./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1432cfab-d9e3-4bed-889c-f9c24a7f6c27/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1432cfab-d9e3-4bed-889c-f9c24a7f6c27/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1432cfab-d9e3-4bed-889c-f9c24a7f6c27/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1432cfab-d9e3-4bed-889c-f9c24a7f6c27/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1432cfab-d9e3-4bed-889c-f9c24a7f6c27/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1432cfab-d9e3-4bed-889c-f9c24a7f6c27/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4e91816f101a416d37c086dd7185cfb4e2bfa63eb286e4a418cb94db27cf2f6f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:35:48,354 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:35:48,433 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1432cfab-d9e3-4bed-889c-f9c24a7f6c27/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 07:35:48,439 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:35:48,439 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:35:48,464 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:35:48,465 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:35:48,466 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:35:48,466 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:35:48,467 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:35:48,468 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:35:48,469 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:35:48,469 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:35:48,470 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:35:48,470 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:35:48,471 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:35:48,472 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:35:48,472 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:35:48,473 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:35:48,473 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:35:48,474 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:35:48,475 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:35:48,475 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 07:35:48,476 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:35:48,476 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:35:48,477 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:35:48,477 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:35:48,478 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:35:48,479 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:35:48,479 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:35:48,480 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:35:48,481 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:35:48,481 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:35:48,482 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:35:48,482 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:35:48,483 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:35:48,483 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:35:48,484 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:35:48,484 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:35:48,485 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:35:48,485 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:35:48,486 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1432cfab-d9e3-4bed-889c-f9c24a7f6c27/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1432cfab-d9e3-4bed-889c-f9c24a7f6c27/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e91816f101a416d37c086dd7185cfb4e2bfa63eb286e4a418cb94db27cf2f6f [2023-11-19 07:35:48,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:35:48,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:35:48,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:35:48,856 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:35:48,857 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:35:48,859 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1432cfab-d9e3-4bed-889c-f9c24a7f6c27/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i [2023-11-19 07:35:51,994 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:35:52,391 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:35:52,392 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1432cfab-d9e3-4bed-889c-f9c24a7f6c27/sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i [2023-11-19 07:35:52,415 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1432cfab-d9e3-4bed-889c-f9c24a7f6c27/bin/uautomizer-verify-uCwYo4JHxu/data/5a9d5e19f/d038c7cc71e6404487db02df82d0db78/FLAG275a09965 [2023-11-19 07:35:52,433 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1432cfab-d9e3-4bed-889c-f9c24a7f6c27/bin/uautomizer-verify-uCwYo4JHxu/data/5a9d5e19f/d038c7cc71e6404487db02df82d0db78 [2023-11-19 07:35:52,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:35:52,446 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:35:52,447 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:35:52,448 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:35:52,453 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:35:52,454 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:35:52" (1/1) ... [2023-11-19 07:35:52,455 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b256f50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:52, skipping insertion in model container [2023-11-19 07:35:52,456 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:35:52" (1/1) ... [2023-11-19 07:35:52,519 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:35:52,919 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:35:52,933 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:35:52,978 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:35:53,016 WARN L675 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:35:53,024 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:35:53,025 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:53 WrapperNode [2023-11-19 07:35:53,025 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:35:53,026 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:35:53,027 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:35:53,027 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:35:53,035 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:53" (1/1) ... [2023-11-19 07:35:53,051 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:53" (1/1) ... [2023-11-19 07:35:53,082 INFO L138 Inliner]: procedures = 173, calls = 34, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 159 [2023-11-19 07:35:53,083 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:35:53,084 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:35:53,084 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:35:53,084 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:35:53,094 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:53" (1/1) ... [2023-11-19 07:35:53,095 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:53" (1/1) ... [2023-11-19 07:35:53,099 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:53" (1/1) ... [2023-11-19 07:35:53,099 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:53" (1/1) ... [2023-11-19 07:35:53,110 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:53" (1/1) ... [2023-11-19 07:35:53,125 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:53" (1/1) ... [2023-11-19 07:35:53,128 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:53" (1/1) ... [2023-11-19 07:35:53,130 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:53" (1/1) ... [2023-11-19 07:35:53,137 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:35:53,139 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:35:53,139 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:35:53,139 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:35:53,140 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:53" (1/1) ... [2023-11-19 07:35:53,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:35:53,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1432cfab-d9e3-4bed-889c-f9c24a7f6c27/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:35:53,183 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1432cfab-d9e3-4bed-889c-f9c24a7f6c27/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:35:53,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1432cfab-d9e3-4bed-889c-f9c24a7f6c27/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:35:53,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:35:53,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:35:53,227 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:35:53,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:35:53,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:35:53,227 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-19 07:35:53,228 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-19 07:35:53,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:35:53,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:35:53,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:35:53,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:35:53,230 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:35:53,437 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:35:53,440 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:35:53,760 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:35:53,772 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:35:53,772 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-11-19 07:35:53,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:53 BoogieIcfgContainer [2023-11-19 07:35:53,777 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:35:53,781 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:35:53,781 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:35:53,784 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:35:53,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:35:52" (1/3) ... [2023-11-19 07:35:53,788 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f19435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:53, skipping insertion in model container [2023-11-19 07:35:53,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:53" (2/3) ... [2023-11-19 07:35:53,789 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f19435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:53, skipping insertion in model container [2023-11-19 07:35:53,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:53" (3/3) ... [2023-11-19 07:35:53,790 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_20-callback_racefree.i [2023-11-19 07:35:53,813 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:35:53,825 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:35:53,826 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-19 07:35:53,826 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:35:53,902 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 07:35:53,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 177 transitions, 361 flow [2023-11-19 07:35:54,096 INFO L124 PetriNetUnfolderBase]: 27/278 cut-off events. [2023-11-19 07:35:54,097 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:35:54,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 278 events. 27/278 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 909 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 136. Up to 6 conditions per place. [2023-11-19 07:35:54,108 INFO L82 GeneralOperation]: Start removeDead. Operand has 164 places, 177 transitions, 361 flow [2023-11-19 07:35:54,124 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 177 transitions, 361 flow [2023-11-19 07:35:54,128 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:35:54,150 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 164 places, 177 transitions, 361 flow [2023-11-19 07:35:54,161 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 164 places, 177 transitions, 361 flow [2023-11-19 07:35:54,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 177 transitions, 361 flow [2023-11-19 07:35:54,275 INFO L124 PetriNetUnfolderBase]: 27/278 cut-off events. [2023-11-19 07:35:54,275 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:35:54,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 278 events. 27/278 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 909 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 136. Up to 6 conditions per place. [2023-11-19 07:35:54,284 INFO L119 LiptonReduction]: Number of co-enabled transitions 6206 [2023-11-19 07:35:58,987 INFO L134 LiptonReduction]: Checked pairs total: 12179 [2023-11-19 07:35:58,987 INFO L136 LiptonReduction]: Total number of compositions: 152 [2023-11-19 07:35:59,015 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:35:59,025 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5df59849, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:35:59,025 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-19 07:35:59,034 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:35:59,034 INFO L124 PetriNetUnfolderBase]: 2/11 cut-off events. [2023-11-19 07:35:59,034 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:35:59,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:59,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:35:59,036 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-19 07:35:59,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:59,041 INFO L85 PathProgramCache]: Analyzing trace with hash 19632510, now seen corresponding path program 1 times [2023-11-19 07:35:59,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:59,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515761245] [2023-11-19 07:35:59,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:59,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:59,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:59,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:59,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:59,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515761245] [2023-11-19 07:35:59,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515761245] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:59,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:59,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:35:59,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887337906] [2023-11-19 07:35:59,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:59,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:35:59,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:59,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:35:59,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:35:59,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 329 [2023-11-19 07:35:59,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 54 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:59,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:59,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 329 [2023-11-19 07:35:59,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:59,561 INFO L124 PetriNetUnfolderBase]: 97/274 cut-off events. [2023-11-19 07:35:59,561 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:35:59,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 491 conditions, 274 events. 97/274 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1158 event pairs, 0 based on Foata normal form. 30/272 useless extension candidates. Maximal degree in co-relation 465. Up to 204 conditions per place. [2023-11-19 07:35:59,566 INFO L140 encePairwiseOnDemand]: 315/329 looper letters, 30 selfloop transitions, 2 changer transitions 2/47 dead transitions. [2023-11-19 07:35:59,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 47 transitions, 169 flow [2023-11-19 07:35:59,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:35:59,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:35:59,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 515 transitions. [2023-11-19 07:35:59,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217831813576495 [2023-11-19 07:35:59,587 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 515 transitions. [2023-11-19 07:35:59,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 515 transitions. [2023-11-19 07:35:59,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:59,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 515 transitions. [2023-11-19 07:35:59,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:59,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:59,607 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:59,609 INFO L175 Difference]: Start difference. First operand has 44 places, 54 transitions, 115 flow. Second operand 3 states and 515 transitions. [2023-11-19 07:35:59,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 47 transitions, 169 flow [2023-11-19 07:35:59,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 47 transitions, 169 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:35:59,617 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 90 flow [2023-11-19 07:35:59,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2023-11-19 07:35:59,624 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 0 predicate places. [2023-11-19 07:35:59,624 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 90 flow [2023-11-19 07:35:59,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:59,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:59,626 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 07:35:59,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:35:59,626 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-19 07:35:59,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:59,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1673162880, now seen corresponding path program 1 times [2023-11-19 07:35:59,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:59,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145996614] [2023-11-19 07:35:59,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:59,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:59,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:35:59,664 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:35:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:35:59,711 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:35:59,717 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:35:59,719 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2023-11-19 07:35:59,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (6 of 8 remaining) [2023-11-19 07:35:59,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (5 of 8 remaining) [2023-11-19 07:35:59,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (4 of 8 remaining) [2023-11-19 07:35:59,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (3 of 8 remaining) [2023-11-19 07:35:59,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (2 of 8 remaining) [2023-11-19 07:35:59,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 8 remaining) [2023-11-19 07:35:59,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 8 remaining) [2023-11-19 07:35:59,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:35:59,725 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 07:35:59,728 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:35:59,729 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:35:59,766 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:35:59,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 208 transitions, 432 flow [2023-11-19 07:35:59,839 INFO L124 PetriNetUnfolderBase]: 45/442 cut-off events. [2023-11-19 07:35:59,839 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:35:59,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 454 conditions, 442 events. 45/442 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1796 event pairs, 0 based on Foata normal form. 0/375 useless extension candidates. Maximal degree in co-relation 280. Up to 9 conditions per place. [2023-11-19 07:35:59,847 INFO L82 GeneralOperation]: Start removeDead. Operand has 192 places, 208 transitions, 432 flow [2023-11-19 07:35:59,852 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 192 places, 208 transitions, 432 flow [2023-11-19 07:35:59,852 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:35:59,853 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 192 places, 208 transitions, 432 flow [2023-11-19 07:35:59,854 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 192 places, 208 transitions, 432 flow [2023-11-19 07:35:59,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 208 transitions, 432 flow [2023-11-19 07:35:59,920 INFO L124 PetriNetUnfolderBase]: 45/442 cut-off events. [2023-11-19 07:35:59,920 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:35:59,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 454 conditions, 442 events. 45/442 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1796 event pairs, 0 based on Foata normal form. 0/375 useless extension candidates. Maximal degree in co-relation 280. Up to 9 conditions per place. [2023-11-19 07:35:59,937 INFO L119 LiptonReduction]: Number of co-enabled transitions 14732 [2023-11-19 07:36:04,526 INFO L134 LiptonReduction]: Checked pairs total: 31988 [2023-11-19 07:36:04,527 INFO L136 LiptonReduction]: Total number of compositions: 185 [2023-11-19 07:36:04,530 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:36:04,531 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5df59849, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:36:04,532 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-19 07:36:04,535 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:36:04,535 INFO L124 PetriNetUnfolderBase]: 2/11 cut-off events. [2023-11-19 07:36:04,535 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:36:04,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:04,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:36:04,536 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:36:04,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:04,537 INFO L85 PathProgramCache]: Analyzing trace with hash 32589498, now seen corresponding path program 1 times [2023-11-19 07:36:04,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:04,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078062209] [2023-11-19 07:36:04,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:04,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:04,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:04,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:04,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:04,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078062209] [2023-11-19 07:36:04,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078062209] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:04,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:04,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:04,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192431882] [2023-11-19 07:36:04,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:04,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:04,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:04,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:04,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:04,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 393 [2023-11-19 07:36:04,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 69 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:04,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:04,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 393 [2023-11-19 07:36:04,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:05,072 INFO L124 PetriNetUnfolderBase]: 1251/2440 cut-off events. [2023-11-19 07:36:05,072 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-11-19 07:36:05,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4521 conditions, 2440 events. 1251/2440 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 14732 event pairs, 905 based on Foata normal form. 323/2477 useless extension candidates. Maximal degree in co-relation 1886. Up to 2036 conditions per place. [2023-11-19 07:36:05,092 INFO L140 encePairwiseOnDemand]: 376/393 looper letters, 40 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2023-11-19 07:36:05,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 60 transitions, 220 flow [2023-11-19 07:36:05,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:05,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:36:05,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 598 transitions. [2023-11-19 07:36:05,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5072094995759118 [2023-11-19 07:36:05,100 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 598 transitions. [2023-11-19 07:36:05,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 598 transitions. [2023-11-19 07:36:05,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:05,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 598 transitions. [2023-11-19 07:36:05,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:05,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 393.0) internal successors, (1572), 4 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:05,110 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 393.0) internal successors, (1572), 4 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:05,110 INFO L175 Difference]: Start difference. First operand has 57 places, 69 transitions, 154 flow. Second operand 3 states and 598 transitions. [2023-11-19 07:36:05,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 60 transitions, 220 flow [2023-11-19 07:36:05,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 60 transitions, 220 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:36:05,117 INFO L231 Difference]: Finished difference. Result has 57 places, 54 transitions, 134 flow [2023-11-19 07:36:05,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=57, PETRI_TRANSITIONS=54} [2023-11-19 07:36:05,119 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 0 predicate places. [2023-11-19 07:36:05,119 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 54 transitions, 134 flow [2023-11-19 07:36:05,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:05,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:05,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:05,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:36:05,121 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:36:05,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:05,121 INFO L85 PathProgramCache]: Analyzing trace with hash -328189669, now seen corresponding path program 1 times [2023-11-19 07:36:05,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:05,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326173137] [2023-11-19 07:36:05,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:05,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:05,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:05,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:05,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:05,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326173137] [2023-11-19 07:36:05,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326173137] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:05,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:05,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:05,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222811255] [2023-11-19 07:36:05,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:05,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:05,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:05,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:05,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:05,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 393 [2023-11-19 07:36:05,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:05,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:05,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 393 [2023-11-19 07:36:05,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:06,262 INFO L124 PetriNetUnfolderBase]: 4520/7643 cut-off events. [2023-11-19 07:36:06,262 INFO L125 PetriNetUnfolderBase]: For 215/215 co-relation queries the response was YES. [2023-11-19 07:36:06,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15176 conditions, 7643 events. 4520/7643 cut-off events. For 215/215 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 45292 event pairs, 1542 based on Foata normal form. 0/6902 useless extension candidates. Maximal degree in co-relation 15114. Up to 4597 conditions per place. [2023-11-19 07:36:06,319 INFO L140 encePairwiseOnDemand]: 381/393 looper letters, 72 selfloop transitions, 8 changer transitions 0/87 dead transitions. [2023-11-19 07:36:06,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 87 transitions, 378 flow [2023-11-19 07:36:06,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:06,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:36:06,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2023-11-19 07:36:06,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5046649703138253 [2023-11-19 07:36:06,322 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 595 transitions. [2023-11-19 07:36:06,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 595 transitions. [2023-11-19 07:36:06,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:06,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 595 transitions. [2023-11-19 07:36:06,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.33333333333334) internal successors, (595), 3 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:06,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 393.0) internal successors, (1572), 4 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:06,331 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 393.0) internal successors, (1572), 4 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:06,331 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 134 flow. Second operand 3 states and 595 transitions. [2023-11-19 07:36:06,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 87 transitions, 378 flow [2023-11-19 07:36:06,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 87 transitions, 375 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:36:06,335 INFO L231 Difference]: Finished difference. Result has 58 places, 58 transitions, 188 flow [2023-11-19 07:36:06,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=58, PETRI_TRANSITIONS=58} [2023-11-19 07:36:06,336 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 1 predicate places. [2023-11-19 07:36:06,337 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 58 transitions, 188 flow [2023-11-19 07:36:06,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:06,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:06,338 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 07:36:06,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:36:06,338 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:36:06,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:06,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1619203993, now seen corresponding path program 1 times [2023-11-19 07:36:06,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:06,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345711228] [2023-11-19 07:36:06,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:06,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:06,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:36:06,372 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:36:06,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:36:06,411 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:36:06,411 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:36:06,412 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2023-11-19 07:36:06,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2023-11-19 07:36:06,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2023-11-19 07:36:06,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2023-11-19 07:36:06,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2023-11-19 07:36:06,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2023-11-19 07:36:06,416 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2023-11-19 07:36:06,416 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2023-11-19 07:36:06,417 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2023-11-19 07:36:06,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:36:06,417 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-19 07:36:06,418 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:36:06,418 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 07:36:06,454 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:36:06,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 239 transitions, 505 flow [2023-11-19 07:36:06,575 INFO L124 PetriNetUnfolderBase]: 68/653 cut-off events. [2023-11-19 07:36:06,575 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-19 07:36:06,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 678 conditions, 653 events. 68/653 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2967 event pairs, 1 based on Foata normal form. 0/554 useless extension candidates. Maximal degree in co-relation 450. Up to 16 conditions per place. [2023-11-19 07:36:06,580 INFO L82 GeneralOperation]: Start removeDead. Operand has 220 places, 239 transitions, 505 flow [2023-11-19 07:36:06,586 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 220 places, 239 transitions, 505 flow [2023-11-19 07:36:06,587 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:36:06,587 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 220 places, 239 transitions, 505 flow [2023-11-19 07:36:06,588 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 220 places, 239 transitions, 505 flow [2023-11-19 07:36:06,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 239 transitions, 505 flow [2023-11-19 07:36:06,683 INFO L124 PetriNetUnfolderBase]: 68/653 cut-off events. [2023-11-19 07:36:06,683 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-19 07:36:06,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 678 conditions, 653 events. 68/653 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2967 event pairs, 1 based on Foata normal form. 0/554 useless extension candidates. Maximal degree in co-relation 450. Up to 16 conditions per place. [2023-11-19 07:36:06,716 INFO L119 LiptonReduction]: Number of co-enabled transitions 24882 [2023-11-19 07:36:11,595 INFO L134 LiptonReduction]: Checked pairs total: 50268 [2023-11-19 07:36:11,595 INFO L136 LiptonReduction]: Total number of compositions: 201 [2023-11-19 07:36:11,598 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:36:11,599 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5df59849, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:36:11,599 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-19 07:36:11,602 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:36:11,602 INFO L124 PetriNetUnfolderBase]: 2/11 cut-off events. [2023-11-19 07:36:11,602 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:36:11,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:11,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:36:11,603 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-19 07:36:11,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:11,603 INFO L85 PathProgramCache]: Analyzing trace with hash 47162121, now seen corresponding path program 1 times [2023-11-19 07:36:11,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:11,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085382288] [2023-11-19 07:36:11,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:11,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:11,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:11,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:11,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:11,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085382288] [2023-11-19 07:36:11,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085382288] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:11,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:11,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:11,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29088210] [2023-11-19 07:36:11,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:11,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:11,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:11,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:11,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:11,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 440 [2023-11-19 07:36:11,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 82 transitions, 191 flow. Second operand has 3 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:11,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:11,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 440 [2023-11-19 07:36:11,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:14,674 INFO L124 PetriNetUnfolderBase]: 16073/25440 cut-off events. [2023-11-19 07:36:14,674 INFO L125 PetriNetUnfolderBase]: For 610/610 co-relation queries the response was YES. [2023-11-19 07:36:14,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48530 conditions, 25440 events. 16073/25440 cut-off events. For 610/610 co-relation queries the response was YES. Maximal size of possible extension queue 731. Compared 186657 event pairs, 9827 based on Foata normal form. 5191/26562 useless extension candidates. Maximal degree in co-relation 5317. Up to 22710 conditions per place. [2023-11-19 07:36:14,860 INFO L140 encePairwiseOnDemand]: 421/440 looper letters, 50 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2023-11-19 07:36:14,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 73 transitions, 277 flow [2023-11-19 07:36:14,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:14,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:36:14,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 681 transitions. [2023-11-19 07:36:14,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159090909090909 [2023-11-19 07:36:14,864 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 681 transitions. [2023-11-19 07:36:14,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 681 transitions. [2023-11-19 07:36:14,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:14,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 681 transitions. [2023-11-19 07:36:14,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:14,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:14,873 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:14,873 INFO L175 Difference]: Start difference. First operand has 69 places, 82 transitions, 191 flow. Second operand 3 states and 681 transitions. [2023-11-19 07:36:14,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 73 transitions, 277 flow [2023-11-19 07:36:14,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 73 transitions, 277 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:36:14,958 INFO L231 Difference]: Finished difference. Result has 70 places, 66 transitions, 169 flow [2023-11-19 07:36:14,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=70, PETRI_TRANSITIONS=66} [2023-11-19 07:36:14,959 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 1 predicate places. [2023-11-19 07:36:14,959 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 66 transitions, 169 flow [2023-11-19 07:36:14,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:14,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:14,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:14,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:36:14,961 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-19 07:36:14,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:14,961 INFO L85 PathProgramCache]: Analyzing trace with hash 618410475, now seen corresponding path program 1 times [2023-11-19 07:36:14,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:14,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747390247] [2023-11-19 07:36:14,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:14,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:14,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:14,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:14,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747390247] [2023-11-19 07:36:14,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747390247] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:14,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:14,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:14,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204731239] [2023-11-19 07:36:14,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:14,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:14,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:14,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:15,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:15,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 440 [2023-11-19 07:36:15,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 66 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:15,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:15,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 440 [2023-11-19 07:36:15,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:22,975 INFO L124 PetriNetUnfolderBase]: 58370/85617 cut-off events. [2023-11-19 07:36:22,975 INFO L125 PetriNetUnfolderBase]: For 2221/2221 co-relation queries the response was YES. [2023-11-19 07:36:23,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170343 conditions, 85617 events. 58370/85617 cut-off events. For 2221/2221 co-relation queries the response was YES. Maximal size of possible extension queue 1378. Compared 598262 event pairs, 23500 based on Foata normal form. 0/72726 useless extension candidates. Maximal degree in co-relation 170279. Up to 55060 conditions per place. [2023-11-19 07:36:23,428 INFO L140 encePairwiseOnDemand]: 425/440 looper letters, 87 selfloop transitions, 10 changer transitions 0/107 dead transitions. [2023-11-19 07:36:23,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 107 transitions, 473 flow [2023-11-19 07:36:23,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:23,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:36:23,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 676 transitions. [2023-11-19 07:36:23,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5121212121212121 [2023-11-19 07:36:23,436 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 676 transitions. [2023-11-19 07:36:23,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 676 transitions. [2023-11-19 07:36:23,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:23,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 676 transitions. [2023-11-19 07:36:23,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:23,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:23,445 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:23,445 INFO L175 Difference]: Start difference. First operand has 70 places, 66 transitions, 169 flow. Second operand 3 states and 676 transitions. [2023-11-19 07:36:23,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 107 transitions, 473 flow [2023-11-19 07:36:23,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 107 transitions, 470 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:36:23,464 INFO L231 Difference]: Finished difference. Result has 71 places, 72 transitions, 241 flow [2023-11-19 07:36:23,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=241, PETRI_PLACES=71, PETRI_TRANSITIONS=72} [2023-11-19 07:36:23,467 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 2 predicate places. [2023-11-19 07:36:23,467 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 72 transitions, 241 flow [2023-11-19 07:36:23,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:23,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:23,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:23,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:36:23,471 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-19 07:36:23,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:23,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1083783437, now seen corresponding path program 1 times [2023-11-19 07:36:23,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:23,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262441549] [2023-11-19 07:36:23,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:23,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:23,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:23,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:23,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:23,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262441549] [2023-11-19 07:36:23,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262441549] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:36:23,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671500504] [2023-11-19 07:36:23,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:23,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:23,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1432cfab-d9e3-4bed-889c-f9c24a7f6c27/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:23,539 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1432cfab-d9e3-4bed-889c-f9c24a7f6c27/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:23,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1432cfab-d9e3-4bed-889c-f9c24a7f6c27/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:36:23,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:23,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:36:23,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:23,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:36:23,662 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:36:23,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671500504] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:23,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:36:23,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-11-19 07:36:23,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682216879] [2023-11-19 07:36:23,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:23,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:23,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:23,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:23,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:36:23,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 440 [2023-11-19 07:36:23,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 72 transitions, 241 flow. Second operand has 3 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:23,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:23,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 440 [2023-11-19 07:36:23,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:30,691 INFO L124 PetriNetUnfolderBase]: 46127/70618 cut-off events. [2023-11-19 07:36:30,691 INFO L125 PetriNetUnfolderBase]: For 20750/20758 co-relation queries the response was YES. [2023-11-19 07:36:30,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158774 conditions, 70618 events. 46127/70618 cut-off events. For 20750/20758 co-relation queries the response was YES. Maximal size of possible extension queue 1506. Compared 539645 event pairs, 34167 based on Foata normal form. 4/58426 useless extension candidates. Maximal degree in co-relation 38620. Up to 62144 conditions per place. [2023-11-19 07:36:31,057 INFO L140 encePairwiseOnDemand]: 434/440 looper letters, 65 selfloop transitions, 8 changer transitions 0/93 dead transitions. [2023-11-19 07:36:31,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 93 transitions, 447 flow [2023-11-19 07:36:31,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:31,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:36:31,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 653 transitions. [2023-11-19 07:36:31,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4946969696969697 [2023-11-19 07:36:31,061 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 653 transitions. [2023-11-19 07:36:31,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 653 transitions. [2023-11-19 07:36:31,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:31,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 653 transitions. [2023-11-19 07:36:31,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:31,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:31,069 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:31,069 INFO L175 Difference]: Start difference. First operand has 71 places, 72 transitions, 241 flow. Second operand 3 states and 653 transitions. [2023-11-19 07:36:31,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 93 transitions, 447 flow [2023-11-19 07:36:31,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 93 transitions, 421 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:36:31,106 INFO L231 Difference]: Finished difference. Result has 72 places, 79 transitions, 287 flow [2023-11-19 07:36:31,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=287, PETRI_PLACES=72, PETRI_TRANSITIONS=79} [2023-11-19 07:36:31,108 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 3 predicate places. [2023-11-19 07:36:31,109 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 79 transitions, 287 flow [2023-11-19 07:36:31,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:31,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:31,110 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-11-19 07:36:31,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1432cfab-d9e3-4bed-889c-f9c24a7f6c27/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:31,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1432cfab-d9e3-4bed-889c-f9c24a7f6c27/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:31,328 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-19 07:36:31,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:31,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1907744487, now seen corresponding path program 1 times [2023-11-19 07:36:31,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:31,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019489560] [2023-11-19 07:36:31,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:31,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:31,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:36:31,357 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:36:31,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:36:31,389 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:36:31,390 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:36:31,390 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2023-11-19 07:36:31,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2023-11-19 07:36:31,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2023-11-19 07:36:31,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2023-11-19 07:36:31,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2023-11-19 07:36:31,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2023-11-19 07:36:31,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2023-11-19 07:36:31,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2023-11-19 07:36:31,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2023-11-19 07:36:31,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2023-11-19 07:36:31,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:36:31,392 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-19 07:36:31,394 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:36:31,394 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-19 07:36:31,433 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-19 07:36:31,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 248 places, 270 transitions, 580 flow [2023-11-19 07:36:31,578 INFO L124 PetriNetUnfolderBase]: 103/960 cut-off events. [2023-11-19 07:36:31,578 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-19 07:36:31,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1011 conditions, 960 events. 103/960 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4767 event pairs, 6 based on Foata normal form. 0/817 useless extension candidates. Maximal degree in co-relation 673. Up to 32 conditions per place. [2023-11-19 07:36:31,585 INFO L82 GeneralOperation]: Start removeDead. Operand has 248 places, 270 transitions, 580 flow [2023-11-19 07:36:31,593 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 248 places, 270 transitions, 580 flow [2023-11-19 07:36:31,593 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:36:31,593 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 248 places, 270 transitions, 580 flow [2023-11-19 07:36:31,594 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 248 places, 270 transitions, 580 flow [2023-11-19 07:36:31,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 248 places, 270 transitions, 580 flow [2023-11-19 07:36:31,742 INFO L124 PetriNetUnfolderBase]: 103/960 cut-off events. [2023-11-19 07:36:31,742 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-19 07:36:31,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1011 conditions, 960 events. 103/960 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4767 event pairs, 6 based on Foata normal form. 0/817 useless extension candidates. Maximal degree in co-relation 673. Up to 32 conditions per place. [2023-11-19 07:36:31,782 INFO L119 LiptonReduction]: Number of co-enabled transitions 36888 [2023-11-19 07:36:36,769 INFO L134 LiptonReduction]: Checked pairs total: 84720 [2023-11-19 07:36:36,769 INFO L136 LiptonReduction]: Total number of compositions: 242 [2023-11-19 07:36:36,771 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:36:36,772 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5df59849, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:36:36,772 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-19 07:36:36,773 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:36:36,774 INFO L124 PetriNetUnfolderBase]: 2/8 cut-off events. [2023-11-19 07:36:36,774 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:36:36,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:36,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:36:36,774 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-11-19 07:36:36,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:36,775 INFO L85 PathProgramCache]: Analyzing trace with hash 63767613, now seen corresponding path program 1 times [2023-11-19 07:36:36,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:36,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693986455] [2023-11-19 07:36:36,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:36,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:36,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:36,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:36,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:36,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693986455] [2023-11-19 07:36:36,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693986455] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:36,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:36,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:36,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727627608] [2023-11-19 07:36:36,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:36,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:36,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:36,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:36,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:36,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 512 [2023-11-19 07:36:36,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 96 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 228.33333333333334) internal successors, (685), 3 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:36,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:36,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 512 [2023-11-19 07:36:36,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand