./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/06_ticket.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e7bb482b 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_da349717-ffe7-431c-8321-2c756f9a80f7/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da349717-ffe7-431c-8321-2c756f9a80f7/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da349717-ffe7-431c-8321-2c756f9a80f7/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da349717-ffe7-431c-8321-2c756f9a80f7/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/06_ticket.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da349717-ffe7-431c-8321-2c756f9a80f7/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da349717-ffe7-431c-8321-2c756f9a80f7/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 d21b75ab9211f19b3beb5c83d6d66f0a0906e2f271e4621d3ded70db8a63bb33 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:47:34,697 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:47:34,790 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da349717-ffe7-431c-8321-2c756f9a80f7/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-06 22:47:34,798 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:47:34,799 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:47:34,844 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:47:34,845 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:47:34,846 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:47:34,847 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:47:34,852 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:47:34,854 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:47:34,854 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:47:34,855 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:47:34,857 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:47:34,857 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:47:34,858 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:47:34,858 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:47:34,859 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:47:34,859 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:47:34,860 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:47:34,860 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:47:34,861 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:47:34,862 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-06 22:47:34,863 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:47:34,864 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:47:34,865 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:47:34,865 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:47:34,866 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:47:34,867 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:47:34,867 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:47:34,869 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:47:34,869 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:47:34,869 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:47:34,870 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:47:34,870 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:47:34,870 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:47:34,871 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:47:34,871 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:47:34,871 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:47:34,872 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:47:34,872 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:47:34,872 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_da349717-ffe7-431c-8321-2c756f9a80f7/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da349717-ffe7-431c-8321-2c756f9a80f7/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d21b75ab9211f19b3beb5c83d6d66f0a0906e2f271e4621d3ded70db8a63bb33 [2023-11-06 22:47:35,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:47:35,295 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:47:35,298 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:47:35,299 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:47:35,300 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:47:35,301 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da349717-ffe7-431c-8321-2c756f9a80f7/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-ext/06_ticket.i [2023-11-06 22:47:38,438 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:47:38,779 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:47:38,784 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da349717-ffe7-431c-8321-2c756f9a80f7/sv-benchmarks/c/pthread-ext/06_ticket.i [2023-11-06 22:47:38,809 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da349717-ffe7-431c-8321-2c756f9a80f7/bin/uautomizer-verify-WvqO1wxjHP/data/ac368d08b/b98549f9d0fd4503b8188eb630f56cd8/FLAG03d3cf7b3 [2023-11-06 22:47:38,827 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da349717-ffe7-431c-8321-2c756f9a80f7/bin/uautomizer-verify-WvqO1wxjHP/data/ac368d08b/b98549f9d0fd4503b8188eb630f56cd8 [2023-11-06 22:47:38,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:47:38,835 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:47:38,842 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:47:38,842 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:47:38,848 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:47:38,849 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:47:38" (1/1) ... [2023-11-06 22:47:38,850 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60a5fffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:38, skipping insertion in model container [2023-11-06 22:47:38,850 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:47:38" (1/1) ... [2023-11-06 22:47:38,913 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:47:39,339 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:47:39,351 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:47:39,411 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:47:39,468 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:47:39,468 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:47:39,477 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:47:39,478 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:39 WrapperNode [2023-11-06 22:47:39,478 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:47:39,479 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:47:39,479 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:47:39,480 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:47:39,488 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:39" (1/1) ... [2023-11-06 22:47:39,503 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:39" (1/1) ... [2023-11-06 22:47:39,529 INFO L138 Inliner]: procedures = 172, calls = 17, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 104 [2023-11-06 22:47:39,529 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:47:39,530 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:47:39,530 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:47:39,530 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:47:39,540 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:39" (1/1) ... [2023-11-06 22:47:39,540 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:39" (1/1) ... [2023-11-06 22:47:39,543 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:39" (1/1) ... [2023-11-06 22:47:39,544 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:39" (1/1) ... [2023-11-06 22:47:39,551 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:39" (1/1) ... [2023-11-06 22:47:39,555 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:39" (1/1) ... [2023-11-06 22:47:39,557 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:39" (1/1) ... [2023-11-06 22:47:39,558 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:39" (1/1) ... [2023-11-06 22:47:39,562 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:47:39,563 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:47:39,563 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:47:39,563 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:47:39,564 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:39" (1/1) ... [2023-11-06 22:47:39,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:47:39,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da349717-ffe7-431c-8321-2c756f9a80f7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:47:39,600 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da349717-ffe7-431c-8321-2c756f9a80f7/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:47:39,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da349717-ffe7-431c-8321-2c756f9a80f7/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:47:39,651 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-06 22:47:39,651 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-06 22:47:39,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:47:39,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:47:39,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:47:39,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:47:39,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:47:39,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:47:39,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:47:39,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:47:39,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:47:39,655 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:47:39,787 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:47:39,789 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:47:40,086 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:47:40,223 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:47:40,223 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 22:47:40,226 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:47:40 BoogieIcfgContainer [2023-11-06 22:47:40,226 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:47:40,228 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:47:40,228 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:47:40,231 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:47:40,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:47:38" (1/3) ... [2023-11-06 22:47:40,233 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@143245ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:47:40, skipping insertion in model container [2023-11-06 22:47:40,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:39" (2/3) ... [2023-11-06 22:47:40,233 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@143245ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:47:40, skipping insertion in model container [2023-11-06 22:47:40,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:47:40" (3/3) ... [2023-11-06 22:47:40,235 INFO L112 eAbstractionObserver]: Analyzing ICFG 06_ticket.i [2023-11-06 22:47:40,242 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:47:40,250 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:47:40,250 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-11-06 22:47:40,251 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:47:40,332 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:47:40,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 111 transitions, 226 flow [2023-11-06 22:47:40,454 INFO L124 PetriNetUnfolderBase]: 9/122 cut-off events. [2023-11-06 22:47:40,454 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:47:40,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 122 events. 9/122 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 146 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 97. Up to 4 conditions per place. [2023-11-06 22:47:40,461 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 111 transitions, 226 flow [2023-11-06 22:47:40,466 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 111 transitions, 226 flow [2023-11-06 22:47:40,470 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:47:40,483 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 106 places, 111 transitions, 226 flow [2023-11-06 22:47:40,486 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 106 places, 111 transitions, 226 flow [2023-11-06 22:47:40,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 111 transitions, 226 flow [2023-11-06 22:47:40,522 INFO L124 PetriNetUnfolderBase]: 9/122 cut-off events. [2023-11-06 22:47:40,523 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:47:40,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 122 events. 9/122 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 146 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 97. Up to 4 conditions per place. [2023-11-06 22:47:40,531 INFO L119 LiptonReduction]: Number of co-enabled transitions 2352 [2023-11-06 22:47:43,639 INFO L134 LiptonReduction]: Checked pairs total: 2276 [2023-11-06 22:47:43,639 INFO L136 LiptonReduction]: Total number of compositions: 134 [2023-11-06 22:47:43,660 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:47:43,667 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=LoopsAndPotentialCycles, 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;@3968e38a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:47:43,668 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-11-06 22:47:43,673 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:47:43,674 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-06 22:47:43,675 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:47:43,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:47:43,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:47:43,676 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-11-06 22:47:43,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:43,682 INFO L85 PathProgramCache]: Analyzing trace with hash 16426665, now seen corresponding path program 1 times [2023-11-06 22:47:43,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:43,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851827062] [2023-11-06 22:47:43,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:43,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:43,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:43,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:47:43,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:43,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851827062] [2023-11-06 22:47:43,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851827062] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:43,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:43,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:47:43,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826831440] [2023-11-06 22:47:43,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:43,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:47:43,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:43,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:47:43,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:47:43,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 245 [2023-11-06 22:47:43,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 24 transitions, 52 flow. Second operand has 2 states, 2 states have (on average 98.0) internal successors, (196), 2 states have internal predecessors, (196), 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) [2023-11-06 22:47:43,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:47:43,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 245 [2023-11-06 22:47:43,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:47:43,956 INFO L124 PetriNetUnfolderBase]: 9/25 cut-off events. [2023-11-06 22:47:43,959 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:47:43,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 25 events. 9/25 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 39 event pairs, 6 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 40. Up to 24 conditions per place. [2023-11-06 22:47:43,960 INFO L140 encePairwiseOnDemand]: 230/245 looper letters, 8 selfloop transitions, 0 changer transitions 0/9 dead transitions. [2023-11-06 22:47:43,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 12 places, 9 transitions, 38 flow [2023-11-06 22:47:43,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:47:43,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:47:43,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 215 transitions. [2023-11-06 22:47:43,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4387755102040816 [2023-11-06 22:47:43,983 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 215 transitions. [2023-11-06 22:47:43,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 215 transitions. [2023-11-06 22:47:43,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:47:43,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 215 transitions. [2023-11-06 22:47:43,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 107.5) internal successors, (215), 2 states have internal predecessors, (215), 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) [2023-11-06 22:47:44,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 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) [2023-11-06 22:47:44,007 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 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) [2023-11-06 22:47:44,009 INFO L175 Difference]: Start difference. First operand has 25 places, 24 transitions, 52 flow. Second operand 2 states and 215 transitions. [2023-11-06 22:47:44,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 12 places, 9 transitions, 38 flow [2023-11-06 22:47:44,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 9 transitions, 38 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:47:44,014 INFO L231 Difference]: Finished difference. Result has 12 places, 9 transitions, 22 flow [2023-11-06 22:47:44,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=22, PETRI_PLACES=12, PETRI_TRANSITIONS=9} [2023-11-06 22:47:44,023 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, -13 predicate places. [2023-11-06 22:47:44,023 INFO L495 AbstractCegarLoop]: Abstraction has has 12 places, 9 transitions, 22 flow [2023-11-06 22:47:44,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 98.0) internal successors, (196), 2 states have internal predecessors, (196), 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) [2023-11-06 22:47:44,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:47:44,024 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-06 22:47:44,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:47:44,025 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-11-06 22:47:44,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:44,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1393902376, now seen corresponding path program 1 times [2023-11-06 22:47:44,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:44,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22994927] [2023-11-06 22:47:44,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:44,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:47:44,075 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:47:44,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:47:44,112 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:47:44,112 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:47:44,114 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 27 remaining) [2023-11-06 22:47:44,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (25 of 27 remaining) [2023-11-06 22:47:44,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (24 of 27 remaining) [2023-11-06 22:47:44,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (23 of 27 remaining) [2023-11-06 22:47:44,118 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (22 of 27 remaining) [2023-11-06 22:47:44,118 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (21 of 27 remaining) [2023-11-06 22:47:44,119 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (20 of 27 remaining) [2023-11-06 22:47:44,119 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (19 of 27 remaining) [2023-11-06 22:47:44,119 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (18 of 27 remaining) [2023-11-06 22:47:44,120 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (17 of 27 remaining) [2023-11-06 22:47:44,120 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (16 of 27 remaining) [2023-11-06 22:47:44,121 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (15 of 27 remaining) [2023-11-06 22:47:44,122 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (14 of 27 remaining) [2023-11-06 22:47:44,123 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (13 of 27 remaining) [2023-11-06 22:47:44,123 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 27 remaining) [2023-11-06 22:47:44,124 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 27 remaining) [2023-11-06 22:47:44,124 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 27 remaining) [2023-11-06 22:47:44,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 27 remaining) [2023-11-06 22:47:44,129 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (8 of 27 remaining) [2023-11-06 22:47:44,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (7 of 27 remaining) [2023-11-06 22:47:44,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (6 of 27 remaining) [2023-11-06 22:47:44,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (5 of 27 remaining) [2023-11-06 22:47:44,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (4 of 27 remaining) [2023-11-06 22:47:44,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (3 of 27 remaining) [2023-11-06 22:47:44,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (2 of 27 remaining) [2023-11-06 22:47:44,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (1 of 27 remaining) [2023-11-06 22:47:44,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (0 of 27 remaining) [2023-11-06 22:47:44,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:47:44,134 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-06 22:47:44,139 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:47:44,141 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-06 22:47:44,186 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:47:44,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 196 transitions, 402 flow [2023-11-06 22:47:44,265 INFO L124 PetriNetUnfolderBase]: 17/220 cut-off events. [2023-11-06 22:47:44,265 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:47:44,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 220 events. 17/220 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 508 event pairs, 0 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 181. Up to 6 conditions per place. [2023-11-06 22:47:44,274 INFO L82 GeneralOperation]: Start removeDead. Operand has 186 places, 196 transitions, 402 flow [2023-11-06 22:47:44,279 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 186 places, 196 transitions, 402 flow [2023-11-06 22:47:44,279 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:47:44,285 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 186 places, 196 transitions, 402 flow [2023-11-06 22:47:44,285 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 186 places, 196 transitions, 402 flow [2023-11-06 22:47:44,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 196 transitions, 402 flow [2023-11-06 22:47:44,341 INFO L124 PetriNetUnfolderBase]: 17/220 cut-off events. [2023-11-06 22:47:44,341 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:47:44,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 220 events. 17/220 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 508 event pairs, 0 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 181. Up to 6 conditions per place. [2023-11-06 22:47:44,359 INFO L119 LiptonReduction]: Number of co-enabled transitions 18984 [2023-11-06 22:47:48,072 INFO L134 LiptonReduction]: Checked pairs total: 58110 [2023-11-06 22:47:48,072 INFO L136 LiptonReduction]: Total number of compositions: 158 [2023-11-06 22:47:48,075 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:47:48,076 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=LoopsAndPotentialCycles, 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;@3968e38a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:47:48,077 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2023-11-06 22:47:48,078 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:47:48,079 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-06 22:47:48,079 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:47:48,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:47:48,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:47:48,080 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-06 22:47:48,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:48,080 INFO L85 PathProgramCache]: Analyzing trace with hash 30585846, now seen corresponding path program 1 times [2023-11-06 22:47:48,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:48,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399873547] [2023-11-06 22:47:48,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:48,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:48,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:48,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:47:48,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:48,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399873547] [2023-11-06 22:47:48,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399873547] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:48,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:48,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:47:48,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876199525] [2023-11-06 22:47:48,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:48,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:47:48,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:48,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:47:48,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:47:48,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 354 [2023-11-06 22:47:48,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 100 transitions, 210 flow. Second operand has 2 states, 2 states have (on average 170.0) internal successors, (340), 2 states have internal predecessors, (340), 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) [2023-11-06 22:47:48,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:47:48,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 354 [2023-11-06 22:47:48,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:47:48,430 INFO L124 PetriNetUnfolderBase]: 535/1700 cut-off events. [2023-11-06 22:47:48,430 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2023-11-06 22:47:48,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2661 conditions, 1700 events. 535/1700 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 12343 event pairs, 519 based on Foata normal form. 112/1557 useless extension candidates. Maximal degree in co-relation 1388. Up to 914 conditions per place. [2023-11-06 22:47:48,444 INFO L140 encePairwiseOnDemand]: 335/354 looper letters, 29 selfloop transitions, 0 changer transitions 0/79 dead transitions. [2023-11-06 22:47:48,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 79 transitions, 226 flow [2023-11-06 22:47:48,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:47:48,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:47:48,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 384 transitions. [2023-11-06 22:47:48,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5423728813559322 [2023-11-06 22:47:48,448 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 384 transitions. [2023-11-06 22:47:48,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 384 transitions. [2023-11-06 22:47:48,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:47:48,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 384 transitions. [2023-11-06 22:47:48,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 192.0) internal successors, (384), 2 states have internal predecessors, (384), 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) [2023-11-06 22:47:48,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 354.0) internal successors, (1062), 3 states have internal predecessors, (1062), 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) [2023-11-06 22:47:48,455 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 354.0) internal successors, (1062), 3 states have internal predecessors, (1062), 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) [2023-11-06 22:47:48,455 INFO L175 Difference]: Start difference. First operand has 95 places, 100 transitions, 210 flow. Second operand 2 states and 384 transitions. [2023-11-06 22:47:48,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 79 transitions, 226 flow [2023-11-06 22:47:48,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 79 transitions, 226 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:47:48,459 INFO L231 Difference]: Finished difference. Result has 83 places, 79 transitions, 168 flow [2023-11-06 22:47:48,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=168, PETRI_PLACES=83, PETRI_TRANSITIONS=79} [2023-11-06 22:47:48,460 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -12 predicate places. [2023-11-06 22:47:48,460 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 79 transitions, 168 flow [2023-11-06 22:47:48,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 170.0) internal successors, (340), 2 states have internal predecessors, (340), 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) [2023-11-06 22:47:48,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:47:48,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:47:48,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:47:48,462 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err5ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-06 22:47:48,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:48,462 INFO L85 PathProgramCache]: Analyzing trace with hash -671717631, now seen corresponding path program 1 times [2023-11-06 22:47:48,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:48,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522747372] [2023-11-06 22:47:48,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:48,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:48,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:48,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:47:48,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:48,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522747372] [2023-11-06 22:47:48,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522747372] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:48,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:48,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:47:48,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375852126] [2023-11-06 22:47:48,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:48,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:47:48,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:48,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:47:48,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:47:48,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 354 [2023-11-06 22:47:48,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 79 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 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) [2023-11-06 22:47:48,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:47:48,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 354 [2023-11-06 22:47:48,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:47:48,988 INFO L124 PetriNetUnfolderBase]: 927/2413 cut-off events. [2023-11-06 22:47:48,988 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2023-11-06 22:47:48,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4074 conditions, 2413 events. 927/2413 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 17395 event pairs, 402 based on Foata normal form. 0/2161 useless extension candidates. Maximal degree in co-relation 4069. Up to 1295 conditions per place. [2023-11-06 22:47:49,008 INFO L140 encePairwiseOnDemand]: 336/354 looper letters, 58 selfloop transitions, 14 changer transitions 0/112 dead transitions. [2023-11-06 22:47:49,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 112 transitions, 383 flow [2023-11-06 22:47:49,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:47:49,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:47:49,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 538 transitions. [2023-11-06 22:47:49,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5065913370998116 [2023-11-06 22:47:49,014 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 538 transitions. [2023-11-06 22:47:49,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 538 transitions. [2023-11-06 22:47:49,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:47:49,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 538 transitions. [2023-11-06 22:47:49,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 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) [2023-11-06 22:47:49,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 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) [2023-11-06 22:47:49,023 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 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) [2023-11-06 22:47:49,023 INFO L175 Difference]: Start difference. First operand has 83 places, 79 transitions, 168 flow. Second operand 3 states and 538 transitions. [2023-11-06 22:47:49,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 112 transitions, 383 flow [2023-11-06 22:47:49,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 112 transitions, 383 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:47:49,029 INFO L231 Difference]: Finished difference. Result has 87 places, 93 transitions, 288 flow [2023-11-06 22:47:49,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=87, PETRI_TRANSITIONS=93} [2023-11-06 22:47:49,032 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -8 predicate places. [2023-11-06 22:47:49,033 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 93 transitions, 288 flow [2023-11-06 22:47:49,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 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) [2023-11-06 22:47:49,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:47:49,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:49,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:47:49,039 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-06 22:47:49,039 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:49,039 INFO L85 PathProgramCache]: Analyzing trace with hash -886436549, now seen corresponding path program 1 times [2023-11-06 22:47:49,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:49,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610950923] [2023-11-06 22:47:49,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:49,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:49,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:49,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:47:49,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:49,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610950923] [2023-11-06 22:47:49,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610950923] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:49,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:49,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:47:49,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180060807] [2023-11-06 22:47:49,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:49,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:47:49,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:49,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:47:49,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:47:49,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 354 [2023-11-06 22:47:49,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 93 transitions, 288 flow. Second operand has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 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) [2023-11-06 22:47:49,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:47:49,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 354 [2023-11-06 22:47:49,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:47:49,759 INFO L124 PetriNetUnfolderBase]: 1842/4133 cut-off events. [2023-11-06 22:47:49,760 INFO L125 PetriNetUnfolderBase]: For 557/567 co-relation queries the response was YES. [2023-11-06 22:47:49,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8241 conditions, 4133 events. 1842/4133 cut-off events. For 557/567 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 31316 event pairs, 770 based on Foata normal form. 0/3906 useless extension candidates. Maximal degree in co-relation 8234. Up to 1666 conditions per place. [2023-11-06 22:47:49,857 INFO L140 encePairwiseOnDemand]: 332/354 looper letters, 80 selfloop transitions, 16 changer transitions 0/133 dead transitions. [2023-11-06 22:47:49,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 133 transitions, 583 flow [2023-11-06 22:47:49,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:47:49,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:47:49,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 532 transitions. [2023-11-06 22:47:49,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5009416195856874 [2023-11-06 22:47:49,861 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 532 transitions. [2023-11-06 22:47:49,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 532 transitions. [2023-11-06 22:47:49,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:47:49,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 532 transitions. [2023-11-06 22:47:49,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 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) [2023-11-06 22:47:49,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 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) [2023-11-06 22:47:49,868 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 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) [2023-11-06 22:47:49,868 INFO L175 Difference]: Start difference. First operand has 87 places, 93 transitions, 288 flow. Second operand 3 states and 532 transitions. [2023-11-06 22:47:49,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 133 transitions, 583 flow [2023-11-06 22:47:49,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 133 transitions, 553 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:47:49,891 INFO L231 Difference]: Finished difference. Result has 89 places, 109 transitions, 400 flow [2023-11-06 22:47:49,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=400, PETRI_PLACES=89, PETRI_TRANSITIONS=109} [2023-11-06 22:47:49,893 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -6 predicate places. [2023-11-06 22:47:49,894 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 109 transitions, 400 flow [2023-11-06 22:47:49,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 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) [2023-11-06 22:47:49,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:47:49,894 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-06 22:47:49,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:47:49,895 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-06 22:47:49,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:49,895 INFO L85 PathProgramCache]: Analyzing trace with hash -2071597218, now seen corresponding path program 1 times [2023-11-06 22:47:49,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:49,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364909374] [2023-11-06 22:47:49,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:49,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:49,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:47:49,918 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:47:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:47:49,935 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:47:49,939 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:47:49,939 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (39 of 40 remaining) [2023-11-06 22:47:49,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (38 of 40 remaining) [2023-11-06 22:47:49,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (37 of 40 remaining) [2023-11-06 22:47:49,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (36 of 40 remaining) [2023-11-06 22:47:49,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (35 of 40 remaining) [2023-11-06 22:47:49,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (34 of 40 remaining) [2023-11-06 22:47:49,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (33 of 40 remaining) [2023-11-06 22:47:49,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (32 of 40 remaining) [2023-11-06 22:47:49,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (31 of 40 remaining) [2023-11-06 22:47:49,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (30 of 40 remaining) [2023-11-06 22:47:49,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (29 of 40 remaining) [2023-11-06 22:47:49,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (28 of 40 remaining) [2023-11-06 22:47:49,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (27 of 40 remaining) [2023-11-06 22:47:49,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (26 of 40 remaining) [2023-11-06 22:47:49,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (25 of 40 remaining) [2023-11-06 22:47:49,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (24 of 40 remaining) [2023-11-06 22:47:49,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (23 of 40 remaining) [2023-11-06 22:47:49,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (22 of 40 remaining) [2023-11-06 22:47:49,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (21 of 40 remaining) [2023-11-06 22:47:49,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (20 of 40 remaining) [2023-11-06 22:47:49,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (19 of 40 remaining) [2023-11-06 22:47:49,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (18 of 40 remaining) [2023-11-06 22:47:49,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (17 of 40 remaining) [2023-11-06 22:47:49,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (16 of 40 remaining) [2023-11-06 22:47:49,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (15 of 40 remaining) [2023-11-06 22:47:49,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (14 of 40 remaining) [2023-11-06 22:47:49,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (13 of 40 remaining) [2023-11-06 22:47:49,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 40 remaining) [2023-11-06 22:47:49,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 40 remaining) [2023-11-06 22:47:49,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 40 remaining) [2023-11-06 22:47:49,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 40 remaining) [2023-11-06 22:47:49,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (8 of 40 remaining) [2023-11-06 22:47:49,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (7 of 40 remaining) [2023-11-06 22:47:49,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (6 of 40 remaining) [2023-11-06 22:47:49,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (5 of 40 remaining) [2023-11-06 22:47:49,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (4 of 40 remaining) [2023-11-06 22:47:49,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (3 of 40 remaining) [2023-11-06 22:47:49,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (2 of 40 remaining) [2023-11-06 22:47:49,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (1 of 40 remaining) [2023-11-06 22:47:49,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (0 of 40 remaining) [2023-11-06 22:47:49,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:47:49,950 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-06 22:47:49,951 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:47:49,951 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-06 22:47:49,998 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:47:50,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 266 places, 281 transitions, 580 flow [2023-11-06 22:47:50,060 INFO L124 PetriNetUnfolderBase]: 25/318 cut-off events. [2023-11-06 22:47:50,060 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 22:47:50,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 318 events. 25/318 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1004 event pairs, 0 based on Foata normal form. 0/250 useless extension candidates. Maximal degree in co-relation 265. Up to 8 conditions per place. [2023-11-06 22:47:50,064 INFO L82 GeneralOperation]: Start removeDead. Operand has 266 places, 281 transitions, 580 flow [2023-11-06 22:47:50,070 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 266 places, 281 transitions, 580 flow [2023-11-06 22:47:50,070 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:47:50,071 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 266 places, 281 transitions, 580 flow [2023-11-06 22:47:50,071 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 266 places, 281 transitions, 580 flow [2023-11-06 22:47:50,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 266 places, 281 transitions, 580 flow [2023-11-06 22:47:50,190 INFO L124 PetriNetUnfolderBase]: 25/318 cut-off events. [2023-11-06 22:47:50,190 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 22:47:50,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 318 events. 25/318 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1004 event pairs, 0 based on Foata normal form. 0/250 useless extension candidates. Maximal degree in co-relation 265. Up to 8 conditions per place. [2023-11-06 22:47:50,224 INFO L119 LiptonReduction]: Number of co-enabled transitions 49896 [2023-11-06 22:47:55,674 INFO L134 LiptonReduction]: Checked pairs total: 157890 [2023-11-06 22:47:55,674 INFO L136 LiptonReduction]: Total number of compositions: 227 [2023-11-06 22:47:55,677 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:47:55,677 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=LoopsAndPotentialCycles, 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;@3968e38a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:47:55,677 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2023-11-06 22:47:55,679 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:47:55,680 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-06 22:47:55,680 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:47:55,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:47:55,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:47:55,680 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err4ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2023-11-06 22:47:55,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:55,681 INFO L85 PathProgramCache]: Analyzing trace with hash 48819359, now seen corresponding path program 1 times [2023-11-06 22:47:55,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:55,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121333764] [2023-11-06 22:47:55,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:55,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:55,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:55,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:47:55,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:55,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121333764] [2023-11-06 22:47:55,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121333764] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:55,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:55,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:47:55,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263554603] [2023-11-06 22:47:55,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:55,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:47:55,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:55,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:47:55,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:47:55,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 508 [2023-11-06 22:47:55,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 147 transitions, 312 flow. Second operand has 2 states, 2 states have (on average 242.0) internal successors, (484), 2 states have internal predecessors, (484), 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) [2023-11-06 22:47:55,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:47:55,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 508 [2023-11-06 22:47:55,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:47:59,369 INFO L124 PetriNetUnfolderBase]: 10734/24359 cut-off events. [2023-11-06 22:47:59,369 INFO L125 PetriNetUnfolderBase]: For 1177/1177 co-relation queries the response was YES. [2023-11-06 22:47:59,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40461 conditions, 24359 events. 10734/24359 cut-off events. For 1177/1177 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 244114 event pairs, 10620 based on Foata normal form. 1068/21897 useless extension candidates. Maximal degree in co-relation 10070. Up to 15381 conditions per place. [2023-11-06 22:47:59,568 INFO L140 encePairwiseOnDemand]: 480/508 looper letters, 41 selfloop transitions, 0 changer transitions 0/113 dead transitions. [2023-11-06 22:47:59,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 113 transitions, 326 flow [2023-11-06 22:47:59,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:47:59,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:47:59,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 549 transitions. [2023-11-06 22:47:59,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403543307086615 [2023-11-06 22:47:59,572 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 549 transitions. [2023-11-06 22:47:59,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 549 transitions. [2023-11-06 22:47:59,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:47:59,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 549 transitions. [2023-11-06 22:47:59,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 274.5) internal successors, (549), 2 states have internal predecessors, (549), 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) [2023-11-06 22:47:59,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 508.0) internal successors, (1524), 3 states have internal predecessors, (1524), 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) [2023-11-06 22:47:59,580 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 508.0) internal successors, (1524), 3 states have internal predecessors, (1524), 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) [2023-11-06 22:47:59,580 INFO L175 Difference]: Start difference. First operand has 139 places, 147 transitions, 312 flow. Second operand 2 states and 549 transitions. [2023-11-06 22:47:59,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 113 transitions, 326 flow [2023-11-06 22:47:59,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 113 transitions, 324 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-06 22:47:59,687 INFO L231 Difference]: Finished difference. Result has 118 places, 113 transitions, 242 flow [2023-11-06 22:47:59,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=508, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=242, PETRI_PLACES=118, PETRI_TRANSITIONS=113} [2023-11-06 22:47:59,688 INFO L281 CegarLoopForPetriNet]: 139 programPoint places, -21 predicate places. [2023-11-06 22:47:59,688 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 113 transitions, 242 flow [2023-11-06 22:47:59,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 242.0) internal successors, (484), 2 states have internal predecessors, (484), 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) [2023-11-06 22:47:59,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:47:59,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:47:59,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:47:59,689 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err5ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2023-11-06 22:47:59,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:59,689 INFO L85 PathProgramCache]: Analyzing trace with hash -329153754, now seen corresponding path program 1 times [2023-11-06 22:47:59,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:59,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068748360] [2023-11-06 22:47:59,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:59,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:59,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:59,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:47:59,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:59,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068748360] [2023-11-06 22:47:59,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068748360] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:59,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:59,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:47:59,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964782924] [2023-11-06 22:47:59,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:59,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:47:59,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:59,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:47:59,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:47:59,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 508 [2023-11-06 22:47:59,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 113 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 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) [2023-11-06 22:47:59,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:47:59,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 508 [2023-11-06 22:47:59,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:48:05,244 INFO L124 PetriNetUnfolderBase]: 26099/50362 cut-off events. [2023-11-06 22:48:05,245 INFO L125 PetriNetUnfolderBase]: For 1020/1020 co-relation queries the response was YES. [2023-11-06 22:48:05,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89234 conditions, 50362 events. 26099/50362 cut-off events. For 1020/1020 co-relation queries the response was YES. Maximal size of possible extension queue 1169. Compared 489336 event pairs, 13086 based on Foata normal form. 0/45057 useless extension candidates. Maximal degree in co-relation 89228. Up to 28645 conditions per place. [2023-11-06 22:48:05,859 INFO L140 encePairwiseOnDemand]: 481/508 looper letters, 81 selfloop transitions, 21 changer transitions 0/160 dead transitions. [2023-11-06 22:48:05,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 160 transitions, 550 flow [2023-11-06 22:48:05,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:48:05,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:48:05,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 765 transitions. [2023-11-06 22:48:05,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5019685039370079 [2023-11-06 22:48:05,863 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 765 transitions. [2023-11-06 22:48:05,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 765 transitions. [2023-11-06 22:48:05,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:48:05,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 765 transitions. [2023-11-06 22:48:05,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 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) [2023-11-06 22:48:05,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 508.0) internal successors, (2032), 4 states have internal predecessors, (2032), 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) [2023-11-06 22:48:05,873 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 508.0) internal successors, (2032), 4 states have internal predecessors, (2032), 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) [2023-11-06 22:48:05,874 INFO L175 Difference]: Start difference. First operand has 118 places, 113 transitions, 242 flow. Second operand 3 states and 765 transitions. [2023-11-06 22:48:05,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 160 transitions, 550 flow [2023-11-06 22:48:05,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 160 transitions, 550 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:48:05,886 INFO L231 Difference]: Finished difference. Result has 122 places, 134 transitions, 422 flow [2023-11-06 22:48:05,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=508, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=422, PETRI_PLACES=122, PETRI_TRANSITIONS=134} [2023-11-06 22:48:05,889 INFO L281 CegarLoopForPetriNet]: 139 programPoint places, -17 predicate places. [2023-11-06 22:48:05,889 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 134 transitions, 422 flow [2023-11-06 22:48:05,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 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) [2023-11-06 22:48:05,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:48:05,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:05,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:48:05,891 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2023-11-06 22:48:05,891 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:05,891 INFO L85 PathProgramCache]: Analyzing trace with hash -407715125, now seen corresponding path program 1 times [2023-11-06 22:48:05,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:05,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079097363] [2023-11-06 22:48:05,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:05,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:05,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:05,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:05,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:05,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079097363] [2023-11-06 22:48:05,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079097363] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:48:05,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:48:05,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:48:05,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027379689] [2023-11-06 22:48:05,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:05,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:48:05,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:05,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:48:05,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:48:06,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 508 [2023-11-06 22:48:06,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 134 transitions, 422 flow. Second operand has 3 states, 3 states have (on average 209.66666666666666) internal successors, (629), 3 states have internal predecessors, (629), 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) [2023-11-06 22:48:06,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:48:06,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 508 [2023-11-06 22:48:06,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:48:23,272 INFO L124 PetriNetUnfolderBase]: 97446/168052 cut-off events. [2023-11-06 22:48:23,272 INFO L125 PetriNetUnfolderBase]: For 29708/30658 co-relation queries the response was YES. [2023-11-06 22:48:23,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350830 conditions, 168052 events. 97446/168052 cut-off events. For 29708/30658 co-relation queries the response was YES. Maximal size of possible extension queue 3975. Compared 1711091 event pairs, 42331 based on Foata normal form. 2/154302 useless extension candidates. Maximal degree in co-relation 350822. Up to 72319 conditions per place. [2023-11-06 22:48:24,715 INFO L140 encePairwiseOnDemand]: 475/508 looper letters, 129 selfloop transitions, 24 changer transitions 0/205 dead transitions. [2023-11-06 22:48:24,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 205 transitions, 958 flow [2023-11-06 22:48:24,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:48:24,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:48:24,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 757 transitions. [2023-11-06 22:48:24,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4967191601049869 [2023-11-06 22:48:24,718 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 757 transitions. [2023-11-06 22:48:24,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 757 transitions. [2023-11-06 22:48:24,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:48:24,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 757 transitions. [2023-11-06 22:48:24,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 252.33333333333334) internal successors, (757), 3 states have internal predecessors, (757), 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) [2023-11-06 22:48:24,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 508.0) internal successors, (2032), 4 states have internal predecessors, (2032), 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) [2023-11-06 22:48:24,728 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 508.0) internal successors, (2032), 4 states have internal predecessors, (2032), 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) [2023-11-06 22:48:24,728 INFO L175 Difference]: Start difference. First operand has 122 places, 134 transitions, 422 flow. Second operand 3 states and 757 transitions. [2023-11-06 22:48:24,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 205 transitions, 958 flow [2023-11-06 22:48:33,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 205 transitions, 890 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:48:33,953 INFO L231 Difference]: Finished difference. Result has 124 places, 158 transitions, 590 flow [2023-11-06 22:48:33,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=508, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=590, PETRI_PLACES=124, PETRI_TRANSITIONS=158} [2023-11-06 22:48:33,954 INFO L281 CegarLoopForPetriNet]: 139 programPoint places, -15 predicate places. [2023-11-06 22:48:33,955 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 158 transitions, 590 flow [2023-11-06 22:48:33,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.66666666666666) internal successors, (629), 3 states have internal predecessors, (629), 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) [2023-11-06 22:48:33,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:48:33,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:33,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:48:33,956 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err7ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2023-11-06 22:48:33,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:33,957 INFO L85 PathProgramCache]: Analyzing trace with hash 2045968815, now seen corresponding path program 1 times [2023-11-06 22:48:33,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:33,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665360450] [2023-11-06 22:48:33,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:33,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:33,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:33,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:33,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:33,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665360450] [2023-11-06 22:48:33,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665360450] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:48:33,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:48:33,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:48:33,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599722730] [2023-11-06 22:48:33,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:33,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:48:33,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:33,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:48:33,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:48:34,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 508 [2023-11-06 22:48:34,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 158 transitions, 590 flow. Second operand has 3 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:34,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:48:34,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 508 [2023-11-06 22:48:34,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:48:49,016 INFO L124 PetriNetUnfolderBase]: 75389/141250 cut-off events. [2023-11-06 22:48:49,016 INFO L125 PetriNetUnfolderBase]: For 64616/68234 co-relation queries the response was YES. [2023-11-06 22:48:49,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336486 conditions, 141250 events. 75389/141250 cut-off events. For 64616/68234 co-relation queries the response was YES. Maximal size of possible extension queue 3434. Compared 1534368 event pairs, 49780 based on Foata normal form. 338/129421 useless extension candidates. Maximal degree in co-relation 336477. Up to 94421 conditions per place. [2023-11-06 22:48:50,310 INFO L140 encePairwiseOnDemand]: 494/508 looper letters, 110 selfloop transitions, 25 changer transitions 0/213 dead transitions. [2023-11-06 22:48:50,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 213 transitions, 1078 flow [2023-11-06 22:48:50,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:48:50,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:48:50,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 752 transitions. [2023-11-06 22:48:50,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49343832020997375 [2023-11-06 22:48:50,314 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 752 transitions. [2023-11-06 22:48:50,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 752 transitions. [2023-11-06 22:48:50,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:48:50,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 752 transitions. [2023-11-06 22:48:50,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 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) [2023-11-06 22:48:50,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 508.0) internal successors, (2032), 4 states have internal predecessors, (2032), 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) [2023-11-06 22:48:50,322 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 508.0) internal successors, (2032), 4 states have internal predecessors, (2032), 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) [2023-11-06 22:48:50,322 INFO L175 Difference]: Start difference. First operand has 124 places, 158 transitions, 590 flow. Second operand 3 states and 752 transitions. [2023-11-06 22:48:50,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 213 transitions, 1078 flow [2023-11-06 22:48:50,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 213 transitions, 1008 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:48:50,452 INFO L231 Difference]: Finished difference. Result has 126 places, 181 transitions, 780 flow [2023-11-06 22:48:50,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=508, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=780, PETRI_PLACES=126, PETRI_TRANSITIONS=181} [2023-11-06 22:48:50,453 INFO L281 CegarLoopForPetriNet]: 139 programPoint places, -13 predicate places. [2023-11-06 22:48:50,454 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 181 transitions, 780 flow [2023-11-06 22:48:50,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:50,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:48:50,455 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-11-06 22:48:50,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:48:50,455 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2023-11-06 22:48:50,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:50,455 INFO L85 PathProgramCache]: Analyzing trace with hash 374122876, now seen corresponding path program 1 times [2023-11-06 22:48:50,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:50,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511995291] [2023-11-06 22:48:50,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:50,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:50,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:48:50,473 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:48:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:48:50,503 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:48:50,503 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:48:50,503 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (52 of 53 remaining) [2023-11-06 22:48:50,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (51 of 53 remaining) [2023-11-06 22:48:50,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (50 of 53 remaining) [2023-11-06 22:48:50,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (49 of 53 remaining) [2023-11-06 22:48:50,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (48 of 53 remaining) [2023-11-06 22:48:50,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (47 of 53 remaining) [2023-11-06 22:48:50,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (46 of 53 remaining) [2023-11-06 22:48:50,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (45 of 53 remaining) [2023-11-06 22:48:50,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (44 of 53 remaining) [2023-11-06 22:48:50,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (43 of 53 remaining) [2023-11-06 22:48:50,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (42 of 53 remaining) [2023-11-06 22:48:50,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (41 of 53 remaining) [2023-11-06 22:48:50,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (40 of 53 remaining) [2023-11-06 22:48:50,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (39 of 53 remaining) [2023-11-06 22:48:50,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (38 of 53 remaining) [2023-11-06 22:48:50,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (37 of 53 remaining) [2023-11-06 22:48:50,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (36 of 53 remaining) [2023-11-06 22:48:50,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (35 of 53 remaining) [2023-11-06 22:48:50,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (34 of 53 remaining) [2023-11-06 22:48:50,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (33 of 53 remaining) [2023-11-06 22:48:50,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (32 of 53 remaining) [2023-11-06 22:48:50,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (31 of 53 remaining) [2023-11-06 22:48:50,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (30 of 53 remaining) [2023-11-06 22:48:50,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (29 of 53 remaining) [2023-11-06 22:48:50,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (28 of 53 remaining) [2023-11-06 22:48:50,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (27 of 53 remaining) [2023-11-06 22:48:50,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (26 of 53 remaining) [2023-11-06 22:48:50,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (25 of 53 remaining) [2023-11-06 22:48:50,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (24 of 53 remaining) [2023-11-06 22:48:50,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (23 of 53 remaining) [2023-11-06 22:48:50,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (22 of 53 remaining) [2023-11-06 22:48:50,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (21 of 53 remaining) [2023-11-06 22:48:50,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (20 of 53 remaining) [2023-11-06 22:48:50,509 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (19 of 53 remaining) [2023-11-06 22:48:50,509 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (18 of 53 remaining) [2023-11-06 22:48:50,509 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (17 of 53 remaining) [2023-11-06 22:48:50,509 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (16 of 53 remaining) [2023-11-06 22:48:50,509 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (15 of 53 remaining) [2023-11-06 22:48:50,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (14 of 53 remaining) [2023-11-06 22:48:50,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (13 of 53 remaining) [2023-11-06 22:48:50,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 53 remaining) [2023-11-06 22:48:50,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 53 remaining) [2023-11-06 22:48:50,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 53 remaining) [2023-11-06 22:48:50,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 53 remaining) [2023-11-06 22:48:50,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (8 of 53 remaining) [2023-11-06 22:48:50,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (7 of 53 remaining) [2023-11-06 22:48:50,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (6 of 53 remaining) [2023-11-06 22:48:50,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (5 of 53 remaining) [2023-11-06 22:48:50,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (4 of 53 remaining) [2023-11-06 22:48:50,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (3 of 53 remaining) [2023-11-06 22:48:50,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (2 of 53 remaining) [2023-11-06 22:48:50,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (1 of 53 remaining) [2023-11-06 22:48:50,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (0 of 53 remaining) [2023-11-06 22:48:50,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:48:50,514 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-06 22:48:50,514 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:48:50,515 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-06 22:48:50,561 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:48:50,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 346 places, 366 transitions, 760 flow [2023-11-06 22:48:50,656 INFO L124 PetriNetUnfolderBase]: 33/416 cut-off events. [2023-11-06 22:48:50,656 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-06 22:48:50,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 435 conditions, 416 events. 33/416 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1557 event pairs, 0 based on Foata normal form. 0/326 useless extension candidates. Maximal degree in co-relation 349. Up to 10 conditions per place. [2023-11-06 22:48:50,662 INFO L82 GeneralOperation]: Start removeDead. Operand has 346 places, 366 transitions, 760 flow [2023-11-06 22:48:50,671 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 346 places, 366 transitions, 760 flow [2023-11-06 22:48:50,672 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:48:50,672 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 346 places, 366 transitions, 760 flow [2023-11-06 22:48:50,672 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 346 places, 366 transitions, 760 flow [2023-11-06 22:48:50,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 346 places, 366 transitions, 760 flow [2023-11-06 22:48:50,760 INFO L124 PetriNetUnfolderBase]: 33/416 cut-off events. [2023-11-06 22:48:50,761 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-06 22:48:50,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 435 conditions, 416 events. 33/416 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1557 event pairs, 0 based on Foata normal form. 0/326 useless extension candidates. Maximal degree in co-relation 349. Up to 10 conditions per place. [2023-11-06 22:48:50,797 INFO L119 LiptonReduction]: Number of co-enabled transitions 95088 [2023-11-06 22:48:57,054 INFO L134 LiptonReduction]: Checked pairs total: 311927 [2023-11-06 22:48:57,054 INFO L136 LiptonReduction]: Total number of compositions: 287 [2023-11-06 22:48:57,056 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:48:57,056 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=LoopsAndPotentialCycles, 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;@3968e38a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:48:57,056 INFO L358 AbstractCegarLoop]: Starting to check reachability of 66 error locations. [2023-11-06 22:48:57,058 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:48:57,058 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-06 22:48:57,058 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:48:57,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:48:57,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:48:57,058 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 62 more)] === [2023-11-06 22:48:57,059 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:57,059 INFO L85 PathProgramCache]: Analyzing trace with hash 71577408, now seen corresponding path program 1 times [2023-11-06 22:48:57,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:57,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855818528] [2023-11-06 22:48:57,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:57,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:57,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:57,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:57,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:57,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855818528] [2023-11-06 22:48:57,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855818528] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:48:57,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:48:57,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:48:57,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704747408] [2023-11-06 22:48:57,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:57,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:48:57,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:57,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:48:57,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:48:57,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 653 [2023-11-06 22:48:57,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 198 transitions, 424 flow. Second operand has 2 states, 2 states have (on average 314.0) internal successors, (628), 2 states have internal predecessors, (628), 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) [2023-11-06 22:48:57,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:48:57,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 653 [2023-11-06 22:48:57,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand