./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/popl20-commit-2.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7c74aec 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/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/popl20-commit-2.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.fix-undeclared-acsl-variable-e7c74ae-m [2024-02-07 19:16:10,382 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 19:16:10,461 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 19:16:10,467 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 19:16:10,467 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 19:16:10,498 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 19:16:10,499 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 19:16:10,499 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 19:16:10,500 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 19:16:10,503 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 19:16:10,504 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 19:16:10,504 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 19:16:10,505 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 19:16:10,506 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 19:16:10,507 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 19:16:10,507 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 19:16:10,507 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 19:16:10,507 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 19:16:10,508 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 19:16:10,508 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 19:16:10,508 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 19:16:10,509 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 19:16:10,509 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 19:16:10,509 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 19:16:10,509 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 19:16:10,510 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 19:16:10,510 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 19:16:10,510 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 19:16:10,511 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 19:16:10,511 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 19:16:10,512 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 19:16:10,512 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 19:16:10,512 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:16:10,513 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 19:16:10,513 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 19:16:10,513 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 19:16:10,513 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 19:16:10,513 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 19:16:10,514 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 19:16:10,514 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 19:16:10,514 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 19:16:10,514 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 19:16:10,515 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 19:16:10,515 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 19:16:10,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 19:16:10,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 19:16:10,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 19:16:10,811 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 19:16:10,812 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 19:16:10,813 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c [2024-02-07 19:16:11,944 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 19:16:12,166 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 19:16:12,168 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c [2024-02-07 19:16:12,175 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c58052696/294e8e34dbe94f7e8be35a4fe41e5a41/FLAGb52d691b2 [2024-02-07 19:16:12,290 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c58052696/294e8e34dbe94f7e8be35a4fe41e5a41 [2024-02-07 19:16:12,293 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 19:16:12,294 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 19:16:12,294 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/popl20-commit-2.wvr.yml/witness.yml [2024-02-07 19:16:12,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 19:16:12,418 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 19:16:12,419 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 19:16:12,419 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 19:16:12,424 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 19:16:12,424 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:16:12" (1/2) ... [2024-02-07 19:16:12,425 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ec3027e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:16:12, skipping insertion in model container [2024-02-07 19:16:12,426 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:16:12" (1/2) ... [2024-02-07 19:16:12,428 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4304dd5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:16:12, skipping insertion in model container [2024-02-07 19:16:12,428 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:16:12" (2/2) ... [2024-02-07 19:16:12,428 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ec3027e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:16:12, skipping insertion in model container [2024-02-07 19:16:12,429 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:16:12" (2/2) ... [2024-02-07 19:16:12,429 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 19:16:12,472 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 19:16:12,474 INFO L76 edCorrectnessWitness]: Location invariant before [L140-L140] safe == (_Bool)0 || safe == (_Bool)1 [2024-02-07 19:16:12,474 INFO L76 edCorrectnessWitness]: Location invariant before [L120-L120] 0 <= manager_back [2024-02-07 19:16:12,474 INFO L76 edCorrectnessWitness]: Location invariant before [L139-L139] safe == (_Bool)1 [2024-02-07 19:16:12,475 INFO L76 edCorrectnessWitness]: Location invariant before [L81-L81] -2147483647 <= manager_front [2024-02-07 19:16:12,475 INFO L76 edCorrectnessWitness]: Location invariant before [L66-L66] 0 <= node2_back [2024-02-07 19:16:12,476 INFO L76 edCorrectnessWitness]: Location invariant before [L98-L98] safe == (_Bool)0 || safe == (_Bool)1 [2024-02-07 19:16:12,476 INFO L76 edCorrectnessWitness]: Location invariant before [L99-L99] -2147483647 <= node1_front [2024-02-07 19:16:12,476 INFO L76 edCorrectnessWitness]: Location invariant before [L116-L116] safe == (_Bool)0 || safe == (_Bool)1 [2024-02-07 19:16:12,476 INFO L76 edCorrectnessWitness]: Location invariant before [L63-L63] -2147483647 <= node1_back [2024-02-07 19:16:12,476 INFO L76 edCorrectnessWitness]: Location invariant before [L132-L132] 0 <= manager_back [2024-02-07 19:16:12,476 INFO L76 edCorrectnessWitness]: Location invariant before [L152-L152] safe == (_Bool)1 [2024-02-07 19:16:12,477 INFO L76 edCorrectnessWitness]: Location invariant before [L102-L102] 0 <= manager_back [2024-02-07 19:16:12,477 INFO L76 edCorrectnessWitness]: Location invariant before [L60-L60] 0 <= node1_back [2024-02-07 19:16:12,477 INFO L76 edCorrectnessWitness]: Location invariant before [L138-L138] (-2147483647 <= client_back) && (client_front <= 2147483646) [2024-02-07 19:16:12,477 INFO L76 edCorrectnessWitness]: Location invariant before [L57-L57] -2147483647 <= manager_front [2024-02-07 19:16:12,477 INFO L76 edCorrectnessWitness]: Location invariant before [L80-L80] safe == (_Bool)0 || safe == (_Bool)1 [2024-02-07 19:16:12,478 INFO L76 edCorrectnessWitness]: Location invariant before [L54-L54] (-2147483647 <= manager_back) && (manager_front <= 2147483646) [2024-02-07 19:16:12,478 INFO L76 edCorrectnessWitness]: Location invariant before [L84-L84] 0 <= client_back [2024-02-07 19:16:12,478 INFO L76 edCorrectnessWitness]: Location invariant before [L117-L117] -2147483647 <= node2_front [2024-02-07 19:16:12,478 INFO L76 edCorrectnessWitness]: Location invariant before [L73-L73] safe == (_Bool)1 [2024-02-07 19:16:12,478 INFO L76 edCorrectnessWitness]: Location invariant before [L114-L114] (-2147483647 <= node2_back) && (node2_front <= 2147483646) [2024-02-07 19:16:12,479 INFO L76 edCorrectnessWitness]: Location invariant before [L74-L74] safe == (_Bool)0 || safe == (_Bool)1 [2024-02-07 19:16:12,479 INFO L76 edCorrectnessWitness]: Location invariant before [L141-L141] -2147483647 <= client_front [2024-02-07 19:16:12,479 INFO L76 edCorrectnessWitness]: Location invariant before [L87-L87] -2147483647 <= client_back [2024-02-07 19:16:12,479 INFO L76 edCorrectnessWitness]: Location invariant before [L96-L96] (-2147483647 <= node1_back) && (node1_front <= 2147483646) [2024-02-07 19:16:12,479 INFO L76 edCorrectnessWitness]: Location invariant before [L78-L78] (-2147483647 <= manager_back) && (manager_front <= 2147483646) [2024-02-07 19:16:12,480 INFO L76 edCorrectnessWitness]: Location invariant before [L105-L105] -2147483647 <= manager_back [2024-02-07 19:16:12,480 INFO L76 edCorrectnessWitness]: Location invariant before [L97-L97] safe == (_Bool)1 [2024-02-07 19:16:12,480 INFO L76 edCorrectnessWitness]: Location invariant before [L55-L55] safe == (_Bool)1 [2024-02-07 19:16:12,480 INFO L76 edCorrectnessWitness]: Location invariant before [L197-L197] ((((((((8 <= i && i <= 2147483646) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 19:16:12,480 INFO L76 edCorrectnessWitness]: Location invariant before [L75-L75] -2147483647 <= manager_front [2024-02-07 19:16:12,481 INFO L76 edCorrectnessWitness]: Location invariant before [L72-L72] (-2147483647 <= manager_back) && (manager_front <= 2147483646) [2024-02-07 19:16:12,481 INFO L76 edCorrectnessWitness]: Location invariant before [L185-L185] safe == (_Bool)0 || safe == (_Bool)1 [2024-02-07 19:16:12,481 INFO L76 edCorrectnessWitness]: Location invariant before [L56-L56] safe == (_Bool)0 || safe == (_Bool)1 [2024-02-07 19:16:12,481 INFO L76 edCorrectnessWitness]: Location invariant before [L135-L135] -2147483647 <= manager_back [2024-02-07 19:16:12,481 INFO L76 edCorrectnessWitness]: Location invariant before [L79-L79] safe == (_Bool)1 [2024-02-07 19:16:12,481 INFO L76 edCorrectnessWitness]: Location invariant before [L69-L69] -2147483647 <= node2_back [2024-02-07 19:16:12,482 INFO L76 edCorrectnessWitness]: Location invariant before [L123-L123] -2147483647 <= manager_back [2024-02-07 19:16:12,509 INFO L181 MainTranslator]: Built tables and reachable declarations [2024-02-07 19:16:12,726 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c[5898,5911] [2024-02-07 19:16:12,734 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:16:12,742 INFO L206 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 19:16:12,820 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c[5898,5911] Start Parsing Local [2024-02-07 19:16:12,824 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:16:12,840 INFO L211 MainTranslator]: Completed translation [2024-02-07 19:16:12,841 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:16:12 WrapperNode [2024-02-07 19:16:12,841 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 19:16:12,842 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 19:16:12,842 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 19:16:12,842 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 19:16:12,849 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:16:12" (1/1) ... [2024-02-07 19:16:12,873 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:16:12" (1/1) ... [2024-02-07 19:16:12,919 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 522 [2024-02-07 19:16:12,929 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 19:16:12,930 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 19:16:12,931 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 19:16:12,931 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 19:16:12,943 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:16:12" (1/1) ... [2024-02-07 19:16:12,943 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:16:12" (1/1) ... [2024-02-07 19:16:12,959 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:16:12" (1/1) ... [2024-02-07 19:16:12,991 INFO L175 MemorySlicer]: Split 26 memory accesses to 6 slices as follows [2, 2, 2, 2, 2, 16]. 62 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 8 writes are split as follows [0, 1, 1, 1, 1, 4]. [2024-02-07 19:16:12,997 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:16:12" (1/1) ... [2024-02-07 19:16:12,998 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:16:12" (1/1) ... [2024-02-07 19:16:13,013 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:16:12" (1/1) ... [2024-02-07 19:16:13,034 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:16:12" (1/1) ... [2024-02-07 19:16:13,037 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:16:12" (1/1) ... [2024-02-07 19:16:13,043 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:16:12" (1/1) ... [2024-02-07 19:16:13,049 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 19:16:13,053 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 19:16:13,053 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 19:16:13,054 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 19:16:13,054 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:16:12" (1/1) ... [2024-02-07 19:16:13,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:16:13,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:16:13,085 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) [2024-02-07 19:16:13,103 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 [2024-02-07 19:16:13,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 19:16:13,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 19:16:13,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 19:16:13,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 19:16:13,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 19:16:13,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 19:16:13,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-07 19:16:13,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-07 19:16:13,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 19:16:13,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 19:16:13,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 19:16:13,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 19:16:13,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-07 19:16:13,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-02-07 19:16:13,123 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-07 19:16:13,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-07 19:16:13,123 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-07 19:16:13,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-07 19:16:13,123 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-07 19:16:13,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-07 19:16:13,123 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-02-07 19:16:13,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-02-07 19:16:13,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 19:16:13,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 19:16:13,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 19:16:13,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 19:16:13,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-07 19:16:13,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-07 19:16:13,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-07 19:16:13,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-07 19:16:13,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-07 19:16:13,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 19:16:13,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 19:16:13,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 19:16:13,126 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-07 19:16:13,249 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 19:16:13,251 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 19:16:13,931 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 19:16:13,931 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 19:16:14,543 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 19:16:14,544 INFO L320 CfgBuilder]: Removed 8 assume(true) statements. [2024-02-07 19:16:14,545 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:16:14 BoogieIcfgContainer [2024-02-07 19:16:14,545 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 19:16:14,548 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 19:16:14,548 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 19:16:14,551 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 19:16:14,551 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 07:16:12" (1/4) ... [2024-02-07 19:16:14,553 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f977ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:16:14, skipping insertion in model container [2024-02-07 19:16:14,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:16:12" (2/4) ... [2024-02-07 19:16:14,554 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f977ac and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:16:14, skipping insertion in model container [2024-02-07 19:16:14,554 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:16:12" (3/4) ... [2024-02-07 19:16:14,554 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f977ac and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:16:14, skipping insertion in model container [2024-02-07 19:16:14,555 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:16:14" (4/4) ... [2024-02-07 19:16:14,556 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2024-02-07 19:16:14,573 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 19:16:14,573 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2024-02-07 19:16:14,574 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 19:16:14,684 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-02-07 19:16:14,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 114 transitions, 256 flow [2024-02-07 19:16:14,764 INFO L124 PetriNetUnfolderBase]: 12/110 cut-off events. [2024-02-07 19:16:14,764 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-07 19:16:14,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 110 events. 12/110 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 357 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2024-02-07 19:16:14,769 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 114 transitions, 256 flow [2024-02-07 19:16:14,775 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 109 transitions, 242 flow [2024-02-07 19:16:14,789 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:16:14,800 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, 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;@6ee63ded, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:16:14,800 INFO L358 AbstractCegarLoop]: Starting to check reachability of 81 error locations. [2024-02-07 19:16:14,803 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:16:14,803 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-07 19:16:14,804 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:16:14,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:16:14,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-07 19:16:14,805 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 78 more)] === [2024-02-07 19:16:14,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:16:14,811 INFO L85 PathProgramCache]: Analyzing trace with hash 49510, now seen corresponding path program 1 times [2024-02-07 19:16:14,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:16:14,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699443612] [2024-02-07 19:16:14,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:16:14,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:16:14,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:16:15,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:16:15,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:16:15,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699443612] [2024-02-07 19:16:15,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699443612] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:16:15,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:16:15,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:16:15,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401002519] [2024-02-07 19:16:15,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:16:15,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:16:15,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:16:15,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:16:15,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:16:15,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 114 [2024-02-07 19:16:15,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 109 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2024-02-07 19:16:15,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:16:15,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 114 [2024-02-07 19:16:15,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:16:27,363 INFO L124 PetriNetUnfolderBase]: 118643/157958 cut-off events. [2024-02-07 19:16:27,363 INFO L125 PetriNetUnfolderBase]: For 4231/4231 co-relation queries the response was YES. [2024-02-07 19:16:27,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312671 conditions, 157958 events. 118643/157958 cut-off events. For 4231/4231 co-relation queries the response was YES. Maximal size of possible extension queue 8032. Compared 1125698 event pairs, 28308 based on Foata normal form. 23936/116734 useless extension candidates. Maximal degree in co-relation 295774. Up to 141331 conditions per place. [2024-02-07 19:16:28,609 INFO L140 encePairwiseOnDemand]: 81/114 looper letters, 98 selfloop transitions, 5 changer transitions 1/122 dead transitions. [2024-02-07 19:16:28,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 122 transitions, 497 flow [2024-02-07 19:16:28,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:16:28,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:16:28,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 211 transitions. [2024-02-07 19:16:28,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6169590643274854 [2024-02-07 19:16:28,622 INFO L175 Difference]: Start difference. First operand has 110 places, 109 transitions, 242 flow. Second operand 3 states and 211 transitions. [2024-02-07 19:16:28,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 122 transitions, 497 flow [2024-02-07 19:16:28,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 122 transitions, 467 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-02-07 19:16:28,742 INFO L231 Difference]: Finished difference. Result has 86 places, 90 transitions, 221 flow [2024-02-07 19:16:28,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=221, PETRI_PLACES=86, PETRI_TRANSITIONS=90} [2024-02-07 19:16:28,760 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -24 predicate places. [2024-02-07 19:16:28,760 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 90 transitions, 221 flow [2024-02-07 19:16:28,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2024-02-07 19:16:28,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:16:28,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-02-07 19:16:28,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 19:16:28,762 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 78 more)] === [2024-02-07 19:16:28,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:16:28,763 INFO L85 PathProgramCache]: Analyzing trace with hash 47629031, now seen corresponding path program 1 times [2024-02-07 19:16:28,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:16:28,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558381748] [2024-02-07 19:16:28,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:16:28,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:16:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:16:28,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:16:28,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:16:28,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558381748] [2024-02-07 19:16:28,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558381748] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:16:28,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:16:28,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:16:28,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721232384] [2024-02-07 19:16:28,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:16:28,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:16:28,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:16:28,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:16:28,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:16:28,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 114 [2024-02-07 19:16:28,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 90 transitions, 221 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2024-02-07 19:16:28,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:16:28,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 114 [2024-02-07 19:16:28,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:16:38,539 INFO L124 PetriNetUnfolderBase]: 118056/155891 cut-off events. [2024-02-07 19:16:38,539 INFO L125 PetriNetUnfolderBase]: For 8555/8555 co-relation queries the response was YES. [2024-02-07 19:16:38,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329341 conditions, 155891 events. 118056/155891 cut-off events. For 8555/8555 co-relation queries the response was YES. Maximal size of possible extension queue 7847. Compared 1062748 event pairs, 91970 based on Foata normal form. 0/103256 useless extension candidates. Maximal degree in co-relation 134848. Up to 149658 conditions per place. [2024-02-07 19:16:39,620 INFO L140 encePairwiseOnDemand]: 101/114 looper letters, 74 selfloop transitions, 9 changer transitions 0/98 dead transitions. [2024-02-07 19:16:39,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 98 transitions, 403 flow [2024-02-07 19:16:39,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:16:39,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:16:39,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2024-02-07 19:16:39,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41812865497076024 [2024-02-07 19:16:39,622 INFO L175 Difference]: Start difference. First operand has 86 places, 90 transitions, 221 flow. Second operand 3 states and 143 transitions. [2024-02-07 19:16:39,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 98 transitions, 403 flow [2024-02-07 19:16:39,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 98 transitions, 398 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:16:39,626 INFO L231 Difference]: Finished difference. Result has 89 places, 98 transitions, 292 flow [2024-02-07 19:16:39,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=89, PETRI_TRANSITIONS=98} [2024-02-07 19:16:39,627 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -21 predicate places. [2024-02-07 19:16:39,628 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 98 transitions, 292 flow [2024-02-07 19:16:39,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2024-02-07 19:16:39,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:16:39,628 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-02-07 19:16:39,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 19:16:39,629 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 78 more)] === [2024-02-07 19:16:39,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:16:39,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1473091544, now seen corresponding path program 1 times [2024-02-07 19:16:39,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:16:39,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555616095] [2024-02-07 19:16:39,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:16:39,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:16:39,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:16:39,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:16:39,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:16:39,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555616095] [2024-02-07 19:16:39,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555616095] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 19:16:39,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452638625] [2024-02-07 19:16:39,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:16:39,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:16:39,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:16:39,708 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) [2024-02-07 19:16:39,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-07 19:16:39,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:16:39,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 5 conjunts are in the unsatisfiable core [2024-02-07 19:16:39,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 19:16:39,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:16:39,888 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 19:16:39,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:16:39,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452638625] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 19:16:39,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 19:16:39,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-02-07 19:16:39,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371117264] [2024-02-07 19:16:39,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 19:16:39,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:16:39,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:16:39,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:16:39,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:16:39,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 114 [2024-02-07 19:16:39,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 98 transitions, 292 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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) [2024-02-07 19:16:39,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:16:39,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 114 [2024-02-07 19:16:39,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:16:49,465 INFO L124 PetriNetUnfolderBase]: 118060/155882 cut-off events. [2024-02-07 19:16:49,465 INFO L125 PetriNetUnfolderBase]: For 8579/8579 co-relation queries the response was YES. [2024-02-07 19:16:49,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327694 conditions, 155882 events. 118060/155882 cut-off events. For 8579/8579 co-relation queries the response was YES. Maximal size of possible extension queue 7994. Compared 1064370 event pairs, 91970 based on Foata normal form. 0/103247 useless extension candidates. Maximal degree in co-relation 327575. Up to 149659 conditions per place. [2024-02-07 19:16:50,204 INFO L140 encePairwiseOnDemand]: 101/114 looper letters, 74 selfloop transitions, 17 changer transitions 0/106 dead transitions. [2024-02-07 19:16:50,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 106 transitions, 512 flow [2024-02-07 19:16:50,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:16:50,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:16:50,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 171 transitions. [2024-02-07 19:16:50,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-02-07 19:16:50,206 INFO L175 Difference]: Start difference. First operand has 89 places, 98 transitions, 292 flow. Second operand 4 states and 171 transitions. [2024-02-07 19:16:50,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 106 transitions, 512 flow [2024-02-07 19:16:50,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 106 transitions, 488 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:16:50,210 INFO L231 Difference]: Finished difference. Result has 91 places, 106 transitions, 370 flow [2024-02-07 19:16:50,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=370, PETRI_PLACES=91, PETRI_TRANSITIONS=106} [2024-02-07 19:16:50,211 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -19 predicate places. [2024-02-07 19:16:50,212 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 106 transitions, 370 flow [2024-02-07 19:16:50,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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) [2024-02-07 19:16:50,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:16:50,212 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1] [2024-02-07 19:16:50,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-02-07 19:16:50,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:16:50,420 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 78 more)] === [2024-02-07 19:16:50,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:16:50,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1698283817, now seen corresponding path program 2 times [2024-02-07 19:16:50,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:16:50,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668551498] [2024-02-07 19:16:50,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:16:50,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:16:50,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:16:50,525 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:16:50,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:16:50,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668551498] [2024-02-07 19:16:50,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668551498] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 19:16:50,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469409559] [2024-02-07 19:16:50,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-07 19:16:50,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:16:50,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:16:50,532 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) [2024-02-07 19:16:50,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-07 19:16:50,669 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-07 19:16:50,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-07 19:16:50,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 7 conjunts are in the unsatisfiable core [2024-02-07 19:16:50,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 19:16:50,684 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:16:50,684 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 19:16:50,698 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:16:50,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469409559] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 19:16:50,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 19:16:50,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2024-02-07 19:16:50,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889159294] [2024-02-07 19:16:50,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 19:16:50,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 19:16:50,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:16:50,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 19:16:50,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-07 19:16:50,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 114 [2024-02-07 19:16:50,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 106 transitions, 370 flow. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2024-02-07 19:16:50,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:16:50,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 114 [2024-02-07 19:16:50,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand