./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs-b.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff 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_ab0a4cac-5a5d-4850-94a1-217893e864c3/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0a4cac-5a5d-4850-94a1-217893e864c3/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0a4cac-5a5d-4850-94a1-217893e864c3/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0a4cac-5a5d-4850-94a1-217893e864c3/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs-b.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0a4cac-5a5d-4850-94a1-217893e864c3/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0a4cac-5a5d-4850-94a1-217893e864c3/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bee6bfabfc9168d01d046a770b423c49a0035ad8b39e289385170f3b76ba2fb2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:57:55,488 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:57:55,580 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0a4cac-5a5d-4850-94a1-217893e864c3/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 07:57:55,587 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:57:55,587 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:57:55,630 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:57:55,631 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:57:55,632 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:57:55,633 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:57:55,638 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:57:55,639 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:57:55,640 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:57:55,640 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:57:55,642 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:57:55,643 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:57:55,643 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:57:55,644 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:57:55,644 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:57:55,645 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:57:55,645 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:57:55,645 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:57:55,646 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:57:55,647 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 07:57:55,647 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:57:55,647 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:57:55,648 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:57:55,648 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:57:55,649 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:57:55,650 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:57:55,650 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:57:55,652 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:57:55,652 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:57:55,652 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:57:55,653 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:57:55,653 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:57:55,653 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:57:55,654 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:57:55,654 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:57:55,654 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:57:55,654 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:57:55,655 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:57:55,655 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_ab0a4cac-5a5d-4850-94a1-217893e864c3/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0a4cac-5a5d-4850-94a1-217893e864c3/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bee6bfabfc9168d01d046a770b423c49a0035ad8b39e289385170f3b76ba2fb2 [2023-11-19 07:57:55,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:57:55,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:57:55,987 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:57:55,989 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:57:55,989 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:57:55,991 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0a4cac-5a5d-4850-94a1-217893e864c3/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs-b.i [2023-11-19 07:57:59,181 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:57:59,472 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:57:59,473 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0a4cac-5a5d-4850-94a1-217893e864c3/sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs-b.i [2023-11-19 07:57:59,492 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0a4cac-5a5d-4850-94a1-217893e864c3/bin/uautomizer-verify-uCwYo4JHxu/data/a060ff18e/d0a2eaf9c6c14fbf9eeff21e51876bbb/FLAG435f0463b [2023-11-19 07:57:59,507 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0a4cac-5a5d-4850-94a1-217893e864c3/bin/uautomizer-verify-uCwYo4JHxu/data/a060ff18e/d0a2eaf9c6c14fbf9eeff21e51876bbb [2023-11-19 07:57:59,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:57:59,512 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:57:59,514 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:57:59,514 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:57:59,524 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:57:59,525 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:59" (1/1) ... [2023-11-19 07:57:59,526 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20de2a2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:59, skipping insertion in model container [2023-11-19 07:57:59,527 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:59" (1/1) ... [2023-11-19 07:57:59,575 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:57:59,997 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:58:00,015 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:58:00,087 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:58:00,131 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:58:00,132 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:00 WrapperNode [2023-11-19 07:58:00,132 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:58:00,133 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:58:00,133 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:58:00,133 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:58:00,141 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:00" (1/1) ... [2023-11-19 07:58:00,159 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:00" (1/1) ... [2023-11-19 07:58:00,192 INFO L138 Inliner]: procedures = 169, calls = 20, calls flagged for inlining = 6, calls inlined = 9, statements flattened = 186 [2023-11-19 07:58:00,193 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:58:00,200 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:58:00,200 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:58:00,201 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:58:00,210 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:00" (1/1) ... [2023-11-19 07:58:00,210 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:00" (1/1) ... [2023-11-19 07:58:00,215 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:00" (1/1) ... [2023-11-19 07:58:00,215 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:00" (1/1) ... [2023-11-19 07:58:00,229 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:00" (1/1) ... [2023-11-19 07:58:00,233 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:00" (1/1) ... [2023-11-19 07:58:00,236 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:00" (1/1) ... [2023-11-19 07:58:00,238 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:00" (1/1) ... [2023-11-19 07:58:00,242 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:58:00,243 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:58:00,243 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:58:00,243 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:58:00,244 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:00" (1/1) ... [2023-11-19 07:58:00,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:58:00,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0a4cac-5a5d-4850-94a1-217893e864c3/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:00,309 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0a4cac-5a5d-4850-94a1-217893e864c3/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:58:00,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0a4cac-5a5d-4850-94a1-217893e864c3/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:58:00,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:58:00,360 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-19 07:58:00,360 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-19 07:58:00,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:58:00,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:58:00,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:58:00,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:58:00,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:58:00,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:58:00,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:58:00,362 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:58:00,510 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:58:00,512 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:58:00,915 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:58:01,092 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:58:01,093 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-19 07:58:01,097 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:58:01 BoogieIcfgContainer [2023-11-19 07:58:01,098 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:58:01,100 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:58:01,100 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:58:01,104 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:58:01,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:57:59" (1/3) ... [2023-11-19 07:58:01,105 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1300f00d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:58:01, skipping insertion in model container [2023-11-19 07:58:01,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:00" (2/3) ... [2023-11-19 07:58:01,106 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1300f00d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:58:01, skipping insertion in model container [2023-11-19 07:58:01,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:58:01" (3/3) ... [2023-11-19 07:58:01,107 INFO L112 eAbstractionObserver]: Analyzing ICFG 48_ticket_lock_low_contention_vs-b.i [2023-11-19 07:58:01,118 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:58:01,130 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:58:01,130 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2023-11-19 07:58:01,131 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:58:01,212 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:58:01,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 156 places, 162 transitions, 328 flow [2023-11-19 07:58:01,375 INFO L124 PetriNetUnfolderBase]: 14/246 cut-off events. [2023-11-19 07:58:01,376 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:58:01,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 246 events. 14/246 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 817 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 148. Up to 4 conditions per place. [2023-11-19 07:58:01,391 INFO L82 GeneralOperation]: Start removeDead. Operand has 156 places, 162 transitions, 328 flow [2023-11-19 07:58:01,404 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 156 places, 162 transitions, 328 flow [2023-11-19 07:58:01,407 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:58:01,418 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 162 transitions, 328 flow [2023-11-19 07:58:01,420 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 156 places, 162 transitions, 328 flow [2023-11-19 07:58:01,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 156 places, 162 transitions, 328 flow [2023-11-19 07:58:01,523 INFO L124 PetriNetUnfolderBase]: 14/246 cut-off events. [2023-11-19 07:58:01,523 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:58:01,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 246 events. 14/246 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 817 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 148. Up to 4 conditions per place. [2023-11-19 07:58:01,539 INFO L119 LiptonReduction]: Number of co-enabled transitions 10788 [2023-11-19 07:58:03,322 INFO L134 LiptonReduction]: Checked pairs total: 50677 [2023-11-19 07:58:03,323 INFO L136 LiptonReduction]: Total number of compositions: 88 [2023-11-19 07:58:03,339 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:58:03,346 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@25440c16, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:58:03,347 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2023-11-19 07:58:03,349 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:58:03,350 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-11-19 07:58:03,350 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:58:03,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:03,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:58:03,351 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2023-11-19 07:58:03,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:03,357 INFO L85 PathProgramCache]: Analyzing trace with hash 695943, now seen corresponding path program 1 times [2023-11-19 07:58:03,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:03,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270647705] [2023-11-19 07:58:03,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:03,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:03,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:03,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:03,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270647705] [2023-11-19 07:58:03,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270647705] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:03,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:03,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:58:03,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843947338] [2023-11-19 07:58:03,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:03,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:58:03,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:03,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:58:03,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:58:03,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 250 [2023-11-19 07:58:03,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 96 transitions, 196 flow. Second operand has 2 states, 2 states have (on average 141.5) internal successors, (283), 2 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:03,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:03,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 250 [2023-11-19 07:58:03,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:03,783 INFO L124 PetriNetUnfolderBase]: 167/655 cut-off events. [2023-11-19 07:58:03,783 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:58:03,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1006 conditions, 655 events. 167/655 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3646 event pairs, 140 based on Foata normal form. 39/569 useless extension candidates. Maximal degree in co-relation 943. Up to 347 conditions per place. [2023-11-19 07:58:03,790 INFO L140 encePairwiseOnDemand]: 234/250 looper letters, 28 selfloop transitions, 0 changer transitions 0/77 dead transitions. [2023-11-19 07:58:03,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 77 transitions, 214 flow [2023-11-19 07:58:03,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:58:03,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:58:03,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 324 transitions. [2023-11-19 07:58:03,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.648 [2023-11-19 07:58:03,817 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 324 transitions. [2023-11-19 07:58:03,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 324 transitions. [2023-11-19 07:58:03,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:03,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 324 transitions. [2023-11-19 07:58:03,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 162.0) internal successors, (324), 2 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:03,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:03,838 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:03,841 INFO L175 Difference]: Start difference. First operand has 91 places, 96 transitions, 196 flow. Second operand 2 states and 324 transitions. [2023-11-19 07:58:03,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 77 transitions, 214 flow [2023-11-19 07:58:03,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 77 transitions, 214 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:58:03,848 INFO L231 Difference]: Finished difference. Result has 79 places, 77 transitions, 158 flow [2023-11-19 07:58:03,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=158, PETRI_PLACES=79, PETRI_TRANSITIONS=77} [2023-11-19 07:58:03,857 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -12 predicate places. [2023-11-19 07:58:03,858 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 77 transitions, 158 flow [2023-11-19 07:58:03,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 141.5) internal successors, (283), 2 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:03,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:03,859 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 07:58:03,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:58:03,860 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2023-11-19 07:58:03,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:03,861 INFO L85 PathProgramCache]: Analyzing trace with hash -737523844, now seen corresponding path program 1 times [2023-11-19 07:58:03,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:03,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635346260] [2023-11-19 07:58:03,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:03,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:03,921 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:58:03,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:03,981 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:58:03,981 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:58:03,983 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (36 of 37 remaining) [2023-11-19 07:58:03,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (35 of 37 remaining) [2023-11-19 07:58:03,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (34 of 37 remaining) [2023-11-19 07:58:03,987 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (33 of 37 remaining) [2023-11-19 07:58:03,987 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (32 of 37 remaining) [2023-11-19 07:58:03,988 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (31 of 37 remaining) [2023-11-19 07:58:03,988 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (30 of 37 remaining) [2023-11-19 07:58:03,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (29 of 37 remaining) [2023-11-19 07:58:03,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (28 of 37 remaining) [2023-11-19 07:58:03,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (27 of 37 remaining) [2023-11-19 07:58:03,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (26 of 37 remaining) [2023-11-19 07:58:03,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (25 of 37 remaining) [2023-11-19 07:58:03,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (24 of 37 remaining) [2023-11-19 07:58:03,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (23 of 37 remaining) [2023-11-19 07:58:03,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (22 of 37 remaining) [2023-11-19 07:58:03,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (21 of 37 remaining) [2023-11-19 07:58:03,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (20 of 37 remaining) [2023-11-19 07:58:03,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (19 of 37 remaining) [2023-11-19 07:58:04,004 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (18 of 37 remaining) [2023-11-19 07:58:04,004 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (17 of 37 remaining) [2023-11-19 07:58:04,005 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (16 of 37 remaining) [2023-11-19 07:58:04,005 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (15 of 37 remaining) [2023-11-19 07:58:04,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (14 of 37 remaining) [2023-11-19 07:58:04,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (13 of 37 remaining) [2023-11-19 07:58:04,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (12 of 37 remaining) [2023-11-19 07:58:04,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 37 remaining) [2023-11-19 07:58:04,008 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 37 remaining) [2023-11-19 07:58:04,008 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 37 remaining) [2023-11-19 07:58:04,008 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 37 remaining) [2023-11-19 07:58:04,008 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 37 remaining) [2023-11-19 07:58:04,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (6 of 37 remaining) [2023-11-19 07:58:04,010 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (5 of 37 remaining) [2023-11-19 07:58:04,010 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (4 of 37 remaining) [2023-11-19 07:58:04,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (3 of 37 remaining) [2023-11-19 07:58:04,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (2 of 37 remaining) [2023-11-19 07:58:04,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (1 of 37 remaining) [2023-11-19 07:58:04,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (0 of 37 remaining) [2023-11-19 07:58:04,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:58:04,016 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 07:58:04,020 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:58:04,021 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:58:04,090 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:58:04,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 225 transitions, 460 flow [2023-11-19 07:58:04,173 INFO L124 PetriNetUnfolderBase]: 23/395 cut-off events. [2023-11-19 07:58:04,173 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:58:04,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 395 events. 23/395 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1720 event pairs, 0 based on Foata normal form. 0/309 useless extension candidates. Maximal degree in co-relation 247. Up to 6 conditions per place. [2023-11-19 07:58:04,178 INFO L82 GeneralOperation]: Start removeDead. Operand has 217 places, 225 transitions, 460 flow [2023-11-19 07:58:04,185 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 217 places, 225 transitions, 460 flow [2023-11-19 07:58:04,185 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:58:04,185 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 217 places, 225 transitions, 460 flow [2023-11-19 07:58:04,186 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 217 places, 225 transitions, 460 flow [2023-11-19 07:58:04,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 225 transitions, 460 flow [2023-11-19 07:58:04,290 INFO L124 PetriNetUnfolderBase]: 23/395 cut-off events. [2023-11-19 07:58:04,292 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:58:04,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 395 events. 23/395 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1720 event pairs, 0 based on Foata normal form. 0/309 useless extension candidates. Maximal degree in co-relation 247. Up to 6 conditions per place. [2023-11-19 07:58:04,321 INFO L119 LiptonReduction]: Number of co-enabled transitions 29388 [2023-11-19 07:58:06,269 INFO L134 LiptonReduction]: Checked pairs total: 126468 [2023-11-19 07:58:06,270 INFO L136 LiptonReduction]: Total number of compositions: 110 [2023-11-19 07:58:06,272 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:58:06,273 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@25440c16, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:58:06,274 INFO L358 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2023-11-19 07:58:06,276 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:58:06,276 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-11-19 07:58:06,276 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:58:06,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:06,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:58:06,277 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2023-11-19 07:58:06,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:06,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1093986, now seen corresponding path program 1 times [2023-11-19 07:58:06,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:06,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854066731] [2023-11-19 07:58:06,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:06,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:06,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:06,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:06,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:06,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854066731] [2023-11-19 07:58:06,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854066731] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:06,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:06,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:58:06,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002454034] [2023-11-19 07:58:06,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:06,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:58:06,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:06,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:58:06,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:58:06,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 335 [2023-11-19 07:58:06,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 143 transitions, 296 flow. Second operand has 2 states, 2 states have (on average 193.5) internal successors, (387), 2 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:06,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:06,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 335 [2023-11-19 07:58:06,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:07,779 INFO L124 PetriNetUnfolderBase]: 3863/9003 cut-off events. [2023-11-19 07:58:07,780 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-11-19 07:58:07,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14921 conditions, 9003 events. 3863/9003 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 79240 event pairs, 3383 based on Foata normal form. 1104/8848 useless extension candidates. Maximal degree in co-relation 9720. Up to 5880 conditions per place. [2023-11-19 07:58:07,865 INFO L140 encePairwiseOnDemand]: 311/335 looper letters, 40 selfloop transitions, 0 changer transitions 0/115 dead transitions. [2023-11-19 07:58:07,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 115 transitions, 320 flow [2023-11-19 07:58:07,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:58:07,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:58:07,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 448 transitions. [2023-11-19 07:58:07,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6686567164179105 [2023-11-19 07:58:07,869 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 448 transitions. [2023-11-19 07:58:07,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 448 transitions. [2023-11-19 07:58:07,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:07,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 448 transitions. [2023-11-19 07:58:07,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 224.0) internal successors, (448), 2 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:07,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 335.0) internal successors, (1005), 3 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:07,878 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 335.0) internal successors, (1005), 3 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:07,879 INFO L175 Difference]: Start difference. First operand has 136 places, 143 transitions, 296 flow. Second operand 2 states and 448 transitions. [2023-11-19 07:58:07,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 115 transitions, 320 flow [2023-11-19 07:58:07,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 115 transitions, 320 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:58:07,883 INFO L231 Difference]: Finished difference. Result has 118 places, 115 transitions, 240 flow [2023-11-19 07:58:07,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=240, PETRI_PLACES=118, PETRI_TRANSITIONS=115} [2023-11-19 07:58:07,885 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, -18 predicate places. [2023-11-19 07:58:07,885 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 115 transitions, 240 flow [2023-11-19 07:58:07,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 193.5) internal successors, (387), 2 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:07,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:07,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:07,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:58:07,887 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2023-11-19 07:58:07,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:07,887 INFO L85 PathProgramCache]: Analyzing trace with hash 2004945710, now seen corresponding path program 1 times [2023-11-19 07:58:07,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:07,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702958280] [2023-11-19 07:58:07,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:07,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:07,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:08,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:08,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:08,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702958280] [2023-11-19 07:58:08,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702958280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:08,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:08,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:58:08,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707487915] [2023-11-19 07:58:08,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:08,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:58:08,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:08,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:58:08,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:58:08,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 335 [2023-11-19 07:58:08,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 115 transitions, 240 flow. Second operand has 6 states, 6 states have (on average 183.33333333333334) internal successors, (1100), 6 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:08,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:08,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 335 [2023-11-19 07:58:08,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:11,980 INFO L124 PetriNetUnfolderBase]: 10185/23060 cut-off events. [2023-11-19 07:58:11,980 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-11-19 07:58:12,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38515 conditions, 23060 events. 10185/23060 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 233864 event pairs, 3024 based on Foata normal form. 0/20406 useless extension candidates. Maximal degree in co-relation 38510. Up to 8420 conditions per place. [2023-11-19 07:58:12,150 INFO L140 encePairwiseOnDemand]: 326/335 looper letters, 142 selfloop transitions, 14 changer transitions 0/225 dead transitions. [2023-11-19 07:58:12,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 225 transitions, 772 flow [2023-11-19 07:58:12,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:58:12,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:58:12,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1249 transitions. [2023-11-19 07:58:12,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6213930348258706 [2023-11-19 07:58:12,156 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1249 transitions. [2023-11-19 07:58:12,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1249 transitions. [2023-11-19 07:58:12,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:12,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1249 transitions. [2023-11-19 07:58:12,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 208.16666666666666) internal successors, (1249), 6 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:12,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 335.0) internal successors, (2345), 7 states have internal predecessors, (2345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:12,169 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 335.0) internal successors, (2345), 7 states have internal predecessors, (2345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:12,169 INFO L175 Difference]: Start difference. First operand has 118 places, 115 transitions, 240 flow. Second operand 6 states and 1249 transitions. [2023-11-19 07:58:12,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 225 transitions, 772 flow [2023-11-19 07:58:12,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 225 transitions, 772 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:58:12,176 INFO L231 Difference]: Finished difference. Result has 128 places, 129 transitions, 342 flow [2023-11-19 07:58:12,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=342, PETRI_PLACES=128, PETRI_TRANSITIONS=129} [2023-11-19 07:58:12,178 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, -8 predicate places. [2023-11-19 07:58:12,178 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 129 transitions, 342 flow [2023-11-19 07:58:12,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.33333333333334) internal successors, (1100), 6 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:12,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:12,180 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 07:58:12,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:58:12,180 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2023-11-19 07:58:12,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:12,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1909065215, now seen corresponding path program 1 times [2023-11-19 07:58:12,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:12,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715928413] [2023-11-19 07:58:12,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:12,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:12,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:12,197 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:58:12,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:12,210 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:58:12,210 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:58:12,210 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (48 of 49 remaining) [2023-11-19 07:58:12,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (47 of 49 remaining) [2023-11-19 07:58:12,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (46 of 49 remaining) [2023-11-19 07:58:12,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (45 of 49 remaining) [2023-11-19 07:58:12,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (44 of 49 remaining) [2023-11-19 07:58:12,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (43 of 49 remaining) [2023-11-19 07:58:12,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (42 of 49 remaining) [2023-11-19 07:58:12,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (41 of 49 remaining) [2023-11-19 07:58:12,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (40 of 49 remaining) [2023-11-19 07:58:12,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (39 of 49 remaining) [2023-11-19 07:58:12,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (38 of 49 remaining) [2023-11-19 07:58:12,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (37 of 49 remaining) [2023-11-19 07:58:12,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (36 of 49 remaining) [2023-11-19 07:58:12,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (35 of 49 remaining) [2023-11-19 07:58:12,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (34 of 49 remaining) [2023-11-19 07:58:12,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (33 of 49 remaining) [2023-11-19 07:58:12,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (32 of 49 remaining) [2023-11-19 07:58:12,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (31 of 49 remaining) [2023-11-19 07:58:12,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (30 of 49 remaining) [2023-11-19 07:58:12,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (29 of 49 remaining) [2023-11-19 07:58:12,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (28 of 49 remaining) [2023-11-19 07:58:12,215 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (27 of 49 remaining) [2023-11-19 07:58:12,215 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (26 of 49 remaining) [2023-11-19 07:58:12,215 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (25 of 49 remaining) [2023-11-19 07:58:12,215 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (24 of 49 remaining) [2023-11-19 07:58:12,215 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 49 remaining) [2023-11-19 07:58:12,216 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 49 remaining) [2023-11-19 07:58:12,216 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 49 remaining) [2023-11-19 07:58:12,216 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 49 remaining) [2023-11-19 07:58:12,216 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (19 of 49 remaining) [2023-11-19 07:58:12,217 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (18 of 49 remaining) [2023-11-19 07:58:12,217 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (17 of 49 remaining) [2023-11-19 07:58:12,217 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (16 of 49 remaining) [2023-11-19 07:58:12,217 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (15 of 49 remaining) [2023-11-19 07:58:12,217 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (14 of 49 remaining) [2023-11-19 07:58:12,218 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (13 of 49 remaining) [2023-11-19 07:58:12,218 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (12 of 49 remaining) [2023-11-19 07:58:12,218 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 49 remaining) [2023-11-19 07:58:12,218 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 49 remaining) [2023-11-19 07:58:12,218 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 49 remaining) [2023-11-19 07:58:12,219 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 49 remaining) [2023-11-19 07:58:12,219 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 49 remaining) [2023-11-19 07:58:12,219 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (6 of 49 remaining) [2023-11-19 07:58:12,219 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (5 of 49 remaining) [2023-11-19 07:58:12,219 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (4 of 49 remaining) [2023-11-19 07:58:12,220 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (3 of 49 remaining) [2023-11-19 07:58:12,220 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (2 of 49 remaining) [2023-11-19 07:58:12,220 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (1 of 49 remaining) [2023-11-19 07:58:12,220 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (0 of 49 remaining) [2023-11-19 07:58:12,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:58:12,221 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-19 07:58:12,221 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:58:12,222 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 07:58:12,284 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:58:12,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 278 places, 288 transitions, 594 flow [2023-11-19 07:58:12,397 INFO L124 PetriNetUnfolderBase]: 32/544 cut-off events. [2023-11-19 07:58:12,397 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 07:58:12,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 557 conditions, 544 events. 32/544 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2657 event pairs, 0 based on Foata normal form. 0/424 useless extension candidates. Maximal degree in co-relation 399. Up to 8 conditions per place. [2023-11-19 07:58:12,407 INFO L82 GeneralOperation]: Start removeDead. Operand has 278 places, 288 transitions, 594 flow [2023-11-19 07:58:12,415 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 278 places, 288 transitions, 594 flow [2023-11-19 07:58:12,415 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:58:12,416 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 278 places, 288 transitions, 594 flow [2023-11-19 07:58:12,416 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 278 places, 288 transitions, 594 flow [2023-11-19 07:58:12,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 278 places, 288 transitions, 594 flow [2023-11-19 07:58:12,624 INFO L124 PetriNetUnfolderBase]: 32/544 cut-off events. [2023-11-19 07:58:12,624 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 07:58:12,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 557 conditions, 544 events. 32/544 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2657 event pairs, 0 based on Foata normal form. 0/424 useless extension candidates. Maximal degree in co-relation 399. Up to 8 conditions per place. [2023-11-19 07:58:12,661 INFO L119 LiptonReduction]: Number of co-enabled transitions 55800 [2023-11-19 07:58:14,613 INFO L134 LiptonReduction]: Checked pairs total: 290658 [2023-11-19 07:58:14,614 INFO L136 LiptonReduction]: Total number of compositions: 136 [2023-11-19 07:58:14,618 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:58:14,620 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@25440c16, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:58:14,620 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2023-11-19 07:58:14,622 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:58:14,622 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-11-19 07:58:14,623 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:58:14,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:14,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:58:14,623 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2023-11-19 07:58:14,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:14,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1572528, now seen corresponding path program 1 times [2023-11-19 07:58:14,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:14,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132326656] [2023-11-19 07:58:14,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:14,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:14,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:14,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:14,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:14,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132326656] [2023-11-19 07:58:14,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132326656] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:14,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:14,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:58:14,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833959549] [2023-11-19 07:58:14,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:14,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:58:14,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:14,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:58:14,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:58:14,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 424 [2023-11-19 07:58:14,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 187 transitions, 392 flow. Second operand has 2 states, 2 states have (on average 245.5) internal successors, (491), 2 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:14,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:14,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 424 [2023-11-19 07:58:14,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:30,756 INFO L124 PetriNetUnfolderBase]: 71450/128960 cut-off events. [2023-11-19 07:58:30,756 INFO L125 PetriNetUnfolderBase]: For 958/958 co-relation queries the response was YES. [2023-11-19 07:58:31,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225534 conditions, 128960 events. 71450/128960 cut-off events. For 958/958 co-relation queries the response was YES. Maximal size of possible extension queue 3026. Compared 1343775 event pairs, 63624 based on Foata normal form. 21593/134005 useless extension candidates. Maximal degree in co-relation 86498. Up to 95956 conditions per place. [2023-11-19 07:58:31,891 INFO L140 encePairwiseOnDemand]: 393/424 looper letters, 53 selfloop transitions, 0 changer transitions 0/152 dead transitions. [2023-11-19 07:58:31,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 152 transitions, 428 flow [2023-11-19 07:58:31,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:58:31,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:58:31,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 572 transitions. [2023-11-19 07:58:31,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6745283018867925 [2023-11-19 07:58:31,894 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 572 transitions. [2023-11-19 07:58:31,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 572 transitions. [2023-11-19 07:58:31,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:31,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 572 transitions. [2023-11-19 07:58:31,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 286.0) internal successors, (572), 2 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:31,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 424.0) internal successors, (1272), 3 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:31,902 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 424.0) internal successors, (1272), 3 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:31,903 INFO L175 Difference]: Start difference. First operand has 179 places, 187 transitions, 392 flow. Second operand 2 states and 572 transitions. [2023-11-19 07:58:31,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 152 transitions, 428 flow [2023-11-19 07:58:31,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 152 transitions, 426 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-19 07:58:31,912 INFO L231 Difference]: Finished difference. Result has 156 places, 152 transitions, 320 flow [2023-11-19 07:58:31,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=424, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=320, PETRI_PLACES=156, PETRI_TRANSITIONS=152} [2023-11-19 07:58:31,918 INFO L281 CegarLoopForPetriNet]: 179 programPoint places, -23 predicate places. [2023-11-19 07:58:31,918 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 152 transitions, 320 flow [2023-11-19 07:58:31,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 245.5) internal successors, (491), 2 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:31,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:31,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:31,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:58:31,919 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2023-11-19 07:58:31,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:31,920 INFO L85 PathProgramCache]: Analyzing trace with hash 839707452, now seen corresponding path program 1 times [2023-11-19 07:58:31,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:31,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078878522] [2023-11-19 07:58:31,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:31,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:31,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:32,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:32,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:32,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078878522] [2023-11-19 07:58:32,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078878522] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:32,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:32,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:58:32,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835647616] [2023-11-19 07:58:32,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:32,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:58:32,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:32,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:58:32,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:58:32,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 424 [2023-11-19 07:58:32,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 152 transitions, 320 flow. Second operand has 6 states, 6 states have (on average 235.33333333333334) internal successors, (1412), 6 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:32,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:32,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 424 [2023-11-19 07:58:32,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand