./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 59af5db6 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-59af5db-m [2024-02-02 09:11:33,449 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-02 09:11:33,514 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-02 09:11:33,518 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-02 09:11:33,518 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-02 09:11:33,543 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-02 09:11:33,543 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-02 09:11:33,543 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-02 09:11:33,544 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-02 09:11:33,547 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-02 09:11:33,548 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-02 09:11:33,548 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-02 09:11:33,549 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-02 09:11:33,550 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-02 09:11:33,550 INFO L153 SettingsManager]: * Use SBE=true [2024-02-02 09:11:33,550 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-02 09:11:33,551 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-02 09:11:33,551 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-02 09:11:33,551 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-02 09:11:33,551 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-02 09:11:33,551 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-02 09:11:33,552 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-02 09:11:33,552 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-02 09:11:33,552 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-02 09:11:33,552 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-02 09:11:33,553 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-02 09:11:33,553 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-02 09:11:33,553 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-02 09:11:33,554 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-02 09:11:33,554 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-02 09:11:33,555 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-02 09:11:33,555 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-02 09:11:33,555 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:11:33,555 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-02 09:11:33,555 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-02 09:11:33,555 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-02 09:11:33,556 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-02 09:11:33,556 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-02 09:11:33,556 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-02 09:11:33,556 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-02 09:11:33,556 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-02 09:11:33,557 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-02 09:11:33,557 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-02 09:11:33,557 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-02 09:11:33,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-02 09:11:33,857 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-02 09:11:33,860 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-02 09:11:33,861 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-02 09:11:33,861 INFO L274 PluginConnector]: CDTParser initialized [2024-02-02 09:11:33,862 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1-pthread.i [2024-02-02 09:11:35,040 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-02 09:11:35,297 INFO L384 CDTParser]: Found 1 translation units. [2024-02-02 09:11:35,298 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1-pthread.i [2024-02-02 09:11:35,309 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba00a05db/b987a74ca6eb4f71940803403e6015bb/FLAG562864d76 [2024-02-02 09:11:35,319 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba00a05db/b987a74ca6eb4f71940803403e6015bb [2024-02-02 09:11:35,320 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-02 09:11:35,321 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-02 09:11:35,322 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/read_write_lock-1-pthread.yml/witness.yml [2024-02-02 09:11:35,475 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-02 09:11:35,476 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-02 09:11:35,477 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-02 09:11:35,477 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-02 09:11:35,481 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-02 09:11:35,482 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:11:35" (1/2) ... [2024-02-02 09:11:35,489 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@201e66df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:35, skipping insertion in model container [2024-02-02 09:11:35,489 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:11:35" (1/2) ... [2024-02-02 09:11:35,491 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@d0fbc94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:35, skipping insertion in model container [2024-02-02 09:11:35,491 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:11:35" (2/2) ... [2024-02-02 09:11:35,492 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@201e66df and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:11:35, skipping insertion in model container [2024-02-02 09:11:35,492 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:11:35" (2/2) ... [2024-02-02 09:11:35,492 INFO L86 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-02 09:11:35,612 INFO L99 nessWitnessExtractor]: Found the following entries in the witness: [2024-02-02 09:11:35,614 INFO L101 nessWitnessExtractor]: Location invariant before [L698-L698] (unsigned long )arg == 0UL [2024-02-02 09:11:35,614 INFO L101 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) [2024-02-02 09:11:35,614 INFO L101 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-02-02 09:11:35,614 INFO L101 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) [2024-02-02 09:11:35,614 INFO L101 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) [2024-02-02 09:11:35,615 INFO L101 nessWitnessExtractor]: Location invariant before [L699-L699] (((((0 <= y) && (y <= 3)) && (y <= 127)) && (y % 3 == 0)) && ((unsigned long )arg == 0UL)) && (y == 0 || y == 3) [2024-02-02 09:11:35,615 INFO L101 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) [2024-02-02 09:11:35,615 INFO L101 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) [2024-02-02 09:11:35,615 INFO L101 nessWitnessExtractor]: Location invariant before [L704-L704] (((((0 <= l) && (l <= 3)) && (l <= 127)) && (l % 3 == 0)) && ((unsigned long )arg == 0UL)) && (l == 0 || l == 3) [2024-02-02 09:11:35,616 INFO L101 nessWitnessExtractor]: Location invariant before [L697-L697] (unsigned long )arg == 0UL [2024-02-02 09:11:35,616 INFO L101 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) [2024-02-02 09:11:35,616 INFO L101 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) [2024-02-02 09:11:35,616 INFO L101 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) [2024-02-02 09:11:35,616 INFO L101 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) [2024-02-02 09:11:35,616 INFO L101 nessWitnessExtractor]: Location invariant before [L701-L701] (((((0 <= l) && (l <= 3)) && (l <= 127)) && (l % 3 == 0)) && ((unsigned long )arg == 0UL)) && (l == 0 || l == 3) [2024-02-02 09:11:35,616 INFO L101 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) [2024-02-02 09:11:35,616 INFO L101 nessWitnessExtractor]: Location invariant before [L690-L690] (unsigned long )arg == 0UL [2024-02-02 09:11:35,617 INFO L101 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) [2024-02-02 09:11:35,617 INFO L101 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) [2024-02-02 09:11:35,617 INFO L101 nessWitnessExtractor]: Location invariant before [L691-L691] (((((0 <= x) && (x <= 3)) && (x <= 127)) && (x % 3 == 0)) && ((unsigned long )arg == 0UL)) && (x == 0 || x == 3) [2024-02-02 09:11:35,617 INFO L101 nessWitnessExtractor]: Location invariant before [L692-L692] (x == 3) && ((unsigned long )arg == 0UL) [2024-02-02 09:11:35,655 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-02 09:11:35,916 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] [2024-02-02 09:11:35,931 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:11:35,946 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 [2024-02-02 09:11:36,033 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 [2024-02-02 09:11:36,100 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:11:36,142 INFO L206 MainTranslator]: Completed translation [2024-02-02 09:11:36,143 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:11:36 WrapperNode [2024-02-02 09:11:36,143 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-02 09:11:36,144 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-02 09:11:36,144 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-02 09:11:36,144 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-02 09:11:36,149 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 02.02 09:11:36" (1/1) ... [2024-02-02 09:11:36,200 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 02.02 09:11:36" (1/1) ... [2024-02-02 09:11:36,319 INFO L138 Inliner]: procedures = 166, calls = 538, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1908 [2024-02-02 09:11:36,319 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-02 09:11:36,320 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-02 09:11:36,320 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-02 09:11:36,320 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-02 09:11:36,328 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:11:36" (1/1) ... [2024-02-02 09:11:36,329 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:11:36" (1/1) ... [2024-02-02 09:11:36,337 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:11:36" (1/1) ... [2024-02-02 09:11:36,381 INFO L175 MemorySlicer]: Split 505 memory accesses to 6 slices as follows [2, 495, 2, 2, 2, 2]. 98 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 11, 0, 0, 0, 0]. The 4 writes are split as follows [0, 0, 1, 1, 1, 1]. [2024-02-02 09:11:36,383 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:11:36" (1/1) ... [2024-02-02 09:11:36,383 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:11:36" (1/1) ... [2024-02-02 09:11:36,417 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:11:36" (1/1) ... [2024-02-02 09:11:36,432 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:11:36" (1/1) ... [2024-02-02 09:11:36,437 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:11:36" (1/1) ... [2024-02-02 09:11:36,445 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:11:36" (1/1) ... [2024-02-02 09:11:36,455 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-02 09:11:36,459 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-02 09:11:36,459 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-02 09:11:36,459 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-02 09:11:36,460 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:11:36" (1/1) ... [2024-02-02 09:11:36,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:11:36,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:11:36,586 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) [2024-02-02 09:11:36,649 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 [2024-02-02 09:11:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockUnlock [2024-02-02 09:11:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-02 09:11:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-02 09:11:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-02 09:11:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-02 09:11:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-02 09:11:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-02-02 09:11:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-02 09:11:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-02 09:11:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-02 09:11:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-02 09:11:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-02 09:11:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-02 09:11:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockReadLock [2024-02-02 09:11:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-02 09:11:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-02 09:11:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2024-02-02 09:11:36,682 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2024-02-02 09:11:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-02 09:11:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockWriteLock [2024-02-02 09:11:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-02 09:11:36,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-02 09:11:36,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-02 09:11:36,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-02 09:11:36,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-02 09:11:36,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-02 09:11:36,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-02 09:11:36,683 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-02 09:11:36,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-02 09:11:36,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-02 09:11:36,684 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2024-02-02 09:11:36,684 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2024-02-02 09:11:36,686 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-02 09:11:36,918 INFO L244 CfgBuilder]: Building ICFG [2024-02-02 09:11:36,921 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-02 09:11:38,070 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-02 09:11:38,071 INFO L293 CfgBuilder]: Performing block encoding [2024-02-02 09:11:54,536 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-02 09:11:54,537 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-02 09:11:54,537 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:11:54 BoogieIcfgContainer [2024-02-02 09:11:54,537 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-02 09:11:54,539 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-02 09:11:54,539 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-02 09:11:54,542 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-02 09:11:54,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 09:11:35" (1/4) ... [2024-02-02 09:11:54,542 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5097b22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:11:54, skipping insertion in model container [2024-02-02 09:11:54,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:11:35" (2/4) ... [2024-02-02 09:11:54,543 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5097b22 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 02.02 09:11:54, skipping insertion in model container [2024-02-02 09:11:54,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:11:36" (3/4) ... [2024-02-02 09:11:54,543 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5097b22 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 02.02 09:11:54, skipping insertion in model container [2024-02-02 09:11:54,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:11:54" (4/4) ... [2024-02-02 09:11:54,544 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-1-pthread.i [2024-02-02 09:11:54,562 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-02 09:11:54,562 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2024-02-02 09:11:54,563 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-02 09:11:54,648 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-02-02 09:11:54,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 123 transitions, 274 flow [2024-02-02 09:11:54,802 INFO L124 PetriNetUnfolderBase]: 2/119 cut-off events. [2024-02-02 09:11:54,803 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-02 09:11:54,808 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. [2024-02-02 09:11:54,808 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 123 transitions, 274 flow [2024-02-02 09:11:54,814 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 117 transitions, 255 flow [2024-02-02 09:11:54,823 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-02 09:11:54,829 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;@46cb70d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-02 09:11:54,829 INFO L358 AbstractCegarLoop]: Starting to check reachability of 68 error locations. [2024-02-02 09:11:55,329 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-02 09:11:55,329 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-02 09:11:55,330 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:11:55,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:11:55,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-02 09:11:55,331 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [readerErr0ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr1ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-02-02 09:11:55,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:11:55,344 INFO L85 PathProgramCache]: Analyzing trace with hash 127174, now seen corresponding path program 1 times [2024-02-02 09:11:55,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:11:55,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542795041] [2024-02-02 09:11:55,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:11:55,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:11:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:11:58,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:11:58,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:11:58,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542795041] [2024-02-02 09:11:58,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542795041] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:11:58,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:11:58,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-02 09:11:58,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251733538] [2024-02-02 09:11:58,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:11:58,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:11:58,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:11:58,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:11:58,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:11:58,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 123 [2024-02-02 09:11:58,823 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) [2024-02-02 09:11:58,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:11:58,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 123 [2024-02-02 09:11:58,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:12:07,936 INFO L124 PetriNetUnfolderBase]: 59913/96597 cut-off events. [2024-02-02 09:12:07,936 INFO L125 PetriNetUnfolderBase]: For 3300/3300 co-relation queries the response was YES. [2024-02-02 09:12:08,273 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. [2024-02-02 09:12:08,814 INFO L140 encePairwiseOnDemand]: 114/123 looper letters, 52 selfloop transitions, 2 changer transitions 0/110 dead transitions. [2024-02-02 09:12:08,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 110 transitions, 349 flow [2024-02-02 09:12:08,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:12:08,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:12:08,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 241 transitions. [2024-02-02 09:12:08,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6531165311653117 [2024-02-02 09:12:08,826 INFO L175 Difference]: Start difference. First operand has 128 places, 117 transitions, 255 flow. Second operand 3 states and 241 transitions. [2024-02-02 09:12:08,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 110 transitions, 349 flow [2024-02-02 09:12:08,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 110 transitions, 336 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-02-02 09:12:08,909 INFO L231 Difference]: Finished difference. Result has 118 places, 110 transitions, 232 flow [2024-02-02 09:12:08,911 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} [2024-02-02 09:12:08,914 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -10 predicate places. [2024-02-02 09:12:08,914 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 110 transitions, 232 flow [2024-02-02 09:12:08,915 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) [2024-02-02 09:12:08,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:12:08,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-02 09:12:08,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-02 09:12:08,915 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting writerErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [readerErr0ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr1ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-02-02 09:12:08,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:12:08,916 INFO L85 PathProgramCache]: Analyzing trace with hash -502250266, now seen corresponding path program 1 times [2024-02-02 09:12:08,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:12:08,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082847238] [2024-02-02 09:12:08,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:08,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:12:09,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:12:10,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:12:10,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:12:10,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082847238] [2024-02-02 09:12:10,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082847238] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:12:10,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:12:10,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:12:10,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43554589] [2024-02-02 09:12:10,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:12:10,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:12:10,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:12:10,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:12:10,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:12:10,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 123 [2024-02-02 09:12:10,183 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) [2024-02-02 09:12:10,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:12:10,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 123 [2024-02-02 09:12:10,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:12:17,319 INFO L124 PetriNetUnfolderBase]: 49427/86648 cut-off events. [2024-02-02 09:12:17,320 INFO L125 PetriNetUnfolderBase]: For 1121/1121 co-relation queries the response was YES. [2024-02-02 09:12:17,480 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. [2024-02-02 09:12:17,834 INFO L140 encePairwiseOnDemand]: 119/123 looper letters, 90 selfloop transitions, 2 changer transitions 0/147 dead transitions. [2024-02-02 09:12:17,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 147 transitions, 494 flow [2024-02-02 09:12:17,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:12:17,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:12:17,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 334 transitions. [2024-02-02 09:12:17,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6788617886178862 [2024-02-02 09:12:17,837 INFO L175 Difference]: Start difference. First operand has 118 places, 110 transitions, 232 flow. Second operand 4 states and 334 transitions. [2024-02-02 09:12:17,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 147 transitions, 494 flow [2024-02-02 09:12:17,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 147 transitions, 490 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:12:17,840 INFO L231 Difference]: Finished difference. Result has 117 places, 108 transitions, 228 flow [2024-02-02 09:12:17,840 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} [2024-02-02 09:12:17,841 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -11 predicate places. [2024-02-02 09:12:17,841 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 108 transitions, 228 flow [2024-02-02 09:12:17,841 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) [2024-02-02 09:12:17,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:12:17,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:12:17,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-02 09:12:17,842 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [readerErr0ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr1ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-02-02 09:12:17,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:12:17,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1628544678, now seen corresponding path program 1 times [2024-02-02 09:12:17,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:12:17,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238549426] [2024-02-02 09:12:17,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:17,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:12:18,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:12:18,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:12:18,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:12:18,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238549426] [2024-02-02 09:12:18,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238549426] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:12:18,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:12:18,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:12:18,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694543989] [2024-02-02 09:12:18,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:12:18,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:12:18,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:12:18,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:12:18,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:12:18,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 123 [2024-02-02 09:12:18,928 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) [2024-02-02 09:12:18,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:12:18,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 123 [2024-02-02 09:12:18,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:12:25,029 INFO L124 PetriNetUnfolderBase]: 41832/74756 cut-off events. [2024-02-02 09:12:25,029 INFO L125 PetriNetUnfolderBase]: For 1120/1120 co-relation queries the response was YES. [2024-02-02 09:12:25,166 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. [2024-02-02 09:12:25,447 INFO L140 encePairwiseOnDemand]: 119/123 looper letters, 83 selfloop transitions, 2 changer transitions 0/139 dead transitions. [2024-02-02 09:12:25,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 139 transitions, 464 flow [2024-02-02 09:12:25,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:12:25,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:12:25,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 331 transitions. [2024-02-02 09:12:25,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6727642276422764 [2024-02-02 09:12:25,449 INFO L175 Difference]: Start difference. First operand has 117 places, 108 transitions, 228 flow. Second operand 4 states and 331 transitions. [2024-02-02 09:12:25,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 139 transitions, 464 flow [2024-02-02 09:12:25,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 139 transitions, 461 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:12:25,457 INFO L231 Difference]: Finished difference. Result has 116 places, 106 transitions, 225 flow [2024-02-02 09:12:25,457 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} [2024-02-02 09:12:25,458 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -12 predicate places. [2024-02-02 09:12:25,458 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 106 transitions, 225 flow [2024-02-02 09:12:25,458 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) [2024-02-02 09:12:25,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:12:25,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:12:25,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-02 09:12:25,462 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting writerErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [readerErr0ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr1ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-02-02 09:12:25,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:12:25,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1132438318, now seen corresponding path program 1 times [2024-02-02 09:12:25,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:12:25,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175725407] [2024-02-02 09:12:25,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:25,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:12:26,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:12:26,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:12:26,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:12:26,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175725407] [2024-02-02 09:12:26,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175725407] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:12:26,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:12:26,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:12:26,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920743342] [2024-02-02 09:12:26,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:12:26,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-02 09:12:26,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:12:26,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-02 09:12:26,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-02-02 09:12:26,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 123 [2024-02-02 09:12:26,847 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) [2024-02-02 09:12:26,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:12:26,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 123 [2024-02-02 09:12:26,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand