./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.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_9c8fa364-8866-49a7-a130-2648273cb089/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8fa364-8866-49a7-a130-2648273cb089/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_9c8fa364-8866-49a7-a130-2648273cb089/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8fa364-8866-49a7-a130-2648273cb089/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8fa364-8866-49a7-a130-2648273cb089/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_9c8fa364-8866-49a7-a130-2648273cb089/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 4ce97f399f5ab540e05119d9433f4e1bfecfe892f8e87faddc6435387a55a4d6 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:17:59,392 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:17:59,457 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8fa364-8866-49a7-a130-2648273cb089/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-31 22:17:59,461 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:17:59,462 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:17:59,483 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:17:59,484 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:17:59,484 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:17:59,485 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:17:59,485 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:17:59,486 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:17:59,486 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:17:59,487 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:17:59,487 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:17:59,487 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:17:59,488 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:17:59,488 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:17:59,488 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:17:59,489 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:17:59,489 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:17:59,489 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:17:59,490 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:17:59,490 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-31 22:17:59,491 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:17:59,491 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:17:59,491 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:17:59,492 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:17:59,492 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:17:59,492 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:17:59,493 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:17:59,493 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:17:59,493 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:17:59,494 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:17:59,494 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:17:59,494 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:17:59,495 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:17:59,495 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:17:59,495 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:17:59,496 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:17:59,496 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:17:59,496 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:17:59,497 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_9c8fa364-8866-49a7-a130-2648273cb089/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8fa364-8866-49a7-a130-2648273cb089/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ce97f399f5ab540e05119d9433f4e1bfecfe892f8e87faddc6435387a55a4d6 [2024-10-31 22:17:59,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:17:59,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:17:59,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:17:59,845 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:17:59,845 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:17:59,847 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8fa364-8866-49a7-a130-2648273cb089/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i Unable to find full path for "g++" [2024-10-31 22:18:01,983 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:18:02,345 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:18:02,346 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8fa364-8866-49a7-a130-2648273cb089/sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i [2024-10-31 22:18:02,361 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8fa364-8866-49a7-a130-2648273cb089/bin/uautomizer-verify-4GaUIPS5ZU/data/a80f95242/e7146aaf5dac492589e7f63fae54f5ab/FLAG9f3429069 [2024-10-31 22:18:02,582 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8fa364-8866-49a7-a130-2648273cb089/bin/uautomizer-verify-4GaUIPS5ZU/data/a80f95242/e7146aaf5dac492589e7f63fae54f5ab [2024-10-31 22:18:02,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:18:02,595 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:18:02,596 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:18:02,596 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:18:02,613 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:18:02,614 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:18:02" (1/1) ... [2024-10-31 22:18:02,615 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4826f122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:02, skipping insertion in model container [2024-10-31 22:18:02,616 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:18:02" (1/1) ... [2024-10-31 22:18:02,708 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:18:03,212 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:18:03,241 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:18:03,326 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:18:03,387 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:18:03,388 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:03 WrapperNode [2024-10-31 22:18:03,388 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:18:03,389 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:18:03,390 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:18:03,390 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:18:03,399 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:03" (1/1) ... [2024-10-31 22:18:03,422 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:03" (1/1) ... [2024-10-31 22:18:03,480 INFO L138 Inliner]: procedures = 170, calls = 38, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 83 [2024-10-31 22:18:03,487 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:18:03,488 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:18:03,489 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:18:03,489 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:18:03,512 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:03" (1/1) ... [2024-10-31 22:18:03,512 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:03" (1/1) ... [2024-10-31 22:18:03,516 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:03" (1/1) ... [2024-10-31 22:18:03,516 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:03" (1/1) ... [2024-10-31 22:18:03,531 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:03" (1/1) ... [2024-10-31 22:18:03,538 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:03" (1/1) ... [2024-10-31 22:18:03,540 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:03" (1/1) ... [2024-10-31 22:18:03,543 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:03" (1/1) ... [2024-10-31 22:18:03,545 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:18:03,546 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:18:03,547 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:18:03,547 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:18:03,548 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:03" (1/1) ... [2024-10-31 22:18:03,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:18:03,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8fa364-8866-49a7-a130-2648273cb089/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:03,615 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8fa364-8866-49a7-a130-2648273cb089/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:03,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8fa364-8866-49a7-a130-2648273cb089/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:18:03,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-31 22:18:03,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-31 22:18:03,653 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-31 22:18:03,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:18:03,654 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-31 22:18:03,654 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-31 22:18:03,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-31 22:18:03,654 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-31 22:18:03,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:18:03,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:18:03,657 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 22:18:03,859 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:18:03,863 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:18:04,213 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:18:04,214 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:18:04,277 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:18:04,277 INFO L316 CfgBuilder]: Removed 9 assume(true) statements. [2024-10-31 22:18:04,278 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:18:04 BoogieIcfgContainer [2024-10-31 22:18:04,278 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:18:04,281 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:18:04,281 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:18:04,289 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:18:04,289 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:18:02" (1/3) ... [2024-10-31 22:18:04,290 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d812acb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:18:04, skipping insertion in model container [2024-10-31 22:18:04,293 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:03" (2/3) ... [2024-10-31 22:18:04,293 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d812acb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:18:04, skipping insertion in model container [2024-10-31 22:18:04,294 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:18:04" (3/3) ... [2024-10-31 22:18:04,295 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_22-deref_read_racefree.i [2024-10-31 22:18:04,317 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:18:04,317 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-10-31 22:18:04,318 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:18:04,401 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:18:04,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 158 transitions, 320 flow [2024-10-31 22:18:04,564 INFO L124 PetriNetUnfolderBase]: 16/213 cut-off events. [2024-10-31 22:18:04,564 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:18:04,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 213 events. 16/213 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 619 event pairs, 0 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 127. Up to 4 conditions per place. [2024-10-31 22:18:04,572 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 158 transitions, 320 flow [2024-10-31 22:18:04,578 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 150 places, 158 transitions, 320 flow [2024-10-31 22:18:04,588 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:18:04,598 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;@2d01d220, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:18:04,598 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-10-31 22:18:04,616 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:18:04,617 INFO L124 PetriNetUnfolderBase]: 1/37 cut-off events. [2024-10-31 22:18:04,618 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:18:04,618 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:18:04,618 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] [2024-10-31 22:18:04,619 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-31 22:18:04,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:04,623 INFO L85 PathProgramCache]: Analyzing trace with hash -2139724163, now seen corresponding path program 1 times [2024-10-31 22:18:04,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:04,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486475362] [2024-10-31 22:18:04,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:04,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:04,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:05,016 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 22:18:05,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:05,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486475362] [2024-10-31 22:18:05,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486475362] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:18:05,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:18:05,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:18:05,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379433150] [2024-10-31 22:18:05,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:18:05,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:18:05,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:05,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:18:05,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:18:05,095 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 158 [2024-10-31 22:18:05,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 158 transitions, 320 flow. Second operand has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 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 22:18:05,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:18:05,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 158 [2024-10-31 22:18:05,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:18:05,361 INFO L124 PetriNetUnfolderBase]: 48/581 cut-off events. [2024-10-31 22:18:05,361 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-31 22:18:05,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 699 conditions, 581 events. 48/581 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2754 event pairs, 35 based on Foata normal form. 55/575 useless extension candidates. Maximal degree in co-relation 655. Up to 106 conditions per place. [2024-10-31 22:18:05,371 INFO L140 encePairwiseOnDemand]: 144/158 looper letters, 21 selfloop transitions, 2 changer transitions 0/151 dead transitions. [2024-10-31 22:18:05,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 151 transitions, 352 flow [2024-10-31 22:18:05,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:18:05,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:18:05,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 429 transitions. [2024-10-31 22:18:05,388 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9050632911392406 [2024-10-31 22:18:05,390 INFO L175 Difference]: Start difference. First operand has 150 places, 158 transitions, 320 flow. Second operand 3 states and 429 transitions. [2024-10-31 22:18:05,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 151 transitions, 352 flow [2024-10-31 22:18:05,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 151 transitions, 352 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:18:05,400 INFO L231 Difference]: Finished difference. Result has 151 places, 145 transitions, 302 flow [2024-10-31 22:18:05,403 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=302, PETRI_PLACES=151, PETRI_TRANSITIONS=145} [2024-10-31 22:18:05,406 INFO L277 CegarLoopForPetriNet]: 150 programPoint places, 1 predicate places. [2024-10-31 22:18:05,407 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 145 transitions, 302 flow [2024-10-31 22:18:05,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 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 22:18:05,408 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:18:05,408 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] [2024-10-31 22:18:05,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:18:05,409 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-31 22:18:05,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:05,409 INFO L85 PathProgramCache]: Analyzing trace with hash 334440198, now seen corresponding path program 1 times [2024-10-31 22:18:05,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:05,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423903387] [2024-10-31 22:18:05,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:05,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:05,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:05,708 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 22:18:05,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:05,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423903387] [2024-10-31 22:18:05,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423903387] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:18:05,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255169627] [2024-10-31 22:18:05,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:05,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:05,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8fa364-8866-49a7-a130-2648273cb089/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:05,712 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8fa364-8866-49a7-a130-2648273cb089/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:18:05,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8fa364-8866-49a7-a130-2648273cb089/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:18:05,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:05,834 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:18:05,840 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:18:05,870 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 22:18:05,870 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:18:05,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255169627] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:18:05,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:18:05,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-31 22:18:05,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620883899] [2024-10-31 22:18:05,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:18:05,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:18:05,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:05,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:18:05,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:18:05,894 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 158 [2024-10-31 22:18:05,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 145 transitions, 302 flow. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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 22:18:05,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:18:05,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 158 [2024-10-31 22:18:05,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:18:06,042 INFO L124 PetriNetUnfolderBase]: 60/618 cut-off events. [2024-10-31 22:18:06,042 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:18:06,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 766 conditions, 618 events. 60/618 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3013 event pairs, 40 based on Foata normal form. 0/571 useless extension candidates. Maximal degree in co-relation 722. Up to 134 conditions per place. [2024-10-31 22:18:06,048 INFO L140 encePairwiseOnDemand]: 153/158 looper letters, 19 selfloop transitions, 2 changer transitions 0/146 dead transitions. [2024-10-31 22:18:06,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 146 transitions, 346 flow [2024-10-31 22:18:06,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:18:06,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:18:06,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 402 transitions. [2024-10-31 22:18:06,054 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8481012658227848 [2024-10-31 22:18:06,054 INFO L175 Difference]: Start difference. First operand has 151 places, 145 transitions, 302 flow. Second operand 3 states and 402 transitions. [2024-10-31 22:18:06,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 146 transitions, 346 flow [2024-10-31 22:18:06,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 146 transitions, 342 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:18:06,060 INFO L231 Difference]: Finished difference. Result has 149 places, 144 transitions, 306 flow [2024-10-31 22:18:06,061 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=306, PETRI_PLACES=149, PETRI_TRANSITIONS=144} [2024-10-31 22:18:06,062 INFO L277 CegarLoopForPetriNet]: 150 programPoint places, -1 predicate places. [2024-10-31 22:18:06,062 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 144 transitions, 306 flow [2024-10-31 22:18:06,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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 22:18:06,063 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:18:06,063 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] [2024-10-31 22:18:06,084 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8fa364-8866-49a7-a130-2648273cb089/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:18:06,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8fa364-8866-49a7-a130-2648273cb089/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:06,265 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-31 22:18:06,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:06,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1778246148, now seen corresponding path program 1 times [2024-10-31 22:18:06,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:06,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792821988] [2024-10-31 22:18:06,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:06,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:06,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:18:06,306 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:18:06,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:18:06,352 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:18:06,353 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:18:06,355 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-10-31 22:18:06,358 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2024-10-31 22:18:06,360 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2024-10-31 22:18:06,360 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2024-10-31 22:18:06,360 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2024-10-31 22:18:06,361 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2024-10-31 22:18:06,361 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2024-10-31 22:18:06,362 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2024-10-31 22:18:06,362 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2024-10-31 22:18:06,363 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2024-10-31 22:18:06,363 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2024-10-31 22:18:06,364 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2024-10-31 22:18:06,364 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2024-10-31 22:18:06,365 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2024-10-31 22:18:06,365 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2024-10-31 22:18:06,366 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2024-10-31 22:18:06,366 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2024-10-31 22:18:06,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:18:06,366 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-31 22:18:06,370 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:18:06,370 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-31 22:18:06,444 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:18:06,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 216 places, 228 transitions, 466 flow [2024-10-31 22:18:06,534 INFO L124 PetriNetUnfolderBase]: 27/341 cut-off events. [2024-10-31 22:18:06,534 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:18:06,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 341 events. 27/341 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1368 event pairs, 0 based on Foata normal form. 0/287 useless extension candidates. Maximal degree in co-relation 214. Up to 6 conditions per place. [2024-10-31 22:18:06,539 INFO L82 GeneralOperation]: Start removeDead. Operand has 216 places, 228 transitions, 466 flow [2024-10-31 22:18:06,545 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 216 places, 228 transitions, 466 flow [2024-10-31 22:18:06,551 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:18:06,552 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;@2d01d220, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:18:06,552 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-10-31 22:18:06,560 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:18:06,561 INFO L124 PetriNetUnfolderBase]: 1/37 cut-off events. [2024-10-31 22:18:06,561 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:18:06,561 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:18:06,561 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] [2024-10-31 22:18:06,562 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-31 22:18:06,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:06,562 INFO L85 PathProgramCache]: Analyzing trace with hash -2076926111, now seen corresponding path program 1 times [2024-10-31 22:18:06,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:06,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572533537] [2024-10-31 22:18:06,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:06,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:06,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:06,650 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 22:18:06,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:06,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572533537] [2024-10-31 22:18:06,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572533537] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:18:06,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:18:06,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:18:06,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54665174] [2024-10-31 22:18:06,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:18:06,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:18:06,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:06,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:18:06,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:18:06,676 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 228 [2024-10-31 22:18:06,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 228 transitions, 466 flow. Second operand has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 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 22:18:06,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:18:06,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 228 [2024-10-31 22:18:06,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:18:07,888 INFO L124 PetriNetUnfolderBase]: 762/5494 cut-off events. [2024-10-31 22:18:07,888 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-10-31 22:18:07,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6789 conditions, 5494 events. 762/5494 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 54455 event pairs, 336 based on Foata normal form. 681/5647 useless extension candidates. Maximal degree in co-relation 917. Up to 1261 conditions per place. [2024-10-31 22:18:07,938 INFO L140 encePairwiseOnDemand]: 208/228 looper letters, 29 selfloop transitions, 2 changer transitions 0/216 dead transitions. [2024-10-31 22:18:07,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 216 transitions, 504 flow [2024-10-31 22:18:07,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:18:07,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:18:07,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 614 transitions. [2024-10-31 22:18:07,942 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8976608187134503 [2024-10-31 22:18:07,942 INFO L175 Difference]: Start difference. First operand has 216 places, 228 transitions, 466 flow. Second operand 3 states and 614 transitions. [2024-10-31 22:18:07,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 216 transitions, 504 flow [2024-10-31 22:18:07,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 216 transitions, 504 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:18:07,949 INFO L231 Difference]: Finished difference. Result has 217 places, 210 transitions, 440 flow [2024-10-31 22:18:07,950 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=440, PETRI_PLACES=217, PETRI_TRANSITIONS=210} [2024-10-31 22:18:07,999 INFO L277 CegarLoopForPetriNet]: 216 programPoint places, 1 predicate places. [2024-10-31 22:18:07,999 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 210 transitions, 440 flow [2024-10-31 22:18:08,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 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 22:18:08,000 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:18:08,000 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] [2024-10-31 22:18:08,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:18:08,000 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-31 22:18:08,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:08,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1304754683, now seen corresponding path program 1 times [2024-10-31 22:18:08,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:08,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326173439] [2024-10-31 22:18:08,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:08,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:08,114 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 22:18:08,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:08,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326173439] [2024-10-31 22:18:08,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326173439] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:18:08,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664472273] [2024-10-31 22:18:08,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:08,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:08,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8fa364-8866-49a7-a130-2648273cb089/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:08,119 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8fa364-8866-49a7-a130-2648273cb089/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:18:08,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8fa364-8866-49a7-a130-2648273cb089/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:18:08,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:08,203 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:18:08,205 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:18:08,230 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 22:18:08,230 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:18:08,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664472273] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:18:08,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:18:08,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-31 22:18:08,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700323378] [2024-10-31 22:18:08,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:18:08,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:18:08,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:08,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:18:08,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:18:08,274 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 228 [2024-10-31 22:18:08,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 210 transitions, 440 flow. Second operand has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 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 22:18:08,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:18:08,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 228 [2024-10-31 22:18:08,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:18:10,003 INFO L124 PetriNetUnfolderBase]: 1490/8251 cut-off events. [2024-10-31 22:18:10,004 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-10-31 22:18:10,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10712 conditions, 8251 events. 1490/8251 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 86869 event pairs, 1046 based on Foata normal form. 0/7650 useless extension candidates. Maximal degree in co-relation 10664. Up to 2396 conditions per place. [2024-10-31 22:18:10,078 INFO L140 encePairwiseOnDemand]: 220/228 looper letters, 33 selfloop transitions, 3 changer transitions 0/213 dead transitions. [2024-10-31 22:18:10,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 213 transitions, 523 flow [2024-10-31 22:18:10,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:18:10,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:18:10,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 572 transitions. [2024-10-31 22:18:10,081 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8362573099415205 [2024-10-31 22:18:10,081 INFO L175 Difference]: Start difference. First operand has 217 places, 210 transitions, 440 flow. Second operand 3 states and 572 transitions. [2024-10-31 22:18:10,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 213 transitions, 523 flow [2024-10-31 22:18:10,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 213 transitions, 521 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:18:10,087 INFO L231 Difference]: Finished difference. Result has 214 places, 208 transitions, 449 flow [2024-10-31 22:18:10,088 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=449, PETRI_PLACES=214, PETRI_TRANSITIONS=208} [2024-10-31 22:18:10,089 INFO L277 CegarLoopForPetriNet]: 216 programPoint places, -2 predicate places. [2024-10-31 22:18:10,090 INFO L471 AbstractCegarLoop]: Abstraction has has 214 places, 208 transitions, 449 flow [2024-10-31 22:18:10,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 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 22:18:10,090 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:18:10,091 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] [2024-10-31 22:18:10,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8fa364-8866-49a7-a130-2648273cb089/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 22:18:10,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8fa364-8866-49a7-a130-2648273cb089/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:10,292 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-31 22:18:10,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:10,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1925053044, now seen corresponding path program 1 times [2024-10-31 22:18:10,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:10,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527457009] [2024-10-31 22:18:10,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:10,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:10,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:10,397 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 22:18:10,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:10,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527457009] [2024-10-31 22:18:10,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527457009] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:18:10,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960999259] [2024-10-31 22:18:10,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:10,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:10,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8fa364-8866-49a7-a130-2648273cb089/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:10,401 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8fa364-8866-49a7-a130-2648273cb089/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:18:10,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8fa364-8866-49a7-a130-2648273cb089/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:18:10,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:10,508 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:18:10,510 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:18:10,525 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 22:18:10,525 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:18:10,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960999259] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:18:10,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:18:10,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-31 22:18:10,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844790032] [2024-10-31 22:18:10,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:18:10,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:18:10,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:10,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:18:10,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:18:10,552 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 228 [2024-10-31 22:18:10,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 208 transitions, 449 flow. Second operand has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 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 22:18:10,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:18:10,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 228 [2024-10-31 22:18:10,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:18:11,611 INFO L124 PetriNetUnfolderBase]: 1057/5033 cut-off events. [2024-10-31 22:18:11,611 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-10-31 22:18:11,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6864 conditions, 5033 events. 1057/5033 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 47164 event pairs, 854 based on Foata normal form. 0/4532 useless extension candidates. Maximal degree in co-relation 6133. Up to 1434 conditions per place. [2024-10-31 22:18:11,654 INFO L140 encePairwiseOnDemand]: 225/228 looper letters, 35 selfloop transitions, 2 changer transitions 0/219 dead transitions. [2024-10-31 22:18:11,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 219 transitions, 545 flow [2024-10-31 22:18:11,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:18:11,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:18:11,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 590 transitions. [2024-10-31 22:18:11,657 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8625730994152047 [2024-10-31 22:18:11,657 INFO L175 Difference]: Start difference. First operand has 214 places, 208 transitions, 449 flow. Second operand 3 states and 590 transitions. [2024-10-31 22:18:11,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 219 transitions, 545 flow [2024-10-31 22:18:11,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 219 transitions, 545 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:18:11,661 INFO L231 Difference]: Finished difference. Result has 215 places, 207 transitions, 451 flow [2024-10-31 22:18:11,662 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=451, PETRI_PLACES=215, PETRI_TRANSITIONS=207} [2024-10-31 22:18:11,663 INFO L277 CegarLoopForPetriNet]: 216 programPoint places, -1 predicate places. [2024-10-31 22:18:11,663 INFO L471 AbstractCegarLoop]: Abstraction has has 215 places, 207 transitions, 451 flow [2024-10-31 22:18:11,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 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 22:18:11,664 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:18:11,664 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] [2024-10-31 22:18:11,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8fa364-8866-49a7-a130-2648273cb089/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 22:18:11,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8fa364-8866-49a7-a130-2648273cb089/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-31 22:18:11,865 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-31 22:18:11,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:11,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1712230884, now seen corresponding path program 1 times [2024-10-31 22:18:11,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:11,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161931385] [2024-10-31 22:18:11,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:11,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:11,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:12,458 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 22:18:12,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:12,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161931385] [2024-10-31 22:18:12,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161931385] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:18:12,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:18:12,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:18:12,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021352261] [2024-10-31 22:18:12,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:18:12,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:18:12,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:12,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:18:12,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:18:12,898 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 228 [2024-10-31 22:18:12,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 207 transitions, 451 flow. Second operand has 6 states, 6 states have (on average 148.5) internal successors, (891), 6 states have internal predecessors, (891), 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 22:18:12,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:18:12,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 228 [2024-10-31 22:18:12,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:18:19,054 INFO L124 PetriNetUnfolderBase]: 14160/34092 cut-off events. [2024-10-31 22:18:19,055 INFO L125 PetriNetUnfolderBase]: For 83/83 co-relation queries the response was YES. [2024-10-31 22:18:19,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57500 conditions, 34092 events. 14160/34092 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 1065. Compared 383271 event pairs, 4464 based on Foata normal form. 0/32872 useless extension candidates. Maximal degree in co-relation 56508. Up to 10096 conditions per place. [2024-10-31 22:18:19,344 INFO L140 encePairwiseOnDemand]: 184/228 looper letters, 219 selfloop transitions, 84 changer transitions 0/447 dead transitions. [2024-10-31 22:18:19,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 447 transitions, 1557 flow [2024-10-31 22:18:19,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:18:19,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:18:19,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1189 transitions. [2024-10-31 22:18:19,347 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8691520467836257 [2024-10-31 22:18:19,347 INFO L175 Difference]: Start difference. First operand has 215 places, 207 transitions, 451 flow. Second operand 6 states and 1189 transitions. [2024-10-31 22:18:19,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 447 transitions, 1557 flow [2024-10-31 22:18:19,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 447 transitions, 1553 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:18:19,358 INFO L231 Difference]: Finished difference. Result has 223 places, 299 transitions, 1079 flow [2024-10-31 22:18:19,358 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1079, PETRI_PLACES=223, PETRI_TRANSITIONS=299} [2024-10-31 22:18:19,360 INFO L277 CegarLoopForPetriNet]: 216 programPoint places, 7 predicate places. [2024-10-31 22:18:19,360 INFO L471 AbstractCegarLoop]: Abstraction has has 223 places, 299 transitions, 1079 flow [2024-10-31 22:18:19,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 148.5) internal successors, (891), 6 states have internal predecessors, (891), 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 22:18:19,361 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:18:19,361 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 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 22:18:19,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:18:19,362 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-31 22:18:19,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:19,364 INFO L85 PathProgramCache]: Analyzing trace with hash 608904427, now seen corresponding path program 1 times [2024-10-31 22:18:19,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:19,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188444066] [2024-10-31 22:18:19,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:19,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:19,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:18:19,387 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:18:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:18:19,412 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:18:19,412 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:18:19,412 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2024-10-31 22:18:19,413 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (21 of 23 remaining) [2024-10-31 22:18:19,413 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (20 of 23 remaining) [2024-10-31 22:18:19,413 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 23 remaining) [2024-10-31 22:18:19,413 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (18 of 23 remaining) [2024-10-31 22:18:19,415 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 23 remaining) [2024-10-31 22:18:19,416 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (16 of 23 remaining) [2024-10-31 22:18:19,416 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (15 of 23 remaining) [2024-10-31 22:18:19,416 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 23 remaining) [2024-10-31 22:18:19,416 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (13 of 23 remaining) [2024-10-31 22:18:19,417 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (12 of 23 remaining) [2024-10-31 22:18:19,417 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 23 remaining) [2024-10-31 22:18:19,417 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 23 remaining) [2024-10-31 22:18:19,417 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 23 remaining) [2024-10-31 22:18:19,417 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 23 remaining) [2024-10-31 22:18:19,418 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 23 remaining) [2024-10-31 22:18:19,418 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 23 remaining) [2024-10-31 22:18:19,418 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 23 remaining) [2024-10-31 22:18:19,418 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 23 remaining) [2024-10-31 22:18:19,418 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 23 remaining) [2024-10-31 22:18:19,418 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 23 remaining) [2024-10-31 22:18:19,418 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 23 remaining) [2024-10-31 22:18:19,419 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 23 remaining) [2024-10-31 22:18:19,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:18:19,419 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-31 22:18:19,420 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:18:19,421 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-31 22:18:19,475 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:18:19,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 282 places, 298 transitions, 614 flow [2024-10-31 22:18:19,569 INFO L124 PetriNetUnfolderBase]: 38/469 cut-off events. [2024-10-31 22:18:19,570 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-31 22:18:19,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 482 conditions, 469 events. 38/469 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2180 event pairs, 0 based on Foata normal form. 0/393 useless extension candidates. Maximal degree in co-relation 345. Up to 8 conditions per place. [2024-10-31 22:18:19,577 INFO L82 GeneralOperation]: Start removeDead. Operand has 282 places, 298 transitions, 614 flow [2024-10-31 22:18:19,584 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 282 places, 298 transitions, 614 flow [2024-10-31 22:18:19,585 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:18:19,586 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;@2d01d220, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:18:19,587 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-10-31 22:18:19,590 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:18:19,590 INFO L124 PetriNetUnfolderBase]: 1/37 cut-off events. [2024-10-31 22:18:19,590 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:18:19,590 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:18:19,590 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] [2024-10-31 22:18:19,591 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2024-10-31 22:18:19,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:19,591 INFO L85 PathProgramCache]: Analyzing trace with hash 378686603, now seen corresponding path program 1 times [2024-10-31 22:18:19,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:19,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197667044] [2024-10-31 22:18:19,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:19,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:19,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:19,633 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 22:18:19,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:19,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197667044] [2024-10-31 22:18:19,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197667044] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:18:19,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:18:19,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:18:19,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359462329] [2024-10-31 22:18:19,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:18:19,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:18:19,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:19,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:18:19,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:18:19,656 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 298 [2024-10-31 22:18:19,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 298 transitions, 614 flow. Second operand has 3 states, 3 states have (on average 244.33333333333334) internal successors, (733), 3 states have internal predecessors, (733), 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 22:18:19,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:18:19,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 298 [2024-10-31 22:18:19,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:18:27,665 INFO L124 PetriNetUnfolderBase]: 8406/45177 cut-off events. [2024-10-31 22:18:27,665 INFO L125 PetriNetUnfolderBase]: For 322/322 co-relation queries the response was YES. [2024-10-31 22:18:28,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57400 conditions, 45177 events. 8406/45177 cut-off events. For 322/322 co-relation queries the response was YES. Maximal size of possible extension queue 789. Compared 636508 event pairs, 7889 based on Foata normal form. 6810/47710 useless extension candidates. Maximal degree in co-relation 42816. Up to 11992 conditions per place. [2024-10-31 22:18:28,388 INFO L140 encePairwiseOnDemand]: 272/298 looper letters, 36 selfloop transitions, 2 changer transitions 0/280 dead transitions. [2024-10-31 22:18:28,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 280 transitions, 654 flow [2024-10-31 22:18:28,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:18:28,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:18:28,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 798 transitions. [2024-10-31 22:18:28,392 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8926174496644296 [2024-10-31 22:18:28,392 INFO L175 Difference]: Start difference. First operand has 282 places, 298 transitions, 614 flow. Second operand 3 states and 798 transitions. [2024-10-31 22:18:28,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 280 transitions, 654 flow [2024-10-31 22:18:28,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 280 transitions, 652 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-31 22:18:28,399 INFO L231 Difference]: Finished difference. Result has 283 places, 274 transitions, 574 flow [2024-10-31 22:18:28,399 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=574, PETRI_PLACES=283, PETRI_TRANSITIONS=274} [2024-10-31 22:18:28,401 INFO L277 CegarLoopForPetriNet]: 282 programPoint places, 1 predicate places. [2024-10-31 22:18:28,401 INFO L471 AbstractCegarLoop]: Abstraction has has 283 places, 274 transitions, 574 flow [2024-10-31 22:18:28,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 244.33333333333334) internal successors, (733), 3 states have internal predecessors, (733), 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 22:18:28,402 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:18:28,402 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] [2024-10-31 22:18:28,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:18:28,402 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2024-10-31 22:18:28,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:28,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1222789558, now seen corresponding path program 1 times [2024-10-31 22:18:28,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:28,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305139000] [2024-10-31 22:18:28,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:28,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:28,478 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 22:18:28,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:28,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305139000] [2024-10-31 22:18:28,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305139000] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:18:28,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650713201] [2024-10-31 22:18:28,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:28,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:28,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8fa364-8866-49a7-a130-2648273cb089/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:28,482 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8fa364-8866-49a7-a130-2648273cb089/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:18:28,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8fa364-8866-49a7-a130-2648273cb089/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:18:28,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:28,577 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:18:28,578 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:18:28,598 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 22:18:28,598 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:18:28,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650713201] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:18:28,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:18:28,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-31 22:18:28,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400268912] [2024-10-31 22:18:28,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:18:28,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:18:28,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:28,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:18:28,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:18:28,630 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 298 [2024-10-31 22:18:28,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 274 transitions, 574 flow. Second operand has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:18:28,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:18:28,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 298 [2024-10-31 22:18:28,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand