./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-race.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 4fc63b2a 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_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-race.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU --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 c885fc256284ed3b5456c69b30daa307e14001acfa6c144983451f9519cbd1fd --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:11:36,443 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:11:36,528 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-31 22:11:36,533 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:11:36,533 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:11:36,562 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:11:36,562 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:11:36,563 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:11:36,563 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:11:36,564 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:11:36,564 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:11:36,565 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:11:36,565 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:11:36,566 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:11:36,566 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:11:36,566 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:11:36,567 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:11:36,567 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:11:36,568 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:11:36,568 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:11:36,568 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:11:36,569 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:11:36,569 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-31 22:11:36,570 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:11:36,570 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:11:36,571 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:11:36,571 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:11:36,571 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:11:36,572 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:11:36,572 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:11:36,573 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:11:36,573 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:11:36,573 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:11:36,574 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:11:36,574 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:11:36,575 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:11:36,575 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:11:36,575 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:11:36,576 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:11:36,576 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:11:36,576 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:11:36,577 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_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c885fc256284ed3b5456c69b30daa307e14001acfa6c144983451f9519cbd1fd [2024-10-31 22:11:36,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:11:36,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:11:36,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:11:36,939 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:11:36,940 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:11:36,941 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-race.i Unable to find full path for "g++" [2024-10-31 22:11:39,004 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:11:39,342 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:11:39,343 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/sv-benchmarks/c/pthread-ext/11_fmaxsymopt-race.i [2024-10-31 22:11:39,358 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/data/c93f49d12/f9363eda2c0541d09fd27c5b62fa4d28/FLAG4979fb4bc [2024-10-31 22:11:39,587 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/data/c93f49d12/f9363eda2c0541d09fd27c5b62fa4d28 [2024-10-31 22:11:39,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:11:39,591 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:11:39,594 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:11:39,594 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:11:39,602 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:11:39,603 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:11:39" (1/1) ... [2024-10-31 22:11:39,604 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3649df66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:39, skipping insertion in model container [2024-10-31 22:11:39,604 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:11:39" (1/1) ... [2024-10-31 22:11:39,670 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:11:40,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:11:40,072 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:11:40,139 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:11:40,177 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:11:40,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:40 WrapperNode [2024-10-31 22:11:40,178 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:11:40,179 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:11:40,179 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:11:40,179 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:11:40,187 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:40" (1/1) ... [2024-10-31 22:11:40,200 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:40" (1/1) ... [2024-10-31 22:11:40,235 INFO L138 Inliner]: procedures = 164, calls = 27, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 111 [2024-10-31 22:11:40,235 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:11:40,236 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:11:40,236 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:11:40,236 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:11:40,246 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:40" (1/1) ... [2024-10-31 22:11:40,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:40" (1/1) ... [2024-10-31 22:11:40,249 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:40" (1/1) ... [2024-10-31 22:11:40,253 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:40" (1/1) ... [2024-10-31 22:11:40,263 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:40" (1/1) ... [2024-10-31 22:11:40,271 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:40" (1/1) ... [2024-10-31 22:11:40,276 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:40" (1/1) ... [2024-10-31 22:11:40,281 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:40" (1/1) ... [2024-10-31 22:11:40,286 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:11:40,287 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:11:40,290 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:11:40,291 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:11:40,292 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:40" (1/1) ... [2024-10-31 22:11:40,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:11:40,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:40,331 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:11:40,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:11:40,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-31 22:11:40,361 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-31 22:11:40,361 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-31 22:11:40,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-31 22:11:40,361 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-31 22:11:40,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:11:40,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-31 22:11:40,362 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-31 22:11:40,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:11:40,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:11:40,364 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:11:40,498 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:11:40,501 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:11:40,898 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:11:40,899 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:11:40,933 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:11:40,936 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-31 22:11:40,937 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:11:40 BoogieIcfgContainer [2024-10-31 22:11:40,937 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:11:40,942 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:11:40,943 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:11:40,946 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:11:40,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:11:39" (1/3) ... [2024-10-31 22:11:40,948 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ab61934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:11:40, skipping insertion in model container [2024-10-31 22:11:40,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:40" (2/3) ... [2024-10-31 22:11:40,949 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ab61934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:11:40, skipping insertion in model container [2024-10-31 22:11:40,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:11:40" (3/3) ... [2024-10-31 22:11:40,951 INFO L112 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt-race.i [2024-10-31 22:11:40,971 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:11:40,972 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-10-31 22:11:40,973 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:11:41,071 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:11:41,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 126 transitions, 256 flow [2024-10-31 22:11:41,179 INFO L124 PetriNetUnfolderBase]: 12/135 cut-off events. [2024-10-31 22:11:41,179 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:11:41,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 135 events. 12/135 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 187 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 81. Up to 4 conditions per place. [2024-10-31 22:11:41,206 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 126 transitions, 256 flow [2024-10-31 22:11:41,211 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 126 transitions, 256 flow [2024-10-31 22:11:41,221 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:11:41,228 INFO L333 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, 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;@20135dfe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:11:41,228 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-10-31 22:11:41,264 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:11:41,264 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-10-31 22:11:41,265 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:11:41,265 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:41,266 INFO L204 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] [2024-10-31 22:11:41,266 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-31 22:11:41,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:41,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1413890492, now seen corresponding path program 1 times [2024-10-31 22:11:41,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:41,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811608957] [2024-10-31 22:11:41,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:41,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:41,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:42,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:42,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:42,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811608957] [2024-10-31 22:11:42,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811608957] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:42,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:42,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:11:42,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261993606] [2024-10-31 22:11:42,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:42,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:11:42,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:42,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:11:42,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:11:42,645 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 126 [2024-10-31 22:11:42,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 126 transitions, 256 flow. Second operand has 6 states, 6 states have (on average 99.5) internal successors, (597), 6 states have internal predecessors, (597), 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) [2024-10-31 22:11:42,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:42,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 126 [2024-10-31 22:11:42,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:42,757 INFO L124 PetriNetUnfolderBase]: 5/117 cut-off events. [2024-10-31 22:11:42,757 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-31 22:11:42,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 117 events. 5/117 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 129 event pairs, 0 based on Foata normal form. 13/119 useless extension candidates. Maximal degree in co-relation 76. Up to 14 conditions per place. [2024-10-31 22:11:42,759 INFO L140 encePairwiseOnDemand]: 113/126 looper letters, 13 selfloop transitions, 5 changer transitions 0/113 dead transitions. [2024-10-31 22:11:42,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 113 transitions, 266 flow [2024-10-31 22:11:42,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:11:42,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:11:42,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 614 transitions. [2024-10-31 22:11:42,777 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8121693121693122 [2024-10-31 22:11:42,781 INFO L175 Difference]: Start difference. First operand has 118 places, 126 transitions, 256 flow. Second operand 6 states and 614 transitions. [2024-10-31 22:11:42,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 113 transitions, 266 flow [2024-10-31 22:11:42,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 113 transitions, 266 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:11:42,793 INFO L231 Difference]: Finished difference. Result has 116 places, 113 transitions, 240 flow [2024-10-31 22:11:42,797 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=240, PETRI_PLACES=116, PETRI_TRANSITIONS=113} [2024-10-31 22:11:42,801 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, -2 predicate places. [2024-10-31 22:11:42,801 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 113 transitions, 240 flow [2024-10-31 22:11:42,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 99.5) internal successors, (597), 6 states have internal predecessors, (597), 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) [2024-10-31 22:11:42,802 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:42,803 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-10-31 22:11:42,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:11:42,804 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-31 22:11:42,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:42,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1553321828, now seen corresponding path program 1 times [2024-10-31 22:11:42,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:42,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315694706] [2024-10-31 22:11:42,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:42,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:42,862 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 22:11:42,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:42,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315694706] [2024-10-31 22:11:42,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315694706] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:42,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:42,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:11:42,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793769137] [2024-10-31 22:11:42,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:42,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:11:42,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:42,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:11:42,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:11:42,896 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 126 [2024-10-31 22:11:42,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 113 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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) [2024-10-31 22:11:42,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:42,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 126 [2024-10-31 22:11:42,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:42,943 INFO L124 PetriNetUnfolderBase]: 5/129 cut-off events. [2024-10-31 22:11:42,943 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-31 22:11:42,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 129 events. 5/129 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 125 event pairs, 0 based on Foata normal form. 1/120 useless extension candidates. Maximal degree in co-relation 92. Up to 9 conditions per place. [2024-10-31 22:11:42,945 INFO L140 encePairwiseOnDemand]: 123/126 looper letters, 7 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2024-10-31 22:11:42,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 114 transitions, 262 flow [2024-10-31 22:11:42,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:11:42,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:11:42,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 337 transitions. [2024-10-31 22:11:42,948 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8915343915343915 [2024-10-31 22:11:42,948 INFO L175 Difference]: Start difference. First operand has 116 places, 113 transitions, 240 flow. Second operand 3 states and 337 transitions. [2024-10-31 22:11:42,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 114 transitions, 262 flow [2024-10-31 22:11:42,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 114 transitions, 250 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-31 22:11:42,957 INFO L231 Difference]: Finished difference. Result has 114 places, 114 transitions, 242 flow [2024-10-31 22:11:42,957 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=114, PETRI_TRANSITIONS=114} [2024-10-31 22:11:42,959 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, -4 predicate places. [2024-10-31 22:11:42,960 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 114 transitions, 242 flow [2024-10-31 22:11:42,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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) [2024-10-31 22:11:42,960 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:42,961 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:42,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:11:42,962 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-31 22:11:42,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:42,964 INFO L85 PathProgramCache]: Analyzing trace with hash -582448135, now seen corresponding path program 1 times [2024-10-31 22:11:42,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:42,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742985752] [2024-10-31 22:11:42,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:42,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:43,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:43,099 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 22:11:43,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:43,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742985752] [2024-10-31 22:11:43,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742985752] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:11:43,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830278902] [2024-10-31 22:11:43,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:43,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:11:43,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:43,107 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:11:43,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:11:43,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:43,216 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:11:43,221 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:11:43,322 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 22:11:43,324 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:11:43,418 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 22:11:43,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830278902] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:11:43,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:11:43,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-31 22:11:43,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724071886] [2024-10-31 22:11:43,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:11:43,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:11:43,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:43,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:11:43,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:11:43,565 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 126 [2024-10-31 22:11:43,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 114 transitions, 242 flow. Second operand has 10 states, 10 states have (on average 107.9) internal successors, (1079), 10 states have internal predecessors, (1079), 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) [2024-10-31 22:11:43,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:43,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 126 [2024-10-31 22:11:43,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:43,726 INFO L124 PetriNetUnfolderBase]: 5/144 cut-off events. [2024-10-31 22:11:43,726 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:11:43,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 144 events. 5/144 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 99 event pairs, 0 based on Foata normal form. 2/136 useless extension candidates. Maximal degree in co-relation 127. Up to 9 conditions per place. [2024-10-31 22:11:43,728 INFO L140 encePairwiseOnDemand]: 120/126 looper letters, 11 selfloop transitions, 9 changer transitions 0/122 dead transitions. [2024-10-31 22:11:43,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 122 transitions, 300 flow [2024-10-31 22:11:43,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 22:11:43,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 22:11:43,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 976 transitions. [2024-10-31 22:11:43,734 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8606701940035273 [2024-10-31 22:11:43,734 INFO L175 Difference]: Start difference. First operand has 114 places, 114 transitions, 242 flow. Second operand 9 states and 976 transitions. [2024-10-31 22:11:43,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 122 transitions, 300 flow [2024-10-31 22:11:43,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 122 transitions, 298 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:11:43,743 INFO L231 Difference]: Finished difference. Result has 124 places, 120 transitions, 290 flow [2024-10-31 22:11:43,744 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=290, PETRI_PLACES=124, PETRI_TRANSITIONS=120} [2024-10-31 22:11:43,745 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 6 predicate places. [2024-10-31 22:11:43,746 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 120 transitions, 290 flow [2024-10-31 22:11:43,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 107.9) internal successors, (1079), 10 states have internal predecessors, (1079), 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) [2024-10-31 22:11:43,747 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:43,747 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-31 22:11:43,769 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:11:43,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:11:43,952 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-31 22:11:43,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:43,953 INFO L85 PathProgramCache]: Analyzing trace with hash 606994649, now seen corresponding path program 2 times [2024-10-31 22:11:43,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:43,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841028035] [2024-10-31 22:11:43,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:43,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:44,259 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 22:11:44,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:44,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841028035] [2024-10-31 22:11:44,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841028035] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:11:44,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023788966] [2024-10-31 22:11:44,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:11:44,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:11:44,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:44,262 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:11:44,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:11:44,394 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:11:44,395 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:11:44,397 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-31 22:11:44,400 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:11:44,534 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 22:11:44,534 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:11:44,723 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 22:11:44,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023788966] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:11:44,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:11:44,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-31 22:11:44,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721190343] [2024-10-31 22:11:44,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:11:44,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-31 22:11:44,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:44,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-31 22:11:44,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-31 22:11:44,889 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 126 [2024-10-31 22:11:44,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 120 transitions, 290 flow. Second operand has 15 states, 15 states have (on average 108.06666666666666) internal successors, (1621), 15 states have internal predecessors, (1621), 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) [2024-10-31 22:11:44,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:44,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 126 [2024-10-31 22:11:44,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:45,249 INFO L124 PetriNetUnfolderBase]: 5/183 cut-off events. [2024-10-31 22:11:45,253 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-10-31 22:11:45,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 183 events. 5/183 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 99 event pairs, 0 based on Foata normal form. 3/176 useless extension candidates. Maximal degree in co-relation 186. Up to 9 conditions per place. [2024-10-31 22:11:45,258 INFO L140 encePairwiseOnDemand]: 120/126 looper letters, 14 selfloop transitions, 18 changer transitions 0/134 dead transitions. [2024-10-31 22:11:45,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 134 transitions, 428 flow [2024-10-31 22:11:45,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-31 22:11:45,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-31 22:11:45,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1943 transitions. [2024-10-31 22:11:45,280 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8567019400352733 [2024-10-31 22:11:45,280 INFO L175 Difference]: Start difference. First operand has 124 places, 120 transitions, 290 flow. Second operand 18 states and 1943 transitions. [2024-10-31 22:11:45,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 134 transitions, 428 flow [2024-10-31 22:11:45,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 134 transitions, 416 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-10-31 22:11:45,286 INFO L231 Difference]: Finished difference. Result has 144 places, 130 transitions, 390 flow [2024-10-31 22:11:45,287 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=390, PETRI_PLACES=144, PETRI_TRANSITIONS=130} [2024-10-31 22:11:45,288 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 26 predicate places. [2024-10-31 22:11:45,288 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 130 transitions, 390 flow [2024-10-31 22:11:45,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 108.06666666666666) internal successors, (1621), 15 states have internal predecessors, (1621), 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) [2024-10-31 22:11:45,290 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:45,290 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2024-10-31 22:11:45,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 22:11:45,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:11:45,495 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-31 22:11:45,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:45,496 INFO L85 PathProgramCache]: Analyzing trace with hash 870487548, now seen corresponding path program 3 times [2024-10-31 22:11:45,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:45,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500548101] [2024-10-31 22:11:45,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:45,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:45,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:11:45,560 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:11:45,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:11:45,649 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:11:45,649 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:11:45,650 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-10-31 22:11:45,653 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2024-10-31 22:11:45,653 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2024-10-31 22:11:45,654 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2024-10-31 22:11:45,654 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2024-10-31 22:11:45,654 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2024-10-31 22:11:45,655 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2024-10-31 22:11:45,655 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2024-10-31 22:11:45,655 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2024-10-31 22:11:45,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2024-10-31 22:11:45,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:11:45,656 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-10-31 22:11:45,663 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:11:45,664 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-31 22:11:45,722 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:11:45,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 197 transitions, 404 flow [2024-10-31 22:11:45,789 INFO L124 PetriNetUnfolderBase]: 21/217 cut-off events. [2024-10-31 22:11:45,789 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:11:45,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 217 events. 21/217 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 504 event pairs, 0 based on Foata normal form. 0/184 useless extension candidates. Maximal degree in co-relation 151. Up to 6 conditions per place. [2024-10-31 22:11:45,792 INFO L82 GeneralOperation]: Start removeDead. Operand has 183 places, 197 transitions, 404 flow [2024-10-31 22:11:45,799 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 183 places, 197 transitions, 404 flow [2024-10-31 22:11:45,800 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:11:45,802 INFO L333 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, 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;@20135dfe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:11:45,802 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-10-31 22:11:45,807 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:11:45,811 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-10-31 22:11:45,811 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:11:45,811 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:45,811 INFO L204 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] [2024-10-31 22:11:45,812 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-31 22:11:45,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:45,812 INFO L85 PathProgramCache]: Analyzing trace with hash -525192223, now seen corresponding path program 1 times [2024-10-31 22:11:45,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:45,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003598422] [2024-10-31 22:11:45,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:45,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:45,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:46,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:46,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:46,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003598422] [2024-10-31 22:11:46,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003598422] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:46,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:46,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:11:46,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587472559] [2024-10-31 22:11:46,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:46,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:11:46,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:46,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:11:46,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:11:46,353 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 197 [2024-10-31 22:11:46,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 197 transitions, 404 flow. Second operand has 6 states, 6 states have (on average 158.5) internal successors, (951), 6 states have internal predecessors, (951), 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) [2024-10-31 22:11:46,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:46,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 197 [2024-10-31 22:11:46,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:46,577 INFO L124 PetriNetUnfolderBase]: 90/606 cut-off events. [2024-10-31 22:11:46,578 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-10-31 22:11:46,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 762 conditions, 606 events. 90/606 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3405 event pairs, 42 based on Foata normal form. 110/620 useless extension candidates. Maximal degree in co-relation 313. Up to 125 conditions per place. [2024-10-31 22:11:46,586 INFO L140 encePairwiseOnDemand]: 180/197 looper letters, 20 selfloop transitions, 5 changer transitions 0/178 dead transitions. [2024-10-31 22:11:46,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 178 transitions, 416 flow [2024-10-31 22:11:46,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:11:46,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:11:46,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 979 transitions. [2024-10-31 22:11:46,591 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8282571912013537 [2024-10-31 22:11:46,591 INFO L175 Difference]: Start difference. First operand has 183 places, 197 transitions, 404 flow. Second operand 6 states and 979 transitions. [2024-10-31 22:11:46,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 178 transitions, 416 flow [2024-10-31 22:11:46,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 178 transitions, 416 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:11:46,597 INFO L231 Difference]: Finished difference. Result has 179 places, 178 transitions, 376 flow [2024-10-31 22:11:46,597 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=376, PETRI_PLACES=179, PETRI_TRANSITIONS=178} [2024-10-31 22:11:46,598 INFO L277 CegarLoopForPetriNet]: 183 programPoint places, -4 predicate places. [2024-10-31 22:11:46,599 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 178 transitions, 376 flow [2024-10-31 22:11:46,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 158.5) internal successors, (951), 6 states have internal predecessors, (951), 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) [2024-10-31 22:11:46,600 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:46,600 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 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] [2024-10-31 22:11:46,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:11:46,601 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-31 22:11:46,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:46,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1573277030, now seen corresponding path program 1 times [2024-10-31 22:11:46,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:46,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158907076] [2024-10-31 22:11:46,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:46,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:46,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:46,652 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-31 22:11:46,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:46,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158907076] [2024-10-31 22:11:46,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158907076] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:46,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:46,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:11:46,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699024888] [2024-10-31 22:11:46,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:46,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:11:46,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:46,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:11:46,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:11:46,680 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 197 [2024-10-31 22:11:46,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 178 transitions, 376 flow. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 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) [2024-10-31 22:11:46,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:46,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 197 [2024-10-31 22:11:46,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:46,751 INFO L124 PetriNetUnfolderBase]: 23/350 cut-off events. [2024-10-31 22:11:46,751 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-10-31 22:11:46,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 350 events. 23/350 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1173 event pairs, 6 based on Foata normal form. 1/310 useless extension candidates. Maximal degree in co-relation 337. Up to 24 conditions per place. [2024-10-31 22:11:46,755 INFO L140 encePairwiseOnDemand]: 194/197 looper letters, 10 selfloop transitions, 2 changer transitions 0/179 dead transitions. [2024-10-31 22:11:46,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 179 transitions, 404 flow [2024-10-31 22:11:46,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:11:46,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:11:46,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 529 transitions. [2024-10-31 22:11:46,758 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8950930626057529 [2024-10-31 22:11:46,758 INFO L175 Difference]: Start difference. First operand has 179 places, 178 transitions, 376 flow. Second operand 3 states and 529 transitions. [2024-10-31 22:11:46,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 179 transitions, 404 flow [2024-10-31 22:11:46,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 179 transitions, 392 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-31 22:11:46,762 INFO L231 Difference]: Finished difference. Result has 177 places, 179 transitions, 378 flow [2024-10-31 22:11:46,762 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=378, PETRI_PLACES=177, PETRI_TRANSITIONS=179} [2024-10-31 22:11:46,763 INFO L277 CegarLoopForPetriNet]: 183 programPoint places, -6 predicate places. [2024-10-31 22:11:46,763 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 179 transitions, 378 flow [2024-10-31 22:11:46,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 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) [2024-10-31 22:11:46,764 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:46,764 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 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] [2024-10-31 22:11:46,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:11:46,765 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-31 22:11:46,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:46,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1381101320, now seen corresponding path program 1 times [2024-10-31 22:11:46,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:46,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070904020] [2024-10-31 22:11:46,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:46,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:46,855 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-31 22:11:46,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:46,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070904020] [2024-10-31 22:11:46,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070904020] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:11:46,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071410402] [2024-10-31 22:11:46,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:46,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:11:46,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:46,859 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:11:46,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:11:46,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:46,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:11:46,966 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:11:47,015 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-31 22:11:47,016 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:11:47,075 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-31 22:11:47,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071410402] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:11:47,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:11:47,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-31 22:11:47,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562082076] [2024-10-31 22:11:47,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:11:47,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:11:47,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:47,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:11:47,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:11:47,186 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 197 [2024-10-31 22:11:47,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 179 transitions, 378 flow. Second operand has 10 states, 10 states have (on average 171.0) internal successors, (1710), 10 states have internal predecessors, (1710), 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) [2024-10-31 22:11:47,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:47,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 197 [2024-10-31 22:11:47,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:47,365 INFO L124 PetriNetUnfolderBase]: 23/365 cut-off events. [2024-10-31 22:11:47,365 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-10-31 22:11:47,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 423 conditions, 365 events. 23/365 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1146 event pairs, 6 based on Foata normal form. 2/326 useless extension candidates. Maximal degree in co-relation 372. Up to 24 conditions per place. [2024-10-31 22:11:47,368 INFO L140 encePairwiseOnDemand]: 191/197 looper letters, 14 selfloop transitions, 9 changer transitions 0/187 dead transitions. [2024-10-31 22:11:47,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 187 transitions, 442 flow [2024-10-31 22:11:47,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 22:11:47,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 22:11:47,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1546 transitions. [2024-10-31 22:11:47,373 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8719684151156233 [2024-10-31 22:11:47,374 INFO L175 Difference]: Start difference. First operand has 177 places, 179 transitions, 378 flow. Second operand 9 states and 1546 transitions. [2024-10-31 22:11:47,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 187 transitions, 442 flow [2024-10-31 22:11:47,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 187 transitions, 440 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:11:47,379 INFO L231 Difference]: Finished difference. Result has 187 places, 185 transitions, 426 flow [2024-10-31 22:11:47,379 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=426, PETRI_PLACES=187, PETRI_TRANSITIONS=185} [2024-10-31 22:11:47,380 INFO L277 CegarLoopForPetriNet]: 183 programPoint places, 4 predicate places. [2024-10-31 22:11:47,380 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 185 transitions, 426 flow [2024-10-31 22:11:47,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 171.0) internal successors, (1710), 10 states have internal predecessors, (1710), 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) [2024-10-31 22:11:47,382 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:47,382 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-31 22:11:47,405 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 22:11:47,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-31 22:11:47,583 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-31 22:11:47,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:47,584 INFO L85 PathProgramCache]: Analyzing trace with hash -258899912, now seen corresponding path program 2 times [2024-10-31 22:11:47,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:47,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246630527] [2024-10-31 22:11:47,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:47,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:47,814 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-31 22:11:47,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:47,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246630527] [2024-10-31 22:11:47,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246630527] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:11:47,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616676286] [2024-10-31 22:11:47,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:11:47,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:11:47,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:47,818 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:11:47,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:11:47,943 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:11:47,943 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:11:47,945 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-31 22:11:47,948 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:11:48,055 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-31 22:11:48,056 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:11:48,206 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-31 22:11:48,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616676286] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:11:48,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:11:48,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-31 22:11:48,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164627544] [2024-10-31 22:11:48,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:11:48,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-31 22:11:48,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:48,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-31 22:11:48,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-31 22:11:48,344 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 197 [2024-10-31 22:11:48,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 185 transitions, 426 flow. Second operand has 15 states, 15 states have (on average 171.13333333333333) internal successors, (2567), 15 states have internal predecessors, (2567), 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) [2024-10-31 22:11:48,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:48,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 197 [2024-10-31 22:11:48,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:48,658 INFO L124 PetriNetUnfolderBase]: 23/404 cut-off events. [2024-10-31 22:11:48,662 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-10-31 22:11:48,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516 conditions, 404 events. 23/404 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1146 event pairs, 6 based on Foata normal form. 3/366 useless extension candidates. Maximal degree in co-relation 334. Up to 24 conditions per place. [2024-10-31 22:11:48,665 INFO L140 encePairwiseOnDemand]: 191/197 looper letters, 17 selfloop transitions, 18 changer transitions 0/199 dead transitions. [2024-10-31 22:11:48,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 199 transitions, 570 flow [2024-10-31 22:11:48,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-31 22:11:48,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-31 22:11:48,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3080 transitions. [2024-10-31 22:11:48,677 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8685843203609701 [2024-10-31 22:11:48,681 INFO L175 Difference]: Start difference. First operand has 187 places, 185 transitions, 426 flow. Second operand 18 states and 3080 transitions. [2024-10-31 22:11:48,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 199 transitions, 570 flow [2024-10-31 22:11:48,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 199 transitions, 558 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-10-31 22:11:48,686 INFO L231 Difference]: Finished difference. Result has 207 places, 195 transitions, 526 flow [2024-10-31 22:11:48,688 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=526, PETRI_PLACES=207, PETRI_TRANSITIONS=195} [2024-10-31 22:11:48,689 INFO L277 CegarLoopForPetriNet]: 183 programPoint places, 24 predicate places. [2024-10-31 22:11:48,689 INFO L471 AbstractCegarLoop]: Abstraction has has 207 places, 195 transitions, 526 flow [2024-10-31 22:11:48,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 171.13333333333333) internal successors, (2567), 15 states have internal predecessors, (2567), 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) [2024-10-31 22:11:48,691 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:48,691 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 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] [2024-10-31 22:11:48,732 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-31 22:11:48,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-31 22:11:48,904 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-31 22:11:48,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:48,905 INFO L85 PathProgramCache]: Analyzing trace with hash 2092416218, now seen corresponding path program 3 times [2024-10-31 22:11:48,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:48,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315362206] [2024-10-31 22:11:48,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:48,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:49,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:11:49,028 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:11:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:11:49,132 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:11:49,132 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:11:49,133 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2024-10-31 22:11:49,135 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2024-10-31 22:11:49,135 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2024-10-31 22:11:49,135 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2024-10-31 22:11:49,136 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2024-10-31 22:11:49,136 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2024-10-31 22:11:49,136 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2024-10-31 22:11:49,136 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 14 remaining) [2024-10-31 22:11:49,136 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2024-10-31 22:11:49,137 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining) [2024-10-31 22:11:49,137 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2024-10-31 22:11:49,137 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2024-10-31 22:11:49,137 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2024-10-31 22:11:49,137 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2024-10-31 22:11:49,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-31 22:11:49,138 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-10-31 22:11:49,138 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:11:49,138 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-31 22:11:49,234 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:11:49,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 248 places, 268 transitions, 554 flow [2024-10-31 22:11:49,295 INFO L124 PetriNetUnfolderBase]: 30/299 cut-off events. [2024-10-31 22:11:49,295 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-31 22:11:49,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 299 events. 30/299 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 903 event pairs, 0 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 221. Up to 8 conditions per place. [2024-10-31 22:11:49,299 INFO L82 GeneralOperation]: Start removeDead. Operand has 248 places, 268 transitions, 554 flow [2024-10-31 22:11:49,304 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 248 places, 268 transitions, 554 flow [2024-10-31 22:11:49,306 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:11:49,307 INFO L333 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, 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;@20135dfe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:11:49,307 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-10-31 22:11:49,313 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:11:49,313 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-10-31 22:11:49,313 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:11:49,313 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:49,314 INFO L204 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] [2024-10-31 22:11:49,314 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-31 22:11:49,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:49,315 INFO L85 PathProgramCache]: Analyzing trace with hash -568710291, now seen corresponding path program 1 times [2024-10-31 22:11:49,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:49,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618230518] [2024-10-31 22:11:49,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:49,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:49,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:49,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:49,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:49,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618230518] [2024-10-31 22:11:49,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618230518] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:49,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:49,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:11:49,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455777640] [2024-10-31 22:11:49,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:49,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:11:49,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:49,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:11:49,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:11:49,919 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 268 [2024-10-31 22:11:49,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 268 transitions, 554 flow. Second operand has 6 states, 6 states have (on average 217.5) internal successors, (1305), 6 states have internal predecessors, (1305), 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) [2024-10-31 22:11:49,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:49,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 268 [2024-10-31 22:11:49,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:50,819 INFO L124 PetriNetUnfolderBase]: 1081/4144 cut-off events. [2024-10-31 22:11:50,820 INFO L125 PetriNetUnfolderBase]: For 364/364 co-relation queries the response was YES. [2024-10-31 22:11:50,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5690 conditions, 4144 events. 1081/4144 cut-off events. For 364/364 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 39236 event pairs, 630 based on Foata normal form. 923/4280 useless extension candidates. Maximal degree in co-relation 1471. Up to 1318 conditions per place. [2024-10-31 22:11:50,881 INFO L140 encePairwiseOnDemand]: 247/268 looper letters, 27 selfloop transitions, 5 changer transitions 0/243 dead transitions. [2024-10-31 22:11:50,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 243 transitions, 568 flow [2024-10-31 22:11:50,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:11:50,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:11:50,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1344 transitions. [2024-10-31 22:11:50,950 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.835820895522388 [2024-10-31 22:11:50,950 INFO L175 Difference]: Start difference. First operand has 248 places, 268 transitions, 554 flow. Second operand 6 states and 1344 transitions. [2024-10-31 22:11:50,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 243 transitions, 568 flow [2024-10-31 22:11:50,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 243 transitions, 566 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-31 22:11:50,956 INFO L231 Difference]: Finished difference. Result has 242 places, 243 transitions, 512 flow [2024-10-31 22:11:50,957 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=512, PETRI_PLACES=242, PETRI_TRANSITIONS=243} [2024-10-31 22:11:50,958 INFO L277 CegarLoopForPetriNet]: 248 programPoint places, -6 predicate places. [2024-10-31 22:11:50,958 INFO L471 AbstractCegarLoop]: Abstraction has has 242 places, 243 transitions, 512 flow [2024-10-31 22:11:50,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 217.5) internal successors, (1305), 6 states have internal predecessors, (1305), 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) [2024-10-31 22:11:50,960 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:50,960 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:50,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-31 22:11:50,960 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-31 22:11:50,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:50,961 INFO L85 PathProgramCache]: Analyzing trace with hash 2102788219, now seen corresponding path program 1 times [2024-10-31 22:11:50,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:50,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019527853] [2024-10-31 22:11:50,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:50,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:50,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:51,000 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-31 22:11:51,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:51,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019527853] [2024-10-31 22:11:51,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019527853] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:51,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:51,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:11:51,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970556169] [2024-10-31 22:11:51,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:51,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:11:51,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:51,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:11:51,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:11:51,041 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 268 [2024-10-31 22:11:51,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 243 transitions, 512 flow. Second operand has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 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) [2024-10-31 22:11:51,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:51,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 268 [2024-10-31 22:11:51,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:51,301 INFO L124 PetriNetUnfolderBase]: 95/1031 cut-off events. [2024-10-31 22:11:51,302 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-10-31 22:11:51,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1172 conditions, 1031 events. 95/1031 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 6257 event pairs, 42 based on Foata normal form. 1/897 useless extension candidates. Maximal degree in co-relation 1108. Up to 87 conditions per place. [2024-10-31 22:11:51,318 INFO L140 encePairwiseOnDemand]: 265/268 looper letters, 13 selfloop transitions, 2 changer transitions 0/244 dead transitions. [2024-10-31 22:11:51,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 244 transitions, 546 flow [2024-10-31 22:11:51,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:11:51,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:11:51,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 721 transitions. [2024-10-31 22:11:51,320 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8967661691542289 [2024-10-31 22:11:51,321 INFO L175 Difference]: Start difference. First operand has 242 places, 243 transitions, 512 flow. Second operand 3 states and 721 transitions. [2024-10-31 22:11:51,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 244 transitions, 546 flow [2024-10-31 22:11:51,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 244 transitions, 534 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-31 22:11:51,326 INFO L231 Difference]: Finished difference. Result has 240 places, 244 transitions, 514 flow [2024-10-31 22:11:51,327 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=514, PETRI_PLACES=240, PETRI_TRANSITIONS=244} [2024-10-31 22:11:51,328 INFO L277 CegarLoopForPetriNet]: 248 programPoint places, -8 predicate places. [2024-10-31 22:11:51,328 INFO L471 AbstractCegarLoop]: Abstraction has has 240 places, 244 transitions, 514 flow [2024-10-31 22:11:51,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 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) [2024-10-31 22:11:51,328 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:51,329 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:51,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-31 22:11:51,329 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-31 22:11:51,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:51,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1237560471, now seen corresponding path program 1 times [2024-10-31 22:11:51,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:51,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536796381] [2024-10-31 22:11:51,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:51,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:51,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:51,424 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-31 22:11:51,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:51,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536796381] [2024-10-31 22:11:51,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536796381] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:11:51,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968205918] [2024-10-31 22:11:51,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:51,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:11:51,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:51,427 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:11:51,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 22:11:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:51,630 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:11:51,632 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:11:51,686 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-31 22:11:51,686 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:11:51,752 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-31 22:11:51,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968205918] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:11:51,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:11:51,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-31 22:11:51,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780804339] [2024-10-31 22:11:51,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:11:51,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:11:51,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:51,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:11:51,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:11:51,856 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 268 [2024-10-31 22:11:51,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 244 transitions, 514 flow. Second operand has 10 states, 10 states have (on average 234.1) internal successors, (2341), 10 states have internal predecessors, (2341), 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) [2024-10-31 22:11:51,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:51,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 268 [2024-10-31 22:11:51,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:52,202 INFO L124 PetriNetUnfolderBase]: 95/1046 cut-off events. [2024-10-31 22:11:52,202 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-10-31 22:11:52,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1195 conditions, 1046 events. 95/1046 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6217 event pairs, 42 based on Foata normal form. 2/913 useless extension candidates. Maximal degree in co-relation 1143. Up to 87 conditions per place. [2024-10-31 22:11:52,215 INFO L140 encePairwiseOnDemand]: 262/268 looper letters, 17 selfloop transitions, 9 changer transitions 0/252 dead transitions. [2024-10-31 22:11:52,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 252 transitions, 584 flow [2024-10-31 22:11:52,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 22:11:52,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 22:11:52,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2116 transitions. [2024-10-31 22:11:52,220 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8772802653399668 [2024-10-31 22:11:52,220 INFO L175 Difference]: Start difference. First operand has 240 places, 244 transitions, 514 flow. Second operand 9 states and 2116 transitions. [2024-10-31 22:11:52,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 252 transitions, 584 flow [2024-10-31 22:11:52,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 252 transitions, 582 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:11:52,226 INFO L231 Difference]: Finished difference. Result has 250 places, 250 transitions, 562 flow [2024-10-31 22:11:52,226 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=562, PETRI_PLACES=250, PETRI_TRANSITIONS=250} [2024-10-31 22:11:52,227 INFO L277 CegarLoopForPetriNet]: 248 programPoint places, 2 predicate places. [2024-10-31 22:11:52,227 INFO L471 AbstractCegarLoop]: Abstraction has has 250 places, 250 transitions, 562 flow [2024-10-31 22:11:52,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 234.1) internal successors, (2341), 10 states have internal predecessors, (2341), 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) [2024-10-31 22:11:52,228 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:52,228 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:52,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-31 22:11:52,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-31 22:11:52,429 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-31 22:11:52,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:52,430 INFO L85 PathProgramCache]: Analyzing trace with hash 805181609, now seen corresponding path program 2 times [2024-10-31 22:11:52,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:52,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354311519] [2024-10-31 22:11:52,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:52,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:52,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:52,605 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-31 22:11:52,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:52,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354311519] [2024-10-31 22:11:52,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354311519] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:11:52,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262680754] [2024-10-31 22:11:52,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:11:52,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:11:52,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:52,609 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:11:52,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-31 22:11:52,749 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:11:52,749 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:11:52,753 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-31 22:11:52,755 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:11:52,842 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-31 22:11:52,842 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:11:52,997 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-31 22:11:52,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262680754] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:11:52,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:11:52,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-31 22:11:52,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007245008] [2024-10-31 22:11:52,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:11:52,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-31 22:11:53,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:53,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-31 22:11:53,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-31 22:11:53,161 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 268 [2024-10-31 22:11:53,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 250 transitions, 562 flow. Second operand has 15 states, 15 states have (on average 234.2) internal successors, (3513), 15 states have internal predecessors, (3513), 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) [2024-10-31 22:11:53,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:53,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 268 [2024-10-31 22:11:53,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:53,639 INFO L124 PetriNetUnfolderBase]: 95/1085 cut-off events. [2024-10-31 22:11:53,640 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2024-10-31 22:11:53,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1288 conditions, 1085 events. 95/1085 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6263 event pairs, 42 based on Foata normal form. 3/953 useless extension candidates. Maximal degree in co-relation 1105. Up to 87 conditions per place. [2024-10-31 22:11:53,656 INFO L140 encePairwiseOnDemand]: 262/268 looper letters, 20 selfloop transitions, 18 changer transitions 0/264 dead transitions. [2024-10-31 22:11:53,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 264 transitions, 712 flow [2024-10-31 22:11:53,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-31 22:11:53,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-31 22:11:53,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4217 transitions. [2024-10-31 22:11:53,667 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8741708126036484 [2024-10-31 22:11:53,667 INFO L175 Difference]: Start difference. First operand has 250 places, 250 transitions, 562 flow. Second operand 18 states and 4217 transitions. [2024-10-31 22:11:53,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 264 transitions, 712 flow [2024-10-31 22:11:53,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 264 transitions, 700 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-10-31 22:11:53,675 INFO L231 Difference]: Finished difference. Result has 270 places, 260 transitions, 662 flow [2024-10-31 22:11:53,675 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=662, PETRI_PLACES=270, PETRI_TRANSITIONS=260} [2024-10-31 22:11:53,676 INFO L277 CegarLoopForPetriNet]: 248 programPoint places, 22 predicate places. [2024-10-31 22:11:53,676 INFO L471 AbstractCegarLoop]: Abstraction has has 270 places, 260 transitions, 662 flow [2024-10-31 22:11:53,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 234.2) internal successors, (3513), 15 states have internal predecessors, (3513), 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) [2024-10-31 22:11:53,679 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:53,679 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:53,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-31 22:11:53,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-31 22:11:53,883 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-31 22:11:53,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:53,884 INFO L85 PathProgramCache]: Analyzing trace with hash -968079173, now seen corresponding path program 3 times [2024-10-31 22:11:53,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:53,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848237034] [2024-10-31 22:11:53,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:53,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:53,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:11:53,949 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:11:53,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:11:53,991 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:11:53,992 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:11:53,992 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2024-10-31 22:11:53,992 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2024-10-31 22:11:53,993 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2024-10-31 22:11:53,993 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2024-10-31 22:11:53,993 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2024-10-31 22:11:53,993 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2024-10-31 22:11:53,993 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2024-10-31 22:11:53,994 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2024-10-31 22:11:53,994 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2024-10-31 22:11:53,994 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2024-10-31 22:11:53,994 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2024-10-31 22:11:53,994 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2024-10-31 22:11:53,995 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2024-10-31 22:11:53,995 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2024-10-31 22:11:53,995 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2024-10-31 22:11:53,995 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2024-10-31 22:11:53,995 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2024-10-31 22:11:53,995 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2024-10-31 22:11:53,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-31 22:11:53,996 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-10-31 22:11:53,997 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:11:53,997 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-31 22:11:54,056 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:11:54,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 313 places, 339 transitions, 706 flow [2024-10-31 22:11:54,139 INFO L124 PetriNetUnfolderBase]: 39/381 cut-off events. [2024-10-31 22:11:54,139 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-31 22:11:54,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 381 events. 39/381 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1314 event pairs, 0 based on Foata normal form. 0/320 useless extension candidates. Maximal degree in co-relation 307. Up to 10 conditions per place. [2024-10-31 22:11:54,144 INFO L82 GeneralOperation]: Start removeDead. Operand has 313 places, 339 transitions, 706 flow [2024-10-31 22:11:54,153 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 313 places, 339 transitions, 706 flow [2024-10-31 22:11:54,154 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:11:54,154 INFO L333 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, 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;@20135dfe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:11:54,154 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-10-31 22:11:54,159 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:11:54,159 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-10-31 22:11:54,159 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:11:54,159 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:54,160 INFO L204 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] [2024-10-31 22:11:54,160 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-31 22:11:54,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:54,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1283336288, now seen corresponding path program 1 times [2024-10-31 22:11:54,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:54,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842781630] [2024-10-31 22:11:54,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:54,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:54,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:54,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:54,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:54,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842781630] [2024-10-31 22:11:54,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842781630] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:54,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:54,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:11:54,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47941337] [2024-10-31 22:11:54,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:54,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:11:54,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:54,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:11:54,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:11:54,759 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 339 [2024-10-31 22:11:54,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 339 transitions, 706 flow. Second operand has 6 states, 6 states have (on average 276.5) internal successors, (1659), 6 states have internal predecessors, (1659), 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) [2024-10-31 22:11:54,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:54,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 339 [2024-10-31 22:11:54,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:12:02,060 INFO L124 PetriNetUnfolderBase]: 10778/30546 cut-off events. [2024-10-31 22:12:02,060 INFO L125 PetriNetUnfolderBase]: For 4130/4130 co-relation queries the response was YES. [2024-10-31 22:12:02,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44999 conditions, 30546 events. 10778/30546 cut-off events. For 4130/4130 co-relation queries the response was YES. Maximal size of possible extension queue 1419. Compared 371606 event pairs, 6804 based on Foata normal form. 7505/31785 useless extension candidates. Maximal degree in co-relation 6943. Up to 12509 conditions per place. [2024-10-31 22:12:02,816 INFO L140 encePairwiseOnDemand]: 314/339 looper letters, 34 selfloop transitions, 5 changer transitions 0/308 dead transitions. [2024-10-31 22:12:02,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 308 transitions, 722 flow [2024-10-31 22:12:02,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:12:02,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:12:02,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1709 transitions. [2024-10-31 22:12:02,822 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8402163225172075 [2024-10-31 22:12:02,822 INFO L175 Difference]: Start difference. First operand has 313 places, 339 transitions, 706 flow. Second operand 6 states and 1709 transitions. [2024-10-31 22:12:02,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 308 transitions, 722 flow [2024-10-31 22:12:02,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 308 transitions, 716 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-10-31 22:12:02,832 INFO L231 Difference]: Finished difference. Result has 305 places, 308 transitions, 648 flow [2024-10-31 22:12:02,833 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=648, PETRI_PLACES=305, PETRI_TRANSITIONS=308} [2024-10-31 22:12:02,834 INFO L277 CegarLoopForPetriNet]: 313 programPoint places, -8 predicate places. [2024-10-31 22:12:02,834 INFO L471 AbstractCegarLoop]: Abstraction has has 305 places, 308 transitions, 648 flow [2024-10-31 22:12:02,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 276.5) internal successors, (1659), 6 states have internal predecessors, (1659), 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) [2024-10-31 22:12:02,835 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:02,836 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:12:02,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-31 22:12:02,836 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-31 22:12:02,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:02,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1321109678, now seen corresponding path program 1 times [2024-10-31 22:12:02,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:02,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464429992] [2024-10-31 22:12:02,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:02,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:02,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:02,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:02,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:02,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464429992] [2024-10-31 22:12:02,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464429992] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:02,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:02,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:12:02,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671122698] [2024-10-31 22:12:02,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:02,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:12:02,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:02,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:12:02,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:12:02,955 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 339 [2024-10-31 22:12:02,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 308 transitions, 648 flow. Second operand has 3 states, 3 states have (on average 300.0) internal successors, (900), 3 states have internal predecessors, (900), 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) [2024-10-31 22:12:02,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:12:02,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 339 [2024-10-31 22:12:02,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:12:04,031 INFO L124 PetriNetUnfolderBase]: 365/3128 cut-off events. [2024-10-31 22:12:04,032 INFO L125 PetriNetUnfolderBase]: For 282/282 co-relation queries the response was YES. [2024-10-31 22:12:04,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3594 conditions, 3128 events. 365/3128 cut-off events. For 282/282 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 27378 event pairs, 204 based on Foata normal form. 1/2712 useless extension candidates. Maximal degree in co-relation 3529. Up to 330 conditions per place. [2024-10-31 22:12:04,069 INFO L140 encePairwiseOnDemand]: 336/339 looper letters, 16 selfloop transitions, 2 changer transitions 0/309 dead transitions. [2024-10-31 22:12:04,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 309 transitions, 688 flow [2024-10-31 22:12:04,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:12:04,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:12:04,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 913 transitions. [2024-10-31 22:12:04,071 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8977384464110127 [2024-10-31 22:12:04,072 INFO L175 Difference]: Start difference. First operand has 305 places, 308 transitions, 648 flow. Second operand 3 states and 913 transitions. [2024-10-31 22:12:04,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 309 transitions, 688 flow [2024-10-31 22:12:04,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 309 transitions, 676 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-31 22:12:04,079 INFO L231 Difference]: Finished difference. Result has 303 places, 309 transitions, 650 flow [2024-10-31 22:12:04,079 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=650, PETRI_PLACES=303, PETRI_TRANSITIONS=309} [2024-10-31 22:12:04,080 INFO L277 CegarLoopForPetriNet]: 313 programPoint places, -10 predicate places. [2024-10-31 22:12:04,080 INFO L471 AbstractCegarLoop]: Abstraction has has 303 places, 309 transitions, 650 flow [2024-10-31 22:12:04,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 300.0) internal successors, (900), 3 states have internal predecessors, (900), 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) [2024-10-31 22:12:04,081 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:04,081 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:12:04,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-31 22:12:04,081 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-31 22:12:04,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:04,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1049774545, now seen corresponding path program 1 times [2024-10-31 22:12:04,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:04,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859391095] [2024-10-31 22:12:04,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:04,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:04,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:04,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:04,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859391095] [2024-10-31 22:12:04,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859391095] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:12:04,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941546335] [2024-10-31 22:12:04,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:04,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:12:04,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:12:04,168 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:12:04,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-31 22:12:04,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:04,304 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:12:04,305 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:12:04,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:12:04,316 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:12:04,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941546335] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:04,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:12:04,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-31 22:12:04,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431250722] [2024-10-31 22:12:04,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:04,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:12:04,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:04,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:12:04,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:12:04,347 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 339 [2024-10-31 22:12:04,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 309 transitions, 650 flow. Second operand has 3 states, 3 states have (on average 299.3333333333333) internal successors, (898), 3 states have internal predecessors, (898), 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) [2024-10-31 22:12:04,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:12:04,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 339 [2024-10-31 22:12:04,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:12:05,616 INFO L124 PetriNetUnfolderBase]: 1136/6787 cut-off events. [2024-10-31 22:12:05,616 INFO L125 PetriNetUnfolderBase]: For 644/644 co-relation queries the response was YES. [2024-10-31 22:12:05,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8403 conditions, 6787 events. 1136/6787 cut-off events. For 644/644 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 71357 event pairs, 690 based on Foata normal form. 40/5841 useless extension candidates. Maximal degree in co-relation 8355. Up to 1091 conditions per place. [2024-10-31 22:12:05,712 INFO L140 encePairwiseOnDemand]: 336/339 looper letters, 27 selfloop transitions, 2 changer transitions 0/319 dead transitions. [2024-10-31 22:12:05,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 319 transitions, 743 flow [2024-10-31 22:12:05,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:12:05,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:12:05,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 921 transitions. [2024-10-31 22:12:05,715 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9056047197640118 [2024-10-31 22:12:05,715 INFO L175 Difference]: Start difference. First operand has 303 places, 309 transitions, 650 flow. Second operand 3 states and 921 transitions. [2024-10-31 22:12:05,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 319 transitions, 743 flow [2024-10-31 22:12:05,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 319 transitions, 741 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:12:05,723 INFO L231 Difference]: Finished difference. Result has 305 places, 310 transitions, 660 flow [2024-10-31 22:12:05,724 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=660, PETRI_PLACES=305, PETRI_TRANSITIONS=310} [2024-10-31 22:12:05,725 INFO L277 CegarLoopForPetriNet]: 313 programPoint places, -8 predicate places. [2024-10-31 22:12:05,725 INFO L471 AbstractCegarLoop]: Abstraction has has 305 places, 310 transitions, 660 flow [2024-10-31 22:12:05,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 299.3333333333333) internal successors, (898), 3 states have internal predecessors, (898), 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) [2024-10-31 22:12:05,726 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:05,726 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:12:05,748 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-31 22:12:05,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-31 22:12:05,927 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-31 22:12:05,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:05,927 INFO L85 PathProgramCache]: Analyzing trace with hash -433069135, now seen corresponding path program 1 times [2024-10-31 22:12:05,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:05,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718891135] [2024-10-31 22:12:05,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:05,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:05,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:06,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:06,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:06,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718891135] [2024-10-31 22:12:06,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718891135] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:12:06,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885418101] [2024-10-31 22:12:06,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:06,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:12:06,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:12:06,015 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:12:06,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-31 22:12:06,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:06,156 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:12:06,158 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:12:06,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:06,197 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:12:06,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:06,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885418101] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:12:06,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:12:06,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-31 22:12:06,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720603645] [2024-10-31 22:12:06,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:12:06,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:12:06,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:06,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:12:06,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:12:06,372 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 339 [2024-10-31 22:12:06,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 310 transitions, 660 flow. Second operand has 10 states, 10 states have (on average 296.9) internal successors, (2969), 10 states have internal predecessors, (2969), 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) [2024-10-31 22:12:06,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:12:06,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 339 [2024-10-31 22:12:06,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:12:07,217 INFO L124 PetriNetUnfolderBase]: 366/3162 cut-off events. [2024-10-31 22:12:07,217 INFO L125 PetriNetUnfolderBase]: For 281/281 co-relation queries the response was YES. [2024-10-31 22:12:07,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3641 conditions, 3162 events. 366/3162 cut-off events. For 281/281 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 27214 event pairs, 204 based on Foata normal form. 2/2742 useless extension candidates. Maximal degree in co-relation 3545. Up to 330 conditions per place. [2024-10-31 22:12:07,284 INFO L140 encePairwiseOnDemand]: 333/339 looper letters, 20 selfloop transitions, 9 changer transitions 0/318 dead transitions. [2024-10-31 22:12:07,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 318 transitions, 736 flow [2024-10-31 22:12:07,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 22:12:07,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 22:12:07,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2686 transitions. [2024-10-31 22:12:07,291 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8803670927564733 [2024-10-31 22:12:07,291 INFO L175 Difference]: Start difference. First operand has 305 places, 310 transitions, 660 flow. Second operand 9 states and 2686 transitions. [2024-10-31 22:12:07,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 318 transitions, 736 flow [2024-10-31 22:12:07,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 318 transitions, 734 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:12:07,301 INFO L231 Difference]: Finished difference. Result has 315 places, 316 transitions, 708 flow [2024-10-31 22:12:07,302 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=708, PETRI_PLACES=315, PETRI_TRANSITIONS=316} [2024-10-31 22:12:07,302 INFO L277 CegarLoopForPetriNet]: 313 programPoint places, 2 predicate places. [2024-10-31 22:12:07,302 INFO L471 AbstractCegarLoop]: Abstraction has has 315 places, 316 transitions, 708 flow [2024-10-31 22:12:07,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 296.9) internal successors, (2969), 10 states have internal predecessors, (2969), 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) [2024-10-31 22:12:07,304 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:07,305 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:12:07,326 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-31 22:12:07,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:12:07,506 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-31 22:12:07,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:07,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1329744367, now seen corresponding path program 2 times [2024-10-31 22:12:07,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:07,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901854364] [2024-10-31 22:12:07,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:07,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:07,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:07,765 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:07,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:07,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901854364] [2024-10-31 22:12:07,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901854364] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:12:07,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975795982] [2024-10-31 22:12:07,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:12:07,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:12:07,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:12:07,769 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:12:07,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68d1cd40-662b-43ef-b670-7d7f56f0b188/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-31 22:12:07,940 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-31 22:12:07,940 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:12:07,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-31 22:12:07,946 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:12:07,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-10-31 22:12:08,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-10-31 22:12:08,065 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-31 22:12:08,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2024-10-31 22:12:08,130 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-31 22:12:08,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2024-10-31 22:12:08,173 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-31 22:12:08,174 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:12:08,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975795982] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:08,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:12:08,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2024-10-31 22:12:08,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372418020] [2024-10-31 22:12:08,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:08,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:12:08,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:08,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:12:08,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156