./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1-pthread.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/read_write_lock-1-pthread.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3d25acf6 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/pthread-atomic/read_write_lock-1-pthread.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/read_write_lock-1-pthread.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-dev-3d25acf-m [2024-01-30 14:15:28,608 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-30 14:15:28,653 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-30 14:15:28,663 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-30 14:15:28,664 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-30 14:15:28,686 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-30 14:15:28,689 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-30 14:15:28,689 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-30 14:15:28,690 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-30 14:15:28,693 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-30 14:15:28,693 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-30 14:15:28,694 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-30 14:15:28,694 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-30 14:15:28,695 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-30 14:15:28,695 INFO L153 SettingsManager]: * Use SBE=true [2024-01-30 14:15:28,695 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-30 14:15:28,696 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-30 14:15:28,696 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-30 14:15:28,696 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-30 14:15:28,696 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-30 14:15:28,697 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-30 14:15:28,697 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-30 14:15:28,697 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-30 14:15:28,697 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-30 14:15:28,698 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-30 14:15:28,698 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-30 14:15:28,698 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-30 14:15:28,698 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-30 14:15:28,699 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-30 14:15:28,699 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-30 14:15:28,700 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-30 14:15:28,700 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-30 14:15:28,700 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:15:28,700 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-30 14:15:28,701 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-30 14:15:28,701 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-30 14:15:28,701 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-30 14:15:28,701 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-30 14:15:28,701 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-30 14:15:28,701 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-30 14:15:28,702 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-30 14:15:28,702 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-30 14:15:28,702 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-30 14:15:28,702 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-30 14:15:28,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-30 14:15:28,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-30 14:15:28,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-30 14:15:28,952 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-30 14:15:28,952 INFO L274 PluginConnector]: CDTParser initialized [2024-01-30 14:15:28,953 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1-pthread.i [2024-01-30 14:15:30,094 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-30 14:15:30,347 INFO L384 CDTParser]: Found 1 translation units. [2024-01-30 14:15:30,347 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1-pthread.i [2024-01-30 14:15:30,357 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c0c28e60/ec01759564224292b5b8c3629c0517b6/FLAG4c2f1c7a6 [2024-01-30 14:15:30,368 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c0c28e60/ec01759564224292b5b8c3629c0517b6 [2024-01-30 14:15:30,370 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-30 14:15:30,371 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-30 14:15:30,371 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/read_write_lock-1-pthread.yml/witness.yml [2024-01-30 14:15:30,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-30 14:15:30,525 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-30 14:15:30,527 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-30 14:15:30,528 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-30 14:15:30,531 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-30 14:15:30,532 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:15:30" (1/2) ... [2024-01-30 14:15:30,534 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e9dffbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:15:30, skipping insertion in model container [2024-01-30 14:15:30,534 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:15:30" (1/2) ... [2024-01-30 14:15:30,536 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@26206bbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:15:30, skipping insertion in model container [2024-01-30 14:15:30,536 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:15:30" (2/2) ... [2024-01-30 14:15:30,536 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e9dffbe and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:30, skipping insertion in model container [2024-01-30 14:15:30,536 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:15:30" (2/2) ... [2024-01-30 14:15:30,536 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-30 14:15:30,645 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-30 14:15:30,646 INFO L98 nessWitnessExtractor]: Location invariant before [L697-L697] (unsigned long )arg == 0UL [2024-01-30 14:15:30,646 INFO L98 nessWitnessExtractor]: Location invariant before [L706-L706] (((((((((((((((0 <= y) && (0 <= l)) && (0 <= ly)) && (y <= 3)) && (y <= 127)) && (l <= 3)) && (l <= 127)) && (ly <= 3)) && (ly <= 127)) && (y % 3 == 0)) && (l % 3 == 0)) && (ly % 3 == 0)) && ((unsigned long )arg == 0UL)) && (y == 0 || y == 3)) && (l == 0 || l == 3)) && (ly == 0 || ly == 3) [2024-01-30 14:15:30,646 INFO L98 nessWitnessExtractor]: Location invariant before [L716-L716] ((((((((((((x == 0) && (y == 0)) && (rwlock.__data.__cur_writer == 0)) && (rwlock.__data.__flags == (unsigned char)0)) && (rwlock.__data.__pad2 == (unsigned char)0)) && (rwlock.__data.__pad3 == 0U)) && (rwlock.__data.__pad4 == 0U)) && (rwlock.__data.__readers == 0U)) && (rwlock.__data.__rwelision == (signed char)0)) && (rwlock.__data.__shared == (unsigned char)0)) && (rwlock.__data.__writers == 0U)) && (rwlock.__data.__writers_futex == 0U)) && (rwlock.__data.__wrphase_futex == 0U) [2024-01-30 14:15:30,647 INFO L98 nessWitnessExtractor]: Location invariant before [L702-L702] ((((((((((0 <= y) && (0 <= l)) && (y <= 3)) && (y <= 127)) && (l <= 3)) && (l <= 127)) && (y % 3 == 0)) && (l % 3 == 0)) && ((unsigned long )arg == 0UL)) && (y == 0 || y == 3)) && (l == 0 || l == 3) [2024-01-30 14:15:30,647 INFO L98 nessWitnessExtractor]: Location invariant before [L699-L699] (((((0 <= y) && (y <= 3)) && (y <= 127)) && (y % 3 == 0)) && ((unsigned long )arg == 0UL)) && (y == 0 || y == 3) [2024-01-30 14:15:30,647 INFO L98 nessWitnessExtractor]: Location invariant before [L690-L690] (unsigned long )arg == 0UL [2024-01-30 14:15:30,648 INFO L98 nessWitnessExtractor]: Location invariant before [L692-L692] (x == 3) && ((unsigned long )arg == 0UL) [2024-01-30 14:15:30,648 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-01-30 14:15:30,648 INFO L98 nessWitnessExtractor]: Location invariant before [L709-L709] ((((((((((((((((((((0 <= y) && (0 <= l)) && (0 <= ly)) && (0 <= lx)) && (y <= 3)) && (y <= 127)) && (l <= 3)) && (l <= 127)) && (ly <= 3)) && (ly <= 127)) && (lx <= 3)) && (lx <= 127)) && (y % 3 == 0)) && (l % 3 == 0)) && (ly % 3 == 0)) && (lx % 3 == 0)) && ((unsigned long )arg == 0UL)) && (y == 0 || y == 3)) && (l == 0 || l == 3)) && (ly == 0 || ly == 3)) && (lx == 0 || lx == 3) [2024-01-30 14:15:30,648 INFO L98 nessWitnessExtractor]: Location invariant before [L701-L701] (((((0 <= l) && (l <= 3)) && (l <= 127)) && (l % 3 == 0)) && ((unsigned long )arg == 0UL)) && (l == 0 || l == 3) [2024-01-30 14:15:30,648 INFO L98 nessWitnessExtractor]: Location invariant before [L712-L712] (((((((((((((((0 <= l) && (0 <= ly)) && (0 <= lx)) && (l <= 3)) && (l <= 127)) && (ly <= 3)) && (ly <= 127)) && (lx <= 3)) && (lx <= 127)) && (l % 3 == 0)) && (ly % 3 == 0)) && (lx % 3 == 0)) && ((unsigned long )arg == 0UL)) && (l == 0 || l == 3)) && (ly == 0 || ly == 3)) && (lx == 0 || lx == 3) [2024-01-30 14:15:30,648 INFO L98 nessWitnessExtractor]: Location invariant before [L703-L703] ((((((((((0 <= y) && (0 <= l)) && (y <= 3)) && (y <= 127)) && (l <= 3)) && (l <= 127)) && (y % 3 == 0)) && (l % 3 == 0)) && ((unsigned long )arg == 0UL)) && (y == 0 || y == 3)) && (l == 0 || l == 3) [2024-01-30 14:15:30,648 INFO L98 nessWitnessExtractor]: Location invariant before [L708-L708] (((((((((((((((0 <= y) && (0 <= l)) && (0 <= ly)) && (y <= 3)) && (y <= 127)) && (l <= 3)) && (l <= 127)) && (ly <= 3)) && (ly <= 127)) && (y % 3 == 0)) && (l % 3 == 0)) && (ly % 3 == 0)) && ((unsigned long )arg == 0UL)) && (y == 0 || y == 3)) && (l == 0 || l == 3)) && (ly == 0 || ly == 3) [2024-01-30 14:15:30,649 INFO L98 nessWitnessExtractor]: Location invariant before [L705-L705] ((((((((((0 <= y) && (0 <= l)) && (y <= 3)) && (y <= 127)) && (l <= 3)) && (l <= 127)) && (y % 3 == 0)) && (l % 3 == 0)) && ((unsigned long )arg == 0UL)) && (y == 0 || y == 3)) && (l == 0 || l == 3) [2024-01-30 14:15:30,649 INFO L98 nessWitnessExtractor]: Location invariant before [L704-L704] (((((0 <= l) && (l <= 3)) && (l <= 127)) && (l % 3 == 0)) && ((unsigned long )arg == 0UL)) && (l == 0 || l == 3) [2024-01-30 14:15:30,649 INFO L98 nessWitnessExtractor]: Location invariant before [L700-L700] ((((((((((0 <= y) && (0 <= l)) && (y <= 3)) && (y <= 127)) && (l <= 3)) && (l <= 127)) && (y % 3 == 0)) && (l % 3 == 0)) && ((unsigned long )arg == 0UL)) && (y == 0 || y == 3)) && (l == 0 || l == 3) [2024-01-30 14:15:30,649 INFO L98 nessWitnessExtractor]: Location invariant before [L710-L710] (((((((((((((((((((((((((((((((0 <= l) && (0 <= ly)) && (0 <= lx)) && (l <= 3)) && (l <= 127)) && (ly <= 3)) && (ly <= 127)) && (lx <= 3)) && (lx <= 127)) && (l % 3 == 0)) && (ly % 3 == 0)) && (lx % 3 == 0)) && ((unsigned long )arg == 0UL)) && (l == 0 || l == 3)) && (ly == 0 || ly == 3)) && (lx == 0 || lx == 3)) && (0 <= l)) && (0 <= ly)) && (0 <= lx)) && (l <= 3)) && (l <= 127)) && (ly <= 3)) && (ly <= 127)) && (lx <= 3)) && (lx <= 127)) && (l % 3 == 0)) && (ly % 3 == 0)) && (lx % 3 == 0)) && ((unsigned long )arg == 0UL)) && (l == 0 || l == 3)) && (ly == 0 || ly == 3)) && (lx == 0 || lx == 3) [2024-01-30 14:15:30,649 INFO L98 nessWitnessExtractor]: Location invariant before [L691-L691] (((((0 <= x) && (x <= 3)) && (x <= 127)) && (x % 3 == 0)) && ((unsigned long )arg == 0UL)) && (x == 0 || x == 3) [2024-01-30 14:15:30,649 INFO L98 nessWitnessExtractor]: Location invariant before [L698-L698] (unsigned long )arg == 0UL [2024-01-30 14:15:30,649 INFO L98 nessWitnessExtractor]: Location invariant before [L711-L711] (((((((((((((((0 <= l) && (0 <= ly)) && (0 <= lx)) && (l <= 3)) && (l <= 127)) && (ly <= 3)) && (ly <= 127)) && (lx <= 3)) && (lx <= 127)) && (l % 3 == 0)) && (ly % 3 == 0)) && (lx % 3 == 0)) && ((unsigned long )arg == 0UL)) && (l == 0 || l == 3)) && (ly == 0 || ly == 3)) && (lx == 0 || lx == 3) [2024-01-30 14:15:30,650 INFO L98 nessWitnessExtractor]: Location invariant before [L707-L707] ((((((((((0 <= l) && (0 <= ly)) && (l <= 3)) && (l <= 127)) && (ly <= 3)) && (ly <= 127)) && (l % 3 == 0)) && (ly % 3 == 0)) && ((unsigned long )arg == 0UL)) && (l == 0 || l == 3)) && (ly == 0 || ly == 3) [2024-01-30 14:15:30,686 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-30 14:15:30,927 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1-pthread.i[30919,30932] [2024-01-30 14:15:30,934 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:15:30,944 INFO L202 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 [2024-01-30 14:15:31,068 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1-pthread.i[30919,30932] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-30 14:15:31,121 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:15:31,163 INFO L206 MainTranslator]: Completed translation [2024-01-30 14:15:31,164 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:31 WrapperNode [2024-01-30 14:15:31,164 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-30 14:15:31,165 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-30 14:15:31,165 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-30 14:15:31,165 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-30 14:15:31,182 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 30.01 02:15:31" (1/1) ... [2024-01-30 14:15:31,225 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 30.01 02:15:31" (1/1) ... [2024-01-30 14:15:31,290 INFO L138 Inliner]: procedures = 166, calls = 538, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1908 [2024-01-30 14:15:31,291 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-30 14:15:31,291 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-30 14:15:31,292 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-30 14:15:31,292 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-30 14:15:31,303 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:31" (1/1) ... [2024-01-30 14:15:31,303 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:31" (1/1) ... [2024-01-30 14:15:31,315 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:31" (1/1) ... [2024-01-30 14:15:31,342 INFO L175 MemorySlicer]: Split 505 memory accesses to 6 slices as follows [2, 2, 495, 2, 2, 2]. 98 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 0, 11, 0, 0, 0]. The 4 writes are split as follows [0, 1, 0, 1, 1, 1]. [2024-01-30 14:15:31,343 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:31" (1/1) ... [2024-01-30 14:15:31,343 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:31" (1/1) ... [2024-01-30 14:15:31,370 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:31" (1/1) ... [2024-01-30 14:15:31,374 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:31" (1/1) ... [2024-01-30 14:15:31,378 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:31" (1/1) ... [2024-01-30 14:15:31,384 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:31" (1/1) ... [2024-01-30 14:15:31,392 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-30 14:15:31,393 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-30 14:15:31,393 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-30 14:15:31,393 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-30 14:15:31,394 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:31" (1/1) ... [2024-01-30 14:15:31,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:15:31,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:15:31,426 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) [2024-01-30 14:15:31,445 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 [2024-01-30 14:15:31,455 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockUnlock [2024-01-30 14:15:31,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-30 14:15:31,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-30 14:15:31,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-30 14:15:31,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-30 14:15:31,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-30 14:15:31,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-01-30 14:15:31,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-30 14:15:31,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-30 14:15:31,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-30 14:15:31,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-30 14:15:31,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-30 14:15:31,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-01-30 14:15:31,457 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockReadLock [2024-01-30 14:15:31,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-30 14:15:31,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-30 14:15:31,458 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2024-01-30 14:15:31,458 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2024-01-30 14:15:31,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-30 14:15:31,458 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockWriteLock [2024-01-30 14:15:31,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-30 14:15:31,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-30 14:15:31,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-30 14:15:31,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-30 14:15:31,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-30 14:15:31,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-30 14:15:31,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-01-30 14:15:31,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-30 14:15:31,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-30 14:15:31,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-30 14:15:31,460 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2024-01-30 14:15:31,460 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2024-01-30 14:15:31,461 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-30 14:15:31,633 INFO L244 CfgBuilder]: Building ICFG [2024-01-30 14:15:31,635 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-30 14:15:32,866 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-30 14:15:32,866 INFO L293 CfgBuilder]: Performing block encoding [2024-01-30 14:15:49,853 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-30 14:15:49,853 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-30 14:15:49,854 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:15:49 BoogieIcfgContainer [2024-01-30 14:15:49,854 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-30 14:15:49,855 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-30 14:15:49,856 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-30 14:15:49,859 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-30 14:15:49,859 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 02:15:30" (1/4) ... [2024-01-30 14:15:49,860 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c757274 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:15:49, skipping insertion in model container [2024-01-30 14:15:49,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:15:30" (2/4) ... [2024-01-30 14:15:49,860 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c757274 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 30.01 02:15:49, skipping insertion in model container [2024-01-30 14:15:49,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:31" (3/4) ... [2024-01-30 14:15:49,860 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c757274 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 30.01 02:15:49, skipping insertion in model container [2024-01-30 14:15:49,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:15:49" (4/4) ... [2024-01-30 14:15:49,861 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-1-pthread.i [2024-01-30 14:15:49,876 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-30 14:15:49,876 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2024-01-30 14:15:49,877 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-30 14:15:49,952 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-01-30 14:15:49,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 123 transitions, 274 flow [2024-01-30 14:15:50,464 INFO L124 PetriNetUnfolderBase]: 2/119 cut-off events. [2024-01-30 14:15:50,476 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-30 14:15:50,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 119 events. 2/119 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 392 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 113. Up to 2 conditions per place. [2024-01-30 14:15:50,492 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 123 transitions, 274 flow [2024-01-30 14:15:50,498 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 117 transitions, 255 flow [2024-01-30 14:15:50,521 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-30 14:15:50,527 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;@1f72217, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-30 14:15:50,527 INFO L358 AbstractCegarLoop]: Starting to check reachability of 68 error locations. [2024-01-30 14:15:50,572 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-30 14:15:50,573 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-30 14:15:50,573 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-30 14:15:50,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:15:50,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-30 14:15:50,574 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [readerErr0ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr1ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-30 14:15:50,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:15:50,578 INFO L85 PathProgramCache]: Analyzing trace with hash 127174, now seen corresponding path program 1 times [2024-01-30 14:15:50,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:15:50,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075157130] [2024-01-30 14:15:50,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:15:50,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:15:52,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:15:53,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:15:53,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:15:53,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075157130] [2024-01-30 14:15:53,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075157130] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:15:53,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:15:53,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:15:53,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789365017] [2024-01-30 14:15:53,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:15:53,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:15:53,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:15:53,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:15:53,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:15:53,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 123 [2024-01-30 14:15:53,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 117 transitions, 255 flow. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 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) [2024-01-30 14:15:53,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:15:53,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 123 [2024-01-30 14:15:53,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:16:03,608 INFO L124 PetriNetUnfolderBase]: 59913/96597 cut-off events. [2024-01-30 14:16:03,608 INFO L125 PetriNetUnfolderBase]: For 3300/3300 co-relation queries the response was YES. [2024-01-30 14:16:03,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179629 conditions, 96597 events. 59913/96597 cut-off events. For 3300/3300 co-relation queries the response was YES. Maximal size of possible extension queue 3245. Compared 909554 event pairs, 59913 based on Foata normal form. 2247/78221 useless extension candidates. Maximal degree in co-relation 157068. Up to 80297 conditions per place. [2024-01-30 14:16:04,448 INFO L140 encePairwiseOnDemand]: 114/123 looper letters, 52 selfloop transitions, 2 changer transitions 0/110 dead transitions. [2024-01-30 14:16:04,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 110 transitions, 349 flow [2024-01-30 14:16:04,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:16:04,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:16:04,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 241 transitions. [2024-01-30 14:16:04,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6531165311653117 [2024-01-30 14:16:04,461 INFO L175 Difference]: Start difference. First operand has 128 places, 117 transitions, 255 flow. Second operand 3 states and 241 transitions. [2024-01-30 14:16:04,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 110 transitions, 349 flow [2024-01-30 14:16:04,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 110 transitions, 336 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-01-30 14:16:04,567 INFO L231 Difference]: Finished difference. Result has 118 places, 110 transitions, 232 flow [2024-01-30 14:16:04,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=118, PETRI_TRANSITIONS=110} [2024-01-30 14:16:04,571 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -10 predicate places. [2024-01-30 14:16:04,572 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 110 transitions, 232 flow [2024-01-30 14:16:04,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 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) [2024-01-30 14:16:04,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:16:04,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-30 14:16:04,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-30 14:16:04,573 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting writerErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [readerErr0ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr1ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-30 14:16:04,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:16:04,573 INFO L85 PathProgramCache]: Analyzing trace with hash -502250266, now seen corresponding path program 1 times [2024-01-30 14:16:04,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:16:04,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291189959] [2024-01-30 14:16:04,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:16:04,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:16:05,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:16:05,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:16:05,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:16:05,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291189959] [2024-01-30 14:16:05,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291189959] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:16:05,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:16:05,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:16:05,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978320834] [2024-01-30 14:16:05,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:16:05,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:16:05,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:16:05,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:16:05,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:16:05,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 123 [2024-01-30 14:16:05,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 110 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 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) [2024-01-30 14:16:05,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:16:05,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 123 [2024-01-30 14:16:05,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:16:13,519 INFO L124 PetriNetUnfolderBase]: 49427/86648 cut-off events. [2024-01-30 14:16:13,519 INFO L125 PetriNetUnfolderBase]: For 1121/1121 co-relation queries the response was YES. [2024-01-30 14:16:13,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154101 conditions, 86648 events. 49427/86648 cut-off events. For 1121/1121 co-relation queries the response was YES. Maximal size of possible extension queue 2777. Compared 869305 event pairs, 38606 based on Foata normal form. 2432/68217 useless extension candidates. Maximal degree in co-relation 154092. Up to 58853 conditions per place. [2024-01-30 14:16:14,166 INFO L140 encePairwiseOnDemand]: 119/123 looper letters, 90 selfloop transitions, 2 changer transitions 0/147 dead transitions. [2024-01-30 14:16:14,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 147 transitions, 494 flow [2024-01-30 14:16:14,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:16:14,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:16:14,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 334 transitions. [2024-01-30 14:16:14,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6788617886178862 [2024-01-30 14:16:14,172 INFO L175 Difference]: Start difference. First operand has 118 places, 110 transitions, 232 flow. Second operand 4 states and 334 transitions. [2024-01-30 14:16:14,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 147 transitions, 494 flow [2024-01-30 14:16:14,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 147 transitions, 490 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:16:14,178 INFO L231 Difference]: Finished difference. Result has 117 places, 108 transitions, 228 flow [2024-01-30 14:16:14,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=117, PETRI_TRANSITIONS=108} [2024-01-30 14:16:14,179 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -11 predicate places. [2024-01-30 14:16:14,179 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 108 transitions, 228 flow [2024-01-30 14:16:14,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 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) [2024-01-30 14:16:14,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:16:14,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:16:14,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-30 14:16:14,180 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [readerErr0ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr1ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-30 14:16:14,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:16:14,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1628544678, now seen corresponding path program 1 times [2024-01-30 14:16:14,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:16:14,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265433951] [2024-01-30 14:16:14,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:16:14,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:16:15,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:16:15,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:16:15,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:16:15,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265433951] [2024-01-30 14:16:15,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265433951] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:16:15,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:16:15,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:16:15,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299806190] [2024-01-30 14:16:15,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:16:15,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:16:15,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:16:15,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:16:15,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:16:15,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 123 [2024-01-30 14:16:15,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 108 transitions, 228 flow. Second operand has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 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) [2024-01-30 14:16:15,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:16:15,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 123 [2024-01-30 14:16:15,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:16:21,762 INFO L124 PetriNetUnfolderBase]: 41832/74756 cut-off events. [2024-01-30 14:16:21,762 INFO L125 PetriNetUnfolderBase]: For 1120/1120 co-relation queries the response was YES. [2024-01-30 14:16:21,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132016 conditions, 74756 events. 41832/74756 cut-off events. For 1120/1120 co-relation queries the response was YES. Maximal size of possible extension queue 2422. Compared 754169 event pairs, 1234 based on Foata normal form. 1920/59154 useless extension candidates. Maximal degree in co-relation 132003. Up to 53570 conditions per place. [2024-01-30 14:16:22,236 INFO L140 encePairwiseOnDemand]: 119/123 looper letters, 83 selfloop transitions, 2 changer transitions 0/139 dead transitions. [2024-01-30 14:16:22,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 139 transitions, 464 flow [2024-01-30 14:16:22,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:16:22,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:16:22,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 331 transitions. [2024-01-30 14:16:22,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6727642276422764 [2024-01-30 14:16:22,238 INFO L175 Difference]: Start difference. First operand has 117 places, 108 transitions, 228 flow. Second operand 4 states and 331 transitions. [2024-01-30 14:16:22,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 139 transitions, 464 flow [2024-01-30 14:16:22,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 139 transitions, 461 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:16:22,241 INFO L231 Difference]: Finished difference. Result has 116 places, 106 transitions, 225 flow [2024-01-30 14:16:22,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=225, PETRI_PLACES=116, PETRI_TRANSITIONS=106} [2024-01-30 14:16:22,242 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -12 predicate places. [2024-01-30 14:16:22,242 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 106 transitions, 225 flow [2024-01-30 14:16:22,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 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) [2024-01-30 14:16:22,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:16:22,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:16:22,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-30 14:16:22,243 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting writerErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [readerErr0ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr1ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-30 14:16:22,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:16:22,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1132438318, now seen corresponding path program 1 times [2024-01-30 14:16:22,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:16:22,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747123141] [2024-01-30 14:16:22,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:16:22,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:16:23,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:16:24,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:16:24,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:16:24,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747123141] [2024-01-30 14:16:24,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747123141] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:16:24,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:16:24,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:16:24,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683449740] [2024-01-30 14:16:24,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:16:24,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-30 14:16:24,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:16:24,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-30 14:16:24,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-01-30 14:16:24,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 123 [2024-01-30 14:16:24,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 106 transitions, 225 flow. Second operand has 5 states, 5 states have (on average 57.4) internal successors, (287), 5 states have internal predecessors, (287), 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) [2024-01-30 14:16:24,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:16:24,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 123 [2024-01-30 14:16:24,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand