./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76622e0-7a02-4a5e-8f6b-4c7e46940144/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76622e0-7a02-4a5e-8f6b-4c7e46940144/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_e76622e0-7a02-4a5e-8f6b-4c7e46940144/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76622e0-7a02-4a5e-8f6b-4c7e46940144/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76622e0-7a02-4a5e-8f6b-4c7e46940144/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_e76622e0-7a02-4a5e-8f6b-4c7e46940144/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 b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:26:02,234 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:26:02,299 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76622e0-7a02-4a5e-8f6b-4c7e46940144/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-06 22:26:02,305 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:26:02,306 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:26:02,332 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:26:02,333 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:26:02,333 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:26:02,334 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:26:02,335 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:26:02,336 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:26:02,337 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:26:02,337 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:26:02,338 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:26:02,339 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:26:02,339 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:26:02,340 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:26:02,341 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:26:02,341 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:26:02,342 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:26:02,343 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:26:02,346 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:26:02,346 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-06 22:26:02,347 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:26:02,347 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:26:02,348 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:26:02,348 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:26:02,349 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:26:02,350 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:26:02,350 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:26:02,352 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:26:02,352 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:26:02,352 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:26:02,353 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:26:02,353 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:26:02,353 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:26:02,353 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:26:02,354 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:26:02,354 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:26:02,354 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:26:02,355 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:26:02,355 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_e76622e0-7a02-4a5e-8f6b-4c7e46940144/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76622e0-7a02-4a5e-8f6b-4c7e46940144/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 [2023-11-06 22:26:02,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:26:02,726 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:26:02,729 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:26:02,730 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:26:02,731 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:26:02,732 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76622e0-7a02-4a5e-8f6b-4c7e46940144/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i [2023-11-06 22:26:05,859 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:26:06,238 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:26:06,239 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76622e0-7a02-4a5e-8f6b-4c7e46940144/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i [2023-11-06 22:26:06,270 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76622e0-7a02-4a5e-8f6b-4c7e46940144/bin/uautomizer-verify-WvqO1wxjHP/data/f1c26cf41/7112091fdce24288b2e22bd6075933a1/FLAG9f805b24d [2023-11-06 22:26:06,288 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76622e0-7a02-4a5e-8f6b-4c7e46940144/bin/uautomizer-verify-WvqO1wxjHP/data/f1c26cf41/7112091fdce24288b2e22bd6075933a1 [2023-11-06 22:26:06,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:26:06,298 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:26:06,302 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:26:06,302 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:26:06,307 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:26:06,308 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:26:06" (1/1) ... [2023-11-06 22:26:06,309 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c3d80c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:06, skipping insertion in model container [2023-11-06 22:26:06,310 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:26:06" (1/1) ... [2023-11-06 22:26:06,375 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:26:07,020 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:26:07,038 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:26:07,119 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:26:07,214 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:26:07,214 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:07 WrapperNode [2023-11-06 22:26:07,215 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:26:07,216 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:26:07,216 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:26:07,216 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:26:07,224 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:07" (1/1) ... [2023-11-06 22:26:07,256 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:07" (1/1) ... [2023-11-06 22:26:07,312 INFO L138 Inliner]: procedures = 270, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 101 [2023-11-06 22:26:07,312 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:26:07,313 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:26:07,313 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:26:07,313 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:26:07,323 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:07" (1/1) ... [2023-11-06 22:26:07,324 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:07" (1/1) ... [2023-11-06 22:26:07,336 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:07" (1/1) ... [2023-11-06 22:26:07,337 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:07" (1/1) ... [2023-11-06 22:26:07,344 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:07" (1/1) ... [2023-11-06 22:26:07,360 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:07" (1/1) ... [2023-11-06 22:26:07,368 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:07" (1/1) ... [2023-11-06 22:26:07,369 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:07" (1/1) ... [2023-11-06 22:26:07,373 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:26:07,373 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:26:07,374 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:26:07,374 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:26:07,375 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:07" (1/1) ... [2023-11-06 22:26:07,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:26:07,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76622e0-7a02-4a5e-8f6b-4c7e46940144/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:07,417 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76622e0-7a02-4a5e-8f6b-4c7e46940144/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:26:07,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76622e0-7a02-4a5e-8f6b-4c7e46940144/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:26:07,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:26:07,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:26:07,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:26:07,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:26:07,463 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 22:26:07,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:26:07,464 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-06 22:26:07,464 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-06 22:26:07,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:26:07,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:26:07,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:26:07,466 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:26:07,673 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:26:07,675 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:26:07,935 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:26:07,945 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:26:07,945 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-11-06 22:26:07,948 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:26:07 BoogieIcfgContainer [2023-11-06 22:26:07,948 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:26:07,950 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:26:07,951 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:26:07,954 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:26:07,955 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:26:06" (1/3) ... [2023-11-06 22:26:07,956 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46164ae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:26:07, skipping insertion in model container [2023-11-06 22:26:07,956 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:07" (2/3) ... [2023-11-06 22:26:07,957 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46164ae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:26:07, skipping insertion in model container [2023-11-06 22:26:07,957 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:26:07" (3/3) ... [2023-11-06 22:26:07,958 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_08-cond_racefree.i [2023-11-06 22:26:07,981 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:26:07,992 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:26:07,993 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-06 22:26:07,993 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:26:08,109 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-06 22:26:08,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 155 transitions, 317 flow [2023-11-06 22:26:08,265 INFO L124 PetriNetUnfolderBase]: 25/215 cut-off events. [2023-11-06 22:26:08,265 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:26:08,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 215 events. 25/215 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 640 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 109. Up to 6 conditions per place. [2023-11-06 22:26:08,276 INFO L82 GeneralOperation]: Start removeDead. Operand has 142 places, 155 transitions, 317 flow [2023-11-06 22:26:08,283 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 155 transitions, 317 flow [2023-11-06 22:26:08,287 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:26:08,298 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 142 places, 155 transitions, 317 flow [2023-11-06 22:26:08,301 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 142 places, 155 transitions, 317 flow [2023-11-06 22:26:08,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 155 transitions, 317 flow [2023-11-06 22:26:08,397 INFO L124 PetriNetUnfolderBase]: 25/215 cut-off events. [2023-11-06 22:26:08,397 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:26:08,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 215 events. 25/215 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 640 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 109. Up to 6 conditions per place. [2023-11-06 22:26:08,406 INFO L119 LiptonReduction]: Number of co-enabled transitions 5808 [2023-11-06 22:26:13,036 INFO L134 LiptonReduction]: Checked pairs total: 14975 [2023-11-06 22:26:13,050 INFO L136 LiptonReduction]: Total number of compositions: 136 [2023-11-06 22:26:13,080 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:26:13,091 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;@fa17ebe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:26:13,091 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-06 22:26:13,096 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:26:13,096 INFO L124 PetriNetUnfolderBase]: 1/10 cut-off events. [2023-11-06 22:26:13,096 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:26:13,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:26:13,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:26:13,098 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-11-06 22:26:13,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:13,104 INFO L85 PathProgramCache]: Analyzing trace with hash 18092758, now seen corresponding path program 1 times [2023-11-06 22:26:13,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:13,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736195054] [2023-11-06 22:26:13,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:13,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:13,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:13,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:26:13,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:13,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736195054] [2023-11-06 22:26:13,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736195054] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:13,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:13,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:26:13,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412576471] [2023-11-06 22:26:13,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:13,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:26:13,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:13,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:26:13,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:26:13,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 291 [2023-11-06 22:26:13,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 50 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:26:13,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:26:13,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 291 [2023-11-06 22:26:13,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:26:13,662 INFO L124 PetriNetUnfolderBase]: 133/343 cut-off events. [2023-11-06 22:26:13,662 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:26:13,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 631 conditions, 343 events. 133/343 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1663 event pairs, 0 based on Foata normal form. 35/321 useless extension candidates. Maximal degree in co-relation 598. Up to 268 conditions per place. [2023-11-06 22:26:13,667 INFO L140 encePairwiseOnDemand]: 277/291 looper letters, 36 selfloop transitions, 2 changer transitions 2/53 dead transitions. [2023-11-06 22:26:13,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 53 transitions, 193 flow [2023-11-06 22:26:13,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:26:13,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:26:13,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 460 transitions. [2023-11-06 22:26:13,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5269186712485682 [2023-11-06 22:26:13,686 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 460 transitions. [2023-11-06 22:26:13,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 460 transitions. [2023-11-06 22:26:13,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:26:13,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 460 transitions. [2023-11-06 22:26:13,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:26:13,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:26:13,704 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:26:13,706 INFO L175 Difference]: Start difference. First operand has 42 places, 50 transitions, 107 flow. Second operand 3 states and 460 transitions. [2023-11-06 22:26:13,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 53 transitions, 193 flow [2023-11-06 22:26:13,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 193 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:26:13,713 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 90 flow [2023-11-06 22:26:13,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2023-11-06 22:26:13,719 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2023-11-06 22:26:13,719 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 90 flow [2023-11-06 22:26:13,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:26:13,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:26:13,720 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-06 22:26:13,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:26:13,721 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-11-06 22:26:13,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:13,721 INFO L85 PathProgramCache]: Analyzing trace with hash 163127490, now seen corresponding path program 1 times [2023-11-06 22:26:13,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:13,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086751479] [2023-11-06 22:26:13,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:13,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:26:13,754 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:26:13,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:26:13,797 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:26:13,797 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:26:13,799 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2023-11-06 22:26:13,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2023-11-06 22:26:13,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2023-11-06 22:26:13,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2023-11-06 22:26:13,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2023-11-06 22:26:13,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2023-11-06 22:26:13,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2023-11-06 22:26:13,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2023-11-06 22:26:13,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2023-11-06 22:26:13,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2023-11-06 22:26:13,808 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2023-11-06 22:26:13,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:26:13,809 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-06 22:26:13,811 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:26:13,812 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-06 22:26:13,856 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 22:26:13,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 201 transitions, 418 flow [2023-11-06 22:26:13,926 INFO L124 PetriNetUnfolderBase]: 43/353 cut-off events. [2023-11-06 22:26:13,926 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 22:26:13,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 353 events. 43/353 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1280 event pairs, 0 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 217. Up to 9 conditions per place. [2023-11-06 22:26:13,932 INFO L82 GeneralOperation]: Start removeDead. Operand has 183 places, 201 transitions, 418 flow [2023-11-06 22:26:13,938 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 183 places, 201 transitions, 418 flow [2023-11-06 22:26:13,938 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:26:13,938 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 183 places, 201 transitions, 418 flow [2023-11-06 22:26:13,939 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 183 places, 201 transitions, 418 flow [2023-11-06 22:26:13,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 201 transitions, 418 flow [2023-11-06 22:26:14,008 INFO L124 PetriNetUnfolderBase]: 43/353 cut-off events. [2023-11-06 22:26:14,009 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 22:26:14,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 353 events. 43/353 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1280 event pairs, 0 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 217. Up to 9 conditions per place. [2023-11-06 22:26:14,027 INFO L119 LiptonReduction]: Number of co-enabled transitions 16456 [2023-11-06 22:26:18,183 INFO L134 LiptonReduction]: Checked pairs total: 57134 [2023-11-06 22:26:18,183 INFO L136 LiptonReduction]: Total number of compositions: 149 [2023-11-06 22:26:18,196 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:26:18,197 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;@fa17ebe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:26:18,197 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-11-06 22:26:18,200 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:26:18,201 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2023-11-06 22:26:18,201 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:26:18,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:26:18,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:26:18,201 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-06 22:26:18,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:18,202 INFO L85 PathProgramCache]: Analyzing trace with hash 30245751, now seen corresponding path program 1 times [2023-11-06 22:26:18,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:18,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425750640] [2023-11-06 22:26:18,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:18,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:18,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:18,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:26:18,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:18,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425750640] [2023-11-06 22:26:18,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425750640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:18,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:18,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:26:18,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658512576] [2023-11-06 22:26:18,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:18,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:26:18,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:18,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:26:18,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:26:18,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 350 [2023-11-06 22:26:18,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 85 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:26:18,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:26:18,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 350 [2023-11-06 22:26:18,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:26:19,210 INFO L124 PetriNetUnfolderBase]: 2604/5329 cut-off events. [2023-11-06 22:26:19,210 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2023-11-06 22:26:19,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9509 conditions, 5329 events. 2604/5329 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 39719 event pairs, 2188 based on Foata normal form. 648/5269 useless extension candidates. Maximal degree in co-relation 6301. Up to 4105 conditions per place. [2023-11-06 22:26:19,250 INFO L140 encePairwiseOnDemand]: 330/350 looper letters, 47 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2023-11-06 22:26:19,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 81 transitions, 276 flow [2023-11-06 22:26:19,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:26:19,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:26:19,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 589 transitions. [2023-11-06 22:26:19,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.560952380952381 [2023-11-06 22:26:19,257 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 589 transitions. [2023-11-06 22:26:19,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 589 transitions. [2023-11-06 22:26:19,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:26:19,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 589 transitions. [2023-11-06 22:26:19,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:26:19,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 350.0) internal successors, (1400), 4 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:26:19,267 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 350.0) internal successors, (1400), 4 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:26:19,267 INFO L175 Difference]: Start difference. First operand has 72 places, 85 transitions, 186 flow. Second operand 3 states and 589 transitions. [2023-11-06 22:26:19,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 81 transitions, 276 flow [2023-11-06 22:26:19,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 81 transitions, 276 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:26:19,274 INFO L231 Difference]: Finished difference. Result has 74 places, 70 transitions, 168 flow [2023-11-06 22:26:19,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=74, PETRI_TRANSITIONS=70} [2023-11-06 22:26:19,277 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 2 predicate places. [2023-11-06 22:26:19,277 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 70 transitions, 168 flow [2023-11-06 22:26:19,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:26:19,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:26:19,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:19,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:26:19,283 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-06 22:26:19,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:19,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1972222044, now seen corresponding path program 1 times [2023-11-06 22:26:19,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:19,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968580377] [2023-11-06 22:26:19,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:19,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:19,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:26:19,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:19,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968580377] [2023-11-06 22:26:19,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968580377] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:19,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:19,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:26:19,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695950832] [2023-11-06 22:26:19,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:19,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:26:19,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:19,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:26:19,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:26:19,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 350 [2023-11-06 22:26:19,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 70 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:26:19,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:26:19,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 350 [2023-11-06 22:26:19,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:26:21,501 INFO L124 PetriNetUnfolderBase]: 8865/16109 cut-off events. [2023-11-06 22:26:21,502 INFO L125 PetriNetUnfolderBase]: For 783/783 co-relation queries the response was YES. [2023-11-06 22:26:21,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31362 conditions, 16109 events. 8865/16109 cut-off events. For 783/783 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 123220 event pairs, 3529 based on Foata normal form. 0/14667 useless extension candidates. Maximal degree in co-relation 31256. Up to 7450 conditions per place. [2023-11-06 22:26:21,696 INFO L140 encePairwiseOnDemand]: 331/350 looper letters, 81 selfloop transitions, 14 changer transitions 0/114 dead transitions. [2023-11-06 22:26:21,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 114 transitions, 466 flow [2023-11-06 22:26:21,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:26:21,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:26:21,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 575 transitions. [2023-11-06 22:26:21,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2023-11-06 22:26:21,699 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 575 transitions. [2023-11-06 22:26:21,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 575 transitions. [2023-11-06 22:26:21,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:26:21,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 575 transitions. [2023-11-06 22:26:21,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:26:21,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 350.0) internal successors, (1400), 4 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:26:21,707 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 350.0) internal successors, (1400), 4 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:26:21,707 INFO L175 Difference]: Start difference. First operand has 74 places, 70 transitions, 168 flow. Second operand 3 states and 575 transitions. [2023-11-06 22:26:21,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 114 transitions, 466 flow [2023-11-06 22:26:21,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 114 transitions, 463 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:26:21,715 INFO L231 Difference]: Finished difference. Result has 77 places, 84 transitions, 288 flow [2023-11-06 22:26:21,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=77, PETRI_TRANSITIONS=84} [2023-11-06 22:26:21,719 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 5 predicate places. [2023-11-06 22:26:21,719 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 84 transitions, 288 flow [2023-11-06 22:26:21,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:26:21,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:26:21,720 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-06 22:26:21,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:26:21,721 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-06 22:26:21,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:21,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1343583512, now seen corresponding path program 1 times [2023-11-06 22:26:21,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:21,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525617950] [2023-11-06 22:26:21,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:21,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:21,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:26:21,766 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:26:21,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:26:21,788 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:26:21,788 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:26:21,788 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2023-11-06 22:26:21,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2023-11-06 22:26:21,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2023-11-06 22:26:21,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2023-11-06 22:26:21,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2023-11-06 22:26:21,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2023-11-06 22:26:21,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2023-11-06 22:26:21,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2023-11-06 22:26:21,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2023-11-06 22:26:21,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2023-11-06 22:26:21,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2023-11-06 22:26:21,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2023-11-06 22:26:21,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2023-11-06 22:26:21,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2023-11-06 22:26:21,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2023-11-06 22:26:21,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:26:21,792 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-06 22:26:21,793 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:26:21,793 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-06 22:26:21,823 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:26:21,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 224 places, 247 transitions, 521 flow [2023-11-06 22:26:21,912 INFO L124 PetriNetUnfolderBase]: 66/538 cut-off events. [2023-11-06 22:26:21,912 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-06 22:26:21,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 563 conditions, 538 events. 66/538 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2134 event pairs, 1 based on Foata normal form. 0/444 useless extension candidates. Maximal degree in co-relation 361. Up to 16 conditions per place. [2023-11-06 22:26:21,917 INFO L82 GeneralOperation]: Start removeDead. Operand has 224 places, 247 transitions, 521 flow [2023-11-06 22:26:21,922 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 224 places, 247 transitions, 521 flow [2023-11-06 22:26:21,922 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:26:21,922 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 224 places, 247 transitions, 521 flow [2023-11-06 22:26:21,923 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 224 places, 247 transitions, 521 flow [2023-11-06 22:26:21,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 224 places, 247 transitions, 521 flow [2023-11-06 22:26:22,003 INFO L124 PetriNetUnfolderBase]: 66/538 cut-off events. [2023-11-06 22:26:22,003 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-06 22:26:22,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 563 conditions, 538 events. 66/538 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2134 event pairs, 1 based on Foata normal form. 0/444 useless extension candidates. Maximal degree in co-relation 361. Up to 16 conditions per place. [2023-11-06 22:26:22,035 INFO L119 LiptonReduction]: Number of co-enabled transitions 30888 [2023-11-06 22:26:26,616 INFO L134 LiptonReduction]: Checked pairs total: 120490 [2023-11-06 22:26:26,617 INFO L136 LiptonReduction]: Total number of compositions: 172 [2023-11-06 22:26:26,619 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:26:26,620 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;@fa17ebe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:26:26,620 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-11-06 22:26:26,622 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:26:26,622 INFO L124 PetriNetUnfolderBase]: 1/10 cut-off events. [2023-11-06 22:26:26,622 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:26:26,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:26:26,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:26:26,623 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 22:26:26,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:26,624 INFO L85 PathProgramCache]: Analyzing trace with hash 44562253, now seen corresponding path program 1 times [2023-11-06 22:26:26,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:26,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427541057] [2023-11-06 22:26:26,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:26,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:26,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:26,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:26:26,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:26,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427541057] [2023-11-06 22:26:26,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427541057] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:26,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:26,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:26:26,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353971315] [2023-11-06 22:26:26,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:26,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:26:26,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:26,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:26:26,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:26:26,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 419 [2023-11-06 22:26:26,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 116 transitions, 259 flow. Second operand has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:26:26,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:26:26,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 419 [2023-11-06 22:26:26,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:26:35,201 INFO L124 PetriNetUnfolderBase]: 44830/74629 cut-off events. [2023-11-06 22:26:35,202 INFO L125 PetriNetUnfolderBase]: For 1391/1391 co-relation queries the response was YES. [2023-11-06 22:26:35,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137702 conditions, 74629 events. 44830/74629 cut-off events. For 1391/1391 co-relation queries the response was YES. Maximal size of possible extension queue 1874. Compared 668195 event pairs, 41684 based on Foata normal form. 11872/78361 useless extension candidates. Maximal degree in co-relation 65920. Up to 62105 conditions per place. [2023-11-06 22:26:35,696 INFO L140 encePairwiseOnDemand]: 393/419 looper letters, 59 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2023-11-06 22:26:35,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 106 transitions, 361 flow [2023-11-06 22:26:35,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:26:35,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:26:35,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 721 transitions. [2023-11-06 22:26:35,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.573587907716786 [2023-11-06 22:26:35,700 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 721 transitions. [2023-11-06 22:26:35,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 721 transitions. [2023-11-06 22:26:35,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:26:35,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 721 transitions. [2023-11-06 22:26:35,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.33333333333334) internal successors, (721), 3 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:26:35,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:26:35,710 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:26:35,710 INFO L175 Difference]: Start difference. First operand has 98 places, 116 transitions, 259 flow. Second operand 3 states and 721 transitions. [2023-11-06 22:26:35,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 106 transitions, 361 flow [2023-11-06 22:26:35,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 106 transitions, 361 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:26:35,719 INFO L231 Difference]: Finished difference. Result has 100 places, 95 transitions, 229 flow [2023-11-06 22:26:35,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=419, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=229, PETRI_PLACES=100, PETRI_TRANSITIONS=95} [2023-11-06 22:26:35,722 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 2 predicate places. [2023-11-06 22:26:35,723 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 95 transitions, 229 flow [2023-11-06 22:26:35,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:26:35,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:26:35,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:35,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:26:35,724 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 22:26:35,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:35,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1608510942, now seen corresponding path program 1 times [2023-11-06 22:26:35,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:35,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367123684] [2023-11-06 22:26:35,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:35,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:35,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:35,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:26:35,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:35,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367123684] [2023-11-06 22:26:35,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367123684] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:35,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:35,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:26:35,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462257757] [2023-11-06 22:26:35,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:35,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:26:35,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:35,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:26:35,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:26:35,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 419 [2023-11-06 22:26:35,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 95 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:26:35,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:26:35,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 419 [2023-11-06 22:26:35,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand