./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version a0165632 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_9358e63d-4b66-472f-8fb8-3017d19ea111/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9358e63d-4b66-472f-8fb8-3017d19ea111/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9358e63d-4b66-472f-8fb8-3017d19ea111/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9358e63d-4b66-472f-8fb8-3017d19ea111/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9358e63d-4b66-472f-8fb8-3017d19ea111/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9358e63d-4b66-472f-8fb8-3017d19ea111/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:23:17,339 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:23:17,433 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9358e63d-4b66-472f-8fb8-3017d19ea111/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-08 18:23:17,441 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:23:17,441 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:23:17,473 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:23:17,473 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:23:17,474 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:23:17,476 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:23:17,478 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:23:17,478 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:23:17,479 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:23:17,479 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:23:17,479 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:23:17,480 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 18:23:17,480 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 18:23:17,481 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 18:23:17,481 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 18:23:17,484 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:23:17,484 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 18:23:17,487 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:23:17,488 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 18:23:17,488 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-08 18:23:17,488 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:23:17,488 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 18:23:17,489 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 18:23:17,489 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 18:23:17,490 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:23:17,490 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:23:17,491 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:23:17,491 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:23:17,492 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:23:17,492 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:23:17,492 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:23:17,493 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 18:23:17,493 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 18:23:17,493 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 18:23:17,494 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:23:17,494 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:23:17,494 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:23:17,494 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:23:17,495 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_9358e63d-4b66-472f-8fb8-3017d19ea111/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9358e63d-4b66-472f-8fb8-3017d19ea111/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 [2024-11-08 18:23:17,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:23:17,803 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:23:17,808 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:23:17,810 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:23:17,812 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:23:17,813 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9358e63d-4b66-472f-8fb8-3017d19ea111/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i Unable to find full path for "g++" [2024-11-08 18:23:19,756 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:23:20,101 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:23:20,101 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9358e63d-4b66-472f-8fb8-3017d19ea111/sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i [2024-11-08 18:23:20,118 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9358e63d-4b66-472f-8fb8-3017d19ea111/bin/uautomizer-verify-jihMAELWvX/data/7c1d1cbe2/af192f9aa1e6445196b60f01e6ffcc27/FLAG8c258d08f [2024-11-08 18:23:20,333 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9358e63d-4b66-472f-8fb8-3017d19ea111/bin/uautomizer-verify-jihMAELWvX/data/7c1d1cbe2/af192f9aa1e6445196b60f01e6ffcc27 [2024-11-08 18:23:20,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:23:20,337 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:23:20,339 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:23:20,339 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:23:20,347 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:23:20,348 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:23:20" (1/1) ... [2024-11-08 18:23:20,349 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60ca1acb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:23:20, skipping insertion in model container [2024-11-08 18:23:20,349 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:23:20" (1/1) ... [2024-11-08 18:23:20,395 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:23:20,875 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:23:20,905 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:23:20,974 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:23:21,039 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:23:21,040 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:23:21 WrapperNode [2024-11-08 18:23:21,040 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:23:21,042 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:23:21,042 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:23:21,042 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:23:21,052 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:23:21" (1/1) ... [2024-11-08 18:23:21,077 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:23:21" (1/1) ... [2024-11-08 18:23:21,119 INFO L138 Inliner]: procedures = 171, calls = 42, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2024-11-08 18:23:21,119 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:23:21,120 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:23:21,120 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:23:21,120 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:23:21,135 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:23:21" (1/1) ... [2024-11-08 18:23:21,136 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:23:21" (1/1) ... [2024-11-08 18:23:21,144 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:23:21" (1/1) ... [2024-11-08 18:23:21,144 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:23:21" (1/1) ... [2024-11-08 18:23:21,160 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:23:21" (1/1) ... [2024-11-08 18:23:21,168 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:23:21" (1/1) ... [2024-11-08 18:23:21,169 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:23:21" (1/1) ... [2024-11-08 18:23:21,171 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:23:21" (1/1) ... [2024-11-08 18:23:21,177 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:23:21,181 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:23:21,181 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:23:21,181 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:23:21,182 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:23:21" (1/1) ... [2024-11-08 18:23:21,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:23:21,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9358e63d-4b66-472f-8fb8-3017d19ea111/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:23:21,232 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9358e63d-4b66-472f-8fb8-3017d19ea111/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:23:21,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9358e63d-4b66-472f-8fb8-3017d19ea111/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:23:21,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-08 18:23:21,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-08 18:23:21,273 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-08 18:23:21,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:23:21,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 18:23:21,274 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-08 18:23:21,275 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-08 18:23:21,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 18:23:21,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-08 18:23:21,276 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-08 18:23:21,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:23:21,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:23:21,279 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 18:23:21,452 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:23:21,454 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:23:21,852 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 18:23:21,852 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:23:21,900 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:23:21,901 INFO L316 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-08 18:23:21,901 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:23:21 BoogieIcfgContainer [2024-11-08 18:23:21,902 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:23:21,905 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:23:21,906 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:23:21,910 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:23:21,910 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:23:20" (1/3) ... [2024-11-08 18:23:21,911 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b1b9a6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:23:21, skipping insertion in model container [2024-11-08 18:23:21,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:23:21" (2/3) ... [2024-11-08 18:23:21,912 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b1b9a6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:23:21, skipping insertion in model container [2024-11-08 18:23:21,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:23:21" (3/3) ... [2024-11-08 18:23:21,914 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_01-simple_racing.i [2024-11-08 18:23:21,947 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:23:21,948 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-11-08 18:23:21,948 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 18:23:22,043 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-08 18:23:22,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 139 places, 149 transitions, 305 flow [2024-11-08 18:23:22,270 INFO L124 PetriNetUnfolderBase]: 19/210 cut-off events. [2024-11-08 18:23:22,270 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-08 18:23:22,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 210 events. 19/210 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 645 event pairs, 0 based on Foata normal form. 0/178 useless extension candidates. Maximal degree in co-relation 111. Up to 4 conditions per place. [2024-11-08 18:23:22,280 INFO L82 GeneralOperation]: Start removeDead. Operand has 139 places, 149 transitions, 305 flow [2024-11-08 18:23:22,285 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 139 places, 149 transitions, 305 flow [2024-11-08 18:23:22,302 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:23:22,313 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@e9ac91a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:23:22,314 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-11-08 18:23:22,333 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 18:23:22,333 INFO L124 PetriNetUnfolderBase]: 1/51 cut-off events. [2024-11-08 18:23:22,333 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 18:23:22,334 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:23:22,334 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:23:22,335 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-11-08 18:23:22,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:23:22,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1350648660, now seen corresponding path program 1 times [2024-11-08 18:23:22,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:23:22,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128386725] [2024-11-08 18:23:22,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:23:22,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:23:22,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:23:22,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:23:22,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:23:22,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128386725] [2024-11-08 18:23:22,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128386725] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:23:22,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:23:22,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:23:22,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046811492] [2024-11-08 18:23:22,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:23:22,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:23:22,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:23:22,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:23:22,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:23:22,888 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 149 [2024-11-08 18:23:22,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 149 transitions, 305 flow. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 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) [2024-11-08 18:23:22,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:23:22,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 149 [2024-11-08 18:23:22,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:23:23,155 INFO L124 PetriNetUnfolderBase]: 63/563 cut-off events. [2024-11-08 18:23:23,157 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-08 18:23:23,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 691 conditions, 563 events. 63/563 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2698 event pairs, 0 based on Foata normal form. 59/564 useless extension candidates. Maximal degree in co-relation 606. Up to 115 conditions per place. [2024-11-08 18:23:23,169 INFO L140 encePairwiseOnDemand]: 135/149 looper letters, 23 selfloop transitions, 2 changer transitions 0/143 dead transitions. [2024-11-08 18:23:23,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 143 transitions, 343 flow [2024-11-08 18:23:23,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:23:23,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:23:23,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 400 transitions. [2024-11-08 18:23:23,191 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8948545861297539 [2024-11-08 18:23:23,195 INFO L175 Difference]: Start difference. First operand has 139 places, 149 transitions, 305 flow. Second operand 3 states and 400 transitions. [2024-11-08 18:23:23,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 143 transitions, 343 flow [2024-11-08 18:23:23,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 143 transitions, 343 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 18:23:23,207 INFO L231 Difference]: Finished difference. Result has 140 places, 137 transitions, 291 flow [2024-11-08 18:23:23,210 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=291, PETRI_PLACES=140, PETRI_TRANSITIONS=137} [2024-11-08 18:23:23,217 INFO L277 CegarLoopForPetriNet]: 139 programPoint places, 1 predicate places. [2024-11-08 18:23:23,218 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 137 transitions, 291 flow [2024-11-08 18:23:23,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 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) [2024-11-08 18:23:23,219 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:23:23,219 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:23:23,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 18:23:23,220 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-11-08 18:23:23,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:23:23,222 INFO L85 PathProgramCache]: Analyzing trace with hash 836233628, now seen corresponding path program 1 times [2024-11-08 18:23:23,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:23:23,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481959174] [2024-11-08 18:23:23,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:23:23,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:23:23,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:23:24,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:23:24,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:23:24,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481959174] [2024-11-08 18:23:24,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481959174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:23:24,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:23:24,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 18:23:24,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978483529] [2024-11-08 18:23:24,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:23:24,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:23:24,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:23:24,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:23:24,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:23:24,341 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 149 [2024-11-08 18:23:24,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 137 transitions, 291 flow. Second operand has 6 states, 6 states have (on average 109.5) internal successors, (657), 6 states have internal predecessors, (657), 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) [2024-11-08 18:23:24,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:23:24,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 149 [2024-11-08 18:23:24,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:23:24,560 INFO L124 PetriNetUnfolderBase]: 118/691 cut-off events. [2024-11-08 18:23:24,561 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-08 18:23:24,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 975 conditions, 691 events. 118/691 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3889 event pairs, 66 based on Foata normal form. 0/623 useless extension candidates. Maximal degree in co-relation 876. Up to 181 conditions per place. [2024-11-08 18:23:24,565 INFO L140 encePairwiseOnDemand]: 143/149 looper letters, 48 selfloop transitions, 5 changer transitions 0/160 dead transitions. [2024-11-08 18:23:24,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 160 transitions, 443 flow [2024-11-08 18:23:24,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:23:24,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 18:23:24,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 702 transitions. [2024-11-08 18:23:24,569 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.785234899328859 [2024-11-08 18:23:24,570 INFO L175 Difference]: Start difference. First operand has 140 places, 137 transitions, 291 flow. Second operand 6 states and 702 transitions. [2024-11-08 18:23:24,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 160 transitions, 443 flow [2024-11-08 18:23:24,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 160 transitions, 439 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 18:23:24,575 INFO L231 Difference]: Finished difference. Result has 142 places, 136 transitions, 295 flow [2024-11-08 18:23:24,575 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=295, PETRI_PLACES=142, PETRI_TRANSITIONS=136} [2024-11-08 18:23:24,576 INFO L277 CegarLoopForPetriNet]: 139 programPoint places, 3 predicate places. [2024-11-08 18:23:24,576 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 136 transitions, 295 flow [2024-11-08 18:23:24,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 109.5) internal successors, (657), 6 states have internal predecessors, (657), 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) [2024-11-08 18:23:24,577 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:23:24,577 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:23:24,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 18:23:24,578 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-11-08 18:23:24,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:23:24,579 INFO L85 PathProgramCache]: Analyzing trace with hash -749434206, now seen corresponding path program 1 times [2024-11-08 18:23:24,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:23:24,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472793721] [2024-11-08 18:23:24,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:23:24,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:23:24,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:23:24,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:23:24,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:23:24,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472793721] [2024-11-08 18:23:24,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472793721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:23:24,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:23:24,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:23:24,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344082046] [2024-11-08 18:23:24,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:23:24,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:23:24,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:23:24,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:23:24,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:23:24,660 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 149 [2024-11-08 18:23:24,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 136 transitions, 295 flow. Second operand has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 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) [2024-11-08 18:23:24,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:23:24,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 149 [2024-11-08 18:23:24,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:23:24,848 INFO L124 PetriNetUnfolderBase]: 105/824 cut-off events. [2024-11-08 18:23:24,848 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-08 18:23:24,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1061 conditions, 824 events. 105/824 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 4789 event pairs, 30 based on Foata normal form. 0/742 useless extension candidates. Maximal degree in co-relation 991. Up to 125 conditions per place. [2024-11-08 18:23:24,855 INFO L140 encePairwiseOnDemand]: 140/149 looper letters, 30 selfloop transitions, 6 changer transitions 0/149 dead transitions. [2024-11-08 18:23:24,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 149 transitions, 396 flow [2024-11-08 18:23:24,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:23:24,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:23:24,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions. [2024-11-08 18:23:24,857 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8590604026845637 [2024-11-08 18:23:24,858 INFO L175 Difference]: Start difference. First operand has 142 places, 136 transitions, 295 flow. Second operand 3 states and 384 transitions. [2024-11-08 18:23:24,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 149 transitions, 396 flow [2024-11-08 18:23:24,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 149 transitions, 386 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-08 18:23:24,865 INFO L231 Difference]: Finished difference. Result has 139 places, 138 transitions, 323 flow [2024-11-08 18:23:24,866 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=323, PETRI_PLACES=139, PETRI_TRANSITIONS=138} [2024-11-08 18:23:24,866 INFO L277 CegarLoopForPetriNet]: 139 programPoint places, 0 predicate places. [2024-11-08 18:23:24,867 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 138 transitions, 323 flow [2024-11-08 18:23:24,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 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) [2024-11-08 18:23:24,867 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:23:24,867 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:23:24,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 18:23:24,868 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-11-08 18:23:24,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:23:24,870 INFO L85 PathProgramCache]: Analyzing trace with hash -880282019, now seen corresponding path program 1 times [2024-11-08 18:23:24,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:23:24,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059449800] [2024-11-08 18:23:24,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:23:24,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:23:24,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:23:24,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:23:24,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:23:24,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059449800] [2024-11-08 18:23:24,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059449800] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:23:24,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:23:24,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:23:24,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759315829] [2024-11-08 18:23:24,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:23:24,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:23:24,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:23:24,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:23:24,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:23:24,983 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 149 [2024-11-08 18:23:24,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 138 transitions, 323 flow. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 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) [2024-11-08 18:23:24,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:23:24,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 149 [2024-11-08 18:23:24,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:23:25,173 INFO L124 PetriNetUnfolderBase]: 107/824 cut-off events. [2024-11-08 18:23:25,173 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2024-11-08 18:23:25,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1159 conditions, 824 events. 107/824 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 4880 event pairs, 60 based on Foata normal form. 0/743 useless extension candidates. Maximal degree in co-relation 1086. Up to 189 conditions per place. [2024-11-08 18:23:25,178 INFO L140 encePairwiseOnDemand]: 144/149 looper letters, 27 selfloop transitions, 4 changer transitions 0/145 dead transitions. [2024-11-08 18:23:25,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 145 transitions, 403 flow [2024-11-08 18:23:25,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:23:25,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:23:25,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 380 transitions. [2024-11-08 18:23:25,180 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8501118568232662 [2024-11-08 18:23:25,181 INFO L175 Difference]: Start difference. First operand has 139 places, 138 transitions, 323 flow. Second operand 3 states and 380 transitions. [2024-11-08 18:23:25,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 145 transitions, 403 flow [2024-11-08 18:23:25,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 145 transitions, 389 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 18:23:25,188 INFO L231 Difference]: Finished difference. Result has 141 places, 141 transitions, 343 flow [2024-11-08 18:23:25,192 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=343, PETRI_PLACES=141, PETRI_TRANSITIONS=141} [2024-11-08 18:23:25,193 INFO L277 CegarLoopForPetriNet]: 139 programPoint places, 2 predicate places. [2024-11-08 18:23:25,193 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 141 transitions, 343 flow [2024-11-08 18:23:25,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 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) [2024-11-08 18:23:25,193 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:23:25,194 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:23:25,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 18:23:25,194 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-11-08 18:23:25,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:23:25,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1482092442, now seen corresponding path program 1 times [2024-11-08 18:23:25,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:23:25,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819926073] [2024-11-08 18:23:25,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:23:25,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:23:25,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 18:23:25,243 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 18:23:25,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 18:23:25,305 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 18:23:25,306 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 18:23:25,307 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2024-11-08 18:23:25,309 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (10 of 12 remaining) [2024-11-08 18:23:25,309 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 12 remaining) [2024-11-08 18:23:25,310 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (8 of 12 remaining) [2024-11-08 18:23:25,310 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 12 remaining) [2024-11-08 18:23:25,310 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 12 remaining) [2024-11-08 18:23:25,311 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 12 remaining) [2024-11-08 18:23:25,311 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 12 remaining) [2024-11-08 18:23:25,311 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 12 remaining) [2024-11-08 18:23:25,312 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 12 remaining) [2024-11-08 18:23:25,312 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 12 remaining) [2024-11-08 18:23:25,312 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 12 remaining) [2024-11-08 18:23:25,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 18:23:25,314 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-08 18:23:25,317 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-08 18:23:25,317 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-08 18:23:25,370 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-08 18:23:25,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 198 transitions, 412 flow [2024-11-08 18:23:25,451 INFO L124 PetriNetUnfolderBase]: 34/349 cut-off events. [2024-11-08 18:23:25,451 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-08 18:23:25,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 361 conditions, 349 events. 34/349 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1174 event pairs, 0 based on Foata normal form. 0/293 useless extension candidates. Maximal degree in co-relation 212. Up to 8 conditions per place. [2024-11-08 18:23:25,456 INFO L82 GeneralOperation]: Start removeDead. Operand has 183 places, 198 transitions, 412 flow [2024-11-08 18:23:25,460 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 183 places, 198 transitions, 412 flow [2024-11-08 18:23:25,461 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:23:25,462 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@e9ac91a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:23:25,463 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-11-08 18:23:25,469 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 18:23:25,469 INFO L124 PetriNetUnfolderBase]: 1/51 cut-off events. [2024-11-08 18:23:25,469 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 18:23:25,470 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:23:25,470 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:23:25,470 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-08 18:23:25,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:23:25,471 INFO L85 PathProgramCache]: Analyzing trace with hash 601199188, now seen corresponding path program 1 times [2024-11-08 18:23:25,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:23:25,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582907022] [2024-11-08 18:23:25,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:23:25,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:23:25,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:23:25,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:23:25,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:23:25,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582907022] [2024-11-08 18:23:25,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582907022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:23:25,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:23:25,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:23:25,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330955093] [2024-11-08 18:23:25,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:23:25,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:23:25,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:23:25,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:23:25,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:23:25,594 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 198 [2024-11-08 18:23:25,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 198 transitions, 412 flow. Second operand has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:25,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:23:25,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 198 [2024-11-08 18:23:25,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:23:26,572 INFO L124 PetriNetUnfolderBase]: 860/4445 cut-off events. [2024-11-08 18:23:26,572 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2024-11-08 18:23:26,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5854 conditions, 4445 events. 860/4445 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 41333 event pairs, 703 based on Foata normal form. 684/4672 useless extension candidates. Maximal degree in co-relation 4362. Up to 1359 conditions per place. [2024-11-08 18:23:26,613 INFO L140 encePairwiseOnDemand]: 178/198 looper letters, 32 selfloop transitions, 2 changer transitions 0/187 dead transitions. [2024-11-08 18:23:26,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 187 transitions, 458 flow [2024-11-08 18:23:26,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:23:26,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:23:26,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 520 transitions. [2024-11-08 18:23:26,617 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8754208754208754 [2024-11-08 18:23:26,617 INFO L175 Difference]: Start difference. First operand has 183 places, 198 transitions, 412 flow. Second operand 3 states and 520 transitions. [2024-11-08 18:23:26,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 187 transitions, 458 flow [2024-11-08 18:23:26,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 187 transitions, 458 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 18:23:26,623 INFO L231 Difference]: Finished difference. Result has 184 places, 181 transitions, 390 flow [2024-11-08 18:23:26,624 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=390, PETRI_PLACES=184, PETRI_TRANSITIONS=181} [2024-11-08 18:23:26,626 INFO L277 CegarLoopForPetriNet]: 183 programPoint places, 1 predicate places. [2024-11-08 18:23:26,627 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 181 transitions, 390 flow [2024-11-08 18:23:26,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:26,628 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:23:26,629 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:23:26,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 18:23:26,629 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-08 18:23:26,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:23:26,630 INFO L85 PathProgramCache]: Analyzing trace with hash -772785502, now seen corresponding path program 1 times [2024-11-08 18:23:26,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:23:26,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836608284] [2024-11-08 18:23:26,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:23:26,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:23:26,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:23:27,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:23:27,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:23:27,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836608284] [2024-11-08 18:23:27,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836608284] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:23:27,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:23:27,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 18:23:27,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081484260] [2024-11-08 18:23:27,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:23:27,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:23:27,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:23:27,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:23:27,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:23:27,229 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 198 [2024-11-08 18:23:27,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 181 transitions, 390 flow. Second operand has 6 states, 6 states have (on average 144.5) internal successors, (867), 6 states have internal predecessors, (867), 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) [2024-11-08 18:23:27,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:23:27,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 198 [2024-11-08 18:23:27,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:23:28,444 INFO L124 PetriNetUnfolderBase]: 1838/5921 cut-off events. [2024-11-08 18:23:28,445 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2024-11-08 18:23:28,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8989 conditions, 5921 events. 1838/5921 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 55668 event pairs, 222 based on Foata normal form. 0/5465 useless extension candidates. Maximal degree in co-relation 1287. Up to 2015 conditions per place. [2024-11-08 18:23:28,500 INFO L140 encePairwiseOnDemand]: 192/198 looper letters, 80 selfloop transitions, 6 changer transitions 0/228 dead transitions. [2024-11-08 18:23:28,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 228 transitions, 656 flow [2024-11-08 18:23:28,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:23:28,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 18:23:28,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 944 transitions. [2024-11-08 18:23:28,505 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7946127946127947 [2024-11-08 18:23:28,505 INFO L175 Difference]: Start difference. First operand has 184 places, 181 transitions, 390 flow. Second operand 6 states and 944 transitions. [2024-11-08 18:23:28,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 228 transitions, 656 flow [2024-11-08 18:23:28,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 228 transitions, 654 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 18:23:28,513 INFO L231 Difference]: Finished difference. Result has 187 places, 180 transitions, 398 flow [2024-11-08 18:23:28,514 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=398, PETRI_PLACES=187, PETRI_TRANSITIONS=180} [2024-11-08 18:23:28,515 INFO L277 CegarLoopForPetriNet]: 183 programPoint places, 4 predicate places. [2024-11-08 18:23:28,516 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 180 transitions, 398 flow [2024-11-08 18:23:28,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 144.5) internal successors, (867), 6 states have internal predecessors, (867), 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) [2024-11-08 18:23:28,517 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:23:28,517 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:23:28,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 18:23:28,518 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-08 18:23:28,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:23:28,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1234927441, now seen corresponding path program 1 times [2024-11-08 18:23:28,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:23:28,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499773477] [2024-11-08 18:23:28,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:23:28,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:23:28,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:23:28,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:23:28,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:23:28,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499773477] [2024-11-08 18:23:28,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499773477] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:23:28,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:23:28,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:23:28,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071917386] [2024-11-08 18:23:28,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:23:28,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:23:28,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:23:28,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:23:28,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:23:28,641 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 198 [2024-11-08 18:23:28,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 180 transitions, 398 flow. Second operand has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 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) [2024-11-08 18:23:28,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:23:28,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 198 [2024-11-08 18:23:28,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:23:31,143 INFO L124 PetriNetUnfolderBase]: 4067/14843 cut-off events. [2024-11-08 18:23:31,143 INFO L125 PetriNetUnfolderBase]: For 240/240 co-relation queries the response was YES. [2024-11-08 18:23:31,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21404 conditions, 14843 events. 4067/14843 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 164956 event pairs, 1408 based on Foata normal form. 0/13188 useless extension candidates. Maximal degree in co-relation 14811. Up to 3516 conditions per place. [2024-11-08 18:23:31,274 INFO L140 encePairwiseOnDemand]: 179/198 looper letters, 58 selfloop transitions, 14 changer transitions 0/213 dead transitions. [2024-11-08 18:23:31,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 213 transitions, 619 flow [2024-11-08 18:23:31,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:23:31,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:23:31,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 503 transitions. [2024-11-08 18:23:31,277 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8468013468013468 [2024-11-08 18:23:31,277 INFO L175 Difference]: Start difference. First operand has 187 places, 180 transitions, 398 flow. Second operand 3 states and 503 transitions. [2024-11-08 18:23:31,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 213 transitions, 619 flow [2024-11-08 18:23:31,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 213 transitions, 607 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-08 18:23:31,285 INFO L231 Difference]: Finished difference. Result has 186 places, 194 transitions, 508 flow [2024-11-08 18:23:31,286 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=508, PETRI_PLACES=186, PETRI_TRANSITIONS=194} [2024-11-08 18:23:31,288 INFO L277 CegarLoopForPetriNet]: 183 programPoint places, 3 predicate places. [2024-11-08 18:23:31,288 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 194 transitions, 508 flow [2024-11-08 18:23:31,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 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) [2024-11-08 18:23:31,289 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:23:31,290 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:23:31,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 18:23:31,290 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-08 18:23:31,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:23:31,291 INFO L85 PathProgramCache]: Analyzing trace with hash -446904748, now seen corresponding path program 1 times [2024-11-08 18:23:31,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:23:31,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883681566] [2024-11-08 18:23:31,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:23:31,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:23:31,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:23:31,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:23:31,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:23:31,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883681566] [2024-11-08 18:23:31,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883681566] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:23:31,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:23:31,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:23:31,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754195902] [2024-11-08 18:23:31,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:23:31,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:23:31,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:23:31,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:23:31,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:23:31,508 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 198 [2024-11-08 18:23:31,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 194 transitions, 508 flow. Second operand has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 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) [2024-11-08 18:23:31,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:23:31,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 198 [2024-11-08 18:23:31,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:23:33,739 INFO L124 PetriNetUnfolderBase]: 4227/16856 cut-off events. [2024-11-08 18:23:33,739 INFO L125 PetriNetUnfolderBase]: For 4320/4506 co-relation queries the response was YES. [2024-11-08 18:23:33,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27625 conditions, 16856 events. 4227/16856 cut-off events. For 4320/4506 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 196675 event pairs, 2525 based on Foata normal form. 57/15220 useless extension candidates. Maximal degree in co-relation 26312. Up to 5542 conditions per place. [2024-11-08 18:23:33,869 INFO L140 encePairwiseOnDemand]: 189/198 looper letters, 52 selfloop transitions, 14 changer transitions 0/218 dead transitions. [2024-11-08 18:23:33,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 218 transitions, 726 flow [2024-11-08 18:23:33,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:23:33,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:23:33,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 497 transitions. [2024-11-08 18:23:33,872 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8367003367003367 [2024-11-08 18:23:33,872 INFO L175 Difference]: Start difference. First operand has 186 places, 194 transitions, 508 flow. Second operand 3 states and 497 transitions. [2024-11-08 18:23:33,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 218 transitions, 726 flow [2024-11-08 18:23:33,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 218 transitions, 688 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 18:23:33,888 INFO L231 Difference]: Finished difference. Result has 188 places, 206 transitions, 606 flow [2024-11-08 18:23:33,889 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=606, PETRI_PLACES=188, PETRI_TRANSITIONS=206} [2024-11-08 18:23:33,889 INFO L277 CegarLoopForPetriNet]: 183 programPoint places, 5 predicate places. [2024-11-08 18:23:33,890 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 206 transitions, 606 flow [2024-11-08 18:23:33,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 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) [2024-11-08 18:23:33,890 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:23:33,890 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:23:33,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 18:23:33,891 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-08 18:23:33,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:23:33,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1639809011, now seen corresponding path program 1 times [2024-11-08 18:23:33,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:23:33,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530332138] [2024-11-08 18:23:33,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:23:33,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:23:33,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:23:34,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:23:34,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:23:34,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530332138] [2024-11-08 18:23:34,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530332138] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:23:34,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969424373] [2024-11-08 18:23:34,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:23:34,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:23:34,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9358e63d-4b66-472f-8fb8-3017d19ea111/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:23:34,012 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9358e63d-4b66-472f-8fb8-3017d19ea111/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:23:34,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9358e63d-4b66-472f-8fb8-3017d19ea111/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 18:23:34,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:23:34,138 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 18:23:34,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:23:34,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:23:34,241 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:23:34,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:23:34,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969424373] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:23:34,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:23:34,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-08 18:23:34,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336524026] [2024-11-08 18:23:34,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:23:34,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 18:23:34,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:23:34,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 18:23:34,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-08 18:23:34,441 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 198 [2024-11-08 18:23:34,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 206 transitions, 606 flow. Second operand has 10 states, 10 states have (on average 152.8) internal successors, (1528), 10 states have internal predecessors, (1528), 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) [2024-11-08 18:23:34,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:23:34,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 198 [2024-11-08 18:23:34,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:23:35,286 INFO L124 PetriNetUnfolderBase]: 902/3795 cut-off events. [2024-11-08 18:23:35,287 INFO L125 PetriNetUnfolderBase]: For 479/513 co-relation queries the response was YES. [2024-11-08 18:23:35,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5996 conditions, 3795 events. 902/3795 cut-off events. For 479/513 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 34661 event pairs, 26 based on Foata normal form. 212/3737 useless extension candidates. Maximal degree in co-relation 2959. Up to 717 conditions per place. [2024-11-08 18:23:35,403 INFO L140 encePairwiseOnDemand]: 192/198 looper letters, 75 selfloop transitions, 7 changer transitions 0/212 dead transitions. [2024-11-08 18:23:35,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 212 transitions, 734 flow [2024-11-08 18:23:35,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 18:23:35,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-08 18:23:35,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1436 transitions. [2024-11-08 18:23:35,407 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8058361391694725 [2024-11-08 18:23:35,407 INFO L175 Difference]: Start difference. First operand has 188 places, 206 transitions, 606 flow. Second operand 9 states and 1436 transitions. [2024-11-08 18:23:35,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 212 transitions, 734 flow [2024-11-08 18:23:35,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 212 transitions, 714 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 18:23:35,412 INFO L231 Difference]: Finished difference. Result has 150 places, 154 transitions, 448 flow [2024-11-08 18:23:35,413 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=448, PETRI_PLACES=150, PETRI_TRANSITIONS=154} [2024-11-08 18:23:35,413 INFO L277 CegarLoopForPetriNet]: 183 programPoint places, -33 predicate places. [2024-11-08 18:23:35,414 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 154 transitions, 448 flow [2024-11-08 18:23:35,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 152.8) internal successors, (1528), 10 states have internal predecessors, (1528), 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) [2024-11-08 18:23:35,415 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:23:35,415 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:23:35,436 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9358e63d-4b66-472f-8fb8-3017d19ea111/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 18:23:35,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9358e63d-4b66-472f-8fb8-3017d19ea111/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:23:35,620 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-08 18:23:35,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:23:35,620 INFO L85 PathProgramCache]: Analyzing trace with hash -2047124190, now seen corresponding path program 1 times [2024-11-08 18:23:35,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:23:35,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311606752] [2024-11-08 18:23:35,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:23:35,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:23:35,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:23:35,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:23:35,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:23:35,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311606752] [2024-11-08 18:23:35,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311606752] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:23:35,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:23:35,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:23:35,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843250316] [2024-11-08 18:23:35,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:23:35,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:23:35,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:23:35,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:23:35,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:23:35,738 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 198 [2024-11-08 18:23:35,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 154 transitions, 448 flow. Second operand has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 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) [2024-11-08 18:23:35,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:23:35,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 198 [2024-11-08 18:23:35,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:23:35,953 INFO L124 PetriNetUnfolderBase]: 256/1243 cut-off events. [2024-11-08 18:23:35,953 INFO L125 PetriNetUnfolderBase]: For 547/578 co-relation queries the response was YES. [2024-11-08 18:23:35,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2307 conditions, 1243 events. 256/1243 cut-off events. For 547/578 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 8295 event pairs, 135 based on Foata normal form. 9/1172 useless extension candidates. Maximal degree in co-relation 2228. Up to 457 conditions per place. [2024-11-08 18:23:35,963 INFO L140 encePairwiseOnDemand]: 190/198 looper letters, 45 selfloop transitions, 10 changer transitions 0/169 dead transitions. [2024-11-08 18:23:35,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 169 transitions, 617 flow [2024-11-08 18:23:35,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:23:35,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:23:35,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 484 transitions. [2024-11-08 18:23:35,965 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8148148148148148 [2024-11-08 18:23:35,966 INFO L175 Difference]: Start difference. First operand has 150 places, 154 transitions, 448 flow. Second operand 3 states and 484 transitions. [2024-11-08 18:23:35,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 169 transitions, 617 flow [2024-11-08 18:23:35,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 169 transitions, 602 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-08 18:23:35,970 INFO L231 Difference]: Finished difference. Result has 149 places, 162 transitions, 531 flow [2024-11-08 18:23:35,971 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=531, PETRI_PLACES=149, PETRI_TRANSITIONS=162} [2024-11-08 18:23:35,971 INFO L277 CegarLoopForPetriNet]: 183 programPoint places, -34 predicate places. [2024-11-08 18:23:35,972 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 162 transitions, 531 flow [2024-11-08 18:23:35,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 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) [2024-11-08 18:23:35,972 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:23:35,973 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:23:35,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 18:23:35,973 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-08 18:23:35,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:23:35,973 INFO L85 PathProgramCache]: Analyzing trace with hash 2104258428, now seen corresponding path program 1 times [2024-11-08 18:23:35,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:23:35,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503448265] [2024-11-08 18:23:35,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:23:35,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:23:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:23:36,029 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 18:23:36,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:23:36,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503448265] [2024-11-08 18:23:36,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503448265] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:23:36,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:23:36,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:23:36,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115208489] [2024-11-08 18:23:36,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:23:36,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:23:36,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:23:36,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:23:36,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:23:36,075 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 198 [2024-11-08 18:23:36,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 162 transitions, 531 flow. Second operand has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 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) [2024-11-08 18:23:36,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:23:36,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 198 [2024-11-08 18:23:36,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:23:36,363 INFO L124 PetriNetUnfolderBase]: 292/1411 cut-off events. [2024-11-08 18:23:36,363 INFO L125 PetriNetUnfolderBase]: For 1030/1055 co-relation queries the response was YES. [2024-11-08 18:23:36,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2812 conditions, 1411 events. 292/1411 cut-off events. For 1030/1055 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 9589 event pairs, 139 based on Foata normal form. 6/1328 useless extension candidates. Maximal degree in co-relation 2736. Up to 498 conditions per place. [2024-11-08 18:23:36,375 INFO L140 encePairwiseOnDemand]: 190/198 looper letters, 46 selfloop transitions, 14 changer transitions 0/176 dead transitions. [2024-11-08 18:23:36,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 176 transitions, 703 flow [2024-11-08 18:23:36,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:23:36,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:23:36,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 483 transitions. [2024-11-08 18:23:36,378 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8131313131313131 [2024-11-08 18:23:36,378 INFO L175 Difference]: Start difference. First operand has 149 places, 162 transitions, 531 flow. Second operand 3 states and 483 transitions. [2024-11-08 18:23:36,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 176 transitions, 703 flow [2024-11-08 18:23:36,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 176 transitions, 667 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-08 18:23:36,385 INFO L231 Difference]: Finished difference. Result has 151 places, 170 transitions, 609 flow [2024-11-08 18:23:36,385 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=609, PETRI_PLACES=151, PETRI_TRANSITIONS=170} [2024-11-08 18:23:36,386 INFO L277 CegarLoopForPetriNet]: 183 programPoint places, -32 predicate places. [2024-11-08 18:23:36,386 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 170 transitions, 609 flow [2024-11-08 18:23:36,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 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) [2024-11-08 18:23:36,387 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:23:36,387 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:23:36,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 18:23:36,388 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-08 18:23:36,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:23:36,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1004369531, now seen corresponding path program 1 times [2024-11-08 18:23:36,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:23:36,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770306297] [2024-11-08 18:23:36,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:23:36,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:23:36,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 18:23:36,418 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 18:23:36,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 18:23:36,446 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 18:23:36,446 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 18:23:36,446 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2024-11-08 18:23:36,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2024-11-08 18:23:36,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2024-11-08 18:23:36,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 16 remaining) [2024-11-08 18:23:36,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2024-11-08 18:23:36,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 16 remaining) [2024-11-08 18:23:36,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 16 remaining) [2024-11-08 18:23:36,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2024-11-08 18:23:36,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2024-11-08 18:23:36,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2024-11-08 18:23:36,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2024-11-08 18:23:36,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2024-11-08 18:23:36,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2024-11-08 18:23:36,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2024-11-08 18:23:36,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2024-11-08 18:23:36,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2024-11-08 18:23:36,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 18:23:36,450 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:23:36,451 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-08 18:23:36,451 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-08 18:23:36,486 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-08 18:23:36,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 227 places, 247 transitions, 521 flow [2024-11-08 18:23:36,577 INFO L124 PetriNetUnfolderBase]: 54/535 cut-off events. [2024-11-08 18:23:36,578 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-08 18:23:36,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 560 conditions, 535 events. 54/535 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1991 event pairs, 1 based on Foata normal form. 0/449 useless extension candidates. Maximal degree in co-relation 357. Up to 16 conditions per place. [2024-11-08 18:23:36,583 INFO L82 GeneralOperation]: Start removeDead. Operand has 227 places, 247 transitions, 521 flow [2024-11-08 18:23:36,588 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 227 places, 247 transitions, 521 flow [2024-11-08 18:23:36,590 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:23:36,590 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@e9ac91a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:23:36,591 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-08 18:23:36,595 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 18:23:36,595 INFO L124 PetriNetUnfolderBase]: 1/51 cut-off events. [2024-11-08 18:23:36,595 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 18:23:36,595 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:23:36,596 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:23:36,596 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-11-08 18:23:36,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:23:36,597 INFO L85 PathProgramCache]: Analyzing trace with hash 555641812, now seen corresponding path program 1 times [2024-11-08 18:23:36,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:23:36,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060263830] [2024-11-08 18:23:36,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:23:36,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:23:36,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:23:36,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:23:36,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:23:36,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060263830] [2024-11-08 18:23:36,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060263830] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:23:36,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:23:36,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:23:36,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623175485] [2024-11-08 18:23:36,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:23:36,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:23:36,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:23:36,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:23:36,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:23:36,672 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 247 [2024-11-08 18:23:36,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 247 transitions, 521 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) [2024-11-08 18:23:36,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:23:36,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 247 [2024-11-08 18:23:36,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:23:42,034 INFO L124 PetriNetUnfolderBase]: 9421/35903 cut-off events. [2024-11-08 18:23:42,034 INFO L125 PetriNetUnfolderBase]: For 937/937 co-relation queries the response was YES. [2024-11-08 18:23:42,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49540 conditions, 35903 events. 9421/35903 cut-off events. For 937/937 co-relation queries the response was YES. Maximal size of possible extension queue 769. Compared 458926 event pairs, 8324 based on Foata normal form. 7120/39566 useless extension candidates. Maximal degree in co-relation 36143. Up to 13201 conditions per place. [2024-11-08 18:23:42,310 INFO L140 encePairwiseOnDemand]: 221/247 looper letters, 40 selfloop transitions, 2 changer transitions 0/230 dead transitions. [2024-11-08 18:23:42,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 230 transitions, 571 flow [2024-11-08 18:23:42,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:23:42,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:23:42,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 639 transitions. [2024-11-08 18:23:42,314 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8623481781376519 [2024-11-08 18:23:42,314 INFO L175 Difference]: Start difference. First operand has 227 places, 247 transitions, 521 flow. Second operand 3 states and 639 transitions. [2024-11-08 18:23:42,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 230 transitions, 571 flow [2024-11-08 18:23:42,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 230 transitions, 571 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 18:23:42,320 INFO L231 Difference]: Finished difference. Result has 228 places, 224 transitions, 487 flow [2024-11-08 18:23:42,321 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=487, PETRI_PLACES=228, PETRI_TRANSITIONS=224} [2024-11-08 18:23:42,321 INFO L277 CegarLoopForPetriNet]: 227 programPoint places, 1 predicate places. [2024-11-08 18:23:42,322 INFO L471 AbstractCegarLoop]: Abstraction has has 228 places, 224 transitions, 487 flow [2024-11-08 18:23:42,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2024-11-08 18:23:42,322 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:23:42,322 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:23:42,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 18:23:42,323 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-11-08 18:23:42,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:23:42,323 INFO L85 PathProgramCache]: Analyzing trace with hash -762663111, now seen corresponding path program 1 times [2024-11-08 18:23:42,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:23:42,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812537910] [2024-11-08 18:23:42,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:23:42,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:23:42,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:23:42,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:23:42,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:23:42,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812537910] [2024-11-08 18:23:42,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812537910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:23:42,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:23:42,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 18:23:42,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114804531] [2024-11-08 18:23:42,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:23:42,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:23:42,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:23:42,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:23:42,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:23:42,912 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 247 [2024-11-08 18:23:42,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 224 transitions, 487 flow. Second operand has 6 states, 6 states have (on average 179.5) internal successors, (1077), 6 states have internal predecessors, (1077), 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) [2024-11-08 18:23:42,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:23:42,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 247 [2024-11-08 18:23:42,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:23:53,100 INFO L124 PetriNetUnfolderBase]: 19862/66312 cut-off events. [2024-11-08 18:23:53,100 INFO L125 PetriNetUnfolderBase]: For 1505/1505 co-relation queries the response was YES. [2024-11-08 18:23:53,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95331 conditions, 66312 events. 19862/66312 cut-off events. For 1505/1505 co-relation queries the response was YES. Maximal size of possible extension queue 1374. Compared 895165 event pairs, 7382 based on Foata normal form. 0/60485 useless extension candidates. Maximal degree in co-relation 82036. Up to 20118 conditions per place. [2024-11-08 18:23:53,491 INFO L140 encePairwiseOnDemand]: 241/247 looper letters, 112 selfloop transitions, 6 changer transitions 0/295 dead transitions. [2024-11-08 18:23:53,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 295 transitions, 865 flow [2024-11-08 18:23:53,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:23:53,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 18:23:53,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1186 transitions. [2024-11-08 18:23:53,494 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8002699055330634 [2024-11-08 18:23:53,495 INFO L175 Difference]: Start difference. First operand has 228 places, 224 transitions, 487 flow. Second operand 6 states and 1186 transitions. [2024-11-08 18:23:53,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 295 transitions, 865 flow [2024-11-08 18:23:53,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 295 transitions, 863 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 18:23:53,503 INFO L231 Difference]: Finished difference. Result has 231 places, 223 transitions, 495 flow [2024-11-08 18:23:53,503 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=495, PETRI_PLACES=231, PETRI_TRANSITIONS=223} [2024-11-08 18:23:53,504 INFO L277 CegarLoopForPetriNet]: 227 programPoint places, 4 predicate places. [2024-11-08 18:23:53,504 INFO L471 AbstractCegarLoop]: Abstraction has has 231 places, 223 transitions, 495 flow [2024-11-08 18:23:53,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 179.5) internal successors, (1077), 6 states have internal predecessors, (1077), 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) [2024-11-08 18:23:53,505 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:23:53,505 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:23:53,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 18:23:53,506 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-11-08 18:23:53,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:23:53,506 INFO L85 PathProgramCache]: Analyzing trace with hash 710179392, now seen corresponding path program 1 times [2024-11-08 18:23:53,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:23:53,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443076067] [2024-11-08 18:23:53,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:23:53,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:23:53,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:23:53,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:23:53,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:23:53,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443076067] [2024-11-08 18:23:53,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443076067] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:23:53,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:23:53,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:23:53,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53868819] [2024-11-08 18:23:53,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:23:53,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:23:53,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:23:53,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:23:53,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:23:53,600 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 247 [2024-11-08 18:23:53,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 223 transitions, 495 flow. Second operand has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 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) [2024-11-08 18:23:53,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:23:53,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 247 [2024-11-08 18:23:53,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand