./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_87-lists_racefree.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_87-lists_racefree.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 7be9b237ca4111a24c77c67cce26f31a788af03984af96dee7353f79c789c2c1 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 12:25:03,955 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 12:25:04,013 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 12:25:04,017 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 12:25:04,018 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 12:25:04,037 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 12:25:04,038 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 12:25:04,038 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 12:25:04,039 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 12:25:04,039 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 12:25:04,040 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 12:25:04,040 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 12:25:04,041 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 12:25:04,041 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 12:25:04,041 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 12:25:04,042 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 12:25:04,042 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 12:25:04,043 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 12:25:04,043 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 12:25:04,043 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 12:25:04,044 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 12:25:04,044 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 12:25:04,045 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 12:25:04,045 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 12:25:04,045 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 12:25:04,046 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 12:25:04,046 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 12:25:04,046 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 12:25:04,047 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 12:25:04,047 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 12:25:04,047 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 12:25:04,048 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 12:25:04,048 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:25:04,048 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 12:25:04,049 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 12:25:04,049 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 12:25:04,049 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 12:25:04,050 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 12:25:04,050 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 12:25:04,050 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 12:25:04,051 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 12:25:04,051 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 12:25:04,052 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7be9b237ca4111a24c77c67cce26f31a788af03984af96dee7353f79c789c2c1 [2024-10-24 12:25:04,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 12:25:04,329 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 12:25:04,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 12:25:04,334 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 12:25:04,335 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 12:25:04,336 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i [2024-10-24 12:25:06,137 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 12:25:06,389 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 12:25:06,390 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i [2024-10-24 12:25:06,410 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0412e7b5/ae99166c2b6842e5ab69d67bfe2092e7/FLAG4675c4ab5 [2024-10-24 12:25:06,424 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0412e7b5/ae99166c2b6842e5ab69d67bfe2092e7 [2024-10-24 12:25:06,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 12:25:06,429 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 12:25:06,434 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 12:25:06,434 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 12:25:06,440 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 12:25:06,442 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:25:06" (1/1) ... [2024-10-24 12:25:06,443 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a6348b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:06, skipping insertion in model container [2024-10-24 12:25:06,445 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:25:06" (1/1) ... [2024-10-24 12:25:06,525 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 12:25:07,092 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_87-lists_racefree.i[47038,47051] [2024-10-24 12:25:07,145 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:25:07,234 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 12:25:07,284 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_87-lists_racefree.i[47038,47051] [2024-10-24 12:25:07,304 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:25:07,365 INFO L204 MainTranslator]: Completed translation [2024-10-24 12:25:07,366 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:07 WrapperNode [2024-10-24 12:25:07,366 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 12:25:07,368 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 12:25:07,368 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 12:25:07,368 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 12:25:07,375 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:07" (1/1) ... [2024-10-24 12:25:07,395 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:07" (1/1) ... [2024-10-24 12:25:07,446 INFO L138 Inliner]: procedures = 279, calls = 68, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 252 [2024-10-24 12:25:07,446 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 12:25:07,447 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 12:25:07,447 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 12:25:07,447 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 12:25:07,485 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:07" (1/1) ... [2024-10-24 12:25:07,486 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:07" (1/1) ... [2024-10-24 12:25:07,498 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:07" (1/1) ... [2024-10-24 12:25:07,544 INFO L175 MemorySlicer]: Split 35 memory accesses to 8 slices as follows [2, 5, 4, 5, 1, 2, 2, 14]. 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, 1, 1, 8]. [2024-10-24 12:25:07,548 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:07" (1/1) ... [2024-10-24 12:25:07,549 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:07" (1/1) ... [2024-10-24 12:25:07,587 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:07" (1/1) ... [2024-10-24 12:25:07,604 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:07" (1/1) ... [2024-10-24 12:25:07,615 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:07" (1/1) ... [2024-10-24 12:25:07,625 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:07" (1/1) ... [2024-10-24 12:25:07,645 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 12:25:07,646 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 12:25:07,646 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 12:25:07,646 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 12:25:07,647 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:07" (1/1) ... [2024-10-24 12:25:07,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:25:07,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:25:07,698 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 12:25:07,702 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 12:25:07,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 12:25:07,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-24 12:25:07,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-24 12:25:07,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-24 12:25:07,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-10-24 12:25:07,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-10-24 12:25:07,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-10-24 12:25:07,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-10-24 12:25:07,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-10-24 12:25:07,768 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2024-10-24 12:25:07,768 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2024-10-24 12:25:07,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 12:25:07,769 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-24 12:25:07,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 12:25:07,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 12:25:07,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 12:25:07,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-24 12:25:07,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-24 12:25:07,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-10-24 12:25:07,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-10-24 12:25:07,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-10-24 12:25:07,771 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-10-24 12:25:07,771 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-10-24 12:25:07,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 12:25:07,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 12:25:07,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 12:25:07,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-24 12:25:07,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-24 12:25:07,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-10-24 12:25:07,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-10-24 12:25:07,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-10-24 12:25:07,773 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-24 12:25:07,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 12:25:07,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 12:25:07,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-24 12:25:07,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-24 12:25:07,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-24 12:25:07,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-10-24 12:25:07,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-10-24 12:25:07,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-10-24 12:25:07,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-10-24 12:25:07,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-10-24 12:25:07,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 12:25:07,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 12:25:07,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 12:25:07,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-24 12:25:07,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-24 12:25:07,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-24 12:25:07,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-24 12:25:07,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-24 12:25:07,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 12:25:07,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 12:25:07,780 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 12:25:07,995 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 12:25:07,998 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 12:25:08,397 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 12:25:08,397 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 12:25:08,717 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 12:25:08,718 INFO L314 CfgBuilder]: Removed 16 assume(true) statements. [2024-10-24 12:25:08,718 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:25:08 BoogieIcfgContainer [2024-10-24 12:25:08,719 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 12:25:08,721 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 12:25:08,722 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 12:25:08,725 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 12:25:08,725 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:25:06" (1/3) ... [2024-10-24 12:25:08,726 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d625cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:25:08, skipping insertion in model container [2024-10-24 12:25:08,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:07" (2/3) ... [2024-10-24 12:25:08,726 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d625cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:25:08, skipping insertion in model container [2024-10-24 12:25:08,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:25:08" (3/3) ... [2024-10-24 12:25:08,728 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_87-lists_racefree.i [2024-10-24 12:25:08,827 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 12:25:08,827 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 12:25:08,828 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 12:25:08,918 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-24 12:25:08,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 77 transitions, 174 flow [2024-10-24 12:25:09,037 INFO L124 PetriNetUnfolderBase]: 37/157 cut-off events. [2024-10-24 12:25:09,037 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-10-24 12:25:09,043 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 573 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. [2024-10-24 12:25:09,044 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 77 transitions, 174 flow [2024-10-24 12:25:09,047 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 75 transitions, 164 flow [2024-10-24 12:25:09,056 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:25:09,063 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;@5bda5629, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:25:09,064 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-24 12:25:09,073 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 12:25:09,074 INFO L124 PetriNetUnfolderBase]: 1/21 cut-off events. [2024-10-24 12:25:09,074 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 12:25:09,075 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:25:09,076 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-10-24 12:25:09,077 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)] === [2024-10-24 12:25:09,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:25:09,085 INFO L85 PathProgramCache]: Analyzing trace with hash -2068486777, now seen corresponding path program 1 times [2024-10-24 12:25:09,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:25:09,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678689771] [2024-10-24 12:25:09,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:25:09,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:25:09,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:25:09,449 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 12:25:09,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:25:09,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678689771] [2024-10-24 12:25:09,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678689771] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:25:09,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:25:09,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 12:25:09,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186902557] [2024-10-24 12:25:09,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:25:09,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 12:25:09,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:25:09,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 12:25:09,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 12:25:09,502 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 77 [2024-10-24 12:25:09,505 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) [2024-10-24 12:25:09,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:25:09,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 77 [2024-10-24 12:25:09,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:25:10,736 INFO L124 PetriNetUnfolderBase]: 2345/4510 cut-off events. [2024-10-24 12:25:10,736 INFO L125 PetriNetUnfolderBase]: For 134/134 co-relation queries the response was YES. [2024-10-24 12:25:10,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8332 conditions, 4510 events. 2345/4510 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 27498 event pairs, 2178 based on Foata normal form. 406/4208 useless extension candidates. Maximal degree in co-relation 7099. Up to 3752 conditions per place. [2024-10-24 12:25:10,768 INFO L140 encePairwiseOnDemand]: 62/77 looper letters, 47 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2024-10-24 12:25:10,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 64 transitions, 240 flow [2024-10-24 12:25:10,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 12:25:10,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 12:25:10,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2024-10-24 12:25:10,782 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46320346320346323 [2024-10-24 12:25:10,784 INFO L175 Difference]: Start difference. First operand has 63 places, 75 transitions, 164 flow. Second operand 3 states and 107 transitions. [2024-10-24 12:25:10,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 64 transitions, 240 flow [2024-10-24 12:25:10,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 64 transitions, 240 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 12:25:10,796 INFO L231 Difference]: Finished difference. Result has 66 places, 64 transitions, 152 flow [2024-10-24 12:25:10,800 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} [2024-10-24 12:25:10,806 INFO L277 CegarLoopForPetriNet]: 63 programPoint places, 3 predicate places. [2024-10-24 12:25:10,807 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 64 transitions, 152 flow [2024-10-24 12:25:10,807 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 12:25:10,807 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:25:10,807 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-10-24 12:25:10,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 12:25:10,808 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)] === [2024-10-24 12:25:10,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:25:10,809 INFO L85 PathProgramCache]: Analyzing trace with hash -602517287, now seen corresponding path program 1 times [2024-10-24 12:25:10,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:25:10,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252406982] [2024-10-24 12:25:10,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:25:10,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:25:10,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:25:10,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:25:10,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:25:10,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252406982] [2024-10-24 12:25:10,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252406982] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:25:10,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119000419] [2024-10-24 12:25:10,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:25:10,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:25:10,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:25:10,983 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 12:25:10,990 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 12:25:11,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:25:11,148 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 12:25:11,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:25:11,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:25:11,189 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:25:11,216 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:25:11,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119000419] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:25:11,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:25:11,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-24 12:25:11,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573691220] [2024-10-24 12:25:11,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:25:11,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 12:25:11,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:25:11,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 12:25:11,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-24 12:25:11,223 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 77 [2024-10-24 12:25:11,224 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) [2024-10-24 12:25:11,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:25:11,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 77 [2024-10-24 12:25:11,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:25:11,914 INFO L124 PetriNetUnfolderBase]: 2345/4513 cut-off events. [2024-10-24 12:25:11,915 INFO L125 PetriNetUnfolderBase]: For 134/134 co-relation queries the response was YES. [2024-10-24 12:25:11,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8348 conditions, 4513 events. 2345/4513 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 27494 event pairs, 2178 based on Foata normal form. 0/3805 useless extension candidates. Maximal degree in co-relation 8335. Up to 3752 conditions per place. [2024-10-24 12:25:11,940 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 47 selfloop transitions, 5 changer transitions 0/67 dead transitions. [2024-10-24 12:25:11,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 67 transitions, 268 flow [2024-10-24 12:25:11,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:25:11,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 12:25:11,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-10-24 12:25:11,945 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31385281385281383 [2024-10-24 12:25:11,945 INFO L175 Difference]: Start difference. First operand has 66 places, 64 transitions, 152 flow. Second operand 6 states and 145 transitions. [2024-10-24 12:25:11,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 67 transitions, 268 flow [2024-10-24 12:25:11,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 67 transitions, 264 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-24 12:25:11,951 INFO L231 Difference]: Finished difference. Result has 73 places, 67 transitions, 184 flow [2024-10-24 12:25:11,951 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} [2024-10-24 12:25:11,952 INFO L277 CegarLoopForPetriNet]: 63 programPoint places, 10 predicate places. [2024-10-24 12:25:11,952 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 184 flow [2024-10-24 12:25:11,953 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) [2024-10-24 12:25:11,953 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:25:11,954 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2024-10-24 12:25:11,976 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 12:25:12,158 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 [2024-10-24 12:25:12,160 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)] === [2024-10-24 12:25:12,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:25:12,162 INFO L85 PathProgramCache]: Analyzing trace with hash -885085689, now seen corresponding path program 2 times [2024-10-24 12:25:12,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:25:12,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349536292] [2024-10-24 12:25:12,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:25:12,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:25:12,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:25:12,394 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:25:12,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:25:12,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349536292] [2024-10-24 12:25:12,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349536292] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:25:12,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581638202] [2024-10-24 12:25:12,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 12:25:12,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:25:12,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:25:12,398 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 12:25:12,400 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 12:25:12,580 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 12:25:12,580 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:25:12,583 INFO L255 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 12:25:12,584 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:25:12,602 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:25:12,602 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:25:12,660 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:25:12,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581638202] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:25:12,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:25:12,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-10-24 12:25:12,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499047946] [2024-10-24 12:25:12,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:25:12,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 12:25:12,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:25:12,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 12:25:12,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-24 12:25:12,663 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 77 [2024-10-24 12:25:12,664 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) [2024-10-24 12:25:12,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:25:12,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 77 [2024-10-24 12:25:12,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:25:13,430 INFO L124 PetriNetUnfolderBase]: 2345/4519 cut-off events. [2024-10-24 12:25:13,430 INFO L125 PetriNetUnfolderBase]: For 154/154 co-relation queries the response was YES. [2024-10-24 12:25:13,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8385 conditions, 4519 events. 2345/4519 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 27483 event pairs, 2178 based on Foata normal form. 6/3818 useless extension candidates. Maximal degree in co-relation 8326. Up to 3752 conditions per place. [2024-10-24 12:25:13,455 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 47 selfloop transitions, 11 changer transitions 0/73 dead transitions. [2024-10-24 12:25:13,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 73 transitions, 336 flow [2024-10-24 12:25:13,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 12:25:13,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-24 12:25:13,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 244 transitions. [2024-10-24 12:25:13,458 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.26406926406926406 [2024-10-24 12:25:13,458 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 184 flow. Second operand 12 states and 244 transitions. [2024-10-24 12:25:13,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 73 transitions, 336 flow [2024-10-24 12:25:13,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 73 transitions, 322 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-24 12:25:13,462 INFO L231 Difference]: Finished difference. Result has 89 places, 73 transitions, 254 flow [2024-10-24 12:25:13,462 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} [2024-10-24 12:25:13,463 INFO L277 CegarLoopForPetriNet]: 63 programPoint places, 26 predicate places. [2024-10-24 12:25:13,463 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 73 transitions, 254 flow [2024-10-24 12:25:13,464 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) [2024-10-24 12:25:13,464 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:25:13,464 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2024-10-24 12:25:13,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 12:25:13,664 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 [2024-10-24 12:25:13,666 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)] === [2024-10-24 12:25:13,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:25:13,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1354815687, now seen corresponding path program 3 times [2024-10-24 12:25:13,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:25:13,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604325553] [2024-10-24 12:25:13,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:25:13,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:25:13,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:25:14,103 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:25:14,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:25:14,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604325553] [2024-10-24 12:25:14,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604325553] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:25:14,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271139892] [2024-10-24 12:25:14,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 12:25:14,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:25:14,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:25:14,106 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 12:25:14,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process