./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/46_monabsex2_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_f8cb8437-df83-478c-aa1d-ebdc74492102/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cb8437-df83-478c-aa1d-ebdc74492102/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_f8cb8437-df83-478c-aa1d-ebdc74492102/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cb8437-df83-478c-aa1d-ebdc74492102/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/46_monabsex2_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cb8437-df83-478c-aa1d-ebdc74492102/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_f8cb8437-df83-478c-aa1d-ebdc74492102/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 134e9604c8f91a200c8250c9fbb45867ed525dc78e65c16e0a5fa44f5d71ac67 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:07:26,412 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:07:26,517 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cb8437-df83-478c-aa1d-ebdc74492102/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-06 23:07:26,526 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:07:26,526 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:07:26,566 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:07:26,566 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:07:26,567 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:07:26,568 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:07:26,568 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:07:26,569 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:07:26,570 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:07:26,570 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:07:26,571 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:07:26,572 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:07:26,572 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:07:26,573 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:07:26,574 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:07:26,574 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:07:26,575 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:07:26,575 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:07:26,576 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:07:26,577 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-06 23:07:26,577 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 23:07:26,578 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:07:26,579 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:07:26,579 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:07:26,580 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:07:26,581 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:07:26,581 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:07:26,582 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:07:26,582 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:07:26,583 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:07:26,584 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:07:26,584 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:07:26,585 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:07:26,585 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:07:26,586 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:07:26,587 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:07:26,587 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:07:26,588 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:07:26,589 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_f8cb8437-df83-478c-aa1d-ebdc74492102/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cb8437-df83-478c-aa1d-ebdc74492102/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 134e9604c8f91a200c8250c9fbb45867ed525dc78e65c16e0a5fa44f5d71ac67 [2023-11-06 23:07:26,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:07:26,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:07:26,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:07:26,878 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:07:26,878 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:07:26,880 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cb8437-df83-478c-aa1d-ebdc74492102/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-ext/46_monabsex2_vs.i [2023-11-06 23:07:29,959 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:07:30,241 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:07:30,242 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cb8437-df83-478c-aa1d-ebdc74492102/sv-benchmarks/c/pthread-ext/46_monabsex2_vs.i [2023-11-06 23:07:30,259 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cb8437-df83-478c-aa1d-ebdc74492102/bin/uautomizer-verify-WvqO1wxjHP/data/43756758f/4809c5ce4efa495789ee32ff940bec35/FLAG183093bcc [2023-11-06 23:07:30,273 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cb8437-df83-478c-aa1d-ebdc74492102/bin/uautomizer-verify-WvqO1wxjHP/data/43756758f/4809c5ce4efa495789ee32ff940bec35 [2023-11-06 23:07:30,276 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:07:30,278 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:07:30,279 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:07:30,280 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:07:30,285 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:07:30,286 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:07:30" (1/1) ... [2023-11-06 23:07:30,287 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75a18cab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:30, skipping insertion in model container [2023-11-06 23:07:30,288 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:07:30" (1/1) ... [2023-11-06 23:07:30,331 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:07:30,508 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-06 23:07:30,725 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:07:30,738 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:07:30,767 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-06 23:07:30,805 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:07:30,851 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:07:30,851 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:07:30,851 WARN L672 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:07:30,859 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:07:30,860 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:30 WrapperNode [2023-11-06 23:07:30,861 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:07:30,862 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:07:30,862 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:07:30,862 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:07:30,871 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:30" (1/1) ... [2023-11-06 23:07:30,907 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:30" (1/1) ... [2023-11-06 23:07:30,931 INFO L138 Inliner]: procedures = 170, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 60 [2023-11-06 23:07:30,932 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:07:30,932 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:07:30,932 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:07:30,933 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:07:30,942 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:30" (1/1) ... [2023-11-06 23:07:30,942 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:30" (1/1) ... [2023-11-06 23:07:30,945 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:30" (1/1) ... [2023-11-06 23:07:30,945 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:30" (1/1) ... [2023-11-06 23:07:30,951 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:30" (1/1) ... [2023-11-06 23:07:30,954 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:30" (1/1) ... [2023-11-06 23:07:30,957 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:30" (1/1) ... [2023-11-06 23:07:30,958 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:30" (1/1) ... [2023-11-06 23:07:30,961 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:07:30,962 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:07:30,962 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:07:30,963 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:07:30,964 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:30" (1/1) ... [2023-11-06 23:07:30,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:07:30,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cb8437-df83-478c-aa1d-ebdc74492102/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:30,997 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cb8437-df83-478c-aa1d-ebdc74492102/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:07:31,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cb8437-df83-478c-aa1d-ebdc74492102/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:07:31,046 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-06 23:07:31,046 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-06 23:07:31,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 23:07:31,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 23:07:31,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:07:31,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:07:31,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:07:31,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:07:31,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 23:07:31,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:07:31,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:07:31,053 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 23:07:31,202 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:07:31,205 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:07:31,360 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:07:31,473 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:07:31,476 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 23:07:31,478 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:07:31 BoogieIcfgContainer [2023-11-06 23:07:31,479 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:07:31,482 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:07:31,484 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:07:31,488 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:07:31,488 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:07:30" (1/3) ... [2023-11-06 23:07:31,489 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f09785d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:07:31, skipping insertion in model container [2023-11-06 23:07:31,489 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:30" (2/3) ... [2023-11-06 23:07:31,492 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f09785d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:07:31, skipping insertion in model container [2023-11-06 23:07:31,492 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:07:31" (3/3) ... [2023-11-06 23:07:31,494 INFO L112 eAbstractionObserver]: Analyzing ICFG 46_monabsex2_vs.i [2023-11-06 23:07:31,503 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 23:07:31,517 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:07:31,517 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-11-06 23:07:31,517 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 23:07:31,559 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 23:07:31,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 37 transitions, 78 flow [2023-11-06 23:07:31,675 INFO L124 PetriNetUnfolderBase]: 2/48 cut-off events. [2023-11-06 23:07:31,676 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:07:31,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 48 events. 2/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 62 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 24. Up to 4 conditions per place. [2023-11-06 23:07:31,681 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 37 transitions, 78 flow [2023-11-06 23:07:31,690 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 37 transitions, 78 flow [2023-11-06 23:07:31,695 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:07:31,710 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 37 transitions, 78 flow [2023-11-06 23:07:31,712 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 37 transitions, 78 flow [2023-11-06 23:07:31,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 37 transitions, 78 flow [2023-11-06 23:07:31,728 INFO L124 PetriNetUnfolderBase]: 2/48 cut-off events. [2023-11-06 23:07:31,728 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:07:31,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 48 events. 2/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 62 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 24. Up to 4 conditions per place. [2023-11-06 23:07:31,730 INFO L119 LiptonReduction]: Number of co-enabled transitions 308 [2023-11-06 23:07:33,408 INFO L134 LiptonReduction]: Checked pairs total: 303 [2023-11-06 23:07:33,408 INFO L136 LiptonReduction]: Total number of compositions: 33 [2023-11-06 23:07:33,427 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:07:33,436 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;@7fc98179, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:07:33,436 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-06 23:07:33,442 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:07:33,442 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-11-06 23:07:33,442 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:07:33,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:33,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 23:07:33,444 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-06 23:07:33,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:33,451 INFO L85 PathProgramCache]: Analyzing trace with hash 7194721, now seen corresponding path program 1 times [2023-11-06 23:07:33,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:33,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030499567] [2023-11-06 23:07:33,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:33,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:33,701 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 23:07:33,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:33,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030499567] [2023-11-06 23:07:33,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030499567] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:33,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:33,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:07:33,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664377901] [2023-11-06 23:07:33,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:33,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 23:07:33,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:33,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 23:07:33,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 23:07:33,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 70 [2023-11-06 23:07:33,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 12 transitions, 28 flow. Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 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 23:07:33,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:33,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 70 [2023-11-06 23:07:33,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:33,806 INFO L124 PetriNetUnfolderBase]: 2/11 cut-off events. [2023-11-06 23:07:33,806 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:07:33,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 11 events. 2/11 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 9 event pairs, 2 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 14. Up to 11 conditions per place. [2023-11-06 23:07:33,808 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 5 selfloop transitions, 0 changer transitions 0/6 dead transitions. [2023-11-06 23:07:33,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 10 places, 6 transitions, 26 flow [2023-11-06 23:07:33,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 23:07:33,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 23:07:33,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 63 transitions. [2023-11-06 23:07:33,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2023-11-06 23:07:33,826 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 63 transitions. [2023-11-06 23:07:33,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 63 transitions. [2023-11-06 23:07:33,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:33,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 63 transitions. [2023-11-06 23:07:33,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 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 23:07:33,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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 23:07:33,842 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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 23:07:33,844 INFO L175 Difference]: Start difference. First operand has 15 places, 12 transitions, 28 flow. Second operand 2 states and 63 transitions. [2023-11-06 23:07:33,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 10 places, 6 transitions, 26 flow [2023-11-06 23:07:33,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 6 transitions, 26 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 23:07:33,850 INFO L231 Difference]: Finished difference. Result has 10 places, 6 transitions, 16 flow [2023-11-06 23:07:33,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=16, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=16, PETRI_PLACES=10, PETRI_TRANSITIONS=6} [2023-11-06 23:07:33,856 INFO L281 CegarLoopForPetriNet]: 15 programPoint places, -5 predicate places. [2023-11-06 23:07:33,857 INFO L495 AbstractCegarLoop]: Abstraction has has 10 places, 6 transitions, 16 flow [2023-11-06 23:07:33,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 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 23:07:33,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:33,857 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-06 23:07:33,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:07:33,858 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-06 23:07:33,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:33,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1675793777, now seen corresponding path program 1 times [2023-11-06 23:07:33,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:33,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045611457] [2023-11-06 23:07:33,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:33,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:33,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:07:33,892 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:07:33,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:07:33,930 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:07:33,930 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 23:07:33,932 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2023-11-06 23:07:33,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2023-11-06 23:07:33,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2023-11-06 23:07:33,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2023-11-06 23:07:33,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2023-11-06 23:07:33,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2023-11-06 23:07:33,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2023-11-06 23:07:33,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2023-11-06 23:07:33,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2023-11-06 23:07:33,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2023-11-06 23:07:33,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2023-11-06 23:07:33,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 23:07:33,939 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-06 23:07:33,944 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 23:07:33,944 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-06 23:07:33,977 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 23:07:33,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 49 transitions, 108 flow [2023-11-06 23:07:33,999 INFO L124 PetriNetUnfolderBase]: 3/73 cut-off events. [2023-11-06 23:07:33,999 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 23:07:34,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 73 events. 3/73 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 126 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 49. Up to 6 conditions per place. [2023-11-06 23:07:34,001 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 49 transitions, 108 flow [2023-11-06 23:07:34,003 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 49 transitions, 108 flow [2023-11-06 23:07:34,003 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:07:34,003 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 49 transitions, 108 flow [2023-11-06 23:07:34,004 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 49 transitions, 108 flow [2023-11-06 23:07:34,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 49 transitions, 108 flow [2023-11-06 23:07:34,037 INFO L124 PetriNetUnfolderBase]: 3/73 cut-off events. [2023-11-06 23:07:34,039 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 23:07:34,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 73 events. 3/73 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 126 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 49. Up to 6 conditions per place. [2023-11-06 23:07:34,041 INFO L119 LiptonReduction]: Number of co-enabled transitions 880 [2023-11-06 23:07:35,473 INFO L134 LiptonReduction]: Checked pairs total: 2364 [2023-11-06 23:07:35,473 INFO L136 LiptonReduction]: Total number of compositions: 30 [2023-11-06 23:07:35,475 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:07:35,476 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;@7fc98179, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:07:35,477 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-06 23:07:35,478 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:07:35,479 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-06 23:07:35,479 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:07:35,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:35,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 23:07:35,479 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-11-06 23:07:35,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:35,496 INFO L85 PathProgramCache]: Analyzing trace with hash 9970186, now seen corresponding path program 1 times [2023-11-06 23:07:35,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:35,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513927305] [2023-11-06 23:07:35,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:35,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:35,555 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 23:07:35,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:35,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513927305] [2023-11-06 23:07:35,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513927305] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:35,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:35,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:07:35,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611698639] [2023-11-06 23:07:35,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:35,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 23:07:35,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:35,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 23:07:35,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 23:07:35,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 79 [2023-11-06 23:07:35,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 58 flow. Second operand has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 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 23:07:35,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:35,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 79 [2023-11-06 23:07:35,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:35,597 INFO L124 PetriNetUnfolderBase]: 39/95 cut-off events. [2023-11-06 23:07:35,597 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-06 23:07:35,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 95 events. 39/95 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 324 event pairs, 39 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 38. Up to 82 conditions per place. [2023-11-06 23:07:35,599 INFO L140 encePairwiseOnDemand]: 68/79 looper letters, 10 selfloop transitions, 0 changer transitions 0/13 dead transitions. [2023-11-06 23:07:35,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 13 transitions, 56 flow [2023-11-06 23:07:35,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 23:07:35,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 23:07:35,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 79 transitions. [2023-11-06 23:07:35,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-11-06 23:07:35,601 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 79 transitions. [2023-11-06 23:07:35,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 79 transitions. [2023-11-06 23:07:35,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:35,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 79 transitions. [2023-11-06 23:07:35,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 39.5) internal successors, (79), 2 states have internal predecessors, (79), 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 23:07:35,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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 23:07:35,604 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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 23:07:35,604 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 58 flow. Second operand 2 states and 79 transitions. [2023-11-06 23:07:35,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 13 transitions, 56 flow [2023-11-06 23:07:35,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 13 transitions, 56 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 23:07:35,605 INFO L231 Difference]: Finished difference. Result has 19 places, 13 transitions, 36 flow [2023-11-06 23:07:35,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=36, PETRI_PLACES=19, PETRI_TRANSITIONS=13} [2023-11-06 23:07:35,607 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -10 predicate places. [2023-11-06 23:07:35,607 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 13 transitions, 36 flow [2023-11-06 23:07:35,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 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 23:07:35,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:35,607 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-06 23:07:35,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 23:07:35,608 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-11-06 23:07:35,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:35,608 INFO L85 PathProgramCache]: Analyzing trace with hash -493536452, now seen corresponding path program 1 times [2023-11-06 23:07:35,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:35,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225050596] [2023-11-06 23:07:35,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:35,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:07:35,628 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:07:35,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:07:35,646 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:07:35,646 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 23:07:35,647 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2023-11-06 23:07:35,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2023-11-06 23:07:35,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2023-11-06 23:07:35,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 16 remaining) [2023-11-06 23:07:35,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2023-11-06 23:07:35,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 16 remaining) [2023-11-06 23:07:35,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 16 remaining) [2023-11-06 23:07:35,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2023-11-06 23:07:35,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2023-11-06 23:07:35,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2023-11-06 23:07:35,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2023-11-06 23:07:35,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2023-11-06 23:07:35,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2023-11-06 23:07:35,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2023-11-06 23:07:35,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2023-11-06 23:07:35,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2023-11-06 23:07:35,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 23:07:35,651 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-06 23:07:35,652 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 23:07:35,652 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-06 23:07:35,672 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 23:07:35,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 61 transitions, 140 flow [2023-11-06 23:07:35,688 INFO L124 PetriNetUnfolderBase]: 4/98 cut-off events. [2023-11-06 23:07:35,688 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 23:07:35,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 98 events. 4/98 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 178 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 77. Up to 8 conditions per place. [2023-11-06 23:07:35,689 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 61 transitions, 140 flow [2023-11-06 23:07:35,690 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 61 transitions, 140 flow [2023-11-06 23:07:35,690 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:07:35,690 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 61 transitions, 140 flow [2023-11-06 23:07:35,691 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 61 transitions, 140 flow [2023-11-06 23:07:35,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 61 transitions, 140 flow [2023-11-06 23:07:35,704 INFO L124 PetriNetUnfolderBase]: 4/98 cut-off events. [2023-11-06 23:07:35,704 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 23:07:35,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 98 events. 4/98 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 178 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 77. Up to 8 conditions per place. [2023-11-06 23:07:35,707 INFO L119 LiptonReduction]: Number of co-enabled transitions 1716 [2023-11-06 23:07:37,467 INFO L134 LiptonReduction]: Checked pairs total: 5197 [2023-11-06 23:07:37,467 INFO L136 LiptonReduction]: Total number of compositions: 35 [2023-11-06 23:07:37,469 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:07:37,471 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;@7fc98179, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:07:37,471 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-06 23:07:37,473 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:07:37,473 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-11-06 23:07:37,473 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:07:37,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:37,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 23:07:37,473 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-11-06 23:07:37,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:37,474 INFO L85 PathProgramCache]: Analyzing trace with hash 13294677, now seen corresponding path program 1 times [2023-11-06 23:07:37,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:37,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040878770] [2023-11-06 23:07:37,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:37,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:37,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:37,507 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 23:07:37,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:37,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040878770] [2023-11-06 23:07:37,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040878770] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:37,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:37,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:07:37,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629747465] [2023-11-06 23:07:37,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:37,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 23:07:37,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:37,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 23:07:37,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 23:07:37,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 96 [2023-11-06 23:07:37,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 84 flow. Second operand has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 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 23:07:37,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:37,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 96 [2023-11-06 23:07:37,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:37,607 INFO L124 PetriNetUnfolderBase]: 279/507 cut-off events. [2023-11-06 23:07:37,607 INFO L125 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES. [2023-11-06 23:07:37,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1039 conditions, 507 events. 279/507 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2343 event pairs, 279 based on Foata normal form. 0/485 useless extension candidates. Maximal degree in co-relation 195. Up to 450 conditions per place. [2023-11-06 23:07:37,614 INFO L140 encePairwiseOnDemand]: 80/96 looper letters, 14 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2023-11-06 23:07:37,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 17 transitions, 80 flow [2023-11-06 23:07:37,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 23:07:37,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 23:07:37,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 94 transitions. [2023-11-06 23:07:37,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2023-11-06 23:07:37,616 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 94 transitions. [2023-11-06 23:07:37,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 94 transitions. [2023-11-06 23:07:37,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:37,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 94 transitions. [2023-11-06 23:07:37,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 47.0) internal successors, (94), 2 states have internal predecessors, (94), 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 23:07:37,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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 23:07:37,619 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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 23:07:37,619 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 84 flow. Second operand 2 states and 94 transitions. [2023-11-06 23:07:37,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 17 transitions, 80 flow [2023-11-06 23:07:37,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 17 transitions, 78 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-06 23:07:37,621 INFO L231 Difference]: Finished difference. Result has 25 places, 17 transitions, 50 flow [2023-11-06 23:07:37,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=50, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2023-11-06 23:07:37,622 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -15 predicate places. [2023-11-06 23:07:37,623 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 50 flow [2023-11-06 23:07:37,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 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 23:07:37,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:37,623 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-11-06 23:07:37,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 23:07:37,624 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-11-06 23:07:37,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:37,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1382313515, now seen corresponding path program 1 times [2023-11-06 23:07:37,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:37,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764398064] [2023-11-06 23:07:37,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:37,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:07:37,643 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:07:37,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:07:37,661 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:07:37,661 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 23:07:37,661 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2023-11-06 23:07:37,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2023-11-06 23:07:37,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2023-11-06 23:07:37,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2023-11-06 23:07:37,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2023-11-06 23:07:37,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (15 of 21 remaining) [2023-11-06 23:07:37,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 21 remaining) [2023-11-06 23:07:37,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2023-11-06 23:07:37,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2023-11-06 23:07:37,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2023-11-06 23:07:37,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 21 remaining) [2023-11-06 23:07:37,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 21 remaining) [2023-11-06 23:07:37,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 21 remaining) [2023-11-06 23:07:37,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 21 remaining) [2023-11-06 23:07:37,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2023-11-06 23:07:37,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 21 remaining) [2023-11-06 23:07:37,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2023-11-06 23:07:37,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2023-11-06 23:07:37,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2023-11-06 23:07:37,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2023-11-06 23:07:37,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 21 remaining) [2023-11-06 23:07:37,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 23:07:37,667 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-06 23:07:37,667 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 23:07:37,668 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-06 23:07:37,692 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 23:07:37,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 174 flow [2023-11-06 23:07:37,708 INFO L124 PetriNetUnfolderBase]: 5/123 cut-off events. [2023-11-06 23:07:37,709 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-06 23:07:37,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 123 events. 5/123 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 234 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 106. Up to 10 conditions per place. [2023-11-06 23:07:37,710 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 73 transitions, 174 flow [2023-11-06 23:07:37,711 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 73 transitions, 174 flow [2023-11-06 23:07:37,711 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:07:37,712 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 73 transitions, 174 flow [2023-11-06 23:07:37,712 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 73 transitions, 174 flow [2023-11-06 23:07:37,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 174 flow [2023-11-06 23:07:37,726 INFO L124 PetriNetUnfolderBase]: 5/123 cut-off events. [2023-11-06 23:07:37,726 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-06 23:07:37,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 123 events. 5/123 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 234 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 106. Up to 10 conditions per place. [2023-11-06 23:07:37,730 INFO L119 LiptonReduction]: Number of co-enabled transitions 2816 [2023-11-06 23:07:39,784 INFO L134 LiptonReduction]: Checked pairs total: 8694 [2023-11-06 23:07:39,784 INFO L136 LiptonReduction]: Total number of compositions: 40 [2023-11-06 23:07:39,786 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:07:39,787 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;@7fc98179, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:07:39,788 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-11-06 23:07:39,789 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:07:39,790 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-06 23:07:39,790 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:07:39,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:39,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 23:07:39,790 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-06 23:07:39,791 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:39,791 INFO L85 PathProgramCache]: Analyzing trace with hash 17171317, now seen corresponding path program 1 times [2023-11-06 23:07:39,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:39,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254960262] [2023-11-06 23:07:39,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:39,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:39,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:39,813 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 23:07:39,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:39,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254960262] [2023-11-06 23:07:39,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254960262] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:39,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:39,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:07:39,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510793813] [2023-11-06 23:07:39,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:39,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 23:07:39,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:39,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 23:07:39,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 23:07:39,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 113 [2023-11-06 23:07:39,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 112 flow. Second operand has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 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 23:07:39,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:39,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 113 [2023-11-06 23:07:39,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:40,143 INFO L124 PetriNetUnfolderBase]: 1623/2539 cut-off events. [2023-11-06 23:07:40,144 INFO L125 PetriNetUnfolderBase]: For 1054/1054 co-relation queries the response was YES. [2023-11-06 23:07:40,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5248 conditions, 2539 events. 1623/2539 cut-off events. For 1054/1054 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 13363 event pairs, 1623 based on Foata normal form. 0/2453 useless extension candidates. Maximal degree in co-relation 1055. Up to 2306 conditions per place. [2023-11-06 23:07:40,168 INFO L140 encePairwiseOnDemand]: 92/113 looper letters, 18 selfloop transitions, 0 changer transitions 0/21 dead transitions. [2023-11-06 23:07:40,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 21 transitions, 106 flow [2023-11-06 23:07:40,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 23:07:40,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 23:07:40,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 109 transitions. [2023-11-06 23:07:40,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823008849557522 [2023-11-06 23:07:40,177 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 109 transitions. [2023-11-06 23:07:40,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 109 transitions. [2023-11-06 23:07:40,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:40,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 109 transitions. [2023-11-06 23:07:40,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 54.5) internal successors, (109), 2 states have internal predecessors, (109), 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 23:07:40,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 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 23:07:40,180 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 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 23:07:40,180 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 112 flow. Second operand 2 states and 109 transitions. [2023-11-06 23:07:40,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 21 transitions, 106 flow [2023-11-06 23:07:40,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 21 transitions, 100 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-11-06 23:07:40,185 INFO L231 Difference]: Finished difference. Result has 31 places, 21 transitions, 64 flow [2023-11-06 23:07:40,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=64, PETRI_PLACES=31, PETRI_TRANSITIONS=21} [2023-11-06 23:07:40,186 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -20 predicate places. [2023-11-06 23:07:40,186 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 21 transitions, 64 flow [2023-11-06 23:07:40,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 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 23:07:40,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:40,187 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:40,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 23:07:40,187 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-06 23:07:40,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:40,188 INFO L85 PathProgramCache]: Analyzing trace with hash 652357094, now seen corresponding path program 1 times [2023-11-06 23:07:40,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:40,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537516171] [2023-11-06 23:07:40,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:40,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:40,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:07:40,232 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:07:40,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:07:40,253 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:07:40,253 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 23:07:40,253 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2023-11-06 23:07:40,253 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (24 of 26 remaining) [2023-11-06 23:07:40,254 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (23 of 26 remaining) [2023-11-06 23:07:40,254 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 26 remaining) [2023-11-06 23:07:40,254 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (21 of 26 remaining) [2023-11-06 23:07:40,254 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (20 of 26 remaining) [2023-11-06 23:07:40,254 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 26 remaining) [2023-11-06 23:07:40,255 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 26 remaining) [2023-11-06 23:07:40,255 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 26 remaining) [2023-11-06 23:07:40,255 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 26 remaining) [2023-11-06 23:07:40,255 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (15 of 26 remaining) [2023-11-06 23:07:40,255 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 26 remaining) [2023-11-06 23:07:40,255 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 26 remaining) [2023-11-06 23:07:40,256 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 26 remaining) [2023-11-06 23:07:40,256 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 26 remaining) [2023-11-06 23:07:40,256 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 26 remaining) [2023-11-06 23:07:40,256 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 26 remaining) [2023-11-06 23:07:40,256 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 26 remaining) [2023-11-06 23:07:40,257 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 26 remaining) [2023-11-06 23:07:40,257 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 26 remaining) [2023-11-06 23:07:40,257 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 26 remaining) [2023-11-06 23:07:40,257 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 26 remaining) [2023-11-06 23:07:40,257 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 26 remaining) [2023-11-06 23:07:40,257 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 26 remaining) [2023-11-06 23:07:40,258 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 26 remaining) [2023-11-06 23:07:40,258 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 26 remaining) [2023-11-06 23:07:40,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 23:07:40,258 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-06 23:07:40,259 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 23:07:40,259 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-11-06 23:07:40,290 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 23:07:40,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 85 transitions, 210 flow [2023-11-06 23:07:40,316 INFO L124 PetriNetUnfolderBase]: 6/148 cut-off events. [2023-11-06 23:07:40,317 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-06 23:07:40,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 148 events. 6/148 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 289 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 136. Up to 12 conditions per place. [2023-11-06 23:07:40,318 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 85 transitions, 210 flow [2023-11-06 23:07:40,320 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 85 transitions, 210 flow [2023-11-06 23:07:40,320 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:07:40,320 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 85 transitions, 210 flow [2023-11-06 23:07:40,320 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 85 transitions, 210 flow [2023-11-06 23:07:40,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 85 transitions, 210 flow [2023-11-06 23:07:40,373 INFO L124 PetriNetUnfolderBase]: 6/148 cut-off events. [2023-11-06 23:07:40,374 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-06 23:07:40,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 148 events. 6/148 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 289 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 136. Up to 12 conditions per place. [2023-11-06 23:07:40,379 INFO L119 LiptonReduction]: Number of co-enabled transitions 4180 [2023-11-06 23:07:42,845 INFO L134 LiptonReduction]: Checked pairs total: 16398 [2023-11-06 23:07:42,845 INFO L136 LiptonReduction]: Total number of compositions: 45 [2023-11-06 23:07:42,847 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:07:42,848 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;@7fc98179, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:07:42,848 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-11-06 23:07:42,850 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:07:42,850 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-11-06 23:07:42,850 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:07:42,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:42,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 23:07:42,851 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-06 23:07:42,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:42,851 INFO L85 PathProgramCache]: Analyzing trace with hash 21540526, now seen corresponding path program 1 times [2023-11-06 23:07:42,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:42,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76695509] [2023-11-06 23:07:42,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:42,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:42,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:42,874 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 23:07:42,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:42,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76695509] [2023-11-06 23:07:42,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76695509] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:42,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:42,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:07:42,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253291942] [2023-11-06 23:07:42,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:42,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 23:07:42,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:42,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 23:07:42,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 23:07:42,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 130 [2023-11-06 23:07:42,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 142 flow. Second operand has 2 states, 2 states have (on average 40.0) internal successors, (80), 2 states have internal predecessors, (80), 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 23:07:42,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:42,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 130 [2023-11-06 23:07:42,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:44,557 INFO L124 PetriNetUnfolderBase]: 8535/12203 cut-off events. [2023-11-06 23:07:44,557 INFO L125 PetriNetUnfolderBase]: For 6750/6750 co-relation queries the response was YES. [2023-11-06 23:07:44,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25409 conditions, 12203 events. 8535/12203 cut-off events. For 6750/6750 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 69453 event pairs, 8535 based on Foata normal form. 0/11861 useless extension candidates. Maximal degree in co-relation 5327. Up to 11266 conditions per place. [2023-11-06 23:07:44,682 INFO L140 encePairwiseOnDemand]: 104/130 looper letters, 22 selfloop transitions, 0 changer transitions 0/25 dead transitions. [2023-11-06 23:07:44,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 25 transitions, 134 flow [2023-11-06 23:07:44,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 23:07:44,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 23:07:44,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 124 transitions. [2023-11-06 23:07:44,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47692307692307695 [2023-11-06 23:07:44,687 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 124 transitions. [2023-11-06 23:07:44,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 124 transitions. [2023-11-06 23:07:44,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:44,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 124 transitions. [2023-11-06 23:07:44,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 62.0) internal successors, (124), 2 states have internal predecessors, (124), 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 23:07:44,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 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 23:07:44,693 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 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 23:07:44,694 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 142 flow. Second operand 2 states and 124 transitions. [2023-11-06 23:07:44,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 25 transitions, 134 flow [2023-11-06 23:07:44,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 25 transitions, 122 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-11-06 23:07:44,706 INFO L231 Difference]: Finished difference. Result has 37 places, 25 transitions, 78 flow [2023-11-06 23:07:44,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, 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=78, PETRI_PLACES=37, PETRI_TRANSITIONS=25} [2023-11-06 23:07:44,709 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -25 predicate places. [2023-11-06 23:07:44,710 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 25 transitions, 78 flow [2023-11-06 23:07:44,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 40.0) internal successors, (80), 2 states have internal predecessors, (80), 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 23:07:44,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:44,710 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:44,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 23:07:44,711 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-06 23:07:44,711 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:44,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1292907086, now seen corresponding path program 1 times [2023-11-06 23:07:44,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:44,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945312883] [2023-11-06 23:07:44,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:44,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:44,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:07:44,755 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:07:44,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:07:44,795 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:07:44,800 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 23:07:44,800 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2023-11-06 23:07:44,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 31 remaining) [2023-11-06 23:07:44,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 31 remaining) [2023-11-06 23:07:44,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 31 remaining) [2023-11-06 23:07:44,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 31 remaining) [2023-11-06 23:07:44,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 31 remaining) [2023-11-06 23:07:44,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (24 of 31 remaining) [2023-11-06 23:07:44,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (23 of 31 remaining) [2023-11-06 23:07:44,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 31 remaining) [2023-11-06 23:07:44,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (21 of 31 remaining) [2023-11-06 23:07:44,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (20 of 31 remaining) [2023-11-06 23:07:44,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 31 remaining) [2023-11-06 23:07:44,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 31 remaining) [2023-11-06 23:07:44,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 31 remaining) [2023-11-06 23:07:44,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 31 remaining) [2023-11-06 23:07:44,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (15 of 31 remaining) [2023-11-06 23:07:44,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 31 remaining) [2023-11-06 23:07:44,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 31 remaining) [2023-11-06 23:07:44,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 31 remaining) [2023-11-06 23:07:44,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 31 remaining) [2023-11-06 23:07:44,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 31 remaining) [2023-11-06 23:07:44,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 31 remaining) [2023-11-06 23:07:44,808 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 31 remaining) [2023-11-06 23:07:44,808 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 31 remaining) [2023-11-06 23:07:44,808 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 31 remaining) [2023-11-06 23:07:44,808 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 31 remaining) [2023-11-06 23:07:44,808 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 31 remaining) [2023-11-06 23:07:44,809 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 31 remaining) [2023-11-06 23:07:44,809 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 31 remaining) [2023-11-06 23:07:44,809 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 31 remaining) [2023-11-06 23:07:44,809 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 31 remaining) [2023-11-06 23:07:44,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 23:07:44,810 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-06 23:07:44,811 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 23:07:44,811 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-11-06 23:07:44,864 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 23:07:44,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 97 transitions, 248 flow [2023-11-06 23:07:44,891 INFO L124 PetriNetUnfolderBase]: 7/173 cut-off events. [2023-11-06 23:07:44,891 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-11-06 23:07:44,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 173 events. 7/173 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 368 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 167. Up to 14 conditions per place. [2023-11-06 23:07:44,893 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 97 transitions, 248 flow [2023-11-06 23:07:44,902 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 97 transitions, 248 flow [2023-11-06 23:07:44,902 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:07:44,902 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 109 places, 97 transitions, 248 flow [2023-11-06 23:07:44,903 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 109 places, 97 transitions, 248 flow [2023-11-06 23:07:44,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 97 transitions, 248 flow [2023-11-06 23:07:44,932 INFO L124 PetriNetUnfolderBase]: 7/173 cut-off events. [2023-11-06 23:07:44,932 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-11-06 23:07:44,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 173 events. 7/173 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 368 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 167. Up to 14 conditions per place. [2023-11-06 23:07:44,941 INFO L119 LiptonReduction]: Number of co-enabled transitions 5808 [2023-11-06 23:07:47,791 INFO L134 LiptonReduction]: Checked pairs total: 19814 [2023-11-06 23:07:47,791 INFO L136 LiptonReduction]: Total number of compositions: 50 [2023-11-06 23:07:47,793 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:07:47,801 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;@7fc98179, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:07:47,801 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2023-11-06 23:07:47,804 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:07:47,804 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-06 23:07:47,804 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:07:47,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:47,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 23:07:47,804 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-11-06 23:07:47,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:47,805 INFO L85 PathProgramCache]: Analyzing trace with hash 26406151, now seen corresponding path program 1 times [2023-11-06 23:07:47,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:47,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301047286] [2023-11-06 23:07:47,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:47,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:47,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:47,824 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 23:07:47,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:47,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301047286] [2023-11-06 23:07:47,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301047286] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:47,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:47,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:07:47,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631635886] [2023-11-06 23:07:47,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:47,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 23:07:47,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:47,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 23:07:47,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 23:07:47,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 147 [2023-11-06 23:07:47,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 60 transitions, 174 flow. Second operand has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 states have internal predecessors, (86), 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 23:07:47,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:47,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 147 [2023-11-06 23:07:47,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:54,102 INFO L124 PetriNetUnfolderBase]: 42327/57003 cut-off events. [2023-11-06 23:07:54,102 INFO L125 PetriNetUnfolderBase]: For 39518/39518 co-relation queries the response was YES. [2023-11-06 23:07:54,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119362 conditions, 57003 events. 42327/57003 cut-off events. For 39518/39518 co-relation queries the response was YES. Maximal size of possible extension queue 2240. Compared 341167 event pairs, 42327 based on Foata normal form. 0/55637 useless extension candidates. Maximal degree in co-relation 25743. Up to 53250 conditions per place. [2023-11-06 23:07:54,701 INFO L140 encePairwiseOnDemand]: 116/147 looper letters, 26 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2023-11-06 23:07:54,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 29 transitions, 164 flow [2023-11-06 23:07:54,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 23:07:54,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 23:07:54,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 139 transitions. [2023-11-06 23:07:54,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47278911564625853 [2023-11-06 23:07:54,704 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 139 transitions. [2023-11-06 23:07:54,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 139 transitions. [2023-11-06 23:07:54,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:54,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 139 transitions. [2023-11-06 23:07:54,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 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 23:07:54,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 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 23:07:54,708 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 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 23:07:54,709 INFO L175 Difference]: Start difference. First operand has 73 places, 60 transitions, 174 flow. Second operand 2 states and 139 transitions. [2023-11-06 23:07:54,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 29 transitions, 164 flow [2023-11-06 23:07:54,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 29 transitions, 144 flow, removed 10 selfloop flow, removed 0 redundant places. [2023-11-06 23:07:54,732 INFO L231 Difference]: Finished difference. Result has 43 places, 29 transitions, 92 flow [2023-11-06 23:07:54,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=92, PETRI_PLACES=43, PETRI_TRANSITIONS=29} [2023-11-06 23:07:54,734 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -30 predicate places. [2023-11-06 23:07:54,734 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 29 transitions, 92 flow [2023-11-06 23:07:54,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 states have internal predecessors, (86), 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 23:07:54,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:54,735 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:54,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 23:07:54,735 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-11-06 23:07:54,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:54,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1536060630, now seen corresponding path program 1 times [2023-11-06 23:07:54,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:54,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450097902] [2023-11-06 23:07:54,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:54,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:54,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:07:54,759 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:07:54,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:07:54,797 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:07:54,798 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 23:07:54,798 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 36 remaining) [2023-11-06 23:07:54,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (34 of 36 remaining) [2023-11-06 23:07:54,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (33 of 36 remaining) [2023-11-06 23:07:54,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (32 of 36 remaining) [2023-11-06 23:07:54,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (31 of 36 remaining) [2023-11-06 23:07:54,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (30 of 36 remaining) [2023-11-06 23:07:54,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 36 remaining) [2023-11-06 23:07:54,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 36 remaining) [2023-11-06 23:07:54,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 36 remaining) [2023-11-06 23:07:54,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 36 remaining) [2023-11-06 23:07:54,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 36 remaining) [2023-11-06 23:07:54,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (24 of 36 remaining) [2023-11-06 23:07:54,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (23 of 36 remaining) [2023-11-06 23:07:54,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 36 remaining) [2023-11-06 23:07:54,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (21 of 36 remaining) [2023-11-06 23:07:54,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (20 of 36 remaining) [2023-11-06 23:07:54,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 36 remaining) [2023-11-06 23:07:54,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 36 remaining) [2023-11-06 23:07:54,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 36 remaining) [2023-11-06 23:07:54,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 36 remaining) [2023-11-06 23:07:54,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (15 of 36 remaining) [2023-11-06 23:07:54,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 36 remaining) [2023-11-06 23:07:54,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 36 remaining) [2023-11-06 23:07:54,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 36 remaining) [2023-11-06 23:07:54,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 36 remaining) [2023-11-06 23:07:54,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 36 remaining) [2023-11-06 23:07:54,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 36 remaining) [2023-11-06 23:07:54,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 36 remaining) [2023-11-06 23:07:54,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 36 remaining) [2023-11-06 23:07:54,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 36 remaining) [2023-11-06 23:07:54,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 36 remaining) [2023-11-06 23:07:54,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 36 remaining) [2023-11-06 23:07:54,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 36 remaining) [2023-11-06 23:07:54,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 36 remaining) [2023-11-06 23:07:54,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 36 remaining) [2023-11-06 23:07:54,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 36 remaining) [2023-11-06 23:07:54,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 23:07:54,805 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-06 23:07:54,807 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 23:07:54,807 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-11-06 23:07:54,846 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 23:07:54,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 109 transitions, 288 flow [2023-11-06 23:07:54,871 INFO L124 PetriNetUnfolderBase]: 8/198 cut-off events. [2023-11-06 23:07:54,872 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-11-06 23:07:54,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 198 events. 8/198 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 442 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 199. Up to 16 conditions per place. [2023-11-06 23:07:54,874 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 109 transitions, 288 flow [2023-11-06 23:07:54,876 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 109 transitions, 288 flow [2023-11-06 23:07:54,876 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:07:54,876 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 123 places, 109 transitions, 288 flow [2023-11-06 23:07:54,876 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 123 places, 109 transitions, 288 flow [2023-11-06 23:07:54,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 109 transitions, 288 flow [2023-11-06 23:07:54,900 INFO L124 PetriNetUnfolderBase]: 8/198 cut-off events. [2023-11-06 23:07:54,901 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-11-06 23:07:54,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 198 events. 8/198 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 442 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 199. Up to 16 conditions per place. [2023-11-06 23:07:54,910 INFO L119 LiptonReduction]: Number of co-enabled transitions 7700 [2023-11-06 23:07:57,911 INFO L134 LiptonReduction]: Checked pairs total: 31723 [2023-11-06 23:07:57,911 INFO L136 LiptonReduction]: Total number of compositions: 55 [2023-11-06 23:07:57,913 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:07:57,914 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;@7fc98179, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:07:57,914 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2023-11-06 23:07:57,915 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:07:57,915 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-11-06 23:07:57,915 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:07:57,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:57,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 23:07:57,915 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2023-11-06 23:07:57,916 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:57,916 INFO L85 PathProgramCache]: Analyzing trace with hash 31852772, now seen corresponding path program 1 times [2023-11-06 23:07:57,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:57,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688740963] [2023-11-06 23:07:57,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:57,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:57,929 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 23:07:57,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:57,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688740963] [2023-11-06 23:07:57,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688740963] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:57,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:57,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:07:57,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907530655] [2023-11-06 23:07:57,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:57,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 23:07:57,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:57,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 23:07:57,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 23:07:57,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 164 [2023-11-06 23:07:57,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 69 transitions, 208 flow. Second operand has 2 states, 2 states have (on average 46.0) internal successors, (92), 2 states have internal predecessors, (92), 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 23:07:57,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:57,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 164 [2023-11-06 23:07:57,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:08:26,337 INFO L124 PetriNetUnfolderBase]: 202071/260779 cut-off events. [2023-11-06 23:08:26,338 INFO L125 PetriNetUnfolderBase]: For 217694/217694 co-relation queries the response was YES. [2023-11-06 23:08:27,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 548419 conditions, 260779 events. 202071/260779 cut-off events. For 217694/217694 co-relation queries the response was YES. Maximal size of possible extension queue 8519. Compared 1625058 event pairs, 202071 based on Foata normal form. 0/255318 useless extension candidates. Maximal degree in co-relation 120719. Up to 245762 conditions per place.