./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6efa0097353392a416215c2535cfc6cdc34364d9b0eb2844e37da9edef467642 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 12:25:12,053 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 12:25:12,116 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 12:25:12,127 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 12:25:12,127 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 12:25:12,175 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 12:25:12,176 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 12:25:12,177 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 12:25:12,177 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 12:25:12,178 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 12:25:12,179 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 12:25:12,179 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 12:25:12,180 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 12:25:12,180 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 12:25:12,181 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 12:25:12,181 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 12:25:12,181 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 12:25:12,182 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 12:25:12,182 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 12:25:12,182 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 12:25:12,183 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 12:25:12,187 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 12:25:12,188 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 12:25:12,188 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 12:25:12,188 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 12:25:12,188 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 12:25:12,189 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 12:25:12,189 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 12:25:12,189 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 12:25:12,189 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 12:25:12,190 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 12:25:12,190 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 12:25:12,190 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:25:12,190 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 12:25:12,191 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 12:25:12,191 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 12:25:12,191 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 12:25:12,191 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 12:25:12,191 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 12:25:12,192 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 12:25:12,192 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 12:25:12,192 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 12:25:12,193 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6efa0097353392a416215c2535cfc6cdc34364d9b0eb2844e37da9edef467642 [2024-10-24 12:25:12,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 12:25:12,496 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 12:25:12,501 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 12:25:12,502 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 12:25:12,503 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 12:25:12,504 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2024-10-24 12:25:14,054 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 12:25:14,380 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 12:25:14,381 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2024-10-24 12:25:14,405 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48a958864/9696a61f1a084e0294dc42510458c998/FLAG1e439adc2 [2024-10-24 12:25:14,418 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48a958864/9696a61f1a084e0294dc42510458c998 [2024-10-24 12:25:14,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 12:25:14,422 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 12:25:14,423 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 12:25:14,423 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 12:25:14,428 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 12:25:14,428 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:25:14" (1/1) ... [2024-10-24 12:25:14,429 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@373a4a1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:14, skipping insertion in model container [2024-10-24 12:25:14,430 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:25:14" (1/1) ... [2024-10-24 12:25:14,490 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 12:25:14,935 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i[47038,47051] [2024-10-24 12:25:14,952 WARN L1660 CHandler]: Possible shadowing of function new [2024-10-24 12:25:14,954 WARN L1660 CHandler]: Possible shadowing of function new [2024-10-24 12:25:14,954 WARN L1660 CHandler]: Possible shadowing of function new [2024-10-24 12:25:14,956 WARN L1660 CHandler]: Possible shadowing of function new [2024-10-24 12:25:14,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:25:15,015 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 12:25:15,053 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i[47038,47051] [2024-10-24 12:25:15,059 WARN L1660 CHandler]: Possible shadowing of function new [2024-10-24 12:25:15,062 WARN L1660 CHandler]: Possible shadowing of function new [2024-10-24 12:25:15,063 WARN L1660 CHandler]: Possible shadowing of function new [2024-10-24 12:25:15,063 WARN L1660 CHandler]: Possible shadowing of function new [2024-10-24 12:25:15,084 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:25:15,154 INFO L204 MainTranslator]: Completed translation [2024-10-24 12:25:15,155 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:15 WrapperNode [2024-10-24 12:25:15,155 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 12:25:15,156 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 12:25:15,157 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 12:25:15,157 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 12:25:15,165 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:15" (1/1) ... [2024-10-24 12:25:15,189 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:15" (1/1) ... [2024-10-24 12:25:15,226 INFO L138 Inliner]: procedures = 279, calls = 55, calls flagged for inlining = 11, calls inlined = 12, statements flattened = 236 [2024-10-24 12:25:15,226 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 12:25:15,227 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 12:25:15,227 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 12:25:15,227 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 12:25:15,238 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:15" (1/1) ... [2024-10-24 12:25:15,238 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:15" (1/1) ... [2024-10-24 12:25:15,244 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:15" (1/1) ... [2024-10-24 12:25:15,278 INFO L175 MemorySlicer]: Split 32 memory accesses to 4 slices as follows [2, 2, 23, 5]. 72 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 0, 5]. The 15 writes are split as follows [0, 1, 14, 0]. [2024-10-24 12:25:15,279 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:15" (1/1) ... [2024-10-24 12:25:15,279 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:15" (1/1) ... [2024-10-24 12:25:15,295 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:15" (1/1) ... [2024-10-24 12:25:15,300 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:15" (1/1) ... [2024-10-24 12:25:15,304 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:15" (1/1) ... [2024-10-24 12:25:15,306 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:15" (1/1) ... [2024-10-24 12:25:15,311 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 12:25:15,316 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 12:25:15,316 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 12:25:15,316 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 12:25:15,318 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:15" (1/1) ... [2024-10-24 12:25:15,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:25:15,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:25:15,368 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 12:25:15,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 12:25:15,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 12:25:15,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-24 12:25:15,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-24 12:25:15,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-24 12:25:15,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-10-24 12:25:15,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 12:25:15,430 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-24 12:25:15,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 12:25:15,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 12:25:15,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 12:25:15,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-24 12:25:15,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 12:25:15,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 12:25:15,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 12:25:15,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-24 12:25:15,433 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-24 12:25:15,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 12:25:15,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 12:25:15,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-24 12:25:15,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-24 12:25:15,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-24 12:25:15,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-10-24 12:25:15,436 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-24 12:25:15,437 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-24 12:25:15,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 12:25:15,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 12:25:15,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 12:25:15,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-24 12:25:15,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 12:25:15,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 12:25:15,440 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 12:25:15,661 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 12:25:15,664 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 12:25:16,121 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 12:25:16,121 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 12:25:16,505 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 12:25:16,505 INFO L314 CfgBuilder]: Removed 16 assume(true) statements. [2024-10-24 12:25:16,506 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:25:16 BoogieIcfgContainer [2024-10-24 12:25:16,507 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 12:25:16,509 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 12:25:16,510 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 12:25:16,514 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 12:25:16,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:25:14" (1/3) ... [2024-10-24 12:25:16,515 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b94df40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:25:16, skipping insertion in model container [2024-10-24 12:25:16,516 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:15" (2/3) ... [2024-10-24 12:25:16,516 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b94df40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:25:16, skipping insertion in model container [2024-10-24 12:25:16,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:25:16" (3/3) ... [2024-10-24 12:25:16,518 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_92-evilcollapse_racing.i [2024-10-24 12:25:16,536 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 12:25:16,537 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 12:25:16,537 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 12:25:16,592 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-24 12:25:16,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 60 transitions, 127 flow [2024-10-24 12:25:16,669 INFO L124 PetriNetUnfolderBase]: 17/64 cut-off events. [2024-10-24 12:25:16,669 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-24 12:25:16,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 64 events. 17/64 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 118 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 51. Up to 4 conditions per place. [2024-10-24 12:25:16,672 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 60 transitions, 127 flow [2024-10-24 12:25:16,675 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 58 transitions, 120 flow [2024-10-24 12:25:16,684 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:25:16,694 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;@5e1c3f70, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:25:16,695 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-10-24 12:25:16,706 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 12:25:16,707 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2024-10-24 12:25:16,707 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 12:25:16,707 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:25:16,708 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-10-24 12:25:16,709 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:25:16,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:25:16,715 INFO L85 PathProgramCache]: Analyzing trace with hash -2139306466, now seen corresponding path program 1 times [2024-10-24 12:25:16,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:25:16,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068752411] [2024-10-24 12:25:16,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:25:16,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:25:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:25:17,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:25:17,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:25:17,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068752411] [2024-10-24 12:25:17,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068752411] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:25:17,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:25:17,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 12:25:17,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228949752] [2024-10-24 12:25:17,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:25:17,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 12:25:17,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:25:17,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 12:25:17,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 12:25:17,145 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-10-24 12:25:17,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 58 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2024-10-24 12:25:17,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:25:17,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-10-24 12:25:17,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:25:17,534 INFO L124 PetriNetUnfolderBase]: 116/324 cut-off events. [2024-10-24 12:25:17,535 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 12:25:17,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 568 conditions, 324 events. 116/324 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1291 event pairs, 95 based on Foata normal form. 42/309 useless extension candidates. Maximal degree in co-relation 536. Up to 237 conditions per place. [2024-10-24 12:25:17,541 INFO L140 encePairwiseOnDemand]: 46/60 looper letters, 33 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2024-10-24 12:25:17,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 50 transitions, 174 flow [2024-10-24 12:25:17,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 12:25:17,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 12:25:17,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2024-10-24 12:25:17,556 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-10-24 12:25:17,559 INFO L175 Difference]: Start difference. First operand has 45 places, 58 transitions, 120 flow. Second operand 3 states and 92 transitions. [2024-10-24 12:25:17,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 50 transitions, 174 flow [2024-10-24 12:25:17,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 50 transitions, 174 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 12:25:17,567 INFO L231 Difference]: Finished difference. Result has 48 places, 48 transitions, 110 flow [2024-10-24 12:25:17,571 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=48, PETRI_TRANSITIONS=48} [2024-10-24 12:25:17,576 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 3 predicate places. [2024-10-24 12:25:17,578 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 48 transitions, 110 flow [2024-10-24 12:25:17,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2024-10-24 12:25:17,579 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:25:17,579 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:25:17,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 12:25:17,580 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:25:17,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:25:17,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1234325707, now seen corresponding path program 1 times [2024-10-24 12:25:17,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:25:17,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724093947] [2024-10-24 12:25:17,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:25:17,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:25:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:25:17,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:25:17,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:25:17,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724093947] [2024-10-24 12:25:17,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724093947] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:25:17,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:25:17,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 12:25:17,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605252283] [2024-10-24 12:25:17,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:25:17,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 12:25:17,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:25:17,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 12:25:17,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 12:25:17,726 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-10-24 12:25:17,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-10-24 12:25:17,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:25:17,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-10-24 12:25:17,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:25:17,885 INFO L124 PetriNetUnfolderBase]: 116/326 cut-off events. [2024-10-24 12:25:17,885 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 12:25:17,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 579 conditions, 326 events. 116/326 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1294 event pairs, 95 based on Foata normal form. 2/274 useless extension candidates. Maximal degree in co-relation 561. Up to 240 conditions per place. [2024-10-24 12:25:17,888 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 32 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2024-10-24 12:25:17,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 49 transitions, 180 flow [2024-10-24 12:25:17,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 12:25:17,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 12:25:17,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-10-24 12:25:17,891 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4388888888888889 [2024-10-24 12:25:17,891 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 110 flow. Second operand 3 states and 79 transitions. [2024-10-24 12:25:17,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 49 transitions, 180 flow [2024-10-24 12:25:17,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 49 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 12:25:17,894 INFO L231 Difference]: Finished difference. Result has 50 places, 49 transitions, 122 flow [2024-10-24 12:25:17,894 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=50, PETRI_TRANSITIONS=49} [2024-10-24 12:25:17,895 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 5 predicate places. [2024-10-24 12:25:17,895 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 49 transitions, 122 flow [2024-10-24 12:25:17,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-10-24 12:25:17,895 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:25:17,896 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:25:17,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 12:25:17,896 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:25:17,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:25:17,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1965924893, now seen corresponding path program 1 times [2024-10-24 12:25:17,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:25:17,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472292398] [2024-10-24 12:25:17,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:25:17,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:25:17,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:25:18,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:25:18,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:25:18,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472292398] [2024-10-24 12:25:18,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472292398] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:25:18,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70873150] [2024-10-24 12:25:18,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:25:18,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:25:18,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:25:18,045 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:25:18,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 12:25:18,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:25:18,244 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 12:25:18,254 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:25:18,309 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:25:18,309 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:25:18,352 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:25:18,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70873150] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:25:18,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:25:18,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-24 12:25:18,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671656118] [2024-10-24 12:25:18,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:25:18,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 12:25:18,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:25:18,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 12:25:18,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-24 12:25:18,360 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-10-24 12:25:18,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 49 transitions, 122 flow. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 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) [2024-10-24 12:25:18,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:25:18,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-10-24 12:25:18,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:25:18,834 INFO L124 PetriNetUnfolderBase]: 116/332 cut-off events. [2024-10-24 12:25:18,834 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-24 12:25:18,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 332 events. 116/332 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1309 event pairs, 95 based on Foata normal form. 6/284 useless extension candidates. Maximal degree in co-relation 568. Up to 240 conditions per place. [2024-10-24 12:25:18,838 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 32 selfloop transitions, 5 changer transitions 0/52 dead transitions. [2024-10-24 12:25:18,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 52 transitions, 208 flow [2024-10-24 12:25:18,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:25:18,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 12:25:18,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2024-10-24 12:25:18,842 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-10-24 12:25:18,842 INFO L175 Difference]: Start difference. First operand has 50 places, 49 transitions, 122 flow. Second operand 6 states and 129 transitions. [2024-10-24 12:25:18,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 52 transitions, 208 flow [2024-10-24 12:25:18,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 52 transitions, 204 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-24 12:25:18,845 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 160 flow [2024-10-24 12:25:18,845 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=160, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-10-24 12:25:18,846 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 12 predicate places. [2024-10-24 12:25:18,846 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 160 flow [2024-10-24 12:25:18,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 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) [2024-10-24 12:25:18,847 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:25:18,847 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:25:18,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-24 12:25:19,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:25:19,049 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:25:19,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:25:19,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1615276341, now seen corresponding path program 2 times [2024-10-24 12:25:19,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:25:19,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454259469] [2024-10-24 12:25:19,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:25:19,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:25:19,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:25:19,371 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-24 12:25:19,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:25:19,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454259469] [2024-10-24 12:25:19,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454259469] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:25:19,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888861139] [2024-10-24 12:25:19,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 12:25:19,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:25:19,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:25:19,376 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:25:19,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 12:25:19,659 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 12:25:19,660 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:25:19,665 INFO L255 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 12:25:19,697 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:25:19,749 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:25:19,750 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:25:19,834 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:25:19,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888861139] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:25:19,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:25:19,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 14 [2024-10-24 12:25:19,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033182275] [2024-10-24 12:25:19,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:25:19,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 12:25:19,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:25:19,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 12:25:19,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-10-24 12:25:19,841 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-10-24 12:25:19,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 160 flow. Second operand has 14 states, 14 states have (on average 16.571428571428573) internal successors, (232), 14 states have internal predecessors, (232), 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) [2024-10-24 12:25:19,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:25:19,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-10-24 12:25:19,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:25:20,884 INFO L124 PetriNetUnfolderBase]: 117/357 cut-off events. [2024-10-24 12:25:20,885 INFO L125 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2024-10-24 12:25:20,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 735 conditions, 357 events. 117/357 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1362 event pairs, 95 based on Foata normal form. 19/322 useless extension candidates. Maximal degree in co-relation 564. Up to 237 conditions per place. [2024-10-24 12:25:20,889 INFO L140 encePairwiseOnDemand]: 55/60 looper letters, 32 selfloop transitions, 36 changer transitions 0/83 dead transitions. [2024-10-24 12:25:20,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 83 transitions, 496 flow [2024-10-24 12:25:20,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-10-24 12:25:20,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-10-24 12:25:20,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 597 transitions. [2024-10-24 12:25:20,899 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2926470588235294 [2024-10-24 12:25:20,900 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 160 flow. Second operand 34 states and 597 transitions. [2024-10-24 12:25:20,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 83 transitions, 496 flow [2024-10-24 12:25:20,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 83 transitions, 454 flow, removed 18 selfloop flow, removed 1 redundant places. [2024-10-24 12:25:20,906 INFO L231 Difference]: Finished difference. Result has 102 places, 83 transitions, 452 flow [2024-10-24 12:25:20,908 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=452, PETRI_PLACES=102, PETRI_TRANSITIONS=83} [2024-10-24 12:25:20,910 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 57 predicate places. [2024-10-24 12:25:20,910 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 83 transitions, 452 flow [2024-10-24 12:25:20,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.571428571428573) internal successors, (232), 14 states have internal predecessors, (232), 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) [2024-10-24 12:25:20,912 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:25:20,912 INFO L204 CegarLoopForPetriNet]: trace histogram [20, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-24 12:25:20,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-24 12:25:21,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-10-24 12:25:21,113 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:25:21,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:25:21,114 INFO L85 PathProgramCache]: Analyzing trace with hash 926359032, now seen corresponding path program 3 times [2024-10-24 12:25:21,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:25:21,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317017138] [2024-10-24 12:25:21,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:25:21,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:25:21,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:25:22,707 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 123 proven. 55 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-10-24 12:25:22,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:25:22,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317017138] [2024-10-24 12:25:22,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317017138] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:25:22,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271695812] [2024-10-24 12:25:22,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 12:25:22,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:25:22,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:25:22,713 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:25:22,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process