./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.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_0b643b64-ad77-4546-aaeb-fc9d9d326359/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b643b64-ad77-4546-aaeb-fc9d9d326359/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_0b643b64-ad77-4546-aaeb-fc9d9d326359/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b643b64-ad77-4546-aaeb-fc9d9d326359/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b643b64-ad77-4546-aaeb-fc9d9d326359/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_0b643b64-ad77-4546-aaeb-fc9d9d326359/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 13ffae79fd42fd88852ffaba2bbbf2601df90fdda2b5dc6bd9b6228e2cf540c7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:25:39,706 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:25:39,825 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b643b64-ad77-4546-aaeb-fc9d9d326359/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-06 22:25:39,829 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:25:39,830 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:25:39,865 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:25:39,866 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:25:39,867 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:25:39,868 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:25:39,869 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:25:39,870 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:25:39,870 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:25:39,871 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:25:39,872 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:25:39,872 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:25:39,873 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:25:39,873 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:25:39,874 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:25:39,874 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:25:39,875 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:25:39,875 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:25:39,876 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:25:39,876 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-06 22:25:39,877 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:25:39,877 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:25:39,878 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:25:39,878 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:25:39,879 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:25:39,879 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:25:39,880 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:25:39,880 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:25:39,880 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:25:39,881 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:25:39,881 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:25:39,882 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:25:39,882 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:25:39,883 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:25:39,883 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:25:39,883 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:25:39,884 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:25:39,884 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:25:39,884 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_0b643b64-ad77-4546-aaeb-fc9d9d326359/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b643b64-ad77-4546-aaeb-fc9d9d326359/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13ffae79fd42fd88852ffaba2bbbf2601df90fdda2b5dc6bd9b6228e2cf540c7 [2023-11-06 22:25:40,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:25:40,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:25:40,232 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:25:40,234 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:25:40,234 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:25:40,236 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b643b64-ad77-4546-aaeb-fc9d9d326359/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i [2023-11-06 22:25:43,602 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:25:43,921 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:25:43,922 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b643b64-ad77-4546-aaeb-fc9d9d326359/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i [2023-11-06 22:25:43,942 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b643b64-ad77-4546-aaeb-fc9d9d326359/bin/uautomizer-verify-WvqO1wxjHP/data/e58702de4/b85c420a1c994f349bc83fe9ca511ff6/FLAGfa8a0e78b [2023-11-06 22:25:43,958 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b643b64-ad77-4546-aaeb-fc9d9d326359/bin/uautomizer-verify-WvqO1wxjHP/data/e58702de4/b85c420a1c994f349bc83fe9ca511ff6 [2023-11-06 22:25:43,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:25:43,963 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:25:43,964 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:25:43,965 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:25:43,971 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:25:43,972 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:25:43" (1/1) ... [2023-11-06 22:25:43,973 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4489f551 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:43, skipping insertion in model container [2023-11-06 22:25:43,973 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:25:43" (1/1) ... [2023-11-06 22:25:44,032 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:25:44,232 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-06 22:25:44,441 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:25:44,455 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:25:44,492 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-06 22:25:44,537 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:25:44,586 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:25:44,586 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:25:44,586 WARN L672 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:25:44,595 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:25:44,596 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:44 WrapperNode [2023-11-06 22:25:44,596 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:25:44,598 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:25:44,598 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:25:44,598 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:25:44,607 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:44" (1/1) ... [2023-11-06 22:25:44,646 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:44" (1/1) ... [2023-11-06 22:25:44,695 INFO L138 Inliner]: procedures = 176, calls = 22, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 98 [2023-11-06 22:25:44,695 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:25:44,696 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:25:44,696 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:25:44,696 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:25:44,706 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:44" (1/1) ... [2023-11-06 22:25:44,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:44" (1/1) ... [2023-11-06 22:25:44,713 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:44" (1/1) ... [2023-11-06 22:25:44,714 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:44" (1/1) ... [2023-11-06 22:25:44,729 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:44" (1/1) ... [2023-11-06 22:25:44,732 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:44" (1/1) ... [2023-11-06 22:25:44,734 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:44" (1/1) ... [2023-11-06 22:25:44,736 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:44" (1/1) ... [2023-11-06 22:25:44,738 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:25:44,747 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:25:44,748 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:25:44,748 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:25:44,749 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:44" (1/1) ... [2023-11-06 22:25:44,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:25:44,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b643b64-ad77-4546-aaeb-fc9d9d326359/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:25:44,780 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b643b64-ad77-4546-aaeb-fc9d9d326359/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:25:44,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b643b64-ad77-4546-aaeb-fc9d9d326359/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:25:44,828 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-06 22:25:44,828 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-06 22:25:44,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:25:44,828 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:25:44,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:25:44,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:25:44,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:25:44,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:25:44,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:25:44,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:25:44,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:25:44,831 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 22:25:44,960 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:25:44,962 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:25:45,138 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:25:45,238 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:25:45,245 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 22:25:45,248 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:25:45 BoogieIcfgContainer [2023-11-06 22:25:45,249 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:25:45,252 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:25:45,254 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:25:45,258 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:25:45,258 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:25:43" (1/3) ... [2023-11-06 22:25:45,259 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a9914a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:25:45, skipping insertion in model container [2023-11-06 22:25:45,259 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:44" (2/3) ... [2023-11-06 22:25:45,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a9914a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:25:45, skipping insertion in model container [2023-11-06 22:25:45,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:25:45" (3/3) ... [2023-11-06 22:25:45,265 INFO L112 eAbstractionObserver]: Analyzing ICFG 39_rand_lock_p0_vs.i [2023-11-06 22:25:45,274 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:25:45,285 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:25:45,286 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-11-06 22:25:45,286 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:25:45,365 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:25:45,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 73 transitions, 150 flow [2023-11-06 22:25:45,501 INFO L124 PetriNetUnfolderBase]: 4/84 cut-off events. [2023-11-06 22:25:45,504 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:25:45,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 84 events. 4/84 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 79 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 60. Up to 4 conditions per place. [2023-11-06 22:25:45,511 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 73 transitions, 150 flow [2023-11-06 22:25:45,516 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 73 transitions, 150 flow [2023-11-06 22:25:45,520 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:25:45,536 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 73 transitions, 150 flow [2023-11-06 22:25:45,541 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 73 transitions, 150 flow [2023-11-06 22:25:45,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 73 transitions, 150 flow [2023-11-06 22:25:45,576 INFO L124 PetriNetUnfolderBase]: 4/84 cut-off events. [2023-11-06 22:25:45,579 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:25:45,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 84 events. 4/84 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 79 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 60. Up to 4 conditions per place. [2023-11-06 22:25:45,584 INFO L119 LiptonReduction]: Number of co-enabled transitions 1316 [2023-11-06 22:25:48,090 INFO L134 LiptonReduction]: Checked pairs total: 1160 [2023-11-06 22:25:48,091 INFO L136 LiptonReduction]: Total number of compositions: 80 [2023-11-06 22:25:48,109 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:25:48,117 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;@6f7d0751, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:25:48,117 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-11-06 22:25:48,122 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:25:48,122 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-06 22:25:48,123 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:25:48,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:48,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:25:48,124 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2023-11-06 22:25:48,130 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:48,131 INFO L85 PathProgramCache]: Analyzing trace with hash 13305129, now seen corresponding path program 1 times [2023-11-06 22:25:48,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:48,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392685975] [2023-11-06 22:25:48,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:48,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:48,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:48,351 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 22:25:48,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:48,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392685975] [2023-11-06 22:25:48,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392685975] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:48,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:25:48,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:25:48,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001814718] [2023-11-06 22:25:48,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:48,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:25:48,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:48,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:25:48,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:25:48,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 153 [2023-11-06 22:25:48,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 16 transitions, 36 flow. Second operand has 2 states, 2 states have (on average 61.0) internal successors, (122), 2 states have internal predecessors, (122), 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 22:25:48,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:48,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 153 [2023-11-06 22:25:48,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:48,459 INFO L124 PetriNetUnfolderBase]: 7/19 cut-off events. [2023-11-06 22:25:48,459 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:25:48,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 19 events. 7/19 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 4 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 30. Up to 19 conditions per place. [2023-11-06 22:25:48,462 INFO L140 encePairwiseOnDemand]: 145/153 looper letters, 7 selfloop transitions, 0 changer transitions 0/8 dead transitions. [2023-11-06 22:25:48,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 8 transitions, 34 flow [2023-11-06 22:25:48,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:25:48,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:25:48,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 133 transitions. [2023-11-06 22:25:48,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.434640522875817 [2023-11-06 22:25:48,486 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 133 transitions. [2023-11-06 22:25:48,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 133 transitions. [2023-11-06 22:25:48,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:48,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 133 transitions. [2023-11-06 22:25:48,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 66.5) internal successors, (133), 2 states have internal predecessors, (133), 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 22:25:48,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 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 22:25:48,514 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 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 22:25:48,517 INFO L175 Difference]: Start difference. First operand has 18 places, 16 transitions, 36 flow. Second operand 2 states and 133 transitions. [2023-11-06 22:25:48,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 8 transitions, 34 flow [2023-11-06 22:25:48,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 8 transitions, 34 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:25:48,523 INFO L231 Difference]: Finished difference. Result has 11 places, 8 transitions, 20 flow [2023-11-06 22:25:48,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=20, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=20, PETRI_PLACES=11, PETRI_TRANSITIONS=8} [2023-11-06 22:25:48,530 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -7 predicate places. [2023-11-06 22:25:48,531 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 8 transitions, 20 flow [2023-11-06 22:25:48,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 61.0) internal successors, (122), 2 states have internal predecessors, (122), 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 22:25:48,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:48,532 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-06 22:25:48,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:25:48,533 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2023-11-06 22:25:48,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:48,546 INFO L85 PathProgramCache]: Analyzing trace with hash -98708859, now seen corresponding path program 1 times [2023-11-06 22:25:48,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:48,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217289603] [2023-11-06 22:25:48,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:48,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:48,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:25:48,600 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:25:48,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:25:48,660 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:25:48,660 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:25:48,662 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2023-11-06 22:25:48,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2023-11-06 22:25:48,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2023-11-06 22:25:48,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2023-11-06 22:25:48,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2023-11-06 22:25:48,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2023-11-06 22:25:48,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2023-11-06 22:25:48,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2023-11-06 22:25:48,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2023-11-06 22:25:48,670 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2023-11-06 22:25:48,670 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2023-11-06 22:25:48,670 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2023-11-06 22:25:48,672 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2023-11-06 22:25:48,673 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2023-11-06 22:25:48,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2023-11-06 22:25:48,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:25:48,675 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-06 22:25:48,679 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:25:48,680 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-06 22:25:48,744 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:25:48,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 121 transitions, 252 flow [2023-11-06 22:25:48,817 INFO L124 PetriNetUnfolderBase]: 7/145 cut-off events. [2023-11-06 22:25:48,818 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:25:48,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 145 events. 7/145 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 280 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 107. Up to 6 conditions per place. [2023-11-06 22:25:48,821 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 121 transitions, 252 flow [2023-11-06 22:25:48,823 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 121 transitions, 252 flow [2023-11-06 22:25:48,824 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:25:48,824 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 121 transitions, 252 flow [2023-11-06 22:25:48,825 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 121 transitions, 252 flow [2023-11-06 22:25:48,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 121 transitions, 252 flow [2023-11-06 22:25:48,855 INFO L124 PetriNetUnfolderBase]: 7/145 cut-off events. [2023-11-06 22:25:48,856 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:25:48,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 145 events. 7/145 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 280 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 107. Up to 6 conditions per place. [2023-11-06 22:25:48,865 INFO L119 LiptonReduction]: Number of co-enabled transitions 7144 [2023-11-06 22:25:51,846 INFO L134 LiptonReduction]: Checked pairs total: 12267 [2023-11-06 22:25:51,847 INFO L136 LiptonReduction]: Total number of compositions: 113 [2023-11-06 22:25:51,849 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:25:51,851 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;@6f7d0751, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:25:51,851 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-06 22:25:51,854 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:25:51,854 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-11-06 22:25:51,854 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:25:51,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:51,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:25:51,855 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-11-06 22:25:51,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:51,855 INFO L85 PathProgramCache]: Analyzing trace with hash 21870804, now seen corresponding path program 1 times [2023-11-06 22:25:51,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:51,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574871005] [2023-11-06 22:25:51,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:51,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:51,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:51,888 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 22:25:51,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:51,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574871005] [2023-11-06 22:25:51,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574871005] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:51,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:25:51,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:25:51,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761769090] [2023-11-06 22:25:51,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:51,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:25:51,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:51,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:25:51,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:25:51,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 234 [2023-11-06 22:25:51,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 86 flow. Second operand has 2 states, 2 states have (on average 97.0) internal successors, (194), 2 states have internal predecessors, (194), 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 22:25:51,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:51,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 234 [2023-11-06 22:25:51,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:51,954 INFO L124 PetriNetUnfolderBase]: 121/251 cut-off events. [2023-11-06 22:25:51,954 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-06 22:25:51,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 482 conditions, 251 events. 121/251 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1046 event pairs, 95 based on Foata normal form. 0/204 useless extension candidates. Maximal degree in co-relation 188. Up to 208 conditions per place. [2023-11-06 22:25:51,958 INFO L140 encePairwiseOnDemand]: 221/234 looper letters, 16 selfloop transitions, 0 changer transitions 0/25 dead transitions. [2023-11-06 22:25:51,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 25 transitions, 92 flow [2023-11-06 22:25:51,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:25:51,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:25:51,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 219 transitions. [2023-11-06 22:25:51,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46794871794871795 [2023-11-06 22:25:51,962 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 219 transitions. [2023-11-06 22:25:51,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 219 transitions. [2023-11-06 22:25:51,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:51,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 219 transitions. [2023-11-06 22:25:51,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 109.5) internal successors, (219), 2 states have internal predecessors, (219), 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 22:25:51,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 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 22:25:51,967 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 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 22:25:51,968 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 86 flow. Second operand 2 states and 219 transitions. [2023-11-06 22:25:51,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 25 transitions, 92 flow [2023-11-06 22:25:51,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 25 transitions, 92 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:25:51,970 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 60 flow [2023-11-06 22:25:51,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=60, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2023-11-06 22:25:51,971 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -12 predicate places. [2023-11-06 22:25:51,971 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 60 flow [2023-11-06 22:25:51,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 97.0) internal successors, (194), 2 states have internal predecessors, (194), 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 22:25:51,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:51,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:51,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:25:51,973 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-11-06 22:25:51,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:51,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1281399573, now seen corresponding path program 1 times [2023-11-06 22:25:51,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:51,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245008076] [2023-11-06 22:25:51,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:51,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:51,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:52,030 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 22:25:52,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:52,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245008076] [2023-11-06 22:25:52,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245008076] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:52,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:25:52,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:25:52,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231730398] [2023-11-06 22:25:52,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:52,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:25:52,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:52,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:25:52,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:25:52,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 234 [2023-11-06 22:25:52,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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 22:25:52,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:52,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 234 [2023-11-06 22:25:52,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:52,157 INFO L124 PetriNetUnfolderBase]: 265/467 cut-off events. [2023-11-06 22:25:52,157 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-11-06 22:25:52,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 957 conditions, 467 events. 265/467 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2185 event pairs, 88 based on Foata normal form. 0/415 useless extension candidates. Maximal degree in co-relation 952. Up to 305 conditions per place. [2023-11-06 22:25:52,162 INFO L140 encePairwiseOnDemand]: 224/234 looper letters, 32 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2023-11-06 22:25:52,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 43 transitions, 181 flow [2023-11-06 22:25:52,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:25:52,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:25:52,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 309 transitions. [2023-11-06 22:25:52,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44017094017094016 [2023-11-06 22:25:52,167 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 309 transitions. [2023-11-06 22:25:52,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 309 transitions. [2023-11-06 22:25:52,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:52,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 309 transitions. [2023-11-06 22:25:52,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 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 22:25:52,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 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 22:25:52,173 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 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 22:25:52,174 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 60 flow. Second operand 3 states and 309 transitions. [2023-11-06 22:25:52,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 43 transitions, 181 flow [2023-11-06 22:25:52,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 43 transitions, 181 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:25:52,176 INFO L231 Difference]: Finished difference. Result has 33 places, 33 transitions, 128 flow [2023-11-06 22:25:52,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=33, PETRI_TRANSITIONS=33} [2023-11-06 22:25:52,178 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -8 predicate places. [2023-11-06 22:25:52,178 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 33 transitions, 128 flow [2023-11-06 22:25:52,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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 22:25:52,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:52,179 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-06 22:25:52,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:25:52,180 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-11-06 22:25:52,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:52,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1465801906, now seen corresponding path program 1 times [2023-11-06 22:25:52,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:52,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629619673] [2023-11-06 22:25:52,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:52,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:52,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:25:52,200 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:25:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:25:52,221 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:25:52,233 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:25:52,234 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-11-06 22:25:52,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-11-06 22:25:52,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-11-06 22:25:52,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-11-06 22:25:52,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-11-06 22:25:52,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-11-06 22:25:52,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-11-06 22:25:52,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-11-06 22:25:52,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-11-06 22:25:52,237 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-11-06 22:25:52,237 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-11-06 22:25:52,237 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-11-06 22:25:52,237 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-11-06 22:25:52,238 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-11-06 22:25:52,244 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-11-06 22:25:52,244 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-11-06 22:25:52,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-11-06 22:25:52,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-11-06 22:25:52,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-11-06 22:25:52,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-11-06 22:25:52,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-11-06 22:25:52,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-11-06 22:25:52,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:25:52,247 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-06 22:25:52,248 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:25:52,248 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-06 22:25:52,301 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:25:52,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 169 transitions, 356 flow [2023-11-06 22:25:52,376 INFO L124 PetriNetUnfolderBase]: 10/206 cut-off events. [2023-11-06 22:25:52,377 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 22:25:52,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 206 events. 10/206 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 558 event pairs, 0 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 154. Up to 8 conditions per place. [2023-11-06 22:25:52,381 INFO L82 GeneralOperation]: Start removeDead. Operand has 169 places, 169 transitions, 356 flow [2023-11-06 22:25:52,384 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 169 transitions, 356 flow [2023-11-06 22:25:52,384 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:25:52,384 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 169 places, 169 transitions, 356 flow [2023-11-06 22:25:52,385 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 169 places, 169 transitions, 356 flow [2023-11-06 22:25:52,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 169 transitions, 356 flow [2023-11-06 22:25:52,421 INFO L124 PetriNetUnfolderBase]: 10/206 cut-off events. [2023-11-06 22:25:52,421 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 22:25:52,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 206 events. 10/206 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 558 event pairs, 0 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 154. Up to 8 conditions per place. [2023-11-06 22:25:52,437 INFO L119 LiptonReduction]: Number of co-enabled transitions 17484 [2023-11-06 22:25:55,955 INFO L134 LiptonReduction]: Checked pairs total: 33901 [2023-11-06 22:25:55,955 INFO L136 LiptonReduction]: Total number of compositions: 154 [2023-11-06 22:25:55,958 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:25:55,960 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;@6f7d0751, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:25:55,960 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-11-06 22:25:55,963 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:25:55,964 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-11-06 22:25:55,964 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:25:55,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:55,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:25:55,969 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-11-06 22:25:55,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:55,969 INFO L85 PathProgramCache]: Analyzing trace with hash 32955925, now seen corresponding path program 1 times [2023-11-06 22:25:55,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:55,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691420669] [2023-11-06 22:25:55,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:55,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:56,022 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 22:25:56,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:56,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691420669] [2023-11-06 22:25:56,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691420669] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:56,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:25:56,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:25:56,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285215156] [2023-11-06 22:25:56,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:56,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:25:56,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:56,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:25:56,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:25:56,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 323 [2023-11-06 22:25:56,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 126 flow. Second operand has 2 states, 2 states have (on average 133.0) internal successors, (266), 2 states have internal predecessors, (266), 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 22:25:56,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:56,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 323 [2023-11-06 22:25:56,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:56,392 INFO L124 PetriNetUnfolderBase]: 1237/2011 cut-off events. [2023-11-06 22:25:56,392 INFO L125 PetriNetUnfolderBase]: For 292/292 co-relation queries the response was YES. [2023-11-06 22:25:56,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3935 conditions, 2011 events. 1237/2011 cut-off events. For 292/292 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 10787 event pairs, 995 based on Foata normal form. 0/1641 useless extension candidates. Maximal degree in co-relation 485. Up to 1756 conditions per place. [2023-11-06 22:25:56,453 INFO L140 encePairwiseOnDemand]: 304/323 looper letters, 23 selfloop transitions, 0 changer transitions 0/35 dead transitions. [2023-11-06 22:25:56,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 35 transitions, 134 flow [2023-11-06 22:25:56,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:25:56,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:25:56,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 304 transitions. [2023-11-06 22:25:56,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47058823529411764 [2023-11-06 22:25:56,456 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 304 transitions. [2023-11-06 22:25:56,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 304 transitions. [2023-11-06 22:25:56,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:56,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 304 transitions. [2023-11-06 22:25:56,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 152.0) internal successors, (304), 2 states have internal predecessors, (304), 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 22:25:56,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 323.0) internal successors, (969), 3 states have internal predecessors, (969), 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 22:25:56,463 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 323.0) internal successors, (969), 3 states have internal predecessors, (969), 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 22:25:56,464 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 126 flow. Second operand 2 states and 304 transitions. [2023-11-06 22:25:56,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 35 transitions, 134 flow [2023-11-06 22:25:56,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 35 transitions, 132 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-06 22:25:56,469 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 86 flow [2023-11-06 22:25:56,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=86, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2023-11-06 22:25:56,473 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -18 predicate places. [2023-11-06 22:25:56,474 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 86 flow [2023-11-06 22:25:56,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 133.0) internal successors, (266), 2 states have internal predecessors, (266), 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 22:25:56,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:56,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:56,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:25:56,475 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-11-06 22:25:56,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:56,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1756761628, now seen corresponding path program 1 times [2023-11-06 22:25:56,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:56,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560513141] [2023-11-06 22:25:56,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:56,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:56,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:56,552 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 22:25:56,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:56,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560513141] [2023-11-06 22:25:56,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560513141] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:56,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:25:56,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:25:56,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544403257] [2023-11-06 22:25:56,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:56,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:25:56,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:56,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:25:56,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:25:56,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 323 [2023-11-06 22:25:56,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 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 22:25:56,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:56,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 323 [2023-11-06 22:25:56,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:57,613 INFO L124 PetriNetUnfolderBase]: 4617/6744 cut-off events. [2023-11-06 22:25:57,613 INFO L125 PetriNetUnfolderBase]: For 345/345 co-relation queries the response was YES. [2023-11-06 22:25:57,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13715 conditions, 6744 events. 4617/6744 cut-off events. For 345/345 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 39270 event pairs, 1682 based on Foata normal form. 0/5884 useless extension candidates. Maximal degree in co-relation 13709. Up to 4247 conditions per place. [2023-11-06 22:25:57,674 INFO L140 encePairwiseOnDemand]: 308/323 looper letters, 47 selfloop transitions, 12 changer transitions 0/62 dead transitions. [2023-11-06 22:25:57,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 62 transitions, 268 flow [2023-11-06 22:25:57,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:25:57,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:25:57,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 428 transitions. [2023-11-06 22:25:57,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44169246646026833 [2023-11-06 22:25:57,679 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 428 transitions. [2023-11-06 22:25:57,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 428 transitions. [2023-11-06 22:25:57,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:57,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 428 transitions. [2023-11-06 22:25:57,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 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 22:25:57,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 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 22:25:57,686 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 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 22:25:57,686 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 86 flow. Second operand 3 states and 428 transitions. [2023-11-06 22:25:57,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 62 transitions, 268 flow [2023-11-06 22:25:57,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 62 transitions, 268 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:25:57,692 INFO L231 Difference]: Finished difference. Result has 44 places, 47 transitions, 188 flow [2023-11-06 22:25:57,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=44, PETRI_TRANSITIONS=47} [2023-11-06 22:25:57,695 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -14 predicate places. [2023-11-06 22:25:57,696 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 47 transitions, 188 flow [2023-11-06 22:25:57,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 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 22:25:57,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:57,697 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-11-06 22:25:57,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:25:57,697 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-11-06 22:25:57,698 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:57,698 INFO L85 PathProgramCache]: Analyzing trace with hash 235916843, now seen corresponding path program 1 times [2023-11-06 22:25:57,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:57,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467276175] [2023-11-06 22:25:57,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:57,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:57,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:25:57,741 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:25:57,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:25:57,776 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:25:57,782 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:25:57,782 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2023-11-06 22:25:57,783 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 29 remaining) [2023-11-06 22:25:57,783 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 29 remaining) [2023-11-06 22:25:57,783 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 29 remaining) [2023-11-06 22:25:57,783 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 29 remaining) [2023-11-06 22:25:57,784 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (23 of 29 remaining) [2023-11-06 22:25:57,787 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (22 of 29 remaining) [2023-11-06 22:25:57,787 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (21 of 29 remaining) [2023-11-06 22:25:57,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 29 remaining) [2023-11-06 22:25:57,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 29 remaining) [2023-11-06 22:25:57,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 29 remaining) [2023-11-06 22:25:57,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 29 remaining) [2023-11-06 22:25:57,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 29 remaining) [2023-11-06 22:25:57,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (15 of 29 remaining) [2023-11-06 22:25:57,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (14 of 29 remaining) [2023-11-06 22:25:57,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 29 remaining) [2023-11-06 22:25:57,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 29 remaining) [2023-11-06 22:25:57,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 29 remaining) [2023-11-06 22:25:57,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 29 remaining) [2023-11-06 22:25:57,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 29 remaining) [2023-11-06 22:25:57,792 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 29 remaining) [2023-11-06 22:25:57,792 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 29 remaining) [2023-11-06 22:25:57,792 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 29 remaining) [2023-11-06 22:25:57,792 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 29 remaining) [2023-11-06 22:25:57,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 29 remaining) [2023-11-06 22:25:57,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 29 remaining) [2023-11-06 22:25:57,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 29 remaining) [2023-11-06 22:25:57,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 29 remaining) [2023-11-06 22:25:57,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 29 remaining) [2023-11-06 22:25:57,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:25:57,794 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-06 22:25:57,796 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:25:57,797 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-06 22:25:57,856 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:25:57,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 217 transitions, 462 flow [2023-11-06 22:25:57,914 INFO L124 PetriNetUnfolderBase]: 13/267 cut-off events. [2023-11-06 22:25:57,915 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-06 22:25:57,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 267 events. 13/267 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 845 event pairs, 0 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 214. Up to 10 conditions per place. [2023-11-06 22:25:57,920 INFO L82 GeneralOperation]: Start removeDead. Operand has 217 places, 217 transitions, 462 flow [2023-11-06 22:25:57,926 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 217 places, 217 transitions, 462 flow [2023-11-06 22:25:57,926 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:25:57,927 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 217 places, 217 transitions, 462 flow [2023-11-06 22:25:57,927 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 217 places, 217 transitions, 462 flow [2023-11-06 22:25:57,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 217 transitions, 462 flow [2023-11-06 22:25:57,986 INFO L124 PetriNetUnfolderBase]: 13/267 cut-off events. [2023-11-06 22:25:57,986 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-06 22:25:57,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 267 events. 13/267 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 845 event pairs, 0 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 214. Up to 10 conditions per place. [2023-11-06 22:25:58,017 INFO L119 LiptonReduction]: Number of co-enabled transitions 32336 [2023-11-06 22:26:02,638 INFO L134 LiptonReduction]: Checked pairs total: 60966 [2023-11-06 22:26:02,639 INFO L136 LiptonReduction]: Total number of compositions: 211 [2023-11-06 22:26:02,641 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:26:02,645 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;@6f7d0751, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:26:02,648 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2023-11-06 22:26:02,650 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:26:02,650 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-06 22:26:02,650 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:26:02,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:26:02,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:26:02,651 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-11-06 22:26:02,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:02,652 INFO L85 PathProgramCache]: Analyzing trace with hash 47837931, now seen corresponding path program 1 times [2023-11-06 22:26:02,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:02,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605924125] [2023-11-06 22:26:02,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:02,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:02,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:02,677 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 22:26:02,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:02,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605924125] [2023-11-06 22:26:02,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605924125] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:02,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:02,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:26:02,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071613233] [2023-11-06 22:26:02,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:02,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:26:02,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:02,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:26:02,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:26:02,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 428 [2023-11-06 22:26:02,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 70 transitions, 168 flow. Second operand has 2 states, 2 states have (on average 169.0) internal successors, (338), 2 states have internal predecessors, (338), 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 22:26:02,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:26:02,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 428 [2023-11-06 22:26:02,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:26:05,132 INFO L124 PetriNetUnfolderBase]: 10525/15163 cut-off events. [2023-11-06 22:26:05,132 INFO L125 PetriNetUnfolderBase]: For 3148/3148 co-relation queries the response was YES. [2023-11-06 22:26:05,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30048 conditions, 15163 events. 10525/15163 cut-off events. For 3148/3148 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 92377 event pairs, 8555 based on Foata normal form. 0/12422 useless extension candidates. Maximal degree in co-relation 3973. Up to 13636 conditions per place. [2023-11-06 22:26:05,287 INFO L140 encePairwiseOnDemand]: 403/428 looper letters, 30 selfloop transitions, 0 changer transitions 0/45 dead transitions. [2023-11-06 22:26:05,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 45 transitions, 178 flow [2023-11-06 22:26:05,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:26:05,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:26:05,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 389 transitions. [2023-11-06 22:26:05,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4544392523364486 [2023-11-06 22:26:05,292 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 389 transitions. [2023-11-06 22:26:05,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 389 transitions. [2023-11-06 22:26:05,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:26:05,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 389 transitions. [2023-11-06 22:26:05,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 194.5) internal successors, (389), 2 states have internal predecessors, (389), 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 22:26:05,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 428.0) internal successors, (1284), 3 states have internal predecessors, (1284), 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 22:26:05,298 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 428.0) internal successors, (1284), 3 states have internal predecessors, (1284), 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 22:26:05,299 INFO L175 Difference]: Start difference. First operand has 75 places, 70 transitions, 168 flow. Second operand 2 states and 389 transitions. [2023-11-06 22:26:05,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 45 transitions, 178 flow [2023-11-06 22:26:05,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 172 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-11-06 22:26:05,308 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 112 flow [2023-11-06 22:26:05,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=428, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=112, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2023-11-06 22:26:05,311 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -24 predicate places. [2023-11-06 22:26:05,311 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 112 flow [2023-11-06 22:26:05,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 169.0) internal successors, (338), 2 states have internal predecessors, (338), 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 22:26:05,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:26:05,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:05,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:26:05,312 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-11-06 22:26:05,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:05,313 INFO L85 PathProgramCache]: Analyzing trace with hash -788137296, now seen corresponding path program 1 times [2023-11-06 22:26:05,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:05,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777322441] [2023-11-06 22:26:05,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:05,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:05,359 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 22:26:05,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:05,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777322441] [2023-11-06 22:26:05,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777322441] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:05,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:05,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:26:05,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251443650] [2023-11-06 22:26:05,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:05,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:26:05,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:05,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:26:05,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:26:05,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 428 [2023-11-06 22:26:05,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 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 22:26:05,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:26:05,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 428 [2023-11-06 22:26:05,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:26:14,746 INFO L124 PetriNetUnfolderBase]: 65293/86850 cut-off events. [2023-11-06 22:26:14,747 INFO L125 PetriNetUnfolderBase]: For 4434/4434 co-relation queries the response was YES. [2023-11-06 22:26:14,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176046 conditions, 86850 events. 65293/86850 cut-off events. For 4434/4434 co-relation queries the response was YES. Maximal size of possible extension queue 3576. Compared 559717 event pairs, 24624 based on Foata normal form. 0/74817 useless extension candidates. Maximal degree in co-relation 176039. Up to 53039 conditions per place. [2023-11-06 22:26:15,381 INFO L140 encePairwiseOnDemand]: 408/428 looper letters, 62 selfloop transitions, 16 changer transitions 0/81 dead transitions. [2023-11-06 22:26:15,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 81 transitions, 355 flow [2023-11-06 22:26:15,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:26:15,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:26:15,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 547 transitions. [2023-11-06 22:26:15,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42601246105919005 [2023-11-06 22:26:15,385 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 547 transitions. [2023-11-06 22:26:15,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 547 transitions. [2023-11-06 22:26:15,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:26:15,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 547 transitions. [2023-11-06 22:26:15,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.33333333333334) internal successors, (547), 3 states have internal predecessors, (547), 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 22:26:15,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 428.0) internal successors, (1712), 4 states have internal predecessors, (1712), 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 22:26:15,392 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 428.0) internal successors, (1712), 4 states have internal predecessors, (1712), 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 22:26:15,393 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 112 flow. Second operand 3 states and 547 transitions. [2023-11-06 22:26:15,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 81 transitions, 355 flow [2023-11-06 22:26:15,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 81 transitions, 355 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:26:15,414 INFO L231 Difference]: Finished difference. Result has 55 places, 61 transitions, 248 flow [2023-11-06 22:26:15,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=428, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=55, PETRI_TRANSITIONS=61} [2023-11-06 22:26:15,416 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -20 predicate places. [2023-11-06 22:26:15,416 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 61 transitions, 248 flow [2023-11-06 22:26:15,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 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 22:26:15,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:26:15,417 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:15,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:26:15,418 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-11-06 22:26:15,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:15,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1982993882, now seen corresponding path program 1 times [2023-11-06 22:26:15,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:15,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991601465] [2023-11-06 22:26:15,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:15,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:15,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:15,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:26:15,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:15,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991601465] [2023-11-06 22:26:15,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991601465] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:15,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:15,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:26:15,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498731811] [2023-11-06 22:26:15,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:15,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:26:15,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:15,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:26:15,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:26:15,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 428 [2023-11-06 22:26:15,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 61 transitions, 248 flow. Second operand has 4 states, 4 states have (on average 167.5) internal successors, (670), 4 states have internal predecessors, (670), 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 22:26:15,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:26:15,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 428 [2023-11-06 22:26:15,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:26:16,315 INFO L124 PetriNetUnfolderBase]: 3308/5508 cut-off events. [2023-11-06 22:26:16,315 INFO L125 PetriNetUnfolderBase]: For 3226/3226 co-relation queries the response was YES. [2023-11-06 22:26:16,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14840 conditions, 5508 events. 3308/5508 cut-off events. For 3226/3226 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 35071 event pairs, 123 based on Foata normal form. 1156/6643 useless extension candidates. Maximal degree in co-relation 14831. Up to 2692 conditions per place. [2023-11-06 22:26:16,355 INFO L140 encePairwiseOnDemand]: 415/428 looper letters, 65 selfloop transitions, 17 changer transitions 0/97 dead transitions. [2023-11-06 22:26:16,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 97 transitions, 569 flow [2023-11-06 22:26:16,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:26:16,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:26:16,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 903 transitions. [2023-11-06 22:26:16,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4219626168224299 [2023-11-06 22:26:16,361 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 903 transitions. [2023-11-06 22:26:16,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 903 transitions. [2023-11-06 22:26:16,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:26:16,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 903 transitions. [2023-11-06 22:26:16,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 180.6) internal successors, (903), 5 states have internal predecessors, (903), 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 22:26:16,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 428.0) internal successors, (2568), 6 states have internal predecessors, (2568), 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 22:26:16,372 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 428.0) internal successors, (2568), 6 states have internal predecessors, (2568), 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 22:26:16,373 INFO L175 Difference]: Start difference. First operand has 55 places, 61 transitions, 248 flow. Second operand 5 states and 903 transitions. [2023-11-06 22:26:16,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 97 transitions, 569 flow [2023-11-06 22:26:16,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 97 transitions, 521 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:26:16,387 INFO L231 Difference]: Finished difference. Result has 54 places, 57 transitions, 242 flow [2023-11-06 22:26:16,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=428, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=242, PETRI_PLACES=54, PETRI_TRANSITIONS=57} [2023-11-06 22:26:16,388 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -21 predicate places. [2023-11-06 22:26:16,388 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 57 transitions, 242 flow [2023-11-06 22:26:16,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 167.5) internal successors, (670), 4 states have internal predecessors, (670), 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 22:26:16,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:26:16,389 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:16,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:26:16,390 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-11-06 22:26:16,390 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:16,390 INFO L85 PathProgramCache]: Analyzing trace with hash 830353140, now seen corresponding path program 1 times [2023-11-06 22:26:16,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:16,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691276773] [2023-11-06 22:26:16,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:16,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:16,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:26:16,414 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:26:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:26:16,442 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:26:16,443 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:26:16,443 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 36 remaining) [2023-11-06 22:26:16,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (34 of 36 remaining) [2023-11-06 22:26:16,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (33 of 36 remaining) [2023-11-06 22:26:16,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (32 of 36 remaining) [2023-11-06 22:26:16,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (31 of 36 remaining) [2023-11-06 22:26:16,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (30 of 36 remaining) [2023-11-06 22:26:16,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (29 of 36 remaining) [2023-11-06 22:26:16,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (28 of 36 remaining) [2023-11-06 22:26:16,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 36 remaining) [2023-11-06 22:26:16,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 36 remaining) [2023-11-06 22:26:16,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 36 remaining) [2023-11-06 22:26:16,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 36 remaining) [2023-11-06 22:26:16,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (23 of 36 remaining) [2023-11-06 22:26:16,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (22 of 36 remaining) [2023-11-06 22:26:16,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (21 of 36 remaining) [2023-11-06 22:26:16,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 36 remaining) [2023-11-06 22:26:16,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 36 remaining) [2023-11-06 22:26:16,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 36 remaining) [2023-11-06 22:26:16,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 36 remaining) [2023-11-06 22:26:16,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 36 remaining) [2023-11-06 22:26:16,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (15 of 36 remaining) [2023-11-06 22:26:16,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (14 of 36 remaining) [2023-11-06 22:26:16,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 36 remaining) [2023-11-06 22:26:16,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 36 remaining) [2023-11-06 22:26:16,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 36 remaining) [2023-11-06 22:26:16,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 36 remaining) [2023-11-06 22:26:16,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 36 remaining) [2023-11-06 22:26:16,451 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 36 remaining) [2023-11-06 22:26:16,451 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 36 remaining) [2023-11-06 22:26:16,451 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 36 remaining) [2023-11-06 22:26:16,452 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 36 remaining) [2023-11-06 22:26:16,452 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 36 remaining) [2023-11-06 22:26:16,452 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 36 remaining) [2023-11-06 22:26:16,452 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 36 remaining) [2023-11-06 22:26:16,452 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 36 remaining) [2023-11-06 22:26:16,453 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 36 remaining) [2023-11-06 22:26:16,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:26:16,453 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-06 22:26:16,454 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:26:16,454 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-11-06 22:26:16,509 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:26:16,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 265 transitions, 570 flow [2023-11-06 22:26:16,597 INFO L124 PetriNetUnfolderBase]: 16/328 cut-off events. [2023-11-06 22:26:16,597 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-06 22:26:16,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 328 events. 16/328 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1141 event pairs, 0 based on Foata normal form. 0/271 useless extension candidates. Maximal degree in co-relation 280. Up to 12 conditions per place. [2023-11-06 22:26:16,604 INFO L82 GeneralOperation]: Start removeDead. Operand has 265 places, 265 transitions, 570 flow [2023-11-06 22:26:16,609 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 265 places, 265 transitions, 570 flow [2023-11-06 22:26:16,609 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:26:16,609 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 265 places, 265 transitions, 570 flow [2023-11-06 22:26:16,610 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 265 places, 265 transitions, 570 flow [2023-11-06 22:26:16,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 265 transitions, 570 flow [2023-11-06 22:26:16,691 INFO L124 PetriNetUnfolderBase]: 16/328 cut-off events. [2023-11-06 22:26:16,691 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-06 22:26:16,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 328 events. 16/328 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1141 event pairs, 0 based on Foata normal form. 0/271 useless extension candidates. Maximal degree in co-relation 280. Up to 12 conditions per place. [2023-11-06 22:26:16,721 INFO L119 LiptonReduction]: Number of co-enabled transitions 51700 [2023-11-06 22:26:22,268 INFO L134 LiptonReduction]: Checked pairs total: 96266 [2023-11-06 22:26:22,268 INFO L136 LiptonReduction]: Total number of compositions: 251 [2023-11-06 22:26:22,271 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:26:22,271 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;@6f7d0751, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:26:22,272 INFO L358 AbstractCegarLoop]: Starting to check reachability of 43 error locations. [2023-11-06 22:26:22,273 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:26:22,273 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-06 22:26:22,273 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:26:22,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:26:22,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:26:22,274 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-11-06 22:26:22,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:22,275 INFO L85 PathProgramCache]: Analyzing trace with hash 64646272, now seen corresponding path program 1 times [2023-11-06 22:26:22,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:22,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281995590] [2023-11-06 22:26:22,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:22,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:22,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:22,292 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 22:26:22,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:22,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281995590] [2023-11-06 22:26:22,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281995590] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:22,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:22,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:26:22,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905589938] [2023-11-06 22:26:22,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:22,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:26:22,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:22,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:26:22,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:26:22,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 516 [2023-11-06 22:26:22,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 86 transitions, 212 flow. Second operand has 2 states, 2 states have (on average 205.0) internal successors, (410), 2 states have internal predecessors, (410), 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 22:26:22,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:26:22,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 516 [2023-11-06 22:26:22,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand