./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 fced0e87 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-wip.fs.extract-columns-fced0e8-m [2024-01-31 16:01:05,214 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:01:05,289 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:01:05,295 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:01:05,296 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:01:05,361 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:01:05,362 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:01:05,362 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:01:05,363 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:01:05,363 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:01:05,363 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:01:05,364 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:01:05,364 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:01:05,364 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:01:05,365 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:01:05,365 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:01:05,365 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:01:05,366 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:01:05,366 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:01:05,366 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:01:05,366 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:01:05,370 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:01:05,370 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:01:05,370 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:01:05,370 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:01:05,370 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:01:05,371 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:01:05,371 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:01:05,371 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:01:05,371 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:01:05,371 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:01:05,372 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:01:05,372 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:01:05,372 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:01:05,372 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:01:05,372 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:01:05,373 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:01:05,373 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:01:05,373 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:01:05,373 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:01:05,373 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:01:05,374 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:01:05,374 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:01:05,374 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:01:05,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:01:05,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:01:05,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:01:05,708 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:01:05,709 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:01:05,710 INFO L431 ainManager$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 [2024-01-31 16:01:05,907 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:01:05,907 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:01:05,909 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1-pthread.i [2024-01-31 16:01:07,191 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:01:07,459 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:01:07,459 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1-pthread.i [2024-01-31 16:01:07,472 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/279758e1d/4e224f58c5184f61a742d0ca00353f61/FLAGbf31c4e4a [2024-01-31 16:01:07,487 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/279758e1d/4e224f58c5184f61a742d0ca00353f61 [2024-01-31 16:01:07,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:01:07,489 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:01:07,490 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:01:07,490 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:01:07,495 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:01:07,496 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:01:05" (1/2) ... [2024-01-31 16:01:07,497 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fb2d573 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:01:07, skipping insertion in model container [2024-01-31 16:01:07,497 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:01:05" (1/2) ... [2024-01-31 16:01:07,499 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6d1e714a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:01:07, skipping insertion in model container [2024-01-31 16:01:07,499 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:01:07" (2/2) ... [2024-01-31 16:01:07,499 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fb2d573 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:07, skipping insertion in model container [2024-01-31 16:01:07,500 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:01:07" (2/2) ... [2024-01-31 16:01:07,501 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:01:07,732 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 16:01:07,733 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) [2024-01-31 16:01:07,733 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) [2024-01-31 16:01:07,734 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) [2024-01-31 16:01:07,734 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) [2024-01-31 16:01:07,734 INFO L98 nessWitnessExtractor]: Location invariant after [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) [2024-01-31 16:01:07,734 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) [2024-01-31 16:01:07,734 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) [2024-01-31 16:01:07,734 INFO L98 nessWitnessExtractor]: Location invariant before [L692-L692] (x == 3) && ((unsigned long )arg == 0UL) [2024-01-31 16:01:07,735 INFO L98 nessWitnessExtractor]: Location invariant before [L697-L697] (unsigned long )arg == 0UL [2024-01-31 16:01:07,735 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) [2024-01-31 16:01:07,735 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) [2024-01-31 16:01:07,735 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) [2024-01-31 16:01:07,735 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-01-31 16:01:07,735 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) [2024-01-31 16:01:07,736 INFO L98 nessWitnessExtractor]: Location invariant after [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) [2024-01-31 16:01:07,736 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) [2024-01-31 16:01:07,736 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) [2024-01-31 16:01:07,736 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) [2024-01-31 16:01:07,736 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) [2024-01-31 16:01:07,736 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) [2024-01-31 16:01:07,737 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) [2024-01-31 16:01:07,737 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) [2024-01-31 16:01:07,737 INFO L98 nessWitnessExtractor]: Location invariant before [L698-L698] (unsigned long )arg == 0UL [2024-01-31 16:01:07,737 INFO L98 nessWitnessExtractor]: Location invariant after [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) [2024-01-31 16:01:07,737 INFO L98 nessWitnessExtractor]: Location invariant before [L690-L690] (unsigned long )arg == 0UL [2024-01-31 16:01:07,792 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:01:08,205 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] [2024-01-31 16:01:08,222 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:01:08,239 INFO L204 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 [2024-01-31 16:01:08,353 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 16:01:08,354 WARN L424 MainDispatcher]: Unable to annotate ly = y with a witness entry Start Parsing Local Start Parsing Local [2024-01-31 16:01:08,363 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 16:01:08,368 WARN L424 MainDispatcher]: Unable to annotate lx = x with a witness entry Start Parsing Local Start Parsing Local [2024-01-31 16:01:08,374 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 [2024-01-31 16:01:08,445 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:01:08,475 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:01:08,475 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:08 WrapperNode [2024-01-31 16:01:08,475 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:01:08,476 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:01:08,476 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:01:08,477 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:01:08,483 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:08" (1/1) ... [2024-01-31 16:01:08,540 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:08" (1/1) ... [2024-01-31 16:01:08,598 INFO L138 Inliner]: procedures = 166, calls = 538, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1908 [2024-01-31 16:01:08,599 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:01:08,599 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:01:08,599 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:01:08,600 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:01:08,616 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:08" (1/1) ... [2024-01-31 16:01:08,616 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:08" (1/1) ... [2024-01-31 16:01:08,631 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:08" (1/1) ... [2024-01-31 16:01:08,671 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]. [2024-01-31 16:01:08,671 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:08" (1/1) ... [2024-01-31 16:01:08,671 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:08" (1/1) ... [2024-01-31 16:01:08,708 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:08" (1/1) ... [2024-01-31 16:01:08,725 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:08" (1/1) ... [2024-01-31 16:01:08,730 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:08" (1/1) ... [2024-01-31 16:01:08,737 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:08" (1/1) ... [2024-01-31 16:01:08,754 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:01:08,755 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:01:08,755 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:01:08,755 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:01:08,756 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:08" (1/1) ... [2024-01-31 16:01:08,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:01:08,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:01:08,796 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) [2024-01-31 16:01:08,816 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 [2024-01-31 16:01:08,832 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockUnlock [2024-01-31 16:01:08,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 16:01:08,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 16:01:08,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 16:01:08,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 16:01:08,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-31 16:01:08,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-01-31 16:01:08,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:01:08,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:01:08,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:01:08,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 16:01:08,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 16:01:08,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-01-31 16:01:08,835 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockReadLock [2024-01-31 16:01:08,836 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 16:01:08,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:01:08,836 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2024-01-31 16:01:08,836 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2024-01-31 16:01:08,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:01:08,836 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockWriteLock [2024-01-31 16:01:08,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:01:08,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:01:08,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:01:08,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:01:08,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 16:01:08,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 16:01:08,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-01-31 16:01:08,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 16:01:08,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:01:08,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:01:08,838 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2024-01-31 16:01:08,838 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2024-01-31 16:01:08,840 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:01:09,099 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:01:09,101 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:01:10,574 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:01:10,576 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:01:30,992 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:01:30,993 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 16:01:30,993 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:01:30 BoogieIcfgContainer [2024-01-31 16:01:30,993 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:01:30,996 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:01:30,996 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:01:30,999 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:01:30,999 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:01:05" (1/4) ... [2024-01-31 16:01:31,000 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3105705d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:01:31, skipping insertion in model container [2024-01-31 16:01:31,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:01:07" (2/4) ... [2024-01-31 16:01:31,000 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3105705d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:01:31, skipping insertion in model container [2024-01-31 16:01:31,001 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:08" (3/4) ... [2024-01-31 16:01:31,001 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3105705d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:01:31, skipping insertion in model container [2024-01-31 16:01:31,001 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:01:30" (4/4) ... [2024-01-31 16:01:31,002 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-1-pthread.i [2024-01-31 16:01:31,022 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:01:31,022 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2024-01-31 16:01:31,023 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:01:31,127 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-01-31 16:01:31,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 123 transitions, 274 flow [2024-01-31 16:01:31,311 INFO L124 PetriNetUnfolderBase]: 2/119 cut-off events. [2024-01-31 16:01:31,311 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-31 16:01:31,317 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 8. Compared 410 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 113. Up to 2 conditions per place. [2024-01-31 16:01:31,318 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 123 transitions, 274 flow [2024-01-31 16:01:31,325 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 117 transitions, 255 flow [2024-01-31 16:01:31,339 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:01:31,347 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;@34516b41, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:01:31,347 INFO L358 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2024-01-31 16:01:31,426 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:01:31,426 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-31 16:01:31,426 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:01:31,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:31,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-31 16:01:31,428 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [readerErr0ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr1ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 62 more)] === [2024-01-31 16:01:31,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:31,434 INFO L85 PathProgramCache]: Analyzing trace with hash 126791, now seen corresponding path program 1 times [2024-01-31 16:01:31,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:31,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422255948] [2024-01-31 16:01:31,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:31,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:33,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:01:36,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:01:36,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:01:36,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422255948] [2024-01-31 16:01:36,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422255948] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:01:36,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:01:36,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:01:36,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282549937] [2024-01-31 16:01:36,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:01:36,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:01:36,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:01:36,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:01:36,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:01:36,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 123 [2024-01-31 16:01:36,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 117 transitions, 255 flow. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 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) [2024-01-31 16:01:36,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:01:36,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 123 [2024-01-31 16:01:36,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:01:46,068 INFO L124 PetriNetUnfolderBase]: 52245/81801 cut-off events. [2024-01-31 16:01:46,069 INFO L125 PetriNetUnfolderBase]: For 2912/2912 co-relation queries the response was YES. [2024-01-31 16:01:46,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154366 conditions, 81801 events. 52245/81801 cut-off events. For 2912/2912 co-relation queries the response was YES. Maximal size of possible extension queue 2723. Compared 731587 event pairs, 52245 based on Foata normal form. 1874/67385 useless extension candidates. Maximal degree in co-relation 134682. Up to 70095 conditions per place. [2024-01-31 16:01:46,938 INFO L140 encePairwiseOnDemand]: 116/123 looper letters, 50 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2024-01-31 16:01:46,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 112 transitions, 349 flow [2024-01-31 16:01:46,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:01:46,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:01:46,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 249 transitions. [2024-01-31 16:01:46,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6747967479674797 [2024-01-31 16:01:46,957 INFO L175 Difference]: Start difference. First operand has 128 places, 117 transitions, 255 flow. Second operand 3 states and 249 transitions. [2024-01-31 16:01:46,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 112 transitions, 349 flow [2024-01-31 16:01:47,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 112 transitions, 336 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-01-31 16:01:47,702 INFO L231 Difference]: Finished difference. Result has 120 places, 112 transitions, 236 flow [2024-01-31 16:01:47,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=236, PETRI_PLACES=120, PETRI_TRANSITIONS=112} [2024-01-31 16:01:47,708 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -8 predicate places. [2024-01-31 16:01:47,708 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 112 transitions, 236 flow [2024-01-31 16:01:47,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 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) [2024-01-31 16:01:47,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:47,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-31 16:01:47,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:01:47,709 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting writerErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [readerErr0ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr1ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 62 more)] === [2024-01-31 16:01:47,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:47,710 INFO L85 PathProgramCache]: Analyzing trace with hash -513667298, now seen corresponding path program 1 times [2024-01-31 16:01:47,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:47,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427329800] [2024-01-31 16:01:47,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:47,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:01:49,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:01:49,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:01:49,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427329800] [2024-01-31 16:01:49,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427329800] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:01:49,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:01:49,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:01:49,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531518794] [2024-01-31 16:01:49,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:01:49,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:01:49,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:01:49,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:01:49,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:01:49,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 123 [2024-01-31 16:01:49,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 112 transitions, 236 flow. Second operand has 4 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 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) [2024-01-31 16:01:49,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:01:49,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 123 [2024-01-31 16:01:49,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand