01:26:45,621 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 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) [2023-11-29 01:26:45,621 INFO L175 Difference]: Start difference. First operand has 218 places, 221 transitions, 508 flow. Second operand 3 states and 706 transitions. [2023-11-29 01:26:45,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 237 transitions, 654 flow [2023-11-29 01:26:45,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 237 transitions, 632 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 01:26:45,627 INFO L231 Difference]: Finished difference. Result has 219 places, 225 transitions, 534 flow [2023-11-29 01:26:45,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=534, PETRI_PLACES=219, PETRI_TRANSITIONS=225} [2023-11-29 01:26:45,628 INFO L281 CegarLoopForPetriNet]: 251 programPoint places, -32 predicate places. [2023-11-29 01:26:45,628 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 225 transitions, 534 flow [2023-11-29 01:26:45,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 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) [2023-11-29 01:26:45,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:26:45,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:26:45,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 01:26:45,629 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-11-29 01:26:45,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:26:45,630 INFO L85 PathProgramCache]: Analyzing trace with hash -853393969, now seen corresponding path program 1 times [2023-11-29 01:26:45,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:26:45,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272081261] [2023-11-29 01:26:45,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:45,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:26:45,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:45,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:26:45,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:26:45,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272081261] [2023-11-29 01:26:45,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272081261] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:26:45,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:26:45,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:26:45,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507319693] [2023-11-29 01:26:45,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:26:45,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:26:45,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:26:45,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:26:45,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:26:45,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 264 [2023-11-29 01:26:45,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 225 transitions, 534 flow. Second operand has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 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) [2023-11-29 01:26:45,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:26:45,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 264 [2023-11-29 01:26:45,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:26:46,601 INFO L124 PetriNetUnfolderBase]: 1140/5094 cut-off events. [2023-11-29 01:26:46,601 INFO L125 PetriNetUnfolderBase]: For 734/810 co-relation queries the response was YES. [2023-11-29 01:26:46,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7746 conditions, 5094 events. 1140/5094 cut-off events. For 734/810 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 40298 event pairs, 990 based on Foata normal form. 0/4479 useless extension candidates. Maximal degree in co-relation 3467. Up to 2049 conditions per place. [2023-11-29 01:26:46,642 INFO L140 encePairwiseOnDemand]: 261/264 looper letters, 43 selfloop transitions, 2 changer transitions 0/228 dead transitions. [2023-11-29 01:26:46,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 228 transitions, 630 flow [2023-11-29 01:26:46,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:26:46,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:26:46,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 664 transitions. [2023-11-29 01:26:46,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8383838383838383 [2023-11-29 01:26:46,645 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 664 transitions. [2023-11-29 01:26:46,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 664 transitions. [2023-11-29 01:26:46,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:26:46,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 664 transitions. [2023-11-29 01:26:46,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 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) [2023-11-29 01:26:46,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 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) [2023-11-29 01:26:46,649 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 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) [2023-11-29 01:26:46,649 INFO L175 Difference]: Start difference. First operand has 219 places, 225 transitions, 534 flow. Second operand 3 states and 664 transitions. [2023-11-29 01:26:46,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 228 transitions, 630 flow [2023-11-29 01:26:46,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 228 transitions, 622 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:26:46,654 INFO L231 Difference]: Finished difference. Result has 219 places, 224 transitions, 528 flow [2023-11-29 01:26:46,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=528, PETRI_PLACES=219, PETRI_TRANSITIONS=224} [2023-11-29 01:26:46,655 INFO L281 CegarLoopForPetriNet]: 251 programPoint places, -32 predicate places. [2023-11-29 01:26:46,655 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 224 transitions, 528 flow [2023-11-29 01:26:46,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 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) [2023-11-29 01:26:46,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:26:46,656 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:26:46,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 01:26:46,656 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-11-29 01:26:46,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:26:46,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1234234064, now seen corresponding path program 1 times [2023-11-29 01:26:46,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:26:46,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022318583] [2023-11-29 01:26:46,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:46,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:26:46,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:46,733 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:26:46,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:26:46,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022318583] [2023-11-29 01:26:46,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022318583] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:26:46,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493054956] [2023-11-29 01:26:46,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:46,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:26:46,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964fd557-652e-4897-85fe-5aa9d363298f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:26:46,735 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964fd557-652e-4897-85fe-5aa9d363298f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:26:46,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964fd557-652e-4897-85fe-5aa9d363298f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:26:46,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:46,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:26:46,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:26:46,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:26:46,832 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:26:46,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493054956] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:26:46,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:26:46,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-29 01:26:46,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415846464] [2023-11-29 01:26:46,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:26:46,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:26:46,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:26:46,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:26:46,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:26:46,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 264 [2023-11-29 01:26:46,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 224 transitions, 528 flow. Second operand has 3 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 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) [2023-11-29 01:26:46,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:26:46,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 264 [2023-11-29 01:26:46,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:26:47,665 INFO L124 PetriNetUnfolderBase]: 1140/5040 cut-off events. [2023-11-29 01:26:47,666 INFO L125 PetriNetUnfolderBase]: For 743/819 co-relation queries the response was YES. [2023-11-29 01:26:47,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7645 conditions, 5040 events. 1140/5040 cut-off events. For 743/819 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 39960 event pairs, 990 based on Foata normal form. 0/4426 useless extension candidates. Maximal degree in co-relation 5984. Up to 2049 conditions per place. [2023-11-29 01:26:47,703 INFO L140 encePairwiseOnDemand]: 261/264 looper letters, 43 selfloop transitions, 2 changer transitions 0/227 dead transitions. [2023-11-29 01:26:47,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 227 transitions, 624 flow [2023-11-29 01:26:47,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:26:47,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:26:47,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 664 transitions. [2023-11-29 01:26:47,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8383838383838383 [2023-11-29 01:26:47,706 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 664 transitions. [2023-11-29 01:26:47,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 664 transitions. [2023-11-29 01:26:47,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:26:47,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 664 transitions. [2023-11-29 01:26:47,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 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) [2023-11-29 01:26:47,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 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) [2023-11-29 01:26:47,711 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 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) [2023-11-29 01:26:47,712 INFO L175 Difference]: Start difference. First operand has 219 places, 224 transitions, 528 flow. Second operand 3 states and 664 transitions. [2023-11-29 01:26:47,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 227 transitions, 624 flow [2023-11-29 01:26:47,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 227 transitions, 620 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 01:26:47,720 INFO L231 Difference]: Finished difference. Result has 218 places, 223 transitions, 526 flow [2023-11-29 01:26:47,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=526, PETRI_PLACES=218, PETRI_TRANSITIONS=223} [2023-11-29 01:26:47,721 INFO L281 CegarLoopForPetriNet]: 251 programPoint places, -33 predicate places. [2023-11-29 01:26:47,721 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 223 transitions, 526 flow [2023-11-29 01:26:47,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 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) [2023-11-29 01:26:47,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:26:47,722 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:26:47,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964fd557-652e-4897-85fe-5aa9d363298f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:26:47,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964fd557-652e-4897-85fe-5aa9d363298f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 01:26:47,923 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting checkThreadErr0ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-11-29 01:26:47,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:26:47,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1706015966, now seen corresponding path program 1 times [2023-11-29 01:26:47,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:26:47,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105513163] [2023-11-29 01:26:47,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:47,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:26:47,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:48,014 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:26:48,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:26:48,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105513163] [2023-11-29 01:26:48,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105513163] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:26:48,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603827457] [2023-11-29 01:26:48,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:48,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:26:48,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964fd557-652e-4897-85fe-5aa9d363298f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:26:48,016 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964fd557-652e-4897-85fe-5aa9d363298f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:26:48,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964fd557-652e-4897-85fe-5aa9d363298f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:26:48,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:48,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:26:48,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:26:48,123 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:26:48,123 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:26:48,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603827457] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:26:48,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:26:48,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-29 01:26:48,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147284604] [2023-11-29 01:26:48,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:26:48,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:26:48,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:26:48,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:26:48,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:26:48,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 264 [2023-11-29 01:26:48,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 223 transitions, 526 flow. Second operand has 3 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 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) [2023-11-29 01:26:48,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:26:48,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 264 [2023-11-29 01:26:48,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:26:53,524 INFO L124 PetriNetUnfolderBase]: 6387/38935 cut-off events. [2023-11-29 01:26:53,525 INFO L125 PetriNetUnfolderBase]: For 11820/88579 co-relation queries the response was YES. [2023-11-29 01:26:53,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51872 conditions, 38935 events. 6387/38935 cut-off events. For 11820/88579 co-relation queries the response was YES. Maximal size of possible extension queue 941. Compared 550732 event pairs, 1961 based on Foata normal form. 69/33016 useless extension candidates. Maximal degree in co-relation 44361. Up to 4468 conditions per place. [2023-11-29 01:26:53,756 INFO L140 encePairwiseOnDemand]: 250/264 looper letters, 39 selfloop transitions, 10 changer transitions 0/244 dead transitions. [2023-11-29 01:26:53,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 244 transitions, 695 flow [2023-11-29 01:26:53,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:26:53,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:26:53,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 713 transitions. [2023-11-29 01:26:53,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9002525252525253 [2023-11-29 01:26:53,758 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 713 transitions. [2023-11-29 01:26:53,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 713 transitions. [2023-11-29 01:26:53,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:26:53,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 713 transitions. [2023-11-29 01:26:53,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 237.66666666666666) internal successors, (713), 3 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:53,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 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) [2023-11-29 01:26:53,762 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 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) [2023-11-29 01:26:53,762 INFO L175 Difference]: Start difference. First operand has 218 places, 223 transitions, 526 flow. Second operand 3 states and 713 transitions. [2023-11-29 01:26:53,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 244 transitions, 695 flow [2023-11-29 01:26:53,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 244 transitions, 691 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 01:26:53,788 INFO L231 Difference]: Finished difference. Result has 220 places, 233 transitions, 610 flow [2023-11-29 01:26:53,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=610, PETRI_PLACES=220, PETRI_TRANSITIONS=233} [2023-11-29 01:26:53,789 INFO L281 CegarLoopForPetriNet]: 251 programPoint places, -31 predicate places. [2023-11-29 01:26:53,789 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 233 transitions, 610 flow [2023-11-29 01:26:53,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 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) [2023-11-29 01:26:53,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:26:53,790 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:26:53,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964fd557-652e-4897-85fe-5aa9d363298f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 01:26:53,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964fd557-652e-4897-85fe-5aa9d363298f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 01:26:53,991 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting checkThreadErr0ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-11-29 01:26:53,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:26:53,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1196155012, now seen corresponding path program 1 times [2023-11-29 01:26:53,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:26:53,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902747581] [2023-11-29 01:26:53,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:53,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:26:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:54,071 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:26:54,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:26:54,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902747581] [2023-11-29 01:26:54,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902747581] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:26:54,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690204753] [2023-11-29 01:26:54,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:54,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:26:54,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964fd557-652e-4897-85fe-5aa9d363298f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:26:54,074 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964fd557-652e-4897-85fe-5aa9d363298f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:26:54,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964fd557-652e-4897-85fe-5aa9d363298f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:26:54,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:54,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:26:54,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:26:54,247 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:26:54,247 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:26:54,308 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:26:54,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690204753] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:26:54,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:26:54,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-29 01:26:54,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102527856] [2023-11-29 01:26:54,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:26:54,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:26:54,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:26:54,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:26:54,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:26:54,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 264 [2023-11-29 01:26:54,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 233 transitions, 610 flow. Second operand has 10 states, 10 states have (on average 213.5) internal successors, (2135), 10 states have internal predecessors, (2135), 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) [2023-11-29 01:26:54,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:26:54,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 264 [2023-11-29 01:26:54,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:26:54,638 INFO L124 PetriNetUnfolderBase]: 62/320 cut-off events. [2023-11-29 01:26:54,638 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2023-11-29 01:26:54,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 514 conditions, 320 events. 62/320 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1134 event pairs, 0 based on Foata normal form. 12/324 useless extension candidates. Maximal degree in co-relation 505. Up to 42 conditions per place. [2023-11-29 01:26:54,639 INFO L140 encePairwiseOnDemand]: 259/264 looper letters, 29 selfloop transitions, 7 changer transitions 0/76 dead transitions. [2023-11-29 01:26:54,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 76 transitions, 262 flow [2023-11-29 01:26:54,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:26:54,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 01:26:54,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1937 transitions. [2023-11-29 01:26:54,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8152356902356902 [2023-11-29 01:26:54,644 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1937 transitions. [2023-11-29 01:26:54,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1937 transitions. [2023-11-29 01:26:54,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:26:54,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1937 transitions. [2023-11-29 01:26:54,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 215.22222222222223) internal successors, (1937), 9 states have internal predecessors, (1937), 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) [2023-11-29 01:26:54,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 264.0) internal successors, (2640), 10 states have internal predecessors, (2640), 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) [2023-11-29 01:26:54,656 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 264.0) internal successors, (2640), 10 states have internal predecessors, (2640), 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) [2023-11-29 01:26:54,657 INFO L175 Difference]: Start difference. First operand has 220 places, 233 transitions, 610 flow. Second operand 9 states and 1937 transitions. [2023-11-29 01:26:54,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 76 transitions, 262 flow [2023-11-29 01:26:54,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 76 transitions, 262 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 01:26:54,659 INFO L231 Difference]: Finished difference. Result has 72 places, 56 transitions, 146 flow [2023-11-29 01:26:54,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=146, PETRI_PLACES=72, PETRI_TRANSITIONS=56} [2023-11-29 01:26:54,660 INFO L281 CegarLoopForPetriNet]: 251 programPoint places, -179 predicate places. [2023-11-29 01:26:54,660 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 56 transitions, 146 flow [2023-11-29 01:26:54,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 213.5) internal successors, (2135), 10 states have internal predecessors, (2135), 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) [2023-11-29 01:26:54,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:26:54,662 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:26:54,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964fd557-652e-4897-85fe-5aa9d363298f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 01:26:54,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964fd557-652e-4897-85fe-5aa9d363298f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 01:26:54,864 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-11-29 01:26:54,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:26:54,865 INFO L85 PathProgramCache]: Analyzing trace with hash -718802081, now seen corresponding path program 1 times [2023-11-29 01:26:54,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:26:54,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267246198] [2023-11-29 01:26:54,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:54,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:26:54,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:26:54,883 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 01:26:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:26:54,906 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 01:26:54,906 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 01:26:54,906 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (41 of 42 remaining) [2023-11-29 01:26:54,907 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr0ASSERT_VIOLATIONDATA_RACE (40 of 42 remaining) [2023-11-29 01:26:54,907 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr1ASSERT_VIOLATIONDATA_RACE (39 of 42 remaining) [2023-11-29 01:26:54,907 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONDATA_RACE (38 of 42 remaining) [2023-11-29 01:26:54,907 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr1ASSERT_VIOLATIONDATA_RACE (37 of 42 remaining) [2023-11-29 01:26:54,907 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr2ASSERT_VIOLATIONDATA_RACE (36 of 42 remaining) [2023-11-29 01:26:54,907 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr3ASSERT_VIOLATIONDATA_RACE (35 of 42 remaining) [2023-11-29 01:26:54,907 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (34 of 42 remaining) [2023-11-29 01:26:54,908 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (33 of 42 remaining) [2023-11-29 01:26:54,908 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (32 of 42 remaining) [2023-11-29 01:26:54,908 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (31 of 42 remaining) [2023-11-29 01:26:54,908 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (30 of 42 remaining) [2023-11-29 01:26:54,908 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (29 of 42 remaining) [2023-11-29 01:26:54,908 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (28 of 42 remaining) [2023-11-29 01:26:54,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (27 of 42 remaining) [2023-11-29 01:26:54,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (26 of 42 remaining) [2023-11-29 01:26:54,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONDATA_RACE (25 of 42 remaining) [2023-11-29 01:26:54,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE (24 of 42 remaining) [2023-11-29 01:26:54,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (23 of 42 remaining) [2023-11-29 01:26:54,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (22 of 42 remaining) [2023-11-29 01:26:54,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONDATA_RACE (21 of 42 remaining) [2023-11-29 01:26:54,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONDATA_RACE (20 of 42 remaining) [2023-11-29 01:26:54,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONDATA_RACE (19 of 42 remaining) [2023-11-29 01:26:54,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (18 of 42 remaining) [2023-11-29 01:26:54,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONDATA_RACE (17 of 42 remaining) [2023-11-29 01:26:54,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONDATA_RACE (16 of 42 remaining) [2023-11-29 01:26:54,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONDATA_RACE (15 of 42 remaining) [2023-11-29 01:26:54,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONDATA_RACE (14 of 42 remaining) [2023-11-29 01:26:54,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONDATA_RACE (13 of 42 remaining) [2023-11-29 01:26:54,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 42 remaining) [2023-11-29 01:26:54,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr0ASSERT_VIOLATIONDATA_RACE (11 of 42 remaining) [2023-11-29 01:26:54,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr1ASSERT_VIOLATIONDATA_RACE (10 of 42 remaining) [2023-11-29 01:26:54,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr0ASSERT_VIOLATIONDATA_RACE (9 of 42 remaining) [2023-11-29 01:26:54,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr1ASSERT_VIOLATIONDATA_RACE (8 of 42 remaining) [2023-11-29 01:26:54,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONDATA_RACE (7 of 42 remaining) [2023-11-29 01:26:54,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr1ASSERT_VIOLATIONDATA_RACE (6 of 42 remaining) [2023-11-29 01:26:54,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr2ASSERT_VIOLATIONDATA_RACE (5 of 42 remaining) [2023-11-29 01:26:54,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr3ASSERT_VIOLATIONDATA_RACE (4 of 42 remaining) [2023-11-29 01:26:54,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONDATA_RACE (3 of 42 remaining) [2023-11-29 01:26:54,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr1ASSERT_VIOLATIONDATA_RACE (2 of 42 remaining) [2023-11-29 01:26:54,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr2ASSERT_VIOLATIONDATA_RACE (1 of 42 remaining) [2023-11-29 01:26:54,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr3ASSERT_VIOLATIONDATA_RACE (0 of 42 remaining) [2023-11-29 01:26:54,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 01:26:54,912 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:26:54,913 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 01:26:54,913 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-29 01:26:54,955 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-11-29 01:26:54,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 300 places, 318 transitions, 708 flow [2023-11-29 01:26:55,887 INFO L124 PetriNetUnfolderBase]: 544/5950 cut-off events. [2023-11-29 01:26:55,887 INFO L125 PetriNetUnfolderBase]: For 419/419 co-relation queries the response was YES. [2023-11-29 01:26:55,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6386 conditions, 5950 events. 544/5950 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 48224 event pairs, 64 based on Foata normal form. 0/4749 useless extension candidates. Maximal degree in co-relation 3394. Up to 192 conditions per place. [2023-11-29 01:26:55,940 INFO L82 GeneralOperation]: Start removeDead. Operand has 300 places, 318 transitions, 708 flow [2023-11-29 01:26:55,998 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 300 places, 318 transitions, 708 flow [2023-11-29 01:26:55,999 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:26:55,999 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;@6b8ef0b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:26:56,000 INFO L358 AbstractCegarLoop]: Starting to check reachability of 48 error locations. [2023-11-29 01:26:56,001 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:26:56,001 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-11-29 01:26:56,002 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:26:56,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:26:56,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:26:56,002 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2023-11-29 01:26:56,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:26:56,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1225363705, now seen corresponding path program 1 times [2023-11-29 01:26:56,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:26:56,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578405670] [2023-11-29 01:26:56,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:56,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:26:56,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:56,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:26:56,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:26:56,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578405670] [2023-11-29 01:26:56,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578405670] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:26:56,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:26:56,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:26:56,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893889341] [2023-11-29 01:26:56,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:26:56,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:26:56,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:26:56,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:26:56,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:26:56,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 318 [2023-11-29 01:26:56,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 318 transitions, 708 flow. Second operand has 3 states, 3 states have (on average 247.33333333333334) internal successors, (742), 3 states have internal predecessors, (742), 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) [2023-11-29 01:26:56,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:26:56,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 318 [2023-11-29 01:26:56,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:27:02,152 INFO L124 PetriNetUnfolderBase]: 12246/31199 cut-off events. [2023-11-29 01:27:02,152 INFO L125 PetriNetUnfolderBase]: For 8911/11311 co-relation queries the response was YES. [2023-11-29 01:27:02,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53098 conditions, 31199 events. 12246/31199 cut-off events. For 8911/11311 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 308516 event pairs, 10886 based on Foata normal form. 10015/36820 useless extension candidates. Maximal degree in co-relation 38905. Up to 19179 conditions per place. [2023-11-29 01:27:02,592 INFO L140 encePairwiseOnDemand]: 302/318 looper letters, 47 selfloop transitions, 2 changer transitions 0/274 dead transitions. [2023-11-29 01:27:02,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 274 transitions, 718 flow [2023-11-29 01:27:02,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:27:02,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:27:02,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 801 transitions. [2023-11-29 01:27:02,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.839622641509434 [2023-11-29 01:27:02,595 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 801 transitions. [2023-11-29 01:27:02,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 801 transitions. [2023-11-29 01:27:02,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:27:02,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 801 transitions. [2023-11-29 01:27:02,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 267.0) internal successors, (801), 3 states have internal predecessors, (801), 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) [2023-11-29 01:27:02,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 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) [2023-11-29 01:27:02,601 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 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) [2023-11-29 01:27:02,601 INFO L175 Difference]: Start difference. First operand has 300 places, 318 transitions, 708 flow. Second operand 3 states and 801 transitions. [2023-11-29 01:27:02,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 274 transitions, 718 flow [2023-11-29 01:27:02,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 274 transitions, 718 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 01:27:02,682 INFO L231 Difference]: Finished difference. Result has 268 places, 274 transitions, 624 flow [2023-11-29 01:27:02,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=624, PETRI_PLACES=268, PETRI_TRANSITIONS=274} [2023-11-29 01:27:02,683 INFO L281 CegarLoopForPetriNet]: 300 programPoint places, -32 predicate places. [2023-11-29 01:27:02,683 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 274 transitions, 624 flow [2023-11-29 01:27:02,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 247.33333333333334) internal successors, (742), 3 states have internal predecessors, (742), 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) [2023-11-29 01:27:02,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:27:02,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:27:02,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 01:27:02,684 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2023-11-29 01:27:02,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:27:02,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1884084206, now seen corresponding path program 1 times [2023-11-29 01:27:02,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:27:02,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177436845] [2023-11-29 01:27:02,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:02,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:27:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:02,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:27:02,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:27:02,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177436845] [2023-11-29 01:27:02,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177436845] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:27:02,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:27:02,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:27:02,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861389447] [2023-11-29 01:27:02,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:27:02,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:27:02,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:27:02,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:27:02,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:27:02,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 318 [2023-11-29 01:27:02,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 274 transitions, 624 flow. Second operand has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 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) [2023-11-29 01:27:02,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:27:02,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 318 [2023-11-29 01:27:02,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:27:12,852 INFO L124 PetriNetUnfolderBase]: 17428/52216 cut-off events. [2023-11-29 01:27:12,852 INFO L125 PetriNetUnfolderBase]: For 7596/7968 co-relation queries the response was YES. [2023-11-29 01:27:13,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81783 conditions, 52216 events. 17428/52216 cut-off events. For 7596/7968 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 561466 event pairs, 12762 based on Foata normal form. 0/47931 useless extension candidates. Maximal degree in co-relation 81750. Up to 22195 conditions per place. [2023-11-29 01:27:13,777 INFO L140 encePairwiseOnDemand]: 295/318 looper letters, 51 selfloop transitions, 11 changer transitions 0/268 dead transitions. [2023-11-29 01:27:13,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 268 transitions, 736 flow [2023-11-29 01:27:13,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:27:13,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:27:13,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 758 transitions. [2023-11-29 01:27:13,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7945492662473794 [2023-11-29 01:27:13,779 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 758 transitions. [2023-11-29 01:27:13,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 758 transitions. [2023-11-29 01:27:13,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:27:13,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 758 transitions. [2023-11-29 01:27:13,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 252.66666666666666) internal successors, (758), 3 states have internal predecessors, (758), 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) [2023-11-29 01:27:13,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 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) [2023-11-29 01:27:13,783 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 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) [2023-11-29 01:27:13,783 INFO L175 Difference]: Start difference. First operand has 268 places, 274 transitions, 624 flow. Second operand 3 states and 758 transitions. [2023-11-29 01:27:13,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 268 transitions, 736 flow [2023-11-29 01:27:13,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 268 transitions, 732 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 01:27:13,793 INFO L231 Difference]: Finished difference. Result has 256 places, 262 transitions, 618 flow [2023-11-29 01:27:13,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=618, PETRI_PLACES=256, PETRI_TRANSITIONS=262} [2023-11-29 01:27:13,794 INFO L281 CegarLoopForPetriNet]: 300 programPoint places, -44 predicate places. [2023-11-29 01:27:13,794 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 262 transitions, 618 flow [2023-11-29 01:27:13,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 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) [2023-11-29 01:27:13,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:27:13,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:27:13,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 01:27:13,795 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2023-11-29 01:27:13,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:27:13,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1897869772, now seen corresponding path program 1 times [2023-11-29 01:27:13,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:27:13,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879645320] [2023-11-29 01:27:13,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:13,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:27:13,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:13,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:27:13,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:27:13,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879645320] [2023-11-29 01:27:13,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879645320] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:27:13,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:27:13,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:27:13,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012600461] [2023-11-29 01:27:13,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:27:13,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:27:13,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:27:13,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:27:13,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:27:13,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 318 [2023-11-29 01:27:13,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 262 transitions, 618 flow. Second operand has 3 states, 3 states have (on average 260.3333333333333) internal successors, (781), 3 states have internal predecessors, (781), 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) [2023-11-29 01:27:13,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:27:13,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 318 [2023-11-29 01:27:13,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:27:21,825 INFO L124 PetriNetUnfolderBase]: 8365/42344 cut-off events. [2023-11-29 01:27:21,825 INFO L125 PetriNetUnfolderBase]: For 9868/10184 co-relation queries the response was YES. [2023-11-29 01:27:22,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60651 conditions, 42344 events. 8365/42344 cut-off events. For 9868/10184 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 543672 event pairs, 3344 based on Foata normal form. 300/38769 useless extension candidates. Maximal degree in co-relation 42155. Up to 8245 conditions per place. [2023-11-29 01:27:22,309 INFO L140 encePairwiseOnDemand]: 306/318 looper letters, 51 selfloop transitions, 8 changer transitions 0/284 dead transitions. [2023-11-29 01:27:22,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 284 transitions, 816 flow [2023-11-29 01:27:22,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:27:22,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:27:22,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 840 transitions. [2023-11-29 01:27:22,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8805031446540881 [2023-11-29 01:27:22,312 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 840 transitions. [2023-11-29 01:27:22,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 840 transitions. [2023-11-29 01:27:22,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:27:22,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 840 transitions. [2023-11-29 01:27:22,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 280.0) internal successors, (840), 3 states have internal predecessors, (840), 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) [2023-11-29 01:27:22,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 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) [2023-11-29 01:27:22,316 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 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) [2023-11-29 01:27:22,316 INFO L175 Difference]: Start difference. First operand has 256 places, 262 transitions, 618 flow. Second operand 3 states and 840 transitions. [2023-11-29 01:27:22,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 284 transitions, 816 flow [2023-11-29 01:27:22,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 284 transitions, 794 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 01:27:22,333 INFO L231 Difference]: Finished difference. Result has 257 places, 266 transitions, 644 flow [2023-11-29 01:27:22,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=644, PETRI_PLACES=257, PETRI_TRANSITIONS=266} [2023-11-29 01:27:22,334 INFO L281 CegarLoopForPetriNet]: 300 programPoint places, -43 predicate places. [2023-11-29 01:27:22,334 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 266 transitions, 644 flow [2023-11-29 01:27:22,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 260.3333333333333) internal successors, (781), 3 states have internal predecessors, (781), 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) [2023-11-29 01:27:22,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:27:22,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:27:22,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 01:27:22,335 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2023-11-29 01:27:22,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:27:22,336 INFO L85 PathProgramCache]: Analyzing trace with hash -331024805, now seen corresponding path program 1 times [2023-11-29 01:27:22,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:27:22,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504883688] [2023-11-29 01:27:22,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:22,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:27:22,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:22,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:27:22,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:27:22,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504883688] [2023-11-29 01:27:22,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504883688] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:27:22,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:27:22,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:27:22,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541509746] [2023-11-29 01:27:22,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:27:22,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:27:22,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:27:22,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:27:22,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:27:22,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 318 [2023-11-29 01:27:22,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 266 transitions, 644 flow. Second operand has 3 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 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) [2023-11-29 01:27:22,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:27:22,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 318 [2023-11-29 01:27:22,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:27:30,387 INFO L124 PetriNetUnfolderBase]: 14395/39897 cut-off events. [2023-11-29 01:27:30,388 INFO L125 PetriNetUnfolderBase]: For 10657/12861 co-relation queries the response was YES. [2023-11-29 01:27:30,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67215 conditions, 39897 events. 14395/39897 cut-off events. For 10657/12861 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 426118 event pairs, 12733 based on Foata normal form. 0/34801 useless extension candidates. Maximal degree in co-relation 32034. Up to 22262 conditions per place. [2023-11-29 01:27:30,955 INFO L140 encePairwiseOnDemand]: 315/318 looper letters, 53 selfloop transitions, 2 changer transitions 0/271 dead transitions. [2023-11-29 01:27:30,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 271 transitions, 764 flow [2023-11-29 01:27:30,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:27:30,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:27:30,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 794 transitions. [2023-11-29 01:27:30,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8322851153039832 [2023-11-29 01:27:30,959 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 794 transitions. [2023-11-29 01:27:30,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 794 transitions. [2023-11-29 01:27:30,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:27:30,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 794 transitions. [2023-11-29 01:27:30,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 264.6666666666667) internal successors, (794), 3 states have internal predecessors, (794), 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) [2023-11-29 01:27:30,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 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) [2023-11-29 01:27:30,963 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 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) [2023-11-29 01:27:30,963 INFO L175 Difference]: Start difference. First operand has 257 places, 266 transitions, 644 flow. Second operand 3 states and 794 transitions. [2023-11-29 01:27:30,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 271 transitions, 764 flow [2023-11-29 01:27:31,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 271 transitions, 756 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:27:31,010 INFO L231 Difference]: Finished difference. Result has 257 places, 265 transitions, 638 flow [2023-11-29 01:27:31,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=638, PETRI_PLACES=257, PETRI_TRANSITIONS=265} [2023-11-29 01:27:31,011 INFO L281 CegarLoopForPetriNet]: 300 programPoint places, -43 predicate places. [2023-11-29 01:27:31,011 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 265 transitions, 638 flow [2023-11-29 01:27:31,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 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) [2023-11-29 01:27:31,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:27:31,011 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:27:31,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 01:27:31,011 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2023-11-29 01:27:31,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:27:31,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1764254368, now seen corresponding path program 1 times [2023-11-29 01:27:31,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:27:31,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909545128] [2023-11-29 01:27:31,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:31,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:27:31,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:31,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:27:31,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:27:31,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909545128] [2023-11-29 01:27:31,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909545128] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:27:31,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802322590] [2023-11-29 01:27:31,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:31,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:27:31,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964fd557-652e-4897-85fe-5aa9d363298f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:27:31,078 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964fd557-652e-4897-85fe-5aa9d363298f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:27:31,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964fd557-652e-4897-85fe-5aa9d363298f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:27:31,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:31,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:27:31,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:27:31,175 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:27:31,176 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:27:31,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802322590] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:27:31,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:27:31,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-29 01:27:31,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326706147] [2023-11-29 01:27:31,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:27:31,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:27:31,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:27:31,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:27:31,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:27:31,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 318 [2023-11-29 01:27:31,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 265 transitions, 638 flow. Second operand has 3 states, 3 states have (on average 249.33333333333334) internal successors, (748), 3 states have internal predecessors, (748), 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) [2023-11-29 01:27:31,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:27:31,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 318 [2023-11-29 01:27:31,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:27:39,380 INFO L124 PetriNetUnfolderBase]: 14395/39794 cut-off events. [2023-11-29 01:27:39,380 INFO L125 PetriNetUnfolderBase]: For 10689/12893 co-relation queries the response was YES. [2023-11-29 01:27:39,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66881 conditions, 39794 events. 14395/39794 cut-off events. For 10689/12893 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 424738 event pairs, 12733 based on Foata normal form. 0/34712 useless extension candidates. Maximal degree in co-relation 53929. Up to 22262 conditions per place. [2023-11-29 01:27:40,165 INFO L140 encePairwiseOnDemand]: 315/318 looper letters, 53 selfloop transitions, 2 changer transitions 0/270 dead transitions. [2023-11-29 01:27:40,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 270 transitions, 758 flow [2023-11-29 01:27:40,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:27:40,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:27:40,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 794 transitions. [2023-11-29 01:27:40,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8322851153039832 [2023-11-29 01:27:40,167 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 794 transitions. [2023-11-29 01:27:40,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 794 transitions. [2023-11-29 01:27:40,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:27:40,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 794 transitions. [2023-11-29 01:27:40,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 264.6666666666667) internal successors, (794), 3 states have internal predecessors, (794), 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) [2023-11-29 01:27:40,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 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) [2023-11-29 01:27:40,170 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 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) [2023-11-29 01:27:40,170 INFO L175 Difference]: Start difference. First operand has 257 places, 265 transitions, 638 flow. Second operand 3 states and 794 transitions. [2023-11-29 01:27:40,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 270 transitions, 758 flow [2023-11-29 01:27:40,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 270 transitions, 754 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 01:27:40,277 INFO L231 Difference]: Finished difference. Result has 256 places, 264 transitions, 636 flow [2023-11-29 01:27:40,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=636, PETRI_PLACES=256, PETRI_TRANSITIONS=264} [2023-11-29 01:27:40,277 INFO L281 CegarLoopForPetriNet]: 300 programPoint places, -44 predicate places. [2023-11-29 01:27:40,277 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 264 transitions, 636 flow [2023-11-29 01:27:40,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 249.33333333333334) internal successors, (748), 3 states have internal predecessors, (748), 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) [2023-11-29 01:27:40,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:27:40,278 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:27:40,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964fd557-652e-4897-85fe-5aa9d363298f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 01:27:40,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964fd557-652e-4897-85fe-5aa9d363298f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:27:40,478 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting checkThreadErr0ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2023-11-29 01:27:40,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:27:40,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1864681408, now seen corresponding path program 1 times [2023-11-29 01:27:40,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:27:40,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604935214] [2023-11-29 01:27:40,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:40,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:27:40,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:40,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:27:40,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:27:40,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604935214] [2023-11-29 01:27:40,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604935214] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:27:40,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13062944] [2023-11-29 01:27:40,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:40,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:27:40,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964fd557-652e-4897-85fe-5aa9d363298f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:27:40,555 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964fd557-652e-4897-85fe-5aa9d363298f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:27:40,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964fd557-652e-4897-85fe-5aa9d363298f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:27:40,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:40,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:27:40,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:27:40,666 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:27:40,667 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:27:40,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13062944] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:27:40,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:27:40,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-29 01:27:40,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872942535] [2023-11-29 01:27:40,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:27:40,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:27:40,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:27:40,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:27:40,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:27:40,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 318 [2023-11-29 01:27:40,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 264 transitions, 636 flow. Second operand has 3 states, 3 states have (on average 255.33333333333334) internal successors, (766), 3 states have internal predecessors, (766), 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) [2023-11-29 01:27:40,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:27:40,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 318 [2023-11-29 01:27:40,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand