./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_86-lists_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 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_86-lists_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 4e7050d36e2131966739d0040816e49ede1f1e8b3b668f65d41876950193b1d8 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 14:31:43,760 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 14:31:43,818 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 14:31:43,825 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 14:31:43,826 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 14:31:43,857 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 14:31:43,857 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 14:31:43,857 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 14:31:43,858 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 14:31:43,860 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 14:31:43,860 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 14:31:43,860 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 14:31:43,861 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 14:31:43,861 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 14:31:43,861 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 14:31:43,861 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 14:31:43,862 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 14:31:43,862 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 14:31:43,862 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 14:31:43,862 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 14:31:43,863 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 14:31:43,866 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 14:31:43,866 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 14:31:43,867 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 14:31:43,867 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 14:31:43,867 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 14:31:43,867 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 14:31:43,867 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 14:31:43,868 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 14:31:43,868 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 14:31:43,868 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 14:31:43,868 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 14:31:43,868 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:31:43,869 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 14:31:43,869 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 14:31:43,872 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 14:31:43,873 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 14:31:43,873 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 14:31:43,873 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 14:31:43,873 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 14:31:43,873 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 14:31:43,876 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 14:31:43,876 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e7050d36e2131966739d0040816e49ede1f1e8b3b668f65d41876950193b1d8 [2024-10-14 14:31:44,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 14:31:44,167 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 14:31:44,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 14:31:44,171 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 14:31:44,171 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 14:31:44,172 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i [2024-10-14 14:31:45,555 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 14:31:45,750 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 14:31:45,751 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i [2024-10-14 14:31:45,762 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5870c2cf/aae4e17a8d0944708ad5a0ce3ace8dac/FLAGe3a9926b6 [2024-10-14 14:31:45,773 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5870c2cf/aae4e17a8d0944708ad5a0ce3ace8dac [2024-10-14 14:31:45,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 14:31:45,777 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 14:31:45,778 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 14:31:45,778 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 14:31:45,782 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 14:31:45,783 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:31:45" (1/1) ... [2024-10-14 14:31:45,783 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2565f91d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:31:45, skipping insertion in model container [2024-10-14 14:31:45,783 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:31:45" (1/1) ... [2024-10-14 14:31:45,830 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 14:31:46,211 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_86-lists_racing.i[47038,47051] [2024-10-14 14:31:46,237 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:31:46,285 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 14:31:46,323 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_86-lists_racing.i[47038,47051] [2024-10-14 14:31:46,334 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:31:46,376 INFO L204 MainTranslator]: Completed translation [2024-10-14 14:31:46,376 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:31:46 WrapperNode [2024-10-14 14:31:46,376 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 14:31:46,377 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 14:31:46,378 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 14:31:46,378 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 14:31:46,384 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:31:46" (1/1) ... [2024-10-14 14:31:46,398 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:31:46" (1/1) ... [2024-10-14 14:31:46,430 INFO L138 Inliner]: procedures = 279, calls = 69, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 260 [2024-10-14 14:31:46,431 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 14:31:46,431 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 14:31:46,432 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 14:31:46,432 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 14:31:46,443 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:31:46" (1/1) ... [2024-10-14 14:31:46,443 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:31:46" (1/1) ... [2024-10-14 14:31:46,449 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:31:46" (1/1) ... [2024-10-14 14:31:46,467 INFO L175 MemorySlicer]: Split 35 memory accesses to 8 slices as follows [2, 5, 4, 5, 1, 14, 2, 2]. 40 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 0, 5, 0, 0, 0, 0]. The 13 writes are split as follows [0, 0, 2, 0, 1, 8, 1, 1]. [2024-10-14 14:31:46,468 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:31:46" (1/1) ... [2024-10-14 14:31:46,468 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:31:46" (1/1) ... [2024-10-14 14:31:46,477 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:31:46" (1/1) ... [2024-10-14 14:31:46,481 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:31:46" (1/1) ... [2024-10-14 14:31:46,486 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:31:46" (1/1) ... [2024-10-14 14:31:46,488 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:31:46" (1/1) ... [2024-10-14 14:31:46,492 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 14:31:46,493 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 14:31:46,493 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 14:31:46,493 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 14:31:46,497 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:31:46" (1/1) ... [2024-10-14 14:31:46,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:31:46,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:31:46,526 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) [2024-10-14 14:31:46,528 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 [2024-10-14 14:31:46,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 14:31:46,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-14 14:31:46,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-14 14:31:46,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-14 14:31:46,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-10-14 14:31:46,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-10-14 14:31:46,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-10-14 14:31:46,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-10-14 14:31:46,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-10-14 14:31:46,562 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2024-10-14 14:31:46,562 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2024-10-14 14:31:46,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 14:31:46,562 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-14 14:31:46,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 14:31:46,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 14:31:46,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-14 14:31:46,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-14 14:31:46,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-14 14:31:46,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-10-14 14:31:46,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-10-14 14:31:46,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-10-14 14:31:46,563 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-10-14 14:31:46,563 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-10-14 14:31:46,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 14:31:46,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 14:31:46,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-14 14:31:46,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-14 14:31:46,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-14 14:31:46,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-10-14 14:31:46,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-10-14 14:31:46,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-10-14 14:31:46,564 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-14 14:31:46,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-14 14:31:46,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 14:31:46,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-14 14:31:46,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-14 14:31:46,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-14 14:31:46,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-10-14 14:31:46,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-10-14 14:31:46,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-10-14 14:31:46,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-10-14 14:31:46,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-10-14 14:31:46,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 14:31:46,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 14:31:46,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-14 14:31:46,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-14 14:31:46,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-14 14:31:46,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-14 14:31:46,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-14 14:31:46,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-14 14:31:46,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 14:31:46,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 14:31:46,568 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 14:31:46,710 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 14:31:46,712 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 14:31:47,002 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 14:31:47,002 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 14:31:47,270 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 14:31:47,271 INFO L314 CfgBuilder]: Removed 16 assume(true) statements. [2024-10-14 14:31:47,272 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:31:47 BoogieIcfgContainer [2024-10-14 14:31:47,273 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 14:31:47,275 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 14:31:47,275 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 14:31:47,279 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 14:31:47,279 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:31:45" (1/3) ... [2024-10-14 14:31:47,280 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c625050 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:31:47, skipping insertion in model container [2024-10-14 14:31:47,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:31:46" (2/3) ... [2024-10-14 14:31:47,280 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c625050 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:31:47, skipping insertion in model container [2024-10-14 14:31:47,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:31:47" (3/3) ... [2024-10-14 14:31:47,281 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_86-lists_racing.i [2024-10-14 14:31:47,298 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 14:31:47,299 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 14:31:47,299 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 14:31:47,365 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-14 14:31:47,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 77 transitions, 174 flow [2024-10-14 14:31:47,455 INFO L124 PetriNetUnfolderBase]: 37/157 cut-off events. [2024-10-14 14:31:47,455 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-10-14 14:31:47,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 157 events. 37/157 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 560 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 80. Up to 8 conditions per place. [2024-10-14 14:31:47,459 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 77 transitions, 174 flow [2024-10-14 14:31:47,464 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 75 transitions, 164 flow [2024-10-14 14:31:47,474 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 14:31:47,480 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;@48ada32f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 14:31:47,483 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-14 14:31:47,493 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 14:31:47,493 INFO L124 PetriNetUnfolderBase]: 1/20 cut-off events. [2024-10-14 14:31:47,493 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 14:31:47,494 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:31:47,495 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-10-14 14:31:47,495 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:31:47,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:31:47,500 INFO L85 PathProgramCache]: Analyzing trace with hash -603403961, now seen corresponding path program 1 times [2024-10-14 14:31:47,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:31:47,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760426715] [2024-10-14 14:31:47,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:31:47,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:31:47,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:31:47,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 14:31:47,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:31:47,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760426715] [2024-10-14 14:31:47,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760426715] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:31:47,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:31:47,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 14:31:47,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871511456] [2024-10-14 14:31:47,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:31:47,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 14:31:47,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:31:48,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 14:31:48,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 14:31:48,046 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 77 [2024-10-14 14:31:48,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 75 transitions, 164 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) [2024-10-14 14:31:48,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:31:48,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 77 [2024-10-14 14:31:48,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:31:48,860 INFO L124 PetriNetUnfolderBase]: 2345/4509 cut-off events. [2024-10-14 14:31:48,861 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2024-10-14 14:31:48,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8331 conditions, 4509 events. 2345/4509 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 27466 event pairs, 2178 based on Foata normal form. 406/4207 useless extension candidates. Maximal degree in co-relation 7099. Up to 3752 conditions per place. [2024-10-14 14:31:48,883 INFO L140 encePairwiseOnDemand]: 62/77 looper letters, 47 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2024-10-14 14:31:48,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 64 transitions, 240 flow [2024-10-14 14:31:48,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 14:31:48,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 14:31:48,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2024-10-14 14:31:48,892 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46320346320346323 [2024-10-14 14:31:48,893 INFO L175 Difference]: Start difference. First operand has 63 places, 75 transitions, 164 flow. Second operand 3 states and 107 transitions. [2024-10-14 14:31:48,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 64 transitions, 240 flow [2024-10-14 14:31:48,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 64 transitions, 240 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 14:31:48,899 INFO L231 Difference]: Finished difference. Result has 66 places, 64 transitions, 152 flow [2024-10-14 14:31:48,901 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=66, PETRI_TRANSITIONS=64} [2024-10-14 14:31:48,905 INFO L277 CegarLoopForPetriNet]: 63 programPoint places, 3 predicate places. [2024-10-14 14:31:48,906 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 64 transitions, 152 flow [2024-10-14 14:31:48,906 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) [2024-10-14 14:31:48,906 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:31:48,906 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-10-14 14:31:48,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 14:31:48,907 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:31:48,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:31:48,907 INFO L85 PathProgramCache]: Analyzing trace with hash 2048684355, now seen corresponding path program 1 times [2024-10-14 14:31:48,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:31:48,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909672031] [2024-10-14 14:31:48,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:31:48,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:31:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:31:49,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 14:31:49,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:31:49,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909672031] [2024-10-14 14:31:49,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909672031] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:31:49,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086982483] [2024-10-14 14:31:49,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:31:49,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:31:49,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:31:49,008 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) [2024-10-14 14:31:49,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 14:31:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:31:49,147 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 14:31:49,150 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:31:49,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 14:31:49,210 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:31:49,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 14:31:49,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086982483] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:31:49,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:31:49,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-14 14:31:49,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62529370] [2024-10-14 14:31:49,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:31:49,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 14:31:49,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:31:49,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 14:31:49,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-14 14:31:49,249 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 77 [2024-10-14 14:31:49,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 64 transitions, 152 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 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) [2024-10-14 14:31:49,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:31:49,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 77 [2024-10-14 14:31:49,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:31:49,947 INFO L124 PetriNetUnfolderBase]: 2345/4512 cut-off events. [2024-10-14 14:31:49,948 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2024-10-14 14:31:49,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8347 conditions, 4512 events. 2345/4512 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 27467 event pairs, 2178 based on Foata normal form. 0/3804 useless extension candidates. Maximal degree in co-relation 8334. Up to 3752 conditions per place. [2024-10-14 14:31:49,976 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 47 selfloop transitions, 5 changer transitions 0/67 dead transitions. [2024-10-14 14:31:49,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 67 transitions, 268 flow [2024-10-14 14:31:49,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 14:31:49,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 14:31:49,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-10-14 14:31:49,980 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31385281385281383 [2024-10-14 14:31:49,980 INFO L175 Difference]: Start difference. First operand has 66 places, 64 transitions, 152 flow. Second operand 6 states and 145 transitions. [2024-10-14 14:31:49,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 67 transitions, 268 flow [2024-10-14 14:31:49,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 67 transitions, 264 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-14 14:31:49,983 INFO L231 Difference]: Finished difference. Result has 73 places, 67 transitions, 184 flow [2024-10-14 14:31:49,984 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=184, PETRI_PLACES=73, PETRI_TRANSITIONS=67} [2024-10-14 14:31:49,984 INFO L277 CegarLoopForPetriNet]: 63 programPoint places, 10 predicate places. [2024-10-14 14:31:49,984 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 184 flow [2024-10-14 14:31:49,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 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) [2024-10-14 14:31:49,985 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:31:49,985 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2024-10-14 14:31:49,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 14:31:50,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:31:50,190 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:31:50,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:31:50,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1750013881, now seen corresponding path program 2 times [2024-10-14 14:31:50,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:31:50,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602456339] [2024-10-14 14:31:50,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:31:50,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:31:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:31:50,363 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 14:31:50,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:31:50,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602456339] [2024-10-14 14:31:50,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602456339] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:31:50,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800495355] [2024-10-14 14:31:50,363 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 14:31:50,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:31:50,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:31:50,367 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) [2024-10-14 14:31:50,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 14:31:50,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 14:31:50,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:31:50,531 INFO L255 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 14:31:50,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:31:50,550 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 14:31:50,551 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:31:50,605 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 14:31:50,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800495355] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:31:50,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:31:50,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-10-14 14:31:50,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003150777] [2024-10-14 14:31:50,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:31:50,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 14:31:50,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:31:50,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 14:31:50,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-14 14:31:50,608 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 77 [2024-10-14 14:31:50,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 184 flow. Second operand has 13 states, 13 states have (on average 16.307692307692307) internal successors, (212), 13 states have internal predecessors, (212), 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) [2024-10-14 14:31:50,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:31:50,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 77 [2024-10-14 14:31:50,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:31:51,039 INFO L124 PetriNetUnfolderBase]: 2345/4518 cut-off events. [2024-10-14 14:31:51,041 INFO L125 PetriNetUnfolderBase]: For 155/155 co-relation queries the response was YES. [2024-10-14 14:31:51,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8384 conditions, 4518 events. 2345/4518 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 27479 event pairs, 2178 based on Foata normal form. 6/3817 useless extension candidates. Maximal degree in co-relation 8325. Up to 3752 conditions per place. [2024-10-14 14:31:51,054 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 47 selfloop transitions, 11 changer transitions 0/73 dead transitions. [2024-10-14 14:31:51,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 73 transitions, 336 flow [2024-10-14 14:31:51,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-14 14:31:51,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-14 14:31:51,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 244 transitions. [2024-10-14 14:31:51,058 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.26406926406926406 [2024-10-14 14:31:51,059 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 184 flow. Second operand 12 states and 244 transitions. [2024-10-14 14:31:51,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 73 transitions, 336 flow [2024-10-14 14:31:51,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 73 transitions, 322 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-14 14:31:51,062 INFO L231 Difference]: Finished difference. Result has 89 places, 73 transitions, 254 flow [2024-10-14 14:31:51,063 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=254, PETRI_PLACES=89, PETRI_TRANSITIONS=73} [2024-10-14 14:31:51,063 INFO L277 CegarLoopForPetriNet]: 63 programPoint places, 26 predicate places. [2024-10-14 14:31:51,064 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 73 transitions, 254 flow [2024-10-14 14:31:51,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 16.307692307692307) internal successors, (212), 13 states have internal predecessors, (212), 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) [2024-10-14 14:31:51,064 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:31:51,064 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2024-10-14 14:31:51,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-14 14:31:51,265 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,SelfDestructingSolverStorable2 [2024-10-14 14:31:51,266 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:31:51,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:31:51,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1332676295, now seen corresponding path program 3 times [2024-10-14 14:31:51,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:31:51,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169834189] [2024-10-14 14:31:51,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:31:51,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:31:51,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:31:51,657 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 14:31:51,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:31:51,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169834189] [2024-10-14 14:31:51,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169834189] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:31:51,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908453293] [2024-10-14 14:31:51,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 14:31:51,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:31:51,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:31:51,662 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) [2024-10-14 14:31:51,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 14:33:09,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-10-14 14:33:09,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:33:09,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 14:33:09,620 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:33:09,641 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 14:33:09,641 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:33:09,790 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 14:33:09,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908453293] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:33:09,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:33:09,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2024-10-14 14:33:09,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342115401] [2024-10-14 14:33:09,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:33:09,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-14 14:33:09,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:33:09,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-14 14:33:09,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-10-14 14:33:09,792 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 77 [2024-10-14 14:33:09,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 73 transitions, 254 flow. Second operand has 25 states, 25 states have (on average 16.16) internal successors, (404), 25 states have internal predecessors, (404), 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) [2024-10-14 14:33:09,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:33:09,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 77 [2024-10-14 14:33:09,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:33:10,313 INFO L124 PetriNetUnfolderBase]: 2345/4530 cut-off events. [2024-10-14 14:33:10,313 INFO L125 PetriNetUnfolderBase]: For 598/598 co-relation queries the response was YES. [2024-10-14 14:33:10,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8468 conditions, 4530 events. 2345/4530 cut-off events. For 598/598 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 27459 event pairs, 2178 based on Foata normal form. 12/3835 useless extension candidates. Maximal degree in co-relation 8331. Up to 3752 conditions per place. [2024-10-14 14:33:10,332 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 47 selfloop transitions, 23 changer transitions 0/85 dead transitions. [2024-10-14 14:33:10,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 85 transitions, 490 flow [2024-10-14 14:33:10,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-14 14:33:10,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-14 14:33:10,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 442 transitions. [2024-10-14 14:33:10,335 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.23917748917748918 [2024-10-14 14:33:10,335 INFO L175 Difference]: Start difference. First operand has 89 places, 73 transitions, 254 flow. Second operand 24 states and 442 transitions. [2024-10-14 14:33:10,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 85 transitions, 490 flow [2024-10-14 14:33:10,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 85 transitions, 418 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-10-14 14:33:10,340 INFO L231 Difference]: Finished difference. Result has 119 places, 85 transitions, 374 flow [2024-10-14 14:33:10,340 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=374, PETRI_PLACES=119, PETRI_TRANSITIONS=85} [2024-10-14 14:33:10,341 INFO L277 CegarLoopForPetriNet]: 63 programPoint places, 56 predicate places. [2024-10-14 14:33:10,341 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 85 transitions, 374 flow [2024-10-14 14:33:10,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 16.16) internal successors, (404), 25 states have internal predecessors, (404), 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) [2024-10-14 14:33:10,341 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:33:10,341 INFO L204 CegarLoopForPetriNet]: trace histogram [22, 2, 1, 1, 1, 1, 1] [2024-10-14 14:33:10,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-14 14:33:10,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:33:10,545 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:33:10,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:33:10,546 INFO L85 PathProgramCache]: Analyzing trace with hash -708795449, now seen corresponding path program 4 times [2024-10-14 14:33:10,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:33:10,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965938504] [2024-10-14 14:33:10,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:33:10,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:33:10,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:33:11,445 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 14:33:11,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:33:11,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965938504] [2024-10-14 14:33:11,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965938504] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:33:11,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262917380] [2024-10-14 14:33:11,446 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 14:33:11,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:33:11,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:33:11,448 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 14:33:11,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 14:33:11,797 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 14:33:11,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:33:11,802 INFO L255 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-14 14:33:11,805 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:33:11,858 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 14:33:11,858 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:33:12,418 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 14:33:12,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262917380] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:33:12,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:33:12,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2024-10-14 14:33:12,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317534357] [2024-10-14 14:33:12,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:33:12,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-10-14 14:33:12,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:33:12,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-10-14 14:33:12,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-10-14 14:33:12,421 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 77 [2024-10-14 14:33:12,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 85 transitions, 374 flow. Second operand has 49 states, 49 states have (on average 16.081632653061224) internal successors, (788), 49 states have internal predecessors, (788), 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) [2024-10-14 14:33:12,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:33:12,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 77 [2024-10-14 14:33:12,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:33:12,951 INFO L124 PetriNetUnfolderBase]: 2345/4554 cut-off events. [2024-10-14 14:33:12,951 INFO L125 PetriNetUnfolderBase]: For 5368/5368 co-relation queries the response was YES. [2024-10-14 14:33:12,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8612 conditions, 4554 events. 2345/4554 cut-off events. For 5368/5368 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 27459 event pairs, 2178 based on Foata normal form. 24/3871 useless extension candidates. Maximal degree in co-relation 8343. Up to 3752 conditions per place. [2024-10-14 14:33:12,967 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 47 selfloop transitions, 47 changer transitions 0/109 dead transitions. [2024-10-14 14:33:12,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 109 transitions, 754 flow [2024-10-14 14:33:12,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-10-14 14:33:12,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2024-10-14 14:33:12,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 838 transitions. [2024-10-14 14:33:12,970 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.22673160173160173 [2024-10-14 14:33:12,970 INFO L175 Difference]: Start difference. First operand has 119 places, 85 transitions, 374 flow. Second operand 48 states and 838 transitions. [2024-10-14 14:33:12,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 109 transitions, 754 flow [2024-10-14 14:33:12,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 109 transitions, 610 flow, removed 61 selfloop flow, removed 11 redundant places. [2024-10-14 14:33:12,975 INFO L231 Difference]: Finished difference. Result has 179 places, 109 transitions, 614 flow [2024-10-14 14:33:12,976 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=614, PETRI_PLACES=179, PETRI_TRANSITIONS=109} [2024-10-14 14:33:12,976 INFO L277 CegarLoopForPetriNet]: 63 programPoint places, 116 predicate places. [2024-10-14 14:33:12,976 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 109 transitions, 614 flow [2024-10-14 14:33:12,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 16.081632653061224) internal successors, (788), 49 states have internal predecessors, (788), 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) [2024-10-14 14:33:12,977 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:33:12,977 INFO L204 CegarLoopForPetriNet]: trace histogram [46, 2, 1, 1, 1, 1, 1] [2024-10-14 14:33:12,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-14 14:33:13,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:33:13,178 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:33:13,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:33:13,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1209621959, now seen corresponding path program 5 times [2024-10-14 14:33:13,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:33:13,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240811808] [2024-10-14 14:33:13,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:33:13,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:33:13,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:33:15,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 14:33:15,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:33:15,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240811808] [2024-10-14 14:33:15,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240811808] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:33:15,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145161343] [2024-10-14 14:33:15,564 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 14:33:15,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:33:15,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:33:15,565 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 14:33:15,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process