./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/09_fmaxsym.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/09_fmaxsym.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB --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 2ce2a912f26c96a7a9e9698d6a341c03f1dcacccb179d06c2396dd9f137bcbd1 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:47:42,172 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:47:42,234 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-28 02:47:42,243 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:47:42,243 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:47:42,284 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:47:42,286 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:47:42,286 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:47:42,286 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:47:42,287 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:47:42,287 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:47:42,287 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:47:42,287 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:47:42,287 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:47:42,288 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:47:42,288 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:47:42,288 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:47:42,288 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:47:42,288 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:47:42,288 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:47:42,289 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:47:42,289 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:47:42,289 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-28 02:47:42,289 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:47:42,289 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:47:42,289 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:47:42,290 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:47:42,290 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:47:42,290 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:47:42,290 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:47:42,290 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:47:42,290 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:47:42,291 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:47:42,291 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:47:42,291 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:47:42,291 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:47:42,291 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:47:42,291 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:47:42,291 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:47:42,292 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:47:42,292 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:47:42,292 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:47:42,292 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:47:42,292 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:47:42,292 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:47:42,292 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:47:42,293 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 2ce2a912f26c96a7a9e9698d6a341c03f1dcacccb179d06c2396dd9f137bcbd1 [2024-11-28 02:47:42,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:47:42,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:47:42,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:47:42,600 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:47:42,600 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:47:42,602 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread-ext/09_fmaxsym.i [2024-11-28 02:47:45,663 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/data/a22632107/9ae842fffc884c29b3a0753e832cc7b0/FLAG8052c1445 [2024-11-28 02:47:46,039 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:47:46,040 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/sv-benchmarks/c/pthread-ext/09_fmaxsym.i [2024-11-28 02:47:46,055 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/data/a22632107/9ae842fffc884c29b3a0753e832cc7b0/FLAG8052c1445 [2024-11-28 02:47:46,079 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/data/a22632107/9ae842fffc884c29b3a0753e832cc7b0 [2024-11-28 02:47:46,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:47:46,084 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:47:46,087 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:47:46,087 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:47:46,095 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:47:46,100 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:47:46" (1/1) ... [2024-11-28 02:47:46,101 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ad82dda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:46, skipping insertion in model container [2024-11-28 02:47:46,101 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:47:46" (1/1) ... [2024-11-28 02:47:46,156 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:47:46,598 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:47:46,613 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:47:46,669 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:47:46,712 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:47:46,713 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:46 WrapperNode [2024-11-28 02:47:46,713 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:47:46,715 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:47:46,715 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:47:46,715 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:47:46,729 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:46" (1/1) ... [2024-11-28 02:47:46,748 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:46" (1/1) ... [2024-11-28 02:47:46,777 INFO L138 Inliner]: procedures = 164, calls = 29, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 109 [2024-11-28 02:47:46,780 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:47:46,781 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:47:46,781 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:47:46,781 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:47:46,790 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:46" (1/1) ... [2024-11-28 02:47:46,791 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:46" (1/1) ... [2024-11-28 02:47:46,795 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:46" (1/1) ... [2024-11-28 02:47:46,795 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:46" (1/1) ... [2024-11-28 02:47:46,813 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:46" (1/1) ... [2024-11-28 02:47:46,814 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:46" (1/1) ... [2024-11-28 02:47:46,825 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:46" (1/1) ... [2024-11-28 02:47:46,826 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:46" (1/1) ... [2024-11-28 02:47:46,827 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:46" (1/1) ... [2024-11-28 02:47:46,834 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:47:46,834 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:47:46,835 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:47:46,835 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:47:46,839 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:46" (1/1) ... [2024-11-28 02:47:46,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:47:46,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:47:46,881 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:47:46,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:47:46,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-28 02:47:46,922 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-28 02:47:46,922 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-28 02:47:46,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-28 02:47:46,923 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 02:47:46,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:47:46,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-28 02:47:46,923 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 02:47:46,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:47:46,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:47:46,925 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 02:47:47,046 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:47:47,049 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:47:47,417 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:47:47,418 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:47:47,445 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:47:47,445 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-28 02:47:47,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:47:47 BoogieIcfgContainer [2024-11-28 02:47:47,445 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:47:47,448 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:47:47,448 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:47:47,453 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:47:47,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:47:46" (1/3) ... [2024-11-28 02:47:47,454 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d5a65eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:47:47, skipping insertion in model container [2024-11-28 02:47:47,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:46" (2/3) ... [2024-11-28 02:47:47,455 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d5a65eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:47:47, skipping insertion in model container [2024-11-28 02:47:47,455 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:47:47" (3/3) ... [2024-11-28 02:47:47,456 INFO L128 eAbstractionObserver]: Analyzing ICFG 09_fmaxsym.i [2024-11-28 02:47:47,474 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:47:47,476 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 09_fmaxsym.i that has 2 procedures, 114 locations, 1 initial locations, 3 loop locations, and 5 error locations. [2024-11-28 02:47:47,476 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:47:47,593 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 02:47:47,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 123 transitions, 250 flow [2024-11-28 02:47:47,740 INFO L124 PetriNetUnfolderBase]: 10/131 cut-off events. [2024-11-28 02:47:47,745 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:47:47,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 131 events. 10/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 132 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 78. Up to 4 conditions per place. [2024-11-28 02:47:47,756 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 123 transitions, 250 flow [2024-11-28 02:47:47,764 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 123 transitions, 250 flow [2024-11-28 02:47:47,779 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:47:47,797 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;@770b5b2f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:47:47,798 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-28 02:47:47,829 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:47:47,829 INFO L124 PetriNetUnfolderBase]: 3/55 cut-off events. [2024-11-28 02:47:47,829 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:47:47,829 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:47:47,830 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:47,831 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-28 02:47:47,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:47,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1100579935, now seen corresponding path program 1 times [2024-11-28 02:47:47,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:47,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028657800] [2024-11-28 02:47:47,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:47,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:48,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:48,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:47:48,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:48,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028657800] [2024-11-28 02:47:48,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028657800] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:47:48,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:47:48,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:47:48,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45578174] [2024-11-28 02:47:48,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:47:48,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:47:48,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:49,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:47:49,017 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:47:49,358 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 123 [2024-11-28 02:47:49,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 123 transitions, 250 flow. Second operand has 6 states, 6 states have (on average 94.5) internal successors, (567), 6 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:47:49,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:47:49,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 123 [2024-11-28 02:47:49,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:47:49,450 INFO L124 PetriNetUnfolderBase]: 3/113 cut-off events. [2024-11-28 02:47:49,450 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 02:47:49,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 113 events. 3/113 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 79 event pairs, 0 based on Foata normal form. 15/119 useless extension candidates. Maximal degree in co-relation 75. Up to 16 conditions per place. [2024-11-28 02:47:49,452 INFO L140 encePairwiseOnDemand]: 110/123 looper letters, 15 selfloop transitions, 5 changer transitions 0/110 dead transitions. [2024-11-28 02:47:49,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 110 transitions, 264 flow [2024-11-28 02:47:49,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:47:49,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 02:47:49,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 586 transitions. [2024-11-28 02:47:49,470 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7940379403794038 [2024-11-28 02:47:49,472 INFO L175 Difference]: Start difference. First operand has 117 places, 123 transitions, 250 flow. Second operand 6 states and 586 transitions. [2024-11-28 02:47:49,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 110 transitions, 264 flow [2024-11-28 02:47:49,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 110 transitions, 264 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:47:49,482 INFO L231 Difference]: Finished difference. Result has 115 places, 110 transitions, 234 flow [2024-11-28 02:47:49,485 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=234, PETRI_PLACES=115, PETRI_TRANSITIONS=110} [2024-11-28 02:47:49,489 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, -2 predicate places. [2024-11-28 02:47:49,490 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 110 transitions, 234 flow [2024-11-28 02:47:49,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 94.5) internal successors, (567), 6 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:47:49,491 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:47:49,491 INFO L206 CegarLoopForPetriNet]: trace histogram [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] [2024-11-28 02:47:49,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:47:49,491 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-28 02:47:49,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:49,492 INFO L85 PathProgramCache]: Analyzing trace with hash 331560494, now seen corresponding path program 1 times [2024-11-28 02:47:49,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:49,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210735816] [2024-11-28 02:47:49,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:49,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:49,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:49,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:47:49,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:49,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210735816] [2024-11-28 02:47:49,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210735816] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:47:49,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:47:49,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:47:49,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667051135] [2024-11-28 02:47:49,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:47:49,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:47:49,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:49,583 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:47:49,584 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:47:49,617 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 123 [2024-11-28 02:47:49,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 110 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 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) [2024-11-28 02:47:49,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:47:49,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 123 [2024-11-28 02:47:49,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:47:49,680 INFO L124 PetriNetUnfolderBase]: 3/125 cut-off events. [2024-11-28 02:47:49,680 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-28 02:47:49,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 125 events. 3/125 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 72 event pairs, 0 based on Foata normal form. 1/118 useless extension candidates. Maximal degree in co-relation 90. Up to 11 conditions per place. [2024-11-28 02:47:49,683 INFO L140 encePairwiseOnDemand]: 120/123 looper letters, 9 selfloop transitions, 2 changer transitions 0/111 dead transitions. [2024-11-28 02:47:49,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 111 transitions, 260 flow [2024-11-28 02:47:49,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:47:49,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:47:49,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 324 transitions. [2024-11-28 02:47:49,687 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8780487804878049 [2024-11-28 02:47:49,687 INFO L175 Difference]: Start difference. First operand has 115 places, 110 transitions, 234 flow. Second operand 3 states and 324 transitions. [2024-11-28 02:47:49,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 111 transitions, 260 flow [2024-11-28 02:47:49,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 111 transitions, 248 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-28 02:47:49,692 INFO L231 Difference]: Finished difference. Result has 113 places, 111 transitions, 236 flow [2024-11-28 02:47:49,695 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=236, PETRI_PLACES=113, PETRI_TRANSITIONS=111} [2024-11-28 02:47:49,696 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, -4 predicate places. [2024-11-28 02:47:49,696 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 111 transitions, 236 flow [2024-11-28 02:47:49,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 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) [2024-11-28 02:47:49,697 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:47:49,697 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:49,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:47:49,697 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-28 02:47:49,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:49,700 INFO L85 PathProgramCache]: Analyzing trace with hash 83628525, now seen corresponding path program 1 times [2024-11-28 02:47:49,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:49,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329932106] [2024-11-28 02:47:49,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:49,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:49,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:47:49,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:49,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329932106] [2024-11-28 02:47:49,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329932106] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:47:49,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910255114] [2024-11-28 02:47:49,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:49,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:47:49,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:47:49,903 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:47:49,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:47:50,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:50,025 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:47:50,031 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:47:50,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:47:50,134 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:47:50,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:47:50,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910255114] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:47:50,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:47:50,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-28 02:47:50,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610982118] [2024-11-28 02:47:50,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:47:50,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:47:50,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:50,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:47:50,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:47:50,389 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 123 [2024-11-28 02:47:50,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 111 transitions, 236 flow. Second operand has 10 states, 10 states have (on average 102.9) internal successors, (1029), 10 states have internal predecessors, (1029), 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) [2024-11-28 02:47:50,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:47:50,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 123 [2024-11-28 02:47:50,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:47:50,531 INFO L124 PetriNetUnfolderBase]: 3/140 cut-off events. [2024-11-28 02:47:50,532 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 02:47:50,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 140 events. 3/140 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 2/134 useless extension candidates. Maximal degree in co-relation 125. Up to 11 conditions per place. [2024-11-28 02:47:50,534 INFO L140 encePairwiseOnDemand]: 117/123 looper letters, 13 selfloop transitions, 9 changer transitions 0/119 dead transitions. [2024-11-28 02:47:50,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 119 transitions, 298 flow [2024-11-28 02:47:50,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:47:50,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:47:50,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 933 transitions. [2024-11-28 02:47:50,540 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8428184281842819 [2024-11-28 02:47:50,540 INFO L175 Difference]: Start difference. First operand has 113 places, 111 transitions, 236 flow. Second operand 9 states and 933 transitions. [2024-11-28 02:47:50,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 119 transitions, 298 flow [2024-11-28 02:47:50,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 119 transitions, 296 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:47:50,548 INFO L231 Difference]: Finished difference. Result has 123 places, 117 transitions, 284 flow [2024-11-28 02:47:50,548 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=284, PETRI_PLACES=123, PETRI_TRANSITIONS=117} [2024-11-28 02:47:50,549 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 6 predicate places. [2024-11-28 02:47:50,549 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 117 transitions, 284 flow [2024-11-28 02:47:50,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 102.9) internal successors, (1029), 10 states have internal predecessors, (1029), 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) [2024-11-28 02:47:50,550 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:47:50,550 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 02:47:50,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 02:47:50,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:47:50,751 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-28 02:47:50,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:50,752 INFO L85 PathProgramCache]: Analyzing trace with hash -2034163827, now seen corresponding path program 2 times [2024-11-28 02:47:50,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:50,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304253175] [2024-11-28 02:47:50,753 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:47:50,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:50,809 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:47:50,809 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:47:51,076 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:47:51,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:51,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304253175] [2024-11-28 02:47:51,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304253175] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:47:51,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132506545] [2024-11-28 02:47:51,079 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:47:51,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:47:51,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:47:51,083 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:47:51,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:47:51,217 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:47:51,217 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:47:51,219 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:47:51,221 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:47:51,365 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:47:51,365 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:47:51,553 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:47:51,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132506545] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:47:51,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:47:51,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-28 02:47:51,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566895340] [2024-11-28 02:47:51,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:47:51,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 02:47:51,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:51,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 02:47:51,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:47:51,776 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 123 [2024-11-28 02:47:51,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 117 transitions, 284 flow. Second operand has 15 states, 15 states have (on average 103.06666666666666) internal successors, (1546), 15 states have internal predecessors, (1546), 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) [2024-11-28 02:47:51,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:47:51,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 123 [2024-11-28 02:47:51,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:47:52,029 INFO L124 PetriNetUnfolderBase]: 3/179 cut-off events. [2024-11-28 02:47:52,030 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-11-28 02:47:52,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 179 events. 3/179 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 3/174 useless extension candidates. Maximal degree in co-relation 185. Up to 11 conditions per place. [2024-11-28 02:47:52,031 INFO L140 encePairwiseOnDemand]: 117/123 looper letters, 16 selfloop transitions, 18 changer transitions 0/131 dead transitions. [2024-11-28 02:47:52,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 131 transitions, 426 flow [2024-11-28 02:47:52,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 02:47:52,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-28 02:47:52,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1855 transitions. [2024-11-28 02:47:52,037 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8378500451671184 [2024-11-28 02:47:52,037 INFO L175 Difference]: Start difference. First operand has 123 places, 117 transitions, 284 flow. Second operand 18 states and 1855 transitions. [2024-11-28 02:47:52,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 131 transitions, 426 flow [2024-11-28 02:47:52,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 131 transitions, 414 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-28 02:47:52,042 INFO L231 Difference]: Finished difference. Result has 143 places, 127 transitions, 384 flow [2024-11-28 02:47:52,042 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=384, PETRI_PLACES=143, PETRI_TRANSITIONS=127} [2024-11-28 02:47:52,043 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 26 predicate places. [2024-11-28 02:47:52,043 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 127 transitions, 384 flow [2024-11-28 02:47:52,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 103.06666666666666) internal successors, (1546), 15 states have internal predecessors, (1546), 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) [2024-11-28 02:47:52,044 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:47:52,046 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2024-11-28 02:47:52,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:47:52,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:47:52,251 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-28 02:47:52,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:52,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1971026254, now seen corresponding path program 3 times [2024-11-28 02:47:52,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:52,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437690929] [2024-11-28 02:47:52,255 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:47:52,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:52,385 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-28 02:47:52,386 INFO L230 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-28 02:47:52,386 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:47:52,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:47:52,470 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:47:52,470 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:47:52,471 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-11-28 02:47:52,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2024-11-28 02:47:52,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2024-11-28 02:47:52,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2024-11-28 02:47:52,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2024-11-28 02:47:52,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2024-11-28 02:47:52,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2024-11-28 02:47:52,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2024-11-28 02:47:52,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2024-11-28 02:47:52,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2024-11-28 02:47:52,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:47:52,476 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-11-28 02:47:52,479 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:47:52,479 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-28 02:47:52,531 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 02:47:52,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 192 transitions, 394 flow [2024-11-28 02:47:52,592 INFO L124 PetriNetUnfolderBase]: 17/210 cut-off events. [2024-11-28 02:47:52,592 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 02:47:52,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218 conditions, 210 events. 17/210 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 388 event pairs, 0 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 146. Up to 6 conditions per place. [2024-11-28 02:47:52,596 INFO L82 GeneralOperation]: Start removeDead. Operand has 182 places, 192 transitions, 394 flow [2024-11-28 02:47:52,600 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 182 places, 192 transitions, 394 flow [2024-11-28 02:47:52,601 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:47:52,601 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;@770b5b2f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:47:52,602 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-28 02:47:52,608 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:47:52,608 INFO L124 PetriNetUnfolderBase]: 3/55 cut-off events. [2024-11-28 02:47:52,608 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:47:52,609 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:47:52,609 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:52,609 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-28 02:47:52,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:52,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1879380705, now seen corresponding path program 1 times [2024-11-28 02:47:52,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:52,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066121801] [2024-11-28 02:47:52,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:52,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:52,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:53,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:47:53,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:53,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066121801] [2024-11-28 02:47:53,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066121801] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:47:53,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:47:53,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:47:53,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452785936] [2024-11-28 02:47:53,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:47:53,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:47:53,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:53,004 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:47:53,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:47:53,245 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 192 [2024-11-28 02:47:53,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 192 transitions, 394 flow. Second operand has 6 states, 6 states have (on average 149.5) internal successors, (897), 6 states have internal predecessors, (897), 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) [2024-11-28 02:47:53,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:47:53,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 192 [2024-11-28 02:47:53,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:47:53,490 INFO L124 PetriNetUnfolderBase]: 104/725 cut-off events. [2024-11-28 02:47:53,490 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-28 02:47:53,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 947 conditions, 725 events. 104/725 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3765 event pairs, 72 based on Foata normal form. 162/780 useless extension candidates. Maximal degree in co-relation 669. Up to 185 conditions per place. [2024-11-28 02:47:53,513 INFO L140 encePairwiseOnDemand]: 175/192 looper letters, 24 selfloop transitions, 5 changer transitions 0/173 dead transitions. [2024-11-28 02:47:53,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 173 transitions, 414 flow [2024-11-28 02:47:53,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:47:53,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 02:47:53,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 929 transitions. [2024-11-28 02:47:53,517 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8064236111111112 [2024-11-28 02:47:53,517 INFO L175 Difference]: Start difference. First operand has 182 places, 192 transitions, 394 flow. Second operand 6 states and 929 transitions. [2024-11-28 02:47:53,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 173 transitions, 414 flow [2024-11-28 02:47:53,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 173 transitions, 414 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:47:53,523 INFO L231 Difference]: Finished difference. Result has 178 places, 173 transitions, 366 flow [2024-11-28 02:47:53,524 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=366, PETRI_PLACES=178, PETRI_TRANSITIONS=173} [2024-11-28 02:47:53,524 INFO L279 CegarLoopForPetriNet]: 182 programPoint places, -4 predicate places. [2024-11-28 02:47:53,525 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 173 transitions, 366 flow [2024-11-28 02:47:53,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 149.5) internal successors, (897), 6 states have internal predecessors, (897), 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) [2024-11-28 02:47:53,525 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:47:53,526 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:53,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:47:53,526 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-28 02:47:53,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:53,530 INFO L85 PathProgramCache]: Analyzing trace with hash -730551734, now seen corresponding path program 1 times [2024-11-28 02:47:53,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:53,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586870030] [2024-11-28 02:47:53,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:53,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:53,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:53,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:47:53,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:53,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586870030] [2024-11-28 02:47:53,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586870030] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:47:53,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:47:53,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:47:53,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416256426] [2024-11-28 02:47:53,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:47:53,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:47:53,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:53,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:47:53,577 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:47:53,609 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 192 [2024-11-28 02:47:53,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 173 transitions, 366 flow. Second operand has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 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) [2024-11-28 02:47:53,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:47:53,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 192 [2024-11-28 02:47:53,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:47:53,748 INFO L124 PetriNetUnfolderBase]: 33/489 cut-off events. [2024-11-28 02:47:53,750 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-11-28 02:47:53,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 577 conditions, 489 events. 33/489 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1980 event pairs, 20 based on Foata normal form. 1/441 useless extension candidates. Maximal degree in co-relation 514. Up to 56 conditions per place. [2024-11-28 02:47:53,754 INFO L140 encePairwiseOnDemand]: 189/192 looper letters, 14 selfloop transitions, 2 changer transitions 0/174 dead transitions. [2024-11-28 02:47:53,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 174 transitions, 402 flow [2024-11-28 02:47:53,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:47:53,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:47:53,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 506 transitions. [2024-11-28 02:47:53,756 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8784722222222222 [2024-11-28 02:47:53,756 INFO L175 Difference]: Start difference. First operand has 178 places, 173 transitions, 366 flow. Second operand 3 states and 506 transitions. [2024-11-28 02:47:53,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 174 transitions, 402 flow [2024-11-28 02:47:53,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 174 transitions, 390 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-28 02:47:53,762 INFO L231 Difference]: Finished difference. Result has 176 places, 174 transitions, 368 flow [2024-11-28 02:47:53,762 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=368, PETRI_PLACES=176, PETRI_TRANSITIONS=174} [2024-11-28 02:47:53,763 INFO L279 CegarLoopForPetriNet]: 182 programPoint places, -6 predicate places. [2024-11-28 02:47:53,765 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 174 transitions, 368 flow [2024-11-28 02:47:53,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 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) [2024-11-28 02:47:53,766 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:47:53,766 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:53,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:47:53,766 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-28 02:47:53,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:53,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1993919369, now seen corresponding path program 1 times [2024-11-28 02:47:53,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:53,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995993912] [2024-11-28 02:47:53,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:53,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:53,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:47:53,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:53,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995993912] [2024-11-28 02:47:53,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995993912] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:47:53,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973211946] [2024-11-28 02:47:53,867 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:53,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:47:53,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:47:53,873 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:47:53,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:47:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:54,001 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:47:54,003 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:47:54,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:47:54,047 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:47:54,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:47:54,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973211946] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:47:54,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:47:54,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-28 02:47:54,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905810700] [2024-11-28 02:47:54,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:47:54,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:47:54,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:54,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:47:54,106 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:47:54,220 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 192 [2024-11-28 02:47:54,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 174 transitions, 368 flow. Second operand has 10 states, 10 states have (on average 162.0) internal successors, (1620), 10 states have internal predecessors, (1620), 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) [2024-11-28 02:47:54,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:47:54,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 192 [2024-11-28 02:47:54,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:47:54,443 INFO L124 PetriNetUnfolderBase]: 33/504 cut-off events. [2024-11-28 02:47:54,444 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-11-28 02:47:54,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 600 conditions, 504 events. 33/504 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1951 event pairs, 20 based on Foata normal form. 2/457 useless extension candidates. Maximal degree in co-relation 549. Up to 56 conditions per place. [2024-11-28 02:47:54,448 INFO L140 encePairwiseOnDemand]: 186/192 looper letters, 18 selfloop transitions, 9 changer transitions 0/182 dead transitions. [2024-11-28 02:47:54,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 182 transitions, 440 flow [2024-11-28 02:47:54,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:47:54,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:47:54,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1469 transitions. [2024-11-28 02:47:54,454 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8501157407407407 [2024-11-28 02:47:54,454 INFO L175 Difference]: Start difference. First operand has 176 places, 174 transitions, 368 flow. Second operand 9 states and 1469 transitions. [2024-11-28 02:47:54,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 182 transitions, 440 flow [2024-11-28 02:47:54,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 182 transitions, 438 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:47:54,460 INFO L231 Difference]: Finished difference. Result has 186 places, 180 transitions, 416 flow [2024-11-28 02:47:54,460 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=416, PETRI_PLACES=186, PETRI_TRANSITIONS=180} [2024-11-28 02:47:54,461 INFO L279 CegarLoopForPetriNet]: 182 programPoint places, 4 predicate places. [2024-11-28 02:47:54,462 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 180 transitions, 416 flow [2024-11-28 02:47:54,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 162.0) internal successors, (1620), 10 states have internal predecessors, (1620), 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) [2024-11-28 02:47:54,464 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:47:54,464 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:54,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:47:54,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:47:54,665 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-28 02:47:54,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:54,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1057417513, now seen corresponding path program 2 times [2024-11-28 02:47:54,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:54,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437239597] [2024-11-28 02:47:54,667 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:47:54,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:54,713 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:47:54,713 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:47:54,965 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:47:54,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:54,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437239597] [2024-11-28 02:47:54,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437239597] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:47:54,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038393536] [2024-11-28 02:47:54,966 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:47:54,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:47:54,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:47:54,968 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:47:54,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:47:55,120 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:47:55,120 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:47:55,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:47:55,124 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:47:55,240 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:47:55,241 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:47:55,413 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:47:55,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038393536] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:47:55,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:47:55,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-28 02:47:55,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616813272] [2024-11-28 02:47:55,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:47:55,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 02:47:55,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:55,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 02:47:55,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:47:55,574 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 192 [2024-11-28 02:47:55,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 180 transitions, 416 flow. Second operand has 15 states, 15 states have (on average 162.13333333333333) internal successors, (2432), 15 states have internal predecessors, (2432), 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) [2024-11-28 02:47:55,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:47:55,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 192 [2024-11-28 02:47:55,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:47:55,927 INFO L124 PetriNetUnfolderBase]: 33/543 cut-off events. [2024-11-28 02:47:55,927 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-11-28 02:47:55,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 693 conditions, 543 events. 33/543 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1965 event pairs, 20 based on Foata normal form. 3/497 useless extension candidates. Maximal degree in co-relation 511. Up to 56 conditions per place. [2024-11-28 02:47:55,931 INFO L140 encePairwiseOnDemand]: 186/192 looper letters, 21 selfloop transitions, 18 changer transitions 0/194 dead transitions. [2024-11-28 02:47:55,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 194 transitions, 568 flow [2024-11-28 02:47:55,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 02:47:55,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-28 02:47:55,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2922 transitions. [2024-11-28 02:47:55,939 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8454861111111112 [2024-11-28 02:47:55,939 INFO L175 Difference]: Start difference. First operand has 186 places, 180 transitions, 416 flow. Second operand 18 states and 2922 transitions. [2024-11-28 02:47:55,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 194 transitions, 568 flow [2024-11-28 02:47:55,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 194 transitions, 556 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-28 02:47:55,944 INFO L231 Difference]: Finished difference. Result has 206 places, 190 transitions, 516 flow [2024-11-28 02:47:55,945 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=516, PETRI_PLACES=206, PETRI_TRANSITIONS=190} [2024-11-28 02:47:55,945 INFO L279 CegarLoopForPetriNet]: 182 programPoint places, 24 predicate places. [2024-11-28 02:47:55,945 INFO L471 AbstractCegarLoop]: Abstraction has has 206 places, 190 transitions, 516 flow [2024-11-28 02:47:55,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 162.13333333333333) internal successors, (2432), 15 states have internal predecessors, (2432), 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) [2024-11-28 02:47:55,947 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:47:55,947 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:55,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 02:47:56,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:47:56,152 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-28 02:47:56,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:56,153 INFO L85 PathProgramCache]: Analyzing trace with hash 396344682, now seen corresponding path program 3 times [2024-11-28 02:47:56,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:56,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903644014] [2024-11-28 02:47:56,153 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:47:56,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:56,239 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-28 02:47:56,239 INFO L230 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-28 02:47:56,239 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:47:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:47:56,292 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:47:56,294 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:47:56,294 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2024-11-28 02:47:56,294 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2024-11-28 02:47:56,294 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2024-11-28 02:47:56,294 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2024-11-28 02:47:56,295 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2024-11-28 02:47:56,295 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2024-11-28 02:47:56,295 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2024-11-28 02:47:56,295 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 14 remaining) [2024-11-28 02:47:56,295 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2024-11-28 02:47:56,296 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining) [2024-11-28 02:47:56,296 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2024-11-28 02:47:56,296 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2024-11-28 02:47:56,296 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2024-11-28 02:47:56,296 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2024-11-28 02:47:56,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:47:56,297 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-11-28 02:47:56,298 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:47:56,298 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-28 02:47:56,369 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 02:47:56,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 247 places, 261 transitions, 540 flow [2024-11-28 02:47:56,425 INFO L124 PetriNetUnfolderBase]: 24/289 cut-off events. [2024-11-28 02:47:56,425 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-28 02:47:56,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 289 events. 24/289 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 754 event pairs, 0 based on Foata normal form. 0/248 useless extension candidates. Maximal degree in co-relation 214. Up to 8 conditions per place. [2024-11-28 02:47:56,429 INFO L82 GeneralOperation]: Start removeDead. Operand has 247 places, 261 transitions, 540 flow [2024-11-28 02:47:56,435 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 247 places, 261 transitions, 540 flow [2024-11-28 02:47:56,436 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:47:56,436 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;@770b5b2f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:47:56,437 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-28 02:47:56,444 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:47:56,444 INFO L124 PetriNetUnfolderBase]: 3/55 cut-off events. [2024-11-28 02:47:56,444 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:47:56,444 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:47:56,444 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:56,445 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-28 02:47:56,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:56,445 INFO L85 PathProgramCache]: Analyzing trace with hash 914839428, now seen corresponding path program 1 times [2024-11-28 02:47:56,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:56,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063267762] [2024-11-28 02:47:56,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:56,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:56,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:56,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:47:56,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:56,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063267762] [2024-11-28 02:47:56,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063267762] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:47:56,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:47:56,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:47:56,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269586058] [2024-11-28 02:47:56,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:47:56,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:47:56,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:56,726 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:47:56,726 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:47:57,030 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 261 [2024-11-28 02:47:57,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 261 transitions, 540 flow. Second operand has 6 states, 6 states have (on average 204.5) internal successors, (1227), 6 states have internal predecessors, (1227), 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) [2024-11-28 02:47:57,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:47:57,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 261 [2024-11-28 02:47:57,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:47:58,625 INFO L124 PetriNetUnfolderBase]: 1746/6791 cut-off events. [2024-11-28 02:47:58,626 INFO L125 PetriNetUnfolderBase]: For 526/526 co-relation queries the response was YES. [2024-11-28 02:47:58,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9602 conditions, 6791 events. 1746/6791 cut-off events. For 526/526 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 67028 event pairs, 1368 based on Foata normal form. 1869/7588 useless extension candidates. Maximal degree in co-relation 6429. Up to 2449 conditions per place. [2024-11-28 02:47:58,697 INFO L140 encePairwiseOnDemand]: 240/261 looper letters, 33 selfloop transitions, 5 changer transitions 0/236 dead transitions. [2024-11-28 02:47:58,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 236 transitions, 566 flow [2024-11-28 02:47:58,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:47:58,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 02:47:58,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1272 transitions. [2024-11-28 02:47:58,701 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8122605363984674 [2024-11-28 02:47:58,701 INFO L175 Difference]: Start difference. First operand has 247 places, 261 transitions, 540 flow. Second operand 6 states and 1272 transitions. [2024-11-28 02:47:58,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 236 transitions, 566 flow [2024-11-28 02:47:58,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 236 transitions, 564 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-28 02:47:58,706 INFO L231 Difference]: Finished difference. Result has 241 places, 236 transitions, 498 flow [2024-11-28 02:47:58,706 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=498, PETRI_PLACES=241, PETRI_TRANSITIONS=236} [2024-11-28 02:47:58,708 INFO L279 CegarLoopForPetriNet]: 247 programPoint places, -6 predicate places. [2024-11-28 02:47:58,708 INFO L471 AbstractCegarLoop]: Abstraction has has 241 places, 236 transitions, 498 flow [2024-11-28 02:47:58,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 204.5) internal successors, (1227), 6 states have internal predecessors, (1227), 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) [2024-11-28 02:47:58,710 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:47:58,710 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:58,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 02:47:58,710 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-28 02:47:58,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:58,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1059476431, now seen corresponding path program 1 times [2024-11-28 02:47:58,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:58,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299057389] [2024-11-28 02:47:58,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:58,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:58,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:47:58,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:58,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299057389] [2024-11-28 02:47:58,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299057389] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:47:58,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:47:58,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:47:58,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023780858] [2024-11-28 02:47:58,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:47:58,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:47:58,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:58,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:47:58,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:47:58,781 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 261 [2024-11-28 02:47:58,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 236 transitions, 498 flow. Second operand has 3 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 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) [2024-11-28 02:47:58,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:47:58,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 261 [2024-11-28 02:47:58,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:47:59,285 INFO L124 PetriNetUnfolderBase]: 283/2409 cut-off events. [2024-11-28 02:47:59,285 INFO L125 PetriNetUnfolderBase]: For 168/168 co-relation queries the response was YES. [2024-11-28 02:47:59,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2898 conditions, 2409 events. 283/2409 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 19635 event pairs, 220 based on Foata normal form. 1/2155 useless extension candidates. Maximal degree in co-relation 2834. Up to 381 conditions per place. [2024-11-28 02:47:59,322 INFO L140 encePairwiseOnDemand]: 258/261 looper letters, 19 selfloop transitions, 2 changer transitions 0/237 dead transitions. [2024-11-28 02:47:59,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 237 transitions, 544 flow [2024-11-28 02:47:59,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:47:59,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:47:59,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 688 transitions. [2024-11-28 02:47:59,325 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8786717752234994 [2024-11-28 02:47:59,325 INFO L175 Difference]: Start difference. First operand has 241 places, 236 transitions, 498 flow. Second operand 3 states and 688 transitions. [2024-11-28 02:47:59,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 237 transitions, 544 flow [2024-11-28 02:47:59,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 237 transitions, 532 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-28 02:47:59,330 INFO L231 Difference]: Finished difference. Result has 239 places, 237 transitions, 500 flow [2024-11-28 02:47:59,331 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=500, PETRI_PLACES=239, PETRI_TRANSITIONS=237} [2024-11-28 02:47:59,331 INFO L279 CegarLoopForPetriNet]: 247 programPoint places, -8 predicate places. [2024-11-28 02:47:59,333 INFO L471 AbstractCegarLoop]: Abstraction has has 239 places, 237 transitions, 500 flow [2024-11-28 02:47:59,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 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) [2024-11-28 02:47:59,333 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:47:59,333 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:59,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:47:59,334 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-28 02:47:59,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:59,334 INFO L85 PathProgramCache]: Analyzing trace with hash -2055103533, now seen corresponding path program 1 times [2024-11-28 02:47:59,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:59,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021868120] [2024-11-28 02:47:59,334 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:59,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:59,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:59,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:47:59,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:59,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021868120] [2024-11-28 02:47:59,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021868120] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:47:59,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288362363] [2024-11-28 02:47:59,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:59,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:47:59,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:47:59,440 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:47:59,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:47:59,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:59,559 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:47:59,561 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:47:59,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:47:59,603 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:47:59,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:47:59,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288362363] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:47:59,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:47:59,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-28 02:47:59,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613384252] [2024-11-28 02:47:59,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:47:59,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:47:59,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:59,665 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:47:59,666 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:47:59,771 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 261 [2024-11-28 02:47:59,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 237 transitions, 500 flow. Second operand has 10 states, 10 states have (on average 221.1) internal successors, (2211), 10 states have internal predecessors, (2211), 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) [2024-11-28 02:47:59,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:47:59,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 261 [2024-11-28 02:47:59,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:48:00,420 INFO L124 PetriNetUnfolderBase]: 283/2424 cut-off events. [2024-11-28 02:48:00,420 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2024-11-28 02:48:00,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2921 conditions, 2424 events. 283/2424 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 19604 event pairs, 220 based on Foata normal form. 2/2171 useless extension candidates. Maximal degree in co-relation 2869. Up to 381 conditions per place. [2024-11-28 02:48:00,447 INFO L140 encePairwiseOnDemand]: 255/261 looper letters, 23 selfloop transitions, 9 changer transitions 0/245 dead transitions. [2024-11-28 02:48:00,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 245 transitions, 582 flow [2024-11-28 02:48:00,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:48:00,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:48:00,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2005 transitions. [2024-11-28 02:48:00,454 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8535547041294168 [2024-11-28 02:48:00,454 INFO L175 Difference]: Start difference. First operand has 239 places, 237 transitions, 500 flow. Second operand 9 states and 2005 transitions. [2024-11-28 02:48:00,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 245 transitions, 582 flow [2024-11-28 02:48:00,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 245 transitions, 580 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:48:00,461 INFO L231 Difference]: Finished difference. Result has 249 places, 243 transitions, 548 flow [2024-11-28 02:48:00,462 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=548, PETRI_PLACES=249, PETRI_TRANSITIONS=243} [2024-11-28 02:48:00,463 INFO L279 CegarLoopForPetriNet]: 247 programPoint places, 2 predicate places. [2024-11-28 02:48:00,463 INFO L471 AbstractCegarLoop]: Abstraction has has 249 places, 243 transitions, 548 flow [2024-11-28 02:48:00,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 221.1) internal successors, (2211), 10 states have internal predecessors, (2211), 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) [2024-11-28 02:48:00,465 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:48:00,465 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:00,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 02:48:00,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:48:00,666 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-28 02:48:00,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:00,667 INFO L85 PathProgramCache]: Analyzing trace with hash -3668653, now seen corresponding path program 2 times [2024-11-28 02:48:00,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:00,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529510974] [2024-11-28 02:48:00,667 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:48:00,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:00,699 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:48:00,700 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:48:00,911 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:48:00,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:00,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529510974] [2024-11-28 02:48:00,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529510974] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:48:00,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064910229] [2024-11-28 02:48:00,912 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:48:00,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:48:00,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:48:00,915 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:48:00,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:48:01,061 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:48:01,061 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:48:01,063 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:48:01,067 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:48:01,188 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:48:01,189 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:48:01,371 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:48:01,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064910229] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:48:01,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:48:01,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-28 02:48:01,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833839177] [2024-11-28 02:48:01,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:48:01,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 02:48:01,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:01,374 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 02:48:01,374 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:48:01,531 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 261 [2024-11-28 02:48:01,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 243 transitions, 548 flow. Second operand has 15 states, 15 states have (on average 221.2) internal successors, (3318), 15 states have internal predecessors, (3318), 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) [2024-11-28 02:48:01,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:48:01,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 261 [2024-11-28 02:48:01,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:48:02,479 INFO L124 PetriNetUnfolderBase]: 283/2463 cut-off events. [2024-11-28 02:48:02,480 INFO L125 PetriNetUnfolderBase]: For 189/189 co-relation queries the response was YES. [2024-11-28 02:48:02,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3014 conditions, 2463 events. 283/2463 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 19712 event pairs, 220 based on Foata normal form. 3/2211 useless extension candidates. Maximal degree in co-relation 2831. Up to 381 conditions per place. [2024-11-28 02:48:02,500 INFO L140 encePairwiseOnDemand]: 255/261 looper letters, 26 selfloop transitions, 18 changer transitions 0/257 dead transitions. [2024-11-28 02:48:02,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 257 transitions, 710 flow [2024-11-28 02:48:02,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 02:48:02,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-28 02:48:02,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3989 transitions. [2024-11-28 02:48:02,511 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8490847169008089 [2024-11-28 02:48:02,511 INFO L175 Difference]: Start difference. First operand has 249 places, 243 transitions, 548 flow. Second operand 18 states and 3989 transitions. [2024-11-28 02:48:02,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 257 transitions, 710 flow [2024-11-28 02:48:02,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 257 transitions, 698 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-28 02:48:02,519 INFO L231 Difference]: Finished difference. Result has 269 places, 253 transitions, 648 flow [2024-11-28 02:48:02,520 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=648, PETRI_PLACES=269, PETRI_TRANSITIONS=253} [2024-11-28 02:48:02,521 INFO L279 CegarLoopForPetriNet]: 247 programPoint places, 22 predicate places. [2024-11-28 02:48:02,521 INFO L471 AbstractCegarLoop]: Abstraction has has 269 places, 253 transitions, 648 flow [2024-11-28 02:48:02,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 221.2) internal successors, (3318), 15 states have internal predecessors, (3318), 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) [2024-11-28 02:48:02,523 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:48:02,523 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:02,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 02:48:02,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 02:48:02,724 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-28 02:48:02,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:02,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1526818639, now seen corresponding path program 3 times [2024-11-28 02:48:02,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:02,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595881722] [2024-11-28 02:48:02,725 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:48:02,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:02,799 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-28 02:48:02,799 INFO L230 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-28 02:48:02,799 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:48:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:48:02,859 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:48:02,859 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:48:02,859 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2024-11-28 02:48:02,859 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2024-11-28 02:48:02,859 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2024-11-28 02:48:02,859 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2024-11-28 02:48:02,859 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2024-11-28 02:48:02,859 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2024-11-28 02:48:02,860 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2024-11-28 02:48:02,860 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2024-11-28 02:48:02,860 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2024-11-28 02:48:02,860 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2024-11-28 02:48:02,860 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2024-11-28 02:48:02,860 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2024-11-28 02:48:02,860 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2024-11-28 02:48:02,860 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2024-11-28 02:48:02,860 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2024-11-28 02:48:02,860 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2024-11-28 02:48:02,861 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2024-11-28 02:48:02,861 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2024-11-28 02:48:02,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 02:48:02,861 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-11-28 02:48:02,861 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:48:02,862 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-28 02:48:02,926 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 02:48:02,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 312 places, 330 transitions, 688 flow [2024-11-28 02:48:02,995 INFO L124 PetriNetUnfolderBase]: 31/368 cut-off events. [2024-11-28 02:48:02,995 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-28 02:48:03,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 387 conditions, 368 events. 31/368 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1176 event pairs, 0 based on Foata normal form. 0/315 useless extension candidates. Maximal degree in co-relation 297. Up to 10 conditions per place. [2024-11-28 02:48:03,000 INFO L82 GeneralOperation]: Start removeDead. Operand has 312 places, 330 transitions, 688 flow [2024-11-28 02:48:03,004 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 312 places, 330 transitions, 688 flow [2024-11-28 02:48:03,005 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:48:03,005 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;@770b5b2f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:48:03,006 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-11-28 02:48:03,010 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:48:03,010 INFO L124 PetriNetUnfolderBase]: 3/55 cut-off events. [2024-11-28 02:48:03,010 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:48:03,011 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:48:03,011 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:03,011 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-28 02:48:03,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:03,012 INFO L85 PathProgramCache]: Analyzing trace with hash 893305742, now seen corresponding path program 1 times [2024-11-28 02:48:03,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:03,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959111242] [2024-11-28 02:48:03,012 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:03,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:03,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:03,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:48:03,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:03,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959111242] [2024-11-28 02:48:03,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959111242] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:03,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:03,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:48:03,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027102497] [2024-11-28 02:48:03,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:03,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:48:03,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:03,261 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:48:03,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:48:03,580 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 330 [2024-11-28 02:48:03,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 330 transitions, 688 flow. Second operand has 6 states, 6 states have (on average 259.5) internal successors, (1557), 6 states have internal predecessors, (1557), 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) [2024-11-28 02:48:03,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:48:03,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 330 [2024-11-28 02:48:03,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:48:14,684 INFO L124 PetriNetUnfolderBase]: 23093/67604 cut-off events. [2024-11-28 02:48:14,684 INFO L125 PetriNetUnfolderBase]: For 7852/7852 co-relation queries the response was YES. [2024-11-28 02:48:15,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101026 conditions, 67604 events. 23093/67604 cut-off events. For 7852/7852 co-relation queries the response was YES. Maximal size of possible extension queue 1849. Compared 896943 event pairs, 18864 based on Foata normal form. 20945/78639 useless extension candidates. Maximal degree in co-relation 60573. Up to 29414 conditions per place. [2024-11-28 02:48:15,495 INFO L140 encePairwiseOnDemand]: 305/330 looper letters, 42 selfloop transitions, 5 changer transitions 0/299 dead transitions. [2024-11-28 02:48:15,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 299 transitions, 720 flow [2024-11-28 02:48:15,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:48:15,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 02:48:15,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1615 transitions. [2024-11-28 02:48:15,500 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8156565656565656 [2024-11-28 02:48:15,500 INFO L175 Difference]: Start difference. First operand has 312 places, 330 transitions, 688 flow. Second operand 6 states and 1615 transitions. [2024-11-28 02:48:15,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 299 transitions, 720 flow [2024-11-28 02:48:15,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 299 transitions, 714 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-28 02:48:15,513 INFO L231 Difference]: Finished difference. Result has 304 places, 299 transitions, 630 flow [2024-11-28 02:48:15,514 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=630, PETRI_PLACES=304, PETRI_TRANSITIONS=299} [2024-11-28 02:48:15,515 INFO L279 CegarLoopForPetriNet]: 312 programPoint places, -8 predicate places. [2024-11-28 02:48:15,515 INFO L471 AbstractCegarLoop]: Abstraction has has 304 places, 299 transitions, 630 flow [2024-11-28 02:48:15,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 259.5) internal successors, (1557), 6 states have internal predecessors, (1557), 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) [2024-11-28 02:48:15,516 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:48:15,516 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:15,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 02:48:15,516 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-28 02:48:15,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:15,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1877488285, now seen corresponding path program 1 times [2024-11-28 02:48:15,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:15,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940837538] [2024-11-28 02:48:15,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:15,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:15,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:15,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:48:15,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:15,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940837538] [2024-11-28 02:48:15,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940837538] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:15,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:15,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:48:15,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235470001] [2024-11-28 02:48:15,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:15,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:48:15,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:15,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:48:15,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:48:15,588 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 330 [2024-11-28 02:48:15,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 299 transitions, 630 flow. Second operand has 3 states, 3 states have (on average 283.6666666666667) internal successors, (851), 3 states have internal predecessors, (851), 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) [2024-11-28 02:48:15,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:48:15,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 330 [2024-11-28 02:48:15,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:48:18,028 INFO L124 PetriNetUnfolderBase]: 2033/12509 cut-off events. [2024-11-28 02:48:18,028 INFO L125 PetriNetUnfolderBase]: For 1218/1218 co-relation queries the response was YES. [2024-11-28 02:48:18,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15499 conditions, 12509 events. 2033/12509 cut-off events. For 1218/1218 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 147485 event pairs, 1720 based on Foata normal form. 1/11224 useless extension candidates. Maximal degree in co-relation 15434. Up to 2506 conditions per place. [2024-11-28 02:48:18,144 INFO L140 encePairwiseOnDemand]: 327/330 looper letters, 24 selfloop transitions, 2 changer transitions 0/300 dead transitions. [2024-11-28 02:48:18,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 300 transitions, 686 flow [2024-11-28 02:48:18,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:48:18,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:48:18,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 870 transitions. [2024-11-28 02:48:18,147 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8787878787878788 [2024-11-28 02:48:18,147 INFO L175 Difference]: Start difference. First operand has 304 places, 299 transitions, 630 flow. Second operand 3 states and 870 transitions. [2024-11-28 02:48:18,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 300 transitions, 686 flow [2024-11-28 02:48:18,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 300 transitions, 674 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-28 02:48:18,156 INFO L231 Difference]: Finished difference. Result has 302 places, 300 transitions, 632 flow [2024-11-28 02:48:18,157 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=632, PETRI_PLACES=302, PETRI_TRANSITIONS=300} [2024-11-28 02:48:18,157 INFO L279 CegarLoopForPetriNet]: 312 programPoint places, -10 predicate places. [2024-11-28 02:48:18,157 INFO L471 AbstractCegarLoop]: Abstraction has has 302 places, 300 transitions, 632 flow [2024-11-28 02:48:18,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 283.6666666666667) internal successors, (851), 3 states have internal predecessors, (851), 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) [2024-11-28 02:48:18,158 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:48:18,158 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:18,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 02:48:18,158 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-28 02:48:18,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:18,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1366414485, now seen corresponding path program 1 times [2024-11-28 02:48:18,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:18,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125020830] [2024-11-28 02:48:18,159 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:18,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:18,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:18,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:48:18,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:18,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125020830] [2024-11-28 02:48:18,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125020830] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:48:18,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214658320] [2024-11-28 02:48:18,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:18,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:48:18,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:48:18,236 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:48:18,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:48:18,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:18,380 INFO L256 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:48:18,382 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:48:18,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:48:18,426 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:48:18,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:48:18,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214658320] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:48:18,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:48:18,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-28 02:48:18,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324942024] [2024-11-28 02:48:18,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:48:18,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:48:18,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:18,481 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:48:18,481 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:48:18,582 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 330 [2024-11-28 02:48:18,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 300 transitions, 632 flow. Second operand has 10 states, 10 states have (on average 280.2) internal successors, (2802), 10 states have internal predecessors, (2802), 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) [2024-11-28 02:48:18,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:48:18,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 330 [2024-11-28 02:48:18,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:48:20,693 INFO L124 PetriNetUnfolderBase]: 2033/12524 cut-off events. [2024-11-28 02:48:20,694 INFO L125 PetriNetUnfolderBase]: For 1217/1217 co-relation queries the response was YES. [2024-11-28 02:48:20,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15522 conditions, 12524 events. 2033/12524 cut-off events. For 1217/1217 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 147645 event pairs, 1720 based on Foata normal form. 2/11240 useless extension candidates. Maximal degree in co-relation 15469. Up to 2506 conditions per place. [2024-11-28 02:48:20,946 INFO L140 encePairwiseOnDemand]: 324/330 looper letters, 28 selfloop transitions, 9 changer transitions 0/308 dead transitions. [2024-11-28 02:48:20,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 308 transitions, 724 flow [2024-11-28 02:48:20,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:48:20,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:48:20,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2541 transitions. [2024-11-28 02:48:20,949 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8555555555555555 [2024-11-28 02:48:20,949 INFO L175 Difference]: Start difference. First operand has 302 places, 300 transitions, 632 flow. Second operand 9 states and 2541 transitions. [2024-11-28 02:48:20,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 308 transitions, 724 flow [2024-11-28 02:48:20,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 308 transitions, 722 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:48:20,959 INFO L231 Difference]: Finished difference. Result has 312 places, 306 transitions, 680 flow [2024-11-28 02:48:20,959 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=680, PETRI_PLACES=312, PETRI_TRANSITIONS=306} [2024-11-28 02:48:20,959 INFO L279 CegarLoopForPetriNet]: 312 programPoint places, 0 predicate places. [2024-11-28 02:48:20,960 INFO L471 AbstractCegarLoop]: Abstraction has has 312 places, 306 transitions, 680 flow [2024-11-28 02:48:20,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 280.2) internal successors, (2802), 10 states have internal predecessors, (2802), 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) [2024-11-28 02:48:20,961 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:48:20,962 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:20,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 02:48:21,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 02:48:21,163 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-28 02:48:21,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:21,163 INFO L85 PathProgramCache]: Analyzing trace with hash -240196437, now seen corresponding path program 2 times [2024-11-28 02:48:21,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:21,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442844038] [2024-11-28 02:48:21,163 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:48:21,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:21,202 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:48:21,202 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:48:21,385 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:48:21,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:21,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442844038] [2024-11-28 02:48:21,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442844038] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:48:21,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193669489] [2024-11-28 02:48:21,386 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:48:21,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:48:21,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:48:21,389 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:48:21,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:48:21,567 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:48:21,567 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:48:21,569 INFO L256 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:48:21,572 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:48:21,679 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:48:21,680 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:48:21,839 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:48:21,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193669489] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:48:21,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:48:21,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-28 02:48:21,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925619723] [2024-11-28 02:48:21,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:48:21,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 02:48:21,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:21,841 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 02:48:21,842 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:48:21,970 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 330 [2024-11-28 02:48:21,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 306 transitions, 680 flow. Second operand has 15 states, 15 states have (on average 280.26666666666665) internal successors, (4204), 15 states have internal predecessors, (4204), 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) [2024-11-28 02:48:21,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:48:21,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 330 [2024-11-28 02:48:21,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:48:24,728 INFO L124 PetriNetUnfolderBase]: 2033/12563 cut-off events. [2024-11-28 02:48:24,728 INFO L125 PetriNetUnfolderBase]: For 1239/1239 co-relation queries the response was YES. [2024-11-28 02:48:24,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15615 conditions, 12563 events. 2033/12563 cut-off events. For 1239/1239 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 147563 event pairs, 1720 based on Foata normal form. 3/11280 useless extension candidates. Maximal degree in co-relation 15431. Up to 2506 conditions per place. [2024-11-28 02:48:24,831 INFO L140 encePairwiseOnDemand]: 324/330 looper letters, 31 selfloop transitions, 18 changer transitions 0/320 dead transitions. [2024-11-28 02:48:24,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 320 transitions, 852 flow [2024-11-28 02:48:24,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 02:48:24,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-28 02:48:24,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5056 transitions. [2024-11-28 02:48:24,837 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8511784511784511 [2024-11-28 02:48:24,837 INFO L175 Difference]: Start difference. First operand has 312 places, 306 transitions, 680 flow. Second operand 18 states and 5056 transitions. [2024-11-28 02:48:24,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 320 transitions, 852 flow [2024-11-28 02:48:24,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 320 transitions, 840 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-28 02:48:24,849 INFO L231 Difference]: Finished difference. Result has 332 places, 316 transitions, 780 flow [2024-11-28 02:48:24,850 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=780, PETRI_PLACES=332, PETRI_TRANSITIONS=316} [2024-11-28 02:48:24,850 INFO L279 CegarLoopForPetriNet]: 312 programPoint places, 20 predicate places. [2024-11-28 02:48:24,850 INFO L471 AbstractCegarLoop]: Abstraction has has 332 places, 316 transitions, 780 flow [2024-11-28 02:48:24,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 280.26666666666665) internal successors, (4204), 15 states have internal predecessors, (4204), 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) [2024-11-28 02:48:24,851 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:48:24,852 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:24,858 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 02:48:25,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d229dd5-2a94-45b0-925c-380f52afec1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:48:25,052 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-28 02:48:25,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:25,053 INFO L85 PathProgramCache]: Analyzing trace with hash 843521757, now seen corresponding path program 3 times [2024-11-28 02:48:25,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:25,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296441877] [2024-11-28 02:48:25,053 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:48:25,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:25,107 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-28 02:48:25,107 INFO L230 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-28 02:48:25,108 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:48:25,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:48:25,148 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:48:25,148 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:48:25,149 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2024-11-28 02:48:25,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2024-11-28 02:48:25,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2024-11-28 02:48:25,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2024-11-28 02:48:25,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2024-11-28 02:48:25,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2024-11-28 02:48:25,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2024-11-28 02:48:25,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2024-11-28 02:48:25,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2024-11-28 02:48:25,150 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2024-11-28 02:48:25,150 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2024-11-28 02:48:25,150 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2024-11-28 02:48:25,150 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2024-11-28 02:48:25,150 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2024-11-28 02:48:25,150 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2024-11-28 02:48:25,150 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2024-11-28 02:48:25,150 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2024-11-28 02:48:25,151 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2024-11-28 02:48:25,151 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2024-11-28 02:48:25,151 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2024-11-28 02:48:25,151 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2024-11-28 02:48:25,151 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2024-11-28 02:48:25,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 02:48:25,151 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-11-28 02:48:25,152 WARN L246 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:48:25,152 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-28 02:48:25,217 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 02:48:25,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 377 places, 399 transitions, 838 flow [2024-11-28 02:48:25,307 INFO L124 PetriNetUnfolderBase]: 38/447 cut-off events. [2024-11-28 02:48:25,308 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-28 02:48:25,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 447 events. 38/447 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1589 event pairs, 0 based on Foata normal form. 0/382 useless extension candidates. Maximal degree in co-relation 381. Up to 12 conditions per place. [2024-11-28 02:48:25,316 INFO L82 GeneralOperation]: Start removeDead. Operand has 377 places, 399 transitions, 838 flow [2024-11-28 02:48:25,321 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 377 places, 399 transitions, 838 flow [2024-11-28 02:48:25,322 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:48:25,322 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;@770b5b2f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:48:25,323 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-11-28 02:48:25,326 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:48:25,326 INFO L124 PetriNetUnfolderBase]: 3/55 cut-off events. [2024-11-28 02:48:25,326 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:48:25,326 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:48:25,327 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:25,327 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2024-11-28 02:48:25,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:25,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1943981763, now seen corresponding path program 1 times [2024-11-28 02:48:25,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:25,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473029845] [2024-11-28 02:48:25,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:25,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:25,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:25,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:48:25,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:25,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473029845] [2024-11-28 02:48:25,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473029845] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:25,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:25,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:48:25,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213004358] [2024-11-28 02:48:25,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:25,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:48:25,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:25,548 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:48:25,548 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:48:26,107 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 399 [2024-11-28 02:48:26,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 399 transitions, 838 flow. Second operand has 6 states, 6 states have (on average 314.5) internal successors, (1887), 6 states have internal predecessors, (1887), 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) [2024-11-28 02:48:26,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:48:26,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 399 [2024-11-28 02:48:26,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand